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searching for Vacuum 362 found (17224 total)

alternate case: vacuum

Vacuum cleaner (4,928 words) [view diff] exact match in snippet view article find links to article

A vacuum cleaner, also known simply as a vacuum or a hoover, is a device that causes suction in order to remove debris from floors, upholstery, draperies
Composite material (10,194 words) [view diff] exact match in snippet view article find links to article
acting upon the vacuum bag. A vacuum pump is typically used to draw a vacuum. An economical method of drawing a vacuum is with a venturi vacuum and air compressor
Mobil (3,739 words) [view diff] exact match in snippet view article find links to article
Mobil, previously known as the Socony-Vacuum Oil Company, is a major American oil company that merged with Exxon in 1999 to form a parent company called
Penis enlargement (1,749 words) [view diff] exact match in snippet view article find links to article
ineffective. Physical techniques involve extension devices, hanging weights, and vacuum pressure. There is also significant overlap between techniques intended
Inch of mercury (548 words) [view diff] exact match in snippet view article find links to article
in "inches of mercury vacuum" (inHg), down to a 30 inHg vacuum. Inches of mercury is also used in automotive cooling system vacuum test and fill tools.
False vacuum (4,012 words) [view diff] exact match in snippet view article find links to article
In quantum field theory, a false vacuum is a hypothetical vacuum that is not actively decaying, but somewhat yet not entirely stable ("metastable"). It
Ultraviolet (11,234 words) [view diff] exact match in snippet view article find links to article
discovery of the ultraviolet radiation with wavelengths below 200 nm, named "vacuum ultraviolet" because it is strongly absorbed by the oxygen in air, was made
Quantum fluctuation (1,407 words) [view diff] exact match in snippet view article find links to article
In quantum physics, a quantum fluctuation (or vacuum state fluctuation or vacuum fluctuation) is the temporary random change in the amount of energy in
Filtration (1,859 words) [view diff] exact match in snippet view article find links to article
filtration techniques depending on the desired outcome namely, hot, cold and vacuum filtration. Some of the major purposes of getting the desired outcome are
Diode (7,661 words) [view diff] exact match in snippet view article find links to article
(ideally infinite) resistance in the other. A diode vacuum tube or thermionic diode is a vacuum tube with two electrodes, a heated cathode and a plate
Railway brake (3,977 words) [view diff] exact match in snippet view article find links to article
automatic vacuum brake. This system was similar to the simple vacuum system, except that the creation of vacuum in the train pipe exhausted vacuum reservoirs
Thermobaric weapon (3,967 words) [view diff] exact match in snippet view article find links to article
A thermobaric weapon, aerosol bomb, or vacuum bomb is a type of explosive that uses oxygen from the surrounding air to generate a high-temperature explosion
Vacuum brake (4,363 words) [view diff] exact match in snippet view article find links to article
The vacuum brake is a braking system employed on trains and introduced in the mid-1860s. A variant, the automatic vacuum brake system, became almost universal
Thrust (1,531 words) [view diff] no match in snippet view article find links to article
Thrust is a reaction force described quantitatively by Newton's third law. When a system expels or accelerates mass in one direction, the accelerated mass
Einstein field equations (3,660 words) [view diff] exact match in snippet view article find links to article
The solutions to the vacuum field equations are called vacuum solutions. Flat Minkowski space is the simplest example of a vacuum solution. Nontrivial
HEPA (2,511 words) [view diff] exact match in snippet view article find links to article
trigger allergy and asthma symptoms. For a HEPA filter in a vacuum cleaner to be effective, the vacuum cleaner must be designed so that all the air drawn into
Cathode (2,904 words) [view diff] exact match in snippet view article find links to article
or solar cells where the current of interest is the reverse current. In vacuum tubes (including cathode ray tubes) it is the negative terminal where electrons
Barometer (4,822 words) [view diff] exact match in snippet view article find links to article
the vacuum, held the water in the tube. In a letter to Michelangelo Ricci in 1644 concerning the experiments, he wrote: Many have said that a vacuum does
AM broadcasting (6,920 words) [view diff] exact match in snippet view article find links to article
broadcasting was not established until the 1920s, following the development of vacuum tube receivers and transmitters. AM radio remained the dominant method of
Transistor (9,542 words) [view diff] exact match in snippet view article find links to article
devices. Compared with the vacuum tube, transistors are generally smaller and require less power to operate. Certain vacuum tubes have advantages over
Electrolux (2,099 words) [view diff] exact match in snippet view article find links to article
founded by a former vacuum salesman who had also been an employee of the former firm. The origins of Electrolux are closely tied to the vacuum, but today it
Toilet (6,503 words) [view diff] exact match in snippet view article find links to article
ships are typically flushed with seawater. A vacuum toilet is a flush toilet that is connected to a vacuum sewer system, and removes waste by suction.
Solid-state electronics (872 words) [view diff] exact match in snippet view article find links to article
thermionic vacuum tubes it replaced worked by controlling current conducted by a gas of particles, electrons or ions, moving in a vacuum within a sealed
Dyson (company) (4,627 words) [view diff] exact match in snippet view article
Dyson in 1991. It designs and manufactures household appliances such as vacuum cleaners, air purifiers, hand dryers, bladeless fans, heaters, hair dryers
Triode (3,301 words) [view diff] exact match in snippet view article find links to article
A triode is an electronic amplifying vacuum tube (or valve in British English) consisting of three electrodes inside an evacuated glass envelope: a heated
Amplifier (6,788 words) [view diff] exact match in snippet view article find links to article
amplify was the triode vacuum tube, invented in 1906 by Lee De Forest, which led to the first amplifiers around 1912. Vacuum tubes were used in almost
Electronic oscillator (3,213 words) [view diff] exact match in snippet view article find links to article
of other vacuum-tube oscillators. Vacuum-tube feedback oscillators became the basis of radio transmission by 1920. However, the triode vacuum tube oscillator
Safety valve (3,602 words) [view diff] exact match in snippet view article find links to article
were prone to explosion unless carefully operated. Vacuum safety valves (or combined pressure/vacuum safety valves) are used to prevent a tank from collapsing
Gravity (5,665 words) [view diff] exact match in snippet view article find links to article
the Universe), possibly from a primeval state, such as a false vacuum, quantum vacuum or virtual particle, in a currently unknown manner. Attempts to
Electronic component (2,462 words) [view diff] exact match in snippet view article find links to article
Penetron (a 2 colour see-through CRT) A vacuum tube is based on current conduction through a vacuum (see Vacuum tube). Diode or rectifier tube Amplification
Pressure swing adsorption (1,597 words) [view diff] exact match in snippet view article find links to article
separation process with a vacuum. For oxygen and nitrogen VSA systems, the vacuum is typically generated by a blower. Hybrid Vacuum Pressure swing adsorption
The Hoover Company (4,779 words) [view diff] exact match in snippet view article find links to article
dominated the electric vacuum cleaner industry, to the point where the Hoover brand name became synonymous with vacuum cleaners and vacuuming in the United Kingdom
History of radio (9,937 words) [view diff] exact match in snippet view article find links to article
the first vacuum tubes. These help to transmit the radio waves for long distance broadcasting. The most common type of receiver before vacuum tubes was
Phototube (324 words) [view diff] exact match in snippet view article find links to article
A phototube or photoelectric cell is a type of gas-filled or vacuum tube that is sensitive to light. Such a tube is more correctly called a 'photoemissive
Injector (2,483 words) [view diff] exact match in snippet view article find links to article
or an aspirator. An ejector operates on similar principles to create a vacuum feed connection for braking systems etc. The injector was invented by Henri
Nixie tube (2,421 words) [view diff] exact match in snippet view article find links to article
little mercury or argon, in a Penning mixture. Although it resembles a vacuum tube in appearance, its operation does not depend on thermionic emission
Inflaton (913 words) [view diff] exact match in snippet view article find links to article
Expanding vacuum state with high potential energy Phase transition to true vacuum Slow roll and reheating In quantum field theory, a vacuum state or vacuum is
James Dyson (4,404 words) [view diff] exact match in snippet view article find links to article
Traditionally, he is best known as the inventor of the Dual Cyclone bagless vacuum cleaner, which works on the principle of cyclonic separation. According
Cathode ray (2,525 words) [view diff] exact match in snippet view article find links to article
in a vacuum tube. To release electrons into the tube, they first must be detached from the atoms of the cathode. In the early cold cathode vacuum tubes
Robotic vacuum cleaner (1,072 words) [view diff] exact match in snippet view article find links to article
robotic vacuum cleaner, often called a roomba, is an autonomous robotic vacuum cleaner which has intelligent programming and a limited vacuum floor cleaning
Luigi's Mansion (4,274 words) [view diff] exact match in snippet view article find links to article
dealing with ghosts that lie within its rooms by capturing them through a vacuum cleaner supplied by Professor E. Gadd. Luigi's Mansion was well-received
Carburetor (6,542 words) [view diff] exact match in snippet view article find links to article
"power valve", which is held shut by engine vacuum. As the throttle valve opens up, the manifold vacuum decreases and the spring opens the valve to let
Desiccator (386 words) [view diff] exact match in snippet view article find links to article
ground-glass rim of the desiccator lid must be greased with a thin layer of vacuum grease, petroleum jelly or other lubricant to ensure an airtight seal. In
Scroll compressor (1,921 words) [view diff] exact match in snippet view article find links to article
scroll compressor (also called spiral compressor, scroll pump and scroll vacuum pump) is a device for compressing air or refrigerant. It is used in air
Kirby Company (5,021 words) [view diff] exact match in snippet view article find links to article
-81.7687082 The Kirby Company (stylized as KIRBY) is a manufacturer of vacuum cleaners and home cleaning accessories, based in Cleveland, Ohio, United
Rectifier (8,775 words) [view diff] exact match in snippet view article find links to article
direction of current. Physically, rectifiers take a number of forms, including vacuum tube diodes, wet chemical cells, mercury-arc valves, stacks of copper and
Railway air brake (3,659 words) [view diff] exact match in snippet view article find links to article
were divided – some using vacuum brakes and some using air brakes – but there was a gradual standardization on the vacuum brake. Some locomotives, e
Roomba (4,236 words) [view diff] exact match in snippet view article find links to article
Roomba is a series of autonomous robotic vacuum cleaners sold by iRobot. Introduced in September 2002, Roombas feature a set of sensors that enable them
Spontaneous symmetry breaking (3,337 words) [view diff] exact match in snippet view article find links to article
symmetries, but the lowest-energy vacuum solutions do not exhibit that same symmetry. When the system goes to one of those vacuum solutions, the symmetry is
Thermoforming (1,462 words) [view diff] exact match in snippet view article find links to article
or onto a mold and cooled to a finished shape. Its simplified version is vacuum forming. In its simplest form, a small tabletop or lab size machine can
Jumbotron (853 words) [view diff] no match in snippet view article find links to article
A jumbotron, sometimes referred to as jumbovision, is a video display using large-screen television technology (video wall). The original technology was
Electronvolt (1,934 words) [view diff] exact match in snippet view article find links to article
accelerating from rest through an electric potential difference of one volt in vacuum. When used as a unit of energy, the numerical value of 1 eV in joules (symbol
Radiometer (370 words) [view diff] exact match in snippet view article find links to article
vanes which are dark on one side, and light on the other) in a partial vacuum spins when exposed to light. A common belief (one originally held even by
Tiger Corporation (543 words) [view diff] exact match in snippet view article find links to article
Mahōbin Kabushiki Gaisha, lit. 'Tiger Vacuum Flask [Magic-jar] Corporation') is a Japanese manufacturer that applies vacuum insulation and heat control technology
Diesel fuel (6,055 words) [view diff] exact match in snippet view article find links to article
compression and decompression rattle by making the pistons effectively work in vacuum. In more advanced control systems this FRP valve can be shut by an electronic
Photomultiplier (195 words) [view diff] exact match in snippet view article find links to article
tube, a vacuum tube converting incident photons into an electric signal. Photomultiplier tubes (PMTs for short) are members of the class of vacuum tubes
Murder of Jun Lin (6,490 words) [view diff] exact match in snippet view article find links to article
kittens which showed a man deliberately suffocating two kittens with a vacuum cleaner. In January 2011, a private Facebook group identified Magnotta as
Wake Shield Facility (640 words) [view diff] exact match in snippet view article find links to article
free of gas molecules. The WSF thus created an ultrahigh vacuum in its wake. The resulting vacuum was used to study epitaxial film growth. The WSF operated
EmDrive (7,687 words) [view diff] exact match in snippet view article find links to article
to the "quantum vacuum virtual plasma." Baez and Carroll criticized this explanation, because in the standard description of vacuum fluctuations, virtual
Thyratron (1,460 words) [view diff] exact match in snippet view article find links to article
rectifier. Thyratrons can handle much greater currents than similar hard-vacuum tubes. Electron multiplication occurs when the gas becomes ionized, producing
Biasing (1,324 words) [view diff] exact match in snippet view article find links to article
an amplifier. Many electronic devices, such as diodes, transistors and vacuum tubes, whose function is processing time-varying (AC) signals, also require
Virtual particle (2,770 words) [view diff] exact match in snippet view article find links to article
the Casimir effect between two atoms. Vacuum polarization, which involves pair production or the decay of the vacuum, which is the spontaneous production
Cyclonic separation (1,853 words) [view diff] exact match in snippet view article find links to article
household, as the core technology in bagless types of portable vacuum cleaners and central vacuum cleaners. Cyclones are also used in industrial and professional
Fleming valve (1,348 words) [view diff] exact match in snippet view article find links to article
valve, also called the Fleming oscillation valve, was a thermionic valve or vacuum tube invented in 1904 by English physicist John Ambrose Fleming as a detector
Traveling-wave tube (2,083 words) [view diff] exact match in snippet view article find links to article
traveling-wave tube amplifier (TWTA, pronounced "tweeta") is a specialized vacuum tube that is used in electronics to amplify radio frequency (RF) signals
Motor–generator (1,523 words) [view diff] exact match in snippet view article find links to article
not require exposed drive shafts. Low-powered consumer devices such as vacuum tube vehicle radio receivers did not use expensive, noisy and bulky motor–generators
Investment casting (3,017 words) [view diff] exact match in snippet view article find links to article
under the term vacuum casting. Vacuum pressure casting (VPC), properly referred to as vacuum assist direct pour, uses gas pressure and a vacuum to improve
Anode (2,426 words) [view diff] exact match in snippet view article find links to article
cathode is slightly different for electrical devices such as diodes and vacuum tubes where the electrode naming is fixed and does not depend on the actual
Kerr metric (5,921 words) [view diff] exact match in snippet view article find links to article
the Kerr vacuum family (two parameters). In this sense, the Kerr vacuums are the simplest stationary axisymmetric asymptotically flat vacuum solutions
Switchgear (2,493 words) [view diff] exact match in snippet view article find links to article
breakers. Today, oil-filled equipment has largely been replaced by air-blast, vacuum, or SF6 equipment, allowing large currents and power levels to be safely
Radio receiver (16,366 words) [view diff] exact match in snippet view article find links to article
used in some early vacuum tube radios because they were more sensitive than the vacuum tube grid-leak detector. During the vacuum tube era, the term "detector"
Liquid nitrogen (1,844 words) [view diff] exact match in snippet view article find links to article
freezing point 63 K (−210 °C; −346 °F) by placing it in a vacuum chamber pumped by a vacuum pump. Liquid nitrogen's efficiency as a coolant is limited
RCA (8,796 words) [view diff] exact match in snippet view article find links to article
American Marconi had been falling behind industry advances, particularly in vacuum tube technology, and GE needed access to additional patents before its new
Taub–NUT space (491 words) [view diff] exact match in snippet view article find links to article
Taub-NUT Milne Robertson–Walker pp-wave van Stockum dust Weyl–Lewis–Papapetrou Vacuum solution Theorems Birkhoff's theorem Geroch's splitting theorem Goldberg–Sachs
26 Broadway (4,973 words) [view diff] exact match in snippet view article find links to article
26 Broadway, also known as the Standard Oil Building or Socony–Vacuum Building, is an office building located adjacent to Bowling Green park in the Financial
Lee de Forest (8,616 words) [view diff] exact match in snippet view article find links to article
most famous invention, in 1906, was the three-element "Audion" (triode) vacuum tube, the first practical amplification device. Although De Forest had only
Pentode (1,502 words) [view diff] exact match in snippet view article find links to article
active electrodes. The term most commonly applies to a three-grid amplifying vacuum tube (thermionic valve), which was invented by Gilles Holst and Bernhard
Electric arc furnace (4,422 words) [view diff] exact match in snippet view article find links to article
and similar specialty metal industries. Vacuum arc remelting (VAR) is a secondary remelting process for vacuum refining and manufacturing of ingots with
Pentode (1,502 words) [view diff] exact match in snippet view article find links to article
active electrodes. The term most commonly applies to a three-grid amplifying vacuum tube (thermionic valve), which was invented by Gilles Holst and Bernhard
Red supergiant star (4,010 words) [view diff] no match in snippet view article find links to article
Hertzsprung–Russell diagram Spectral type Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Bright giants Supergiants
Magic eye tube (1,297 words) [view diff] exact match in snippet view article find links to article
indicator, in technical literature called an electron-ray indicator tube, is a vacuum tube which gives a visual indication of the amplitude of an electronic signal
Apple chip (642 words) [view diff] exact match in snippet view article find links to article
fried, vacuum fried, dehydrated or baked. Apple chips may have a dense and crispy texture, or may be puffed, yet still crispy. Microwave vacuum-drying
Carpet cleaning (2,618 words) [view diff] exact match in snippet view article find links to article
carpets. Common methods include hot water extraction, dry-cleaning, and vacuuming. Although there is an actual steam cleaning industrial process, in the
Nonode (98 words) [view diff] exact match in snippet view article find links to article
nine active electrodes. The term most commonly applies to a seven-grid vacuum tube, also sometimes called an enneode. An example was the EQ80/UQ80, which
Transmission electron microscopy (12,448 words) [view diff] exact match in snippet view article find links to article
vacuum sealed. The vacuum system for evacuating a TEM to an operating pressure level consists of several stages. Initially, a low or roughing vacuum is
Dilation and curettage (1,706 words) [view diff] exact match in snippet view article find links to article
includes the more common suction curettage procedures of manual and electric vacuum aspiration. D&Cs may be performed in pregnant and non-pregnant patients
Ultimate fate of the universe (3,636 words) [view diff] exact match in snippet view article find links to article
currently exists in a false vacuum and that it could become a true vacuum at any moment. In order to best understand the false vacuum collapse theory, one must
Desalination (9,154 words) [view diff] exact match in snippet view article find links to article
greening, respectively the regeneration of natural fresh water cycles. In vacuum distillation atmospheric pressure is reduced, thus lowering the temperature
Central vacuum cleaner (4,153 words) [view diff] exact match in snippet view article find links to article
A central vacuum cleaner (also known as built-in or ducted) is a type of vacuum cleaner appliance, installed into a building as a semi-permanent fixture
Exact solutions in general relativity (3,503 words) [view diff] exact match in snippet view article find links to article
electromagnetic field and a positive vacuum energy, as well as a kind of vacuum perturbation of the Kerr vacuum which is specified by the so-called NUT
Pair production (1,347 words) [view diff] no match in snippet view article find links to article
Pair production is the creation of a subatomic particle and its antiparticle from a neutral boson. Examples include creating an electron and a positron
Schwarzschild metric (4,721 words) [view diff] exact match in snippet view article find links to article
general relativity, the Schwarzschild metric (also known as the Schwarzschild vacuum or Schwarzschild solution) is the solution to the Einstein field equations
Photomultiplier tube (4,383 words) [view diff] exact match in snippet view article find links to article
(photomultipliers or PMTs for short), members of the class of vacuum tubes, and more specifically vacuum phototubes, are extremely sensitive detectors of light
Audiophile (2,055 words) [view diff] exact match in snippet view article find links to article
equalization devices, preamplifiers and amplifiers (both solid-state and vacuum tube), horn and electrostatic speakers, power conditioners, subwoofers,
Terra nullius (4,056 words) [view diff] no match in snippet view article find links to article
Terra nullius (/ˈtɛrə nʌˈlaɪəs/, plural terrae nullius) is a Latin expression meaning "nobody's land". It was a principle sometimes used in international
Nuvistor (424 words) [view diff] exact match in snippet view article find links to article
The nuvistor is a type of vacuum tube announced by RCA in 1959. Most nuvistors are basically thimble-shaped, but somewhat smaller than a thimble, and much
Futaba Corporation (304 words) [view diff] exact match in snippet view article find links to article
to produce vacuum tubes. As time passed, production and elemental techniques of the vacuum tube transformed into the manufacturing of vacuum fluorescent
Vise (1,032 words) [view diff] exact match in snippet view article find links to article
machine vise as a bench vise because of the low cost and small size. A vacuum vise is a hobbyist's tool, commonly used to hold circuit boards, model airplanes
Gyrotron (1,206 words) [view diff] exact match in snippet view article find links to article
A gyrotron is a class of high-power linear-beam vacuum tubes which generates millimeter-wave electromagnetic waves by the cyclotron resonance of electrons
Monoscope (548 words) [view diff] no match in snippet view article find links to article
A monoscope was a special form of video camera tube which displayed a single still video image. The image was built into the tube, hence the name. The
Maxwell's equations (7,549 words) [view diff] exact match in snippet view article find links to article
fluctuating electric and magnetic fields propagate at a constant speed (c) in a vacuum. Known as electromagnetic radiation, these waves may occur at various wavelengths
Ignition timing (2,461 words) [view diff] exact match in snippet view article find links to article
manifold. This provides full engine vacuum (and hence, full vacuum advance) at idle. Some vacuum advance units have two vacuum connections, one at each side
Sous vide (2,663 words) [view diff] exact match in snippet view article find links to article
Sous vide (/suːˈviːd/; French for 'under vacuum'), also known as low temperature long time (LTLT) cooking, is a method of cooking in which food is placed
Klystron (3,023 words) [view diff] exact match in snippet view article find links to article
A klystron is a specialized linear-beam vacuum tube, invented in 1937 by American electrical engineers Russell and Sigurd Varian, which is used as an amplifier
Vacuum dry box (128 words) [view diff] exact match in snippet view article find links to article
A Vacuum Dry Box is a piece of safety equipment which can provide an inert, or controlled atmosphere for handling sensitive materials. These devices can
Photoelectric effect (6,448 words) [view diff] exact match in snippet view article find links to article
emitted into a solid rather than into a vacuum, the term internal photoemission is often used, and emission into a vacuum is distinguished as external photoemission
List of contributors to general relativity (1,744 words) [view diff] exact match in snippet view article find links to article
Baker, Jr. (high-frequency gravitational waves), James M. Bardeen (Bardeen vacuum, black hole mechanics, gauge-invariant linear perturbations of Friedmann-Lemaître
Avascular necrosis (2,185 words) [view diff] exact match in snippet view article find links to article
necrosis of left femoral head. Man of 45 years with AIDS. The intravertebral vacuum cleft sign (at white arrow) is a sign of avascular necrosis. Avascular necrosis
Compactron (792 words) [view diff] exact match in snippet view article find links to article
Compactrons are a type of thermionic valve, or vacuum tube, which contain multiple electrode structures packed into a single enclosure. They were designed
Atlas Copco (1,814 words) [view diff] exact match in snippet view article find links to article
assembly systems. The Group operates in four areas: Compressor Technique, Vacuum Technique, Construction Technique and Industrial Technique. AB Atlas, as
Sanitary sewer (1,659 words) [view diff] exact match in snippet view article find links to article
typically a house or business. Vacuum sewer systems use differential atmospheric pressure to move the liquid to a central vacuum station. Sanitary sewer overflow
Williams tube (1,564 words) [view diff] exact match in snippet view article find links to article
earlier acoustic delay line memory, at the speed of the electrons inside the vacuum tube, rather than at the speed of sound. However, the system was adversely
Zojirushi Corporation (174 words) [view diff] exact match in snippet view article find links to article
Kabushiki-gaisha) is a Japanese multinational manufacturer and marketer of vacuum flasks, beverage dispensers, and consumer electronics including bread machines
Amplitude modulation (4,277 words) [view diff] exact match in snippet view article find links to article
amplifying ability of the Audion vacuum tube, invented in 1906 by Lee de Forest, solved these problems. The vacuum tube feedback oscillator, invented
Cosmological constant problem (1,564 words) [view diff] exact match in snippet view article find links to article
the cosmological constant problem or vacuum catastrophe is the disagreement between the observed values of vacuum energy density (the small value of the
Autoclave (2,009 words) [view diff] exact match in snippet view article find links to article
atmospheric pressure. Vacuum pumps: a vacuum pump sucks air or air/steam mixtures from the chamber. Superatmospheric cycles: achieved with a vacuum pump. It starts
Stochastic quantum mechanics (898 words) [view diff] exact match in snippet view article find links to article
interpretation of quantum mechanics is due to persistent vacuum fluctuation. The main idea is that vacuum or spacetime fluctuations are the reason for quantum
Beam tetrode (1,042 words) [view diff] exact match in snippet view article find links to article
beam tetrode, sometimes called a "beam power tube", is a type of tetrode vacuum tube (or 'valve') with auxiliary beam-focusing plates designed to augment
Wavenumber (1,384 words) [view diff] exact match in snippet view article find links to article
above, since the radian is dimensionless. For electromagnetic radiation in vacuum, wavenumber is proportional to frequency and to photon energy. Because of
Vacuum servo (1,170 words) [view diff] exact match in snippet view article find links to article
A vacuum servo is a component used on motor vehicles in their braking system, to provide assistance to the driver by decreasing the braking effort. In
Williams tube (1,564 words) [view diff] exact match in snippet view article find links to article
earlier acoustic delay line memory, at the speed of the electrons inside the vacuum tube, rather than at the speed of sound. However, the system was adversely
Voltmeter (1,098 words) [view diff] exact match in snippet view article find links to article
once-popular form of this instrument used a vacuum tube in the amplifier circuit and so was called the vacuum tube voltmeter, or VTVM. These were almost
Crankcase ventilation system (1,736 words) [view diff] exact match in snippet view article find links to article
crankcase. The system usually consists of a tube, a one-way valve and a vacuum source (such as the intake manifold). The unwanted gases, called "blow-by"
Transfer molding (1,305 words) [view diff] exact match in snippet view article find links to article
components in addition to the fiber preform. Vacuum assisted transfer molding (VARTM) uses a partial vacuum on one side of a fiber mat to pull the resin
Physical constant (3,095 words) [view diff] exact match in snippet view article find links to article
science, some of the most widely recognized being the speed of light in vacuum c, the gravitational constant G, the Planck constant h, the electric constant
Physical vapor deposition (1,252 words) [view diff] exact match in snippet view article find links to article
contexts) called physical vapor transport (PVT), describes a variety of vacuum deposition methods which can be used to produce thin films and coatings
Dried fruit (4,157 words) [view diff] exact match in snippet view article find links to article
water is lowered under vacuum, causing a high temperature inside the dried particles on the surface of the product. Microwave vacuum drying is a dehydration
Street sweeper (1,122 words) [view diff] exact match in snippet view article find links to article
efficiently. Today, modern street sweepers are mounted on truck bodies and can vacuum debris that accumulates in streets. Play media Newer street sweepers are
Soyuz (rocket family) (2,981 words) [view diff] exact match in snippet view article
991 kN (223 klbf) in vacuum Specific impulse 245 seconds (2.40 km/s) at liftoff Specific impulse 310 seconds (3.0 km/s) in vacuum Chamber pressure 5.85
Thermal cooking (1,099 words) [view diff] exact match in snippet view article find links to article
A thermal cooker, or a vacuum flask cooker, is a cooking device that uses thermal insulation to retain heat and cook food without the continuous use of
Atanasoff–Berry computer (2,483 words) [view diff] exact match in snippet view article find links to article
announced the ABC as "an electrical computing machine" with more than 300 vacuum tubes that would "compute complicated algebraic equations" (but gave no
Sputter deposition (2,390 words) [view diff] exact match in snippet view article find links to article
target in straight lines and impact energetically on the substrates or vacuum chamber (causing resputtering). Alternatively, at higher gas pressures,
Nozzle (1,081 words) [view diff] exact match in snippet view article find links to article
to come out in a cone shape. Vacuum cleaner nozzles come in several different shapes. Vacuum Nozzles are used in vacuum cleaners. Some nozzles are shaped
Specific impulse (3,348 words) [view diff] exact match in snippet view article find links to article
effective exhaust velocity are the same in rocket engines operating in a vacuum. Specific impulse is inversely proportional to specific fuel consumption
Cosmological constant problem (1,564 words) [view diff] exact match in snippet view article find links to article
the cosmological constant problem or vacuum catastrophe is the disagreement between the observed values of vacuum energy density (the small value of the
List of vacuum tube computers (834 words) [view diff] exact match in snippet view article find links to article
Vacuum tube computers, now termed first generation computers, are programmable digital computers using vacuum tube logic circuitry. They were preceded
Gravitational acceleration (1,803 words) [view diff] exact match in snippet view article find links to article
gravitational acceleration is the free fall acceleration of an object in vacuum — without any drag. This is the steady gain in speed caused exclusively
Laboratory flask (1,224 words) [view diff] exact match in snippet view article find links to article
from the bottom. The flasks are used to cooperate with vacuum aspirator or vacuum pumps in the vacuum filtration, or as additional security during the distillation
Currency packaging (402 words) [view diff] exact match in snippet view article find links to article
and dirt. Vacuum-packed banknotes also take up less space in containers used for transportation. Currency units are vacuum packed using a vacuum sealer.
IBM 704 (1,562 words) [view diff] exact match in snippet view article find links to article
in terms of architecture and implementation. Like the 701, the 704 uses vacuum tube logic circuitry and 36-bit binary words. Changes from the 701 include
Spherical cow (680 words) [view diff] exact match in snippet view article find links to article
have the solution, but it works only in the case of spherical cows in a vacuum". It is told in many variants, including a joke about a physicist who said
Clarified butter (390 words) [view diff] exact match in snippet view article find links to article
may also be accomplished by decantation and centrifugation followed by vacuum drying; or direct from cream by breaking the emulsion followed by centrifugation
Gravastar (1,151 words) [view diff] exact match in snippet view article find links to article
"gravitational vacuum star". In the original formulation by Mazur and Mottola, gravastars contain a central region featuring a p = −ρ false vacuum or "dark
VFD (85 words) [view diff] exact match in snippet view article find links to article
to: Factory Workers' Union of Germany, a former trade union in Germany Vacuum fluorescent display, a display device on consumer electronics equipment
Selectron tube (1,956 words) [view diff] exact match in snippet view article find links to article
of America (RCA) under the direction of Vladimir K. Zworykin. It was a vacuum tube that stored digital data as electrostatic charges using technology
Eureka (company) (555 words) [view diff] exact match in snippet view article
Chinese company Midea Group that manufactures vacuums for all households. The company offers a full line of vacuum cleaners, including uprights, cordless, canisters
Catalaphyllia (368 words) [view diff] exact match in snippet view article find links to article
Bedot, 1907 Euphyllia sabiuraensis Eguchi, 1973 Flabellum multifore Gardiner, 1904 Flabellum vacuum Crossland, 1952 Pectinia jardinei Saville Kent, 1893
Electronic symbol (877 words) [view diff] exact match in snippet view article find links to article
transistor (BJT) NPN Darlington PNP Darlington Vacuum tube diode Vacuum tube triode Vacuum tube tetrode Vacuum tube pentode Switch, Single Pole/Single Throw
IRobot (2,754 words) [view diff] exact match in snippet view article find links to article
in Delaware, the company's products include a range of autonomous home vacuum cleaners (Roomba), floor moppers (Braava), and other autonomous cleaning
Electron gun (579 words) [view diff] exact match in snippet view article find links to article
electron gun (also called electron emitter) is an electrical component in some vacuum tubes that produces a narrow, collimated electron beam that has a precise
Dispersion relation (1,671 words) [view diff] exact match in snippet view article find links to article
travel, and t is the time at which the wave is described. Plane waves in vacuum are the simplest case of wave propagation: no geometric constraint, no interaction
Vacuum Oil Company (562 words) [view diff] exact match in snippet view article find links to article
Vacuum Oil Company was an American oil company known for its Gargoyle 600-W Steam Cylinder Oil. Vacuum Oil merged with the Standard Oil Co of New York
LG Electronics (3,606 words) [view diff] exact match in snippet view article find links to article
home appliances including refrigerators, washing machines, tumble dryers, vacuum cleaners, air conditioners and microwave ovens. In June 2014, LG Electronics
Sugarcane mill (1,595 words) [view diff] exact match in snippet view article find links to article
under vacuum in a vacuum boiling pan until it becomes supersaturated, finely ground sugar crystals suspended in alcohol are introduced into the vacuum pan
Automated vacuum collection (1,842 words) [view diff] exact match in snippet view article find links to article
An automated vacuum waste collection system, also known as pneumatic refuse collection, or automated vacuum collection (AVAC), transports waste at high
Pectus excavatum (5,047 words) [view diff] exact match in snippet view article find links to article
inactivation of artificial pacemakers if present. An alternative to surgery, the vacuum bell, was described in 2006; the procedure is also referred to as treatment
Small Tight Aspect Ratio Tokamak (830 words) [view diff] exact match in snippet view article find links to article
pulse transformer, vacuum tank, toroidal and poloidal field coils, and a limiter. The support structure positioned and supported the vacuum tank which also
Electron affinity (1,480 words) [view diff] exact match in snippet view article find links to article
defined differently than in chemistry and atomic physics. For a semiconductor-vacuum interface (that is, the surface of a semiconductor), electron affinity,
Black star (semiclassical gravity) (435 words) [view diff] exact match in snippet view article
particle falling to the center of its star, because quantum processes create vacuum polarization, which creates a form of degeneracy pressure, preventing spacetime
Degassing (759 words) [view diff] exact match in snippet view article find links to article
efficiency. This technique is often referred to as vacuum degasification. Specialized vacuum chambers, called vacuum degassers, are used to degas materials through
Scoop stretcher (317 words) [view diff] exact match in snippet view article find links to article
maintain the patient in a supine alignment during transfer to a stretcher, vacuum mattress or long spine board). They are more comfortable than a long spine
Sutton tube (1,774 words) [view diff] exact match in snippet view article find links to article
A Sutton tube, or reflex klystron, is a type of vacuum tube used to generate microwaves. It is a low-power device used primarily for two purposes; one
Higgs boson (23,053 words) [view diff] exact match in snippet view article find links to article
other known fields, therefore, the Higgs field has a non-zero value (or vacuum expectation) everywhere. This non-zero value could in theory break electroweak
Plastic pipework (2,706 words) [view diff] exact match in snippet view article find links to article
gases, compressed air, irrigation, plastic pressure pipe systems, and vacuum system applications. There are three basic types of plastic pipes: Extruded
Inductive output tube (1,315 words) [view diff] exact match in snippet view article find links to article
The inductive output tube (IOT) or klystrode is a variety of linear-beam vacuum tube, similar to a klystron, used as a power amplifier for high frequency
ENIAC (7,461 words) [view diff] exact match in snippet view article find links to article
computed result. By the end of its operation in 1956, ENIAC contained 18,000 vacuum tubes; 7,200 crystal diodes; 1,500 relays; 70,000 resistors; 10,000 capacitors;
Vacuum polarization (1,609 words) [view diff] exact match in snippet view article find links to article
In quantum field theory, and specifically quantum electrodynamics, vacuum polarization describes a process in which a background electromagnetic field
Higgs mechanism (5,939 words) [view diff] exact match in snippet view article find links to article
particles are massless. At a critical temperature, the Higgs field develops a vacuum expectation value; the symmetry is spontaneously broken by tachyon condensation
Spontaneous emission (2,558 words) [view diff] exact match in snippet view article find links to article
system of a two-level atom interacting with a quantized field mode (i.e. the vacuum) within an optical cavity. It gave the nonintuitive prediction that the
Fractional distillation (2,166 words) [view diff] exact match in snippet view article find links to article
condenser, such as a Liebig condenser or Allihn condenser vacuum adapter (only required if performing vacuum distillation; not used in image to the right) standard
Skin pack (288 words) [view diff] exact match in snippet view article find links to article
etc.) is softened by heat and draped over the product on the card/tray. Vacuum is sometimes used to assist a firm fit. The film bonds to the heat-seal
Beam deflection tube (919 words) [view diff] exact match in snippet view article find links to article
Beam deflection tubes, sometimes known as sheet beam tubes, are vacuum tubes with an electron gun, a beam intensity control grid, a screen grid, sometimes
Coulomb constant (777 words) [view diff] exact match in snippet view article find links to article
\varepsilon _{0}}},} where ε 0 {\displaystyle \varepsilon _{0}} is the vacuum permittivity. This formula can be derived from Gauss' law, S {\displaystyle
Bunny boots (605 words) [view diff] exact match in snippet view article find links to article
felt insulation between two vacuum-tight layers of rubber; this vacuum layer insulates the wearer's feet similar to a vacuum flask. These boots were originally
Fermi level (3,154 words) [view diff] exact match in snippet view article find links to article
electron in the vacuum as a reference point for energies. This approach is not advisable unless one is careful to define exactly where the vacuum is. The problem
Hot cathode (2,572 words) [view diff] exact match in snippet view article find links to article
In vacuum tubes and gas-filled tubes, a hot cathode or thermionic cathode is a cathode electrode which is heated to make it emit electrons due to thermionic
Flange (1,797 words) [view diff] exact match in snippet view article find links to article
some emergency or defect. A vacuum flange is a flange at the end of a tube used to connect vacuum chambers, tubing and vacuum pumps to each other. In microwave
Covariant formulation of classical electromagnetism (3,713 words) [view diff] exact match in snippet view article find links to article
diag(+1, −1, −1, −1). Where the equations are specified as holding in a vacuum, one could instead regard them as the formulation of Maxwell's equations
Journal of Vacuum Science and Technology (216 words) [view diff] exact match in snippet view article find links to article
The Journal of Vacuum Science and Technology is a peer-reviewed scientific journal published in two parts, A and B, by the American Institute of Physics
ITER (8,297 words) [view diff] exact match in snippet view article find links to article
steel structure surrounding the vacuum vessel and the superconducting magnets, in order to provide a super-cool vacuum environment. Its thickness ranging
Dekatron (679 words) [view diff] exact match in snippet view article find links to article
in various physical sizes, ranging from smaller than a 7-pin miniature vacuum tube to as large as an octal base tube. While most dekatrons are decimal
Cyclotron (3,813 words) [view diff] exact match in snippet view article find links to article
accelerates charged particles outwards from the center of a flat cylindrical vacuum chamber along a spiral path. The particles are held to a spiral trajectory
Radio wave (2,859 words) [view diff] exact match in snippet view article find links to article
other electromagnetic waves, radio waves travel at the speed of light in vacuum. Radio waves are generated by charged particles undergoing acceleration
Liquid chromatography–mass spectrometry (4,851 words) [view diff] exact match in snippet view article find links to article
system is a pressurized liquid, the MS analyzers commonly operate under high vacuum (around 10−6 Torr / 10−7 "Hg). Thus, it is not possible to directly pump
Brake (2,307 words) [view diff] exact match in snippet view article find links to article
and wedge brakes. Most modern passenger vehicles, and light vans, use a vacuum assisted brake system that greatly increases the force applied to the vehicle's
Erlenmeyer flask (952 words) [view diff] exact match in snippet view article find links to article
Büchner flask is a common design modification used for filtration under vacuum. Play media The slanted sides and narrow neck of this flask allow the contents
Tetrode (4,407 words) [view diff] exact match in snippet view article find links to article
A tetrode is a vacuum tube (called valve in British English) having four active electrodes. The four electrodes in order from the centre are: a thermionic
Voltage-regulator tube (941 words) [view diff] exact match in snippet view article find links to article
constant at a pre-determined level. Physically, these devices resemble vacuum tubes, but there are two main differences: Their glass envelopes are filled
Edwin Howard Armstrong (7,516 words) [view diff] exact match in snippet view article find links to article
"grid Audion" vacuum-tube. How vacuum tubes worked was not understood at the time. De Forest's initial Audions did not have a high vacuum and developed
Dairy farming (8,837 words) [view diff] exact match in snippet view article find links to article
pulled up into the milk-return pipe by the vacuum system, and then flows by gravity to the milkhouse vacuum-breaker that puts the milk in the storage tank
Black hole (16,921 words) [view diff] exact match in snippet view article find links to article
this solution in 1916. According to Birkhoff's theorem, it is the only vacuum solution that is spherically symmetric. This means there is no observable
Uncontrolled decompression (3,699 words) [view diff] exact match in snippet view article find links to article
to a vacuum can be found in both space exploration and high-altitudes aviation. Research and experience have shown that while exposure to a vacuum causes
Alan Guth (2,267 words) [view diff] exact match in snippet view article find links to article
of exponential expansion that was driven by a positive vacuum energy density (negative vacuum pressure). The results of the WMAP mission in 2006 made
Pneumatics (974 words) [view diff] exact match in snippet view article find links to article
regulator Pressure sensor Pressure switch Launched roller coaster Vacuum pump Vacuum sewer Pneumatic systems in fixed installations, such as factories
Carbon fiber reinforced polymer (5,127 words) [view diff] exact match in snippet view article find links to article
and the vacuum is pulled and set aside to allow the piece to cure (harden). There are three ways to apply the resin to the fabric in a vacuum mold. The
Attitude indicator (1,220 words) [view diff] exact match in snippet view article find links to article
placed along its periphery. The stream of air is provided by a vacuum system, driven by a vacuum pump, or a venturi. Air passing through the narrowest portion
Valve amplifier (2,898 words) [view diff] exact match in snippet view article find links to article
amplifier or tube amplifier is a type of electronic amplifier that uses vacuum tubes to increase the amplitude or power of a signal. Low to medium power
Solar cooker (3,742 words) [view diff] exact match in snippet view article find links to article
Evacuated tube solar cookers are essentially a vacuum sealed between two layers of glass. The vacuum allows the tube to act both as a "super" greenhouse
Acorn tube (538 words) [view diff] exact match in snippet view article find links to article
acorn tube, or acorn valve, refers to any member of a family of VHF/UHF vacuum tubes starting just before World War II. They were named after their resemblance
Charactron (412 words) [view diff] no match in snippet view article find links to article
Charactron was a U.S. registered trademark (number 0585950, 23 February 1954) of Consolidated Vultee Aircraft Corporation (Convair) for its shaped electron
Refraction (2,589 words) [view diff] exact match in snippet view article find links to article
medium and returns to a vacuum, and ignoring any effects of gravity, its speed returns to the usual speed of light in a vacuum, c. Common explanations
Pfeiffer Vacuum (183 words) [view diff] exact match in snippet view article find links to article
Pfeiffer Vacuum Technology AG is a German manufacturer of vacuum pumps. It is headquartered in Aßlar in Germany with 70% of the total production catering
FFKM (279 words) [view diff] exact match in snippet view article find links to article
they are O-plasma vacuum cleaned (and/or vacuum baked) to reach out-gassing performance similar to Teflon while reaching vacuum leak tightness (permeability
Manual vacuum cleaner (859 words) [view diff] exact match in snippet view article find links to article
The manual vacuum cleaner was a type of non-electric vacuum cleaner, using suction to remove dirt from carpets, being powered by human muscle, similar
Vacuum Diagrams (392 words) [view diff] exact match in snippet view article find links to article
Vacuum Diagrams is a collection of science fiction short stories by British writer Stephen Baxter. The collection connects the novels of the Xeelee Sequence
Evaporating dish (419 words) [view diff] exact match in snippet view article find links to article
be used under vacuum, avoiding unwanted reactions with the atmosphere and allowing control of noxious fumes. Evaporation under vacuum also reduces the
Hose (624 words) [view diff] exact match in snippet view article find links to article
semi-trailers Vacuum hoses Vacuum brake hoses have been used in Vacuum brake systems ever since the technology was invented in the mid-1860s. Vacuum cleaners
Kiln (3,291 words) [view diff] exact match in snippet view article find links to article
typically passive. Vacuum and radio frequency kilns reduce the air pressure to attempt to speed up the drying process. A variety of these vacuum technologies
Goldstone boson (2,583 words) [view diff] exact match in snippet view article find links to article
action of these generators, and can thus be excited out of the asymmetric vacuum by these generators. Thus, they can be thought of as the excitations of
Glovebox (757 words) [view diff] exact match in snippet view article find links to article
nitrogen. It is also possible to use a glovebox for manipulation of items in a vacuum chamber. The gas in a glovebox is pumped through a series of treatment devices
List of Dyson products (2,096 words) [view diff] exact match in snippet view article find links to article
bagless vacuum cleaners (using cyclonic separation and brushless electric motors), heatless hand dryers, bladeless fans/heaters, and robotic vacuum cleaners
Albert W. Hull (858 words) [view diff] exact match in snippet view article find links to article
physicist and electrical engineer who made contributions to the development of vacuum tubes, and invented the magnetron. He was a member of the National Academy
State space (1,060 words) [view diff] exact match in snippet view article find links to article
the toy problem Vacuum World has a discrete finite state space in which there are a limited set of configurations that the vacuum and dirt can be in
Boltzmann brain (2,735 words) [view diff] exact match in snippet view article find links to article
spacetime vacuum lacking vacuum energy). Quantum mechanics heavily favors smaller fluctuations that "borrow" the least amount of energy from the vacuum. Typically
Wightman axioms (2,684 words) [view diff] exact match in snippet view article find links to article
Poincaré-invariant state called the vacuum and demand it is unique. Moreover, the axioms assume that the vacuum is "cyclic", i.e., that the set of all
Miele (1,019 words) [view diff] exact match in snippet view article find links to article
and handled finances and sales. In 1927, Miele started the production of vacuum cleaners. In 1929, the first electric dishwasher in Europe was produced
Inflation (cosmology) (12,914 words) [view diff] exact match in snippet view article
found that if the universe contained a field in a positive-energy false vacuum state, then according to general relativity it would generate an exponential
Pentagrid converter (2,488 words) [view diff] exact match in snippet view article find links to article
The pentagrid converter is a type of radio receiving valve (vacuum tube) with five grids used as the frequency mixer stage of a superheterodyne radio receiver
A Perfect Vacuum (1,316 words) [view diff] exact match in snippet view article find links to article
A Perfect Vacuum (Polish: Doskonała próżnia) is a 1971 book by Polish author Stanisław Lem, the largest and best known collection of Stanislaw Lem's fictitious
Ferritic nitrocarburizing (1,829 words) [view diff] exact match in snippet view article find links to article
nitrocarburizing is also known as controlled nitrocarburizing, soft nitriding, and vacuum nitrocarburizing or by the tradenames UltraOx, Nitrotec, Nitemper, Deganit
TR-55 (488 words) [view diff] exact match in snippet view article find links to article
The use of transistors allowed the device to be much smaller than earlier vacuum tube radios. Akio Morita and Masaru Ibuka, then operating under the business
Sylvania Electric Products (1,139 words) [view diff] exact match in snippet view article find links to article
diverse electrical equipment, including at various times radio transceivers, vacuum tubes, semiconductors, and mainframe computers such as MOBIDIC. They were
Yvonne Choquet-Bruhat (2,071 words) [view diff] exact match in snippet view article find links to article
manifold. An initial data set (M, g, k) satisfies the vacuum constraint equations, or is said to be a vacuum initial data set, if the following two equations
Lunch meat (733 words) [view diff] exact match in snippet view article find links to article
in sandwiches or on a tray. They can be purchased pre-sliced, usually in vacuum packs, or they can be sliced to order. Bresaola Chicken breast Chicken loaf
Suck (111 words) [view diff] exact match in snippet view article find links to article
Suck may refer to: Suction, the force exerted by a partial vacuum Suck (band), a South African hard rock group Suck, drummer for the 1990s Japanese punk
Luxman (1,938 words) [view diff] exact match in snippet view article find links to article
making vacuum tube amplifiers of the highest caliber. One of the traits of Luxman equipment from this era is the quality and warmth of vacuum tube sound
Schlenk flask (1,360 words) [view diff] exact match in snippet view article find links to article
using a vacuum-gas manifold, also known as a Schlenk line. This involves pumping the air out of the flask and replacing the resulting vacuum with an inert
Rotary vacuum-drum filter (3,050 words) [view diff] exact match in snippet view article find links to article
A Rotary Vacuum Filter Drum consists of a drum rotating in a tub of liquid to be filtered. The technique is well suited to slurries, and liquids with a
Sengoku period (1,677 words) [view diff] exact match in snippet view article find links to article
Various samurai warlords and clans fought for control over Japan in the power vacuum, while the Ikkō-ikki emerged to fight against samurai rule. The arrival
Quantum electrodynamics (5,838 words) [view diff] exact match in snippet view article find links to article
can be described as a perturbation theory of the electromagnetic quantum vacuum. Richard Feynman called it "the jewel of physics" for its extremely accurate
Socony–Mobil Building (4,427 words) [view diff] exact match in snippet view article find links to article
building in 1952. The developers convinced Mobil (at the time known as Socony-Vacuum) to be the anchor tenant, relocating into half of the structure from their
BSH Hausgeräte (268 words) [view diff] no match in snippet view article find links to article
BSH Hausgeräte GmbH (or BSH Home Appliances) is the largest manufacturer of home appliances in Europe and one of the leading companies in the sector worldwide
Transconductance (1,095 words) [view diff] exact match in snippet view article find links to article
of gm for a small-signal vacuum tube are 1 to 10 millisiemens. It is one of the three characteristic constants of a vacuum tube, the other two being
Diamond blade (1,345 words) [view diff] exact match in snippet view article find links to article
cuttings. Vacuum brazed diamond saws are manufactured by brazing synthetic diamond particles to the outside edge of the circular saw blade in a vacuum brazing
MISTIC (758 words) [view diff] exact match in snippet view article find links to article
University and was built by its students, faculty and staff in 1957. Powered by vacuum tubes, its design was based on ILLIAC, the supercomputer built at University
Distortion (music) (5,364 words) [view diff] exact match in snippet view article
electric blues originally obtained an overdriven sound by turning up their vacuum tube-powered guitar amplifiers to high volumes, which caused the signal
Big Rip (1,014 words) [view diff] exact match in snippet view article find links to article
continue forever Entropy (arrow of time) False vacuum – A hypothetical vacuum, less stable than true vacuum Heat death of the universe – Possible end of
Fire proximity suit (324 words) [view diff] exact match in snippet view article find links to article
used in the 1930s. Originally made of asbestos fabric, current models use vacuum-deposited aluminized materials. Fire proximity suits first appeared during
IBM 700/7000 series (2,200 words) [view diff] exact match in snippet view article find links to article
includes several different, incompatible processor architectures. The 700s use vacuum-tube logic and were made obsolete by the introduction of the transistorized
Magnolia Petroleum Company (242 words) [view diff] exact match in snippet view article find links to article
merged with Vacuum Oil Company in 1931, becoming Socony-Vacuum Oil Company. Magnolia Petroleum continued to operate as a subsidiary of Socony-Vacuum. In 1959
Ozsváth–Schücking metric (550 words) [view diff] exact match in snippet view article find links to article
The Ozsváth–Schücking metric, or the Ozsváth–Schücking solution, is a vacuum solution of the Einstein field equations. The metric was published by István
Vintage amateur radio (2,313 words) [view diff] exact match in snippet view article find links to article
operate amateur radio equipment from bygone years, such as those using vacuum tube technology. Popular modes of operation include speaking over amplitude
Light-year (1,865 words) [view diff] exact match in snippet view article find links to article
Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year (365.25 days). Because it includes the word "year", the
Paper machine (6,538 words) [view diff] exact match in snippet view article find links to article
which removes water from the paper by sucking it out of suspension via vacuum. Press section, where the wet fibre web passes between large rolls loaded
EDVAC (1,048 words) [view diff] exact match in snippet view article find links to article
the serial memory's recirculation cycle. The computer had almost 6,000 vacuum tubes and 12,000 diodes, and consumed 56 kW of power. It covered 490 ft²
Vacuum mattress (1,153 words) [view diff] exact match in snippet view article find links to article
A vacuum mattress, or vacmat, is a medical device used for the immobilisation of patients, especially in case of a vertebra, pelvis or limb trauma (especially
Venipuncture (3,043 words) [view diff] exact match in snippet view article find links to article
of the needle. The vacuum in the tube then automatically draws the needed blood directly from the patient's vein. Multiple vacuum tubes can be attached
Band diagram (1,347 words) [view diff] exact match in snippet view article find links to article
an electron in an infinitely large, homogeneous material (a crystal or vacuum), whereas in a band diagram the horizontal axis represents position in space
Quantum vacuum thruster (5,151 words) [view diff] exact match in snippet view article find links to article
A quantum vacuum thruster (QVT or Q-thruster) is a theoretical system hypothesized to use the same principles and equations of motion that a conventional
Cryostat (1,216 words) [view diff] exact match in snippet view article find links to article
Hence it is usually assembled into a vessel, similar in construction to a vacuum flask or Dewar. Cryostats have numerous applications within science, engineering
Numatic International (989 words) [view diff] exact match in snippet view article find links to article
major producers of vacuum cleaners in the United Kingdom and is best known for producing the popular and iconic Henry domestic vacuum cleaner and its related
Singer Corporation (3,173 words) [view diff] no match in snippet view article find links to article
Singer Corporation is an American manufacturer of consumer sewing machines, first established as I. M. Singer & Co. in 1851 by Isaac M. Singer with New
IBM 701 (1,356 words) [view diff] exact match in snippet view article find links to article
configuration) was about 20,516 pounds (10.3 short tons; 9.3 t). The system used vacuum tube logic circuitry and electrostatic storage, consisting of 72 Williams
Containment building (3,254 words) [view diff] exact match in snippet view article find links to article
stations utilize a water spray equipped vacuum building. All individual CANDU units on site are connected to this vacuum building by a large pressure relief
Storage tube (1,465 words) [view diff] no match in snippet view article find links to article
Storage tubes are a class of cathode-ray tubes (CRTs) that are designed to hold an image for a long period of time, typically as long as power is supplied
Whirlwind I (3,388 words) [view diff] exact match in snippet view article find links to article
Whirlwind I was a Cold War-era vacuum tube computer developed by the MIT Servomechanisms Laboratory for the U.S. Navy. It was among the first digital electronic
Tesla coil (10,077 words) [view diff] exact match in snippet view article find links to article
displays, although small coils are still used as leak detectors for high vacuum systems. A Tesla coil is a radio frequency oscillator that drives an air-core
American Vacuum Society (334 words) [view diff] exact match in snippet view article find links to article
Technology of Materials, Interfaces, and Processing (formerly American Vacuum Society) is a not-for-profit learned society founded in 1953 focused on
Nanosecond (452 words) [view diff] exact match in snippet view article find links to article
to travel 1 foot in a vacuum. 3.3356409519815 nanoseconds (by definition) – time taken by light to travel 1 metre in a vacuum. 10 nanoseconds – one "shake"
Edward S. Rogers Sr. (875 words) [view diff] exact match in snippet view article find links to article
Canadian inventor and pioneer in the radio industry who founded the Rogers Vacuum Tube Company and the CFRB radio station in Toronto, Ontario. His only child
Chao Meng-Fu (crater) (521 words) [view diff] exact match in snippet view article
shelter large quantities of ice protected against sublimation into the near-vacuum by the constant −171 °C (−276 °F) temperatures. Radar studies involving
Cryostat (1,216 words) [view diff] exact match in snippet view article find links to article
Hence it is usually assembled into a vessel, similar in construction to a vacuum flask or Dewar. Cryostats have numerous applications within science, engineering
IAS machine (1,118 words) [view diff] exact match in snippet view article find links to article
available: the Accumulator (AC) and Multiplier/Quotient (MQ). It used 1,700 vacuum tubes (triode types: 6J6, 5670, 5687, a few diodes: type 6AL5, 150 pentodes
Scanning tunneling microscope (4,077 words) [view diff] exact match in snippet view article find links to article
routinely imaged and manipulated. The STM can be used not only in ultra-high vacuum but also in air, water, and various other liquid or gas ambients, and at
Weak hypercharge (585 words) [view diff] exact match in snippet view article find links to article
field. Since the Higgs field vacuum expectation value is nonzero, particles interact with this field all the time even in vacuum. This changes their weak
Telefunken (2,004 words) [view diff] exact match in snippet view article find links to article
"Telefunken AG"). During the Second World War, Telefunken was a supplier of vacuum tubes, transmitters and radio relay systems, and developed Funkmess facilities
Vacuum (band) (594 words) [view diff] exact match in snippet view article
Vacuum is the name of a Swedish pop band. The members are Mattias Lindblom and Anders Wollbeck. They also work as song writers and producers under the
Andrei Linde (1,779 words) [view diff] exact match in snippet view article find links to article
supercooled metastable vacuum state (a false vacuum). The universe then expanded exponentially – "inflated" – until the false vacuum decayed and the universe
Household goods (324 words) [view diff] exact match in snippet view article find links to article
tables, toasters and toaster ovens, tools, towels, toys, televisions, vacuum cleaners, umbrellas, robotics, and washer/dryers. Businesses that produce
Neon lamp (2,852 words) [view diff] exact match in snippet view article find links to article
since been replaced by other display devices such as light emitting diodes, vacuum fluorescent displays, and liquid crystal displays. Since at least the 1940s
Passenger train toilet (860 words) [view diff] exact match in snippet view article find links to article
this case, toilets may back up, which can result in toilets being closed. Vacuum systems used in the newest carriages are similar to those in airliners:
Aircraft lavatory (1,588 words) [view diff] exact match in snippet view article find links to article
progressed to "vacuum flush" technology to eliminate solid and liquid residue from the basin, patented in 1975. Some of the advantages of vacuum flush technology
Brans–Dicke theory (2,250 words) [view diff] exact match in snippet view article find links to article
{\displaystyle \phi =1} , become exact vacuum solutions in Brans–Dicke theory, but some spacetimes which are not vacuum solutions to the Einstein field equation
Rutherford (rocket engine) (858 words) [view diff] exact match in snippet view article
rocket using a cluster of nine identical engines on the first stage, and one vacuum-optimized version with a longer nozzle on the second stage. This arrangement
Instant coffee (2,522 words) [view diff] exact match in snippet view article find links to article
Massachusetts as a process-development company employing high-vacuum technology. It developed high-vacuum processes to produce penicillin, blood plasma, and streptomycin
Transistor computer (1,485 words) [view diff] exact match in snippet view article find links to article
which uses discrete transistors instead of vacuum tubes. The first generation of electronic computers used vacuum tubes, which generated large amounts of
Fibre-reinforced plastic (5,848 words) [view diff] exact match in snippet view article find links to article
into a cavity which is under vacuum in resin transfer molding. Resin is entirely pulled into cavity under vacuum in vacuum-assisted resin transfer molding
Backward-wave oscillator (2,461 words) [view diff] exact match in snippet view article find links to article
for tubes manufactured by CSF, now Thales) or backward wave tube, is a vacuum tube that is used to generate microwaves up to the terahertz range. Belonging
Standard Oil (6,593 words) [view diff] exact match in snippet view article find links to article
marketing network. Socony-Vacuum had Asian marketing outlets supplied remotely from California. In 1933, Jersey Standard and Socony-Vacuum merged their interests
History of the steam engine (6,356 words) [view diff] exact match in snippet view article find links to article
were:" The concept of a vacuum (i.e. a reduction in pressure below ambient) The concept of pressure Techniques for creating a vacuum A means of generating
Papermaking (2,247 words) [view diff] exact match in snippet view article find links to article
further removed from this sheet by pressing, sometimes aided by suction or vacuum, or heating. Once dry, a generally flat, uniform and strong sheet of paper
Wormhole (6,276 words) [view diff] exact match in snippet view article find links to article
Nathan Rosen), are connections between areas of space that can be modeled as vacuum solutions to the Einstein field equations, and that are now understood to
Pneumatosis (2,346 words) [view diff] exact match in snippet view article find links to article
presentation on radiography is a radiolucent cleft often called a vacuum phenomenon, or vacuum sign. Pneumarthrosis is associated with osteoarthritis and spondylosis
Electron-stimulated luminescence (587 words) [view diff] exact match in snippet view article find links to article
Inc. Archived from the original on 5 March 2012. Retrieved 21 May 2016. "Vacuum light sources - High speed stroboscopic light sources" (PDF). Ferranti Instruments
Cock ring (1,224 words) [view diff] exact match in snippet view article find links to article
gel is always used to help the pump maintain a vacuum, in the same way vacuum grease is used with a vacuum pump in scientific applications. The gel also
Control grid (877 words) [view diff] exact match in snippet view article find links to article
The control grid is an electrode used in amplifying thermionic valves (vacuum tubes) such as the triode, tetrode and pentode, used to control the flow
Goldberg–Sachs theorem (1,235 words) [view diff] exact match in snippet view article find links to article
Goldberg–Sachs theorem is a result in Einstein's theory of general relativity about vacuum solutions of the Einstein field equations relating the existence of a certain
Battery (vacuum tube) (856 words) [view diff] exact match in snippet view article
In the early days of electronics, vacuum tube (called valves in British contexts) devices (such as radios) were powered by batteries. Each battery had
Kasner metric (762 words) [view diff] exact match in snippet view article find links to article
relativity. It describes an anisotropic universe without matter (i.e., it is a vacuum solution). It can be written in any spacetime dimension D > 3 {\displaystyle
Low-level laser therapy (3,941 words) [view diff] no match in snippet view article find links to article
Low-level laser therapy (LLLT) is a form of medicine that applies low-level (low-power) lasers or light-emitting diodes (LEDs) to the surface of the body
Bunch–Davies vacuum (465 words) [view diff] exact match in snippet view article find links to article
in flat space. This state is usually called the Bunch–Davies vacuum or Euclidean vacuum, actually was first obtained by N.A. Chernikov and E. A. Tagirov
Distributor (2,023 words) [view diff] exact match in snippet view article find links to article
addition, the distributor has a vacuum advance unit that advances the timing even further as a function of the vacuum in the inlet manifold. Usually there
Vacuum ceramic filter (2,570 words) [view diff] exact match in snippet view article find links to article
A vacuum ceramic filter is designed to separate liquids from solids for dewatering purposes. The device consists of a rotator, slurry tank, ceramic filter
Transmitter (2,346 words) [view diff] exact match in snippet view article find links to article
Meissner around 1912, based on the Audion (triode) vacuum tube invented by Lee De Forest in 1906. Vacuum tube transmitters were inexpensive and produced
Noise generator (976 words) [view diff] exact match in snippet view article find links to article
generation. For example, temperature-controlled resistors, temperature-limited vacuum diodes, zener diodes, and gas discharge tubes. A source that can be switched
Wood drying (8,871 words) [view diff] exact match in snippet view article find links to article
most efficient with energy usage. At a vacuum water boils at a lower temperature. In addition to speed a vacuum kiln can also produce an improved quality
Submersible pump (1,567 words) [view diff] exact match in snippet view article find links to article
pumps push fluid to the surface as opposed to jet pumps which create a vacuum and rely upon atmospheric pressure. Submersibles use pressurised fluid from
9 track tape (2,313 words) [view diff] exact match in snippet view article find links to article
reels by storing a short length of tape in the vacuum column under relatively low tension. The vacuum columns were chambers open at one end, the openings
NMR tube (1,172 words) [view diff] exact match in snippet view article find links to article
of the apparatus 4. A vacuum is applied (usually via a water aspirator via the vacuum inlet). The NMR tube cap forms a vacuum seal. Solvent 7 is drawn
Secondary emission (592 words) [view diff] exact match in snippet view article find links to article
emission of electrons when charged particles like electrons or ions in a vacuum tube strike a metal surface; these are called secondary electrons. In this
James Dewar (1,790 words) [view diff] exact match in snippet view article find links to article
Scottish chemist and physicist. He is best known for his invention of the vacuum flask, which he used in conjunction with research into the liquefaction
Retainer (orthodontics) (921 words) [view diff] exact match in snippet view article
retainer, which is not practical with vacuum-formed retainers. Another common type of removable retainer is the vacuum formed retainer (VFR). This is a polypropylene
British Rail Class 76 (1,793 words) [view diff] exact match in snippet view article find links to article
Westinghouse air brakes and dual air and vacuum brakes were provided for the train. For operations in the Netherlands, the vacuum brake equipment was disconnected
Weak isospin (920 words) [view diff] exact match in snippet view article find links to article
field. Since the Higgs field vacuum expectation value is nonzero, particles interact with this field all the time even in vacuum. This changes their weak
Vacuum switch (141 words) [view diff] exact match in snippet view article find links to article
engine vacuum was used for many functions in an automobile. Vacuum switches were employed to regulate this flow. For instance a dual port vacuum switch
History of salt (2,276 words) [view diff] exact match in snippet view article find links to article
closed pan system where the brine solution is evaporated under a partial vacuum. In the second half of the 19th century, industrial mining and new drilling
Freeze-dried ice cream (571 words) [view diff] exact match in snippet view article find links to article
cream is placed in a vacuum chamber and frozen until the water crystallizes. The air pressure is lowered, creating a partial vacuum, forcing air out of
Nordström's theory of gravitation (6,618 words) [view diff] exact match in snippet view article find links to article
{\displaystyle \Box \phi =4\pi \,\rho } . This has the result of changing the vacuum field equation from the Laplace equation to the wave equation, which means
Plate electrode (467 words) [view diff] exact match in snippet view article find links to article
usually called anode in Britain, is a type of electrode that forms part of a vacuum tube. It is usually made of sheet metal, connected to a wire which passes
Building insulation (5,724 words) [view diff] exact match in snippet view article find links to article
the effectiveness of the vacuum insulation. The effectiveness of the vacuum insulation is also related to the area of the vacuum panels. Bulk insulators
12AX7 (1,102 words) [view diff] exact match in snippet view article find links to article
12AX7 (also known as ECC83) is a vacuum tube that is a miniature dual triode - 6AV6 with high voltage gain. It was developed around 1946 by RCA engineers
Erectile dysfunction (3,992 words) [view diff] exact match in snippet view article find links to article
FDA approved vacuum therapy devices are available under prescription. When pharmacological methods fail, a purpose-designed external vacuum pump can be
Bodum (306 words) [view diff] exact match in snippet view article find links to article
as chief executive. Among the products Bodum markets are French presses, vacuum coffee brewers (the "Santos"), and double-walled beverage glasses made in
Honeywagon (vehicle) (443 words) [view diff] exact match in snippet view article
A honeywagon is the slang term for a "vacuum truck" for collecting and carrying human excreta. These vehicles may be used to empty the sewage tanks of
Stochastic electrodynamics (2,843 words) [view diff] exact match in snippet view article find links to article
many-worlds interpretation. SED describes energy contained in the electromagnetic vacuum at absolute zero as a stochastic, fluctuating zero-point field. The motion
IBM 709 (1,029 words) [view diff] exact match in snippet view article find links to article
array drivers are all vacuum tube, the read sense amplifiers were a very early use of transistors in computing. List of vacuum tube computers IBM 740
Analog synthesizer (1,405 words) [view diff] exact match in snippet view article find links to article
the 1920s and 1930s, such as the Trautonium, were built with a variety of vacuum-tube (thermionic valve) and electro-mechanical technologies. After the 1960s
FUJIC (256 words) [view diff] exact match in snippet view article find links to article
performance achieved was double that number. Employing approximately 1,700 vacuum tubes, the computer's word length was 33 bits. It had an ultrasonic mercury
IBM 650 (2,797 words) [view diff] exact match in snippet view article find links to article
Console Unit housed the magnetic drum storage, arithmetical device (using vacuum tubes) and the operator's console. IBM 655 Power Unit IBM 533 or IBM 537
Steam brake (313 words) [view diff] exact match in snippet view article find links to article
were primarily used on railways where vacuum brakes were used to brake the train, but where there was no vacuum brake on the steam locomotive itself,
Davisson–Germer experiment (1,631 words) [view diff] exact match in snippet view article find links to article
atoms on their way towards the surface, the experiment was conducted in a vacuum chamber. To measure the number of electrons that were scattered at different
Raised-relief map (1,628 words) [view diff] exact match in snippet view article find links to article
machining a master model, and vacuum forming copies from this, can be been used to rapidly mass-produce raised-relief maps. The Vacuum Forming technique, invented
Electron ionization (4,000 words) [view diff] exact match in snippet view article find links to article
sample insertion used. The gaseous and highly volatile liquid samples use a vacuum manifold, solids and less volatile liquids use a direct insertion probe
Proton (5,987 words) [view diff] exact match in snippet view article find links to article
result is a protonated atom, which is a chemical compound of hydrogen. In vacuum, when free electrons are present, a sufficiently slow proton may pick up
Logic gate (3,298 words) [view diff] exact match in snippet view article find links to article
transistors acting as electronic switches, but can also be constructed using vacuum tubes, electromagnetic relays (relay logic), fluidic logic, pneumatic logic
Groundwater remediation (2,040 words) [view diff] exact match in snippet view article find links to article
within the capillary fringe. Bioslurping combines elements of bioventing and vacuum-enhanced pumping of free-product that is lighter than water (light non-aqueous
Zanussi (903 words) [view diff] no match in snippet view article find links to article
Zanussi (Italian: [ˈdzanus.si]) is an Italian producer of home appliances that was bought by Electrolux in 1984. Zanussi has been exporting products from
Valve audio amplifier (2,007 words) [view diff] exact match in snippet view article find links to article
A valve audio amplifier (UK) or vacuum tube audio amplifier (United States) is a valve amplifier used for sound reinforcement, sound recording and reproduction
H-IIB (1,095 words) [view diff] exact match in snippet view article find links to article
thrust 9,220 kN (2,070,000 lbf) Specific impulse 283.6 seconds (2.781 km/s) (Vacuum) Burn time 114 seconds Fuel HTPB First stage Length 38 m (125 ft) Diameter
Breast biopsy (2,001 words) [view diff] exact match in snippet view article find links to article
different types of breast biopsies include fine needle aspiration (FNA), vacuum assisted biopsy, core needle biopsy, and surgical excision biopsy. Breast
Quantization (physics) (1,374 words) [view diff] exact match in snippet view article
quantum states of the field theory. The lowest energy state is called the vacuum state. The reason for quantizing a theory is to deduce properties of materials
Kenmore (brand) (709 words) [view diff] exact match in snippet view article
portfolio is sold at Sears, Kmart, and Amazon. In 2019, the brand's grills and vacuum cleaners were offered at Lowe's, The Home Depot and Target. The brand first
Zenit-3F (166 words) [view diff] exact match in snippet view article find links to article
Level: 7,257 kN (1,631,000 lbf) Vacuum: 7,908 kN (1,778,000 lbf) Specific impulse Sea Level: 309.5 s (3.035 km/s) Vacuum: 337.2 s (3.307 km/s) Burn time
Bunsen burner (1,332 words) [view diff] exact match in snippet view article find links to article
with multiple gas nozzles connected to a central gas source, as well as vacuum, nitrogen, and steam nozzles. The gas then flows up through the base through
Vertex operator algebra (7,440 words) [view diff] exact match in snippet view article find links to article
sometimes written | 0 ⟩ {\displaystyle |0\rangle } or Ω to indicate a vacuum state. an endomorphism T : V → V, called "translation". (Borcherds's original
List of deep fried foods (1,056 words) [view diff] exact match in snippet view article find links to article
performed with a deep fryer or chip pan, and industrially, a pressure fryer or vacuum fryer may be used. Deep frying is classified as a dry cooking method because
Edison and Swan Electric Light Company (472 words) [view diff] exact match in snippet view article find links to article
Ltd. Edison Swan (or later Siemens Edison Swan) produced a wide range of vacuum tubes and cathode ray tubes under the names "Ediswan" or "Mazda" and the
RAYDAC (176 words) [view diff] exact match in snippet view article find links to article
Air Missile Test Center at Point Mugu, California. The RAYDAC used 5,200 vacuum tubes and 18,000 crystal diodes. It had 1,152 words of memory (thirty-six
Contactor (2,367 words) [view diff] exact match in snippet view article find links to article
medium-voltage AC motor controllers use vacuum contactors. High voltage AC contactors (greater than 1,000 volts) may use vacuum or an inert gas around the contacts
Hot water extraction (369 words) [view diff] exact match in snippet view article find links to article
carpet at high pressure and all lifted soil being removed by a powerful vacuum. Though commonly called "steam cleaning", no actual steam is involved in
Tungsram (598 words) [view diff] exact match in snippet view article find links to article
Lightbulb and Electronic Ltd Tungsram vacuum tubes Tungsram vacuum tubes Tungsram vacuum tubes Tungsram vacuum tubes Tungsram SC (sports club) Free English
Caesium (9,171 words) [view diff] exact match in snippet view article find links to article
spectroscopy. The first small-scale applications for caesium were as a "getter" in vacuum tubes and in photoelectric cells. In 1967, acting on Einstein's proof that
Flush toilet (9,747 words) [view diff] exact match in snippet view article find links to article
It can also be connected to a septic tank. A vacuum toilet is a flush toilet that is connected to a vacuum sewer system, and removes waste by suction.
Dattatraya Yeshwant Phadke (66 words) [view diff] exact match in snippet view article find links to article
Institute of Fundamental Research. He was also the founder of the Indian Vacuum Society. He was awarded the Padma Bhushan, third-highest civilian honour
Anti-Fascist Action (1,802 words) [view diff] exact match in snippet view article find links to article
marches, punch-ups". In 1995 London AFA responded with its Filling the Vacuum strategy, which involved offering a political alternative in these communities
Semi-automatic transmission (3,518 words) [view diff] exact match in snippet view article find links to article
while other manufactures have used alternate methods of actuation, like vacuum-operated or electromagnetic clutches. Hall effect sensors sense the direction
BESM (605 words) [view diff] exact match in snippet view article find links to article
Only one BESM-1 machine was built. The machine used approximately 5,000 vacuum tubes. At the time of completion, it was the fastest computer in Europe
Breakthrough Propulsion Physics Program (1,266 words) [view diff] exact match in snippet view article find links to article
Abraham–Minkowski electromagnetic momentum, interpreting inertia and gravity quantum vacuum effects, and the Podkletnov force beam. One of the eight tasks funded by
Electron multiplier (748 words) [view diff] exact match in snippet view article find links to article
An electron multiplier is a vacuum-tube structure that multiplies incident charges. In a process called secondary emission, a single electron can, when
Instanton (5,825 words) [view diff] exact match in snippet view article find links to article
Since this solution jumps from one classical vacuum x = − 1 {\displaystyle x=-1} to another classical vacuum x = 1 {\displaystyle x=1} instantaneously around
Steam locomotive components (1,576 words) [view diff] exact match in snippet view article find links to article
35 Brake hose – Air or vacuum hose for transmitting brake system pressure/vacuum to train brakes. See air brake and vacuum brake. 36 Water compartment –
British Rail Class 109 (304 words) [view diff] exact match in snippet view article find links to article
Aluminium was used for panels, luggage racks, window frames, vacuum pipes and fuel and vacuum tanks. The corrugated steel floor was filled with sprayed asbestos
Crossed-field amplifier (516 words) [view diff] exact match in snippet view article find links to article
A crossed-field amplifier (CFA) is a specialized vacuum tube, first introduced in the mid-1950s and frequently used as a microwave amplifier in very-high-power
Hubert Cecil Booth (1,137 words) [view diff] exact match in snippet view article find links to article
engineer best known today for having invented one of the first powered vacuum cleaners. He also designed Ferris wheels, suspension bridges and factories
Abortion in Nepal (482 words) [view diff] exact match in snippet view article find links to article
allowed to choose between Manual Vacuum Aspiration (MVA) and Medical Abortion (MA) abortion procedures. Manual Vacuum Aspiration: It is a moderately invasive
He Jin (1,171 words) [view diff] exact match in snippet view article find links to article
eunuch faction in revenge, the warlord Dong Zhuo took advantage of the power vacuum to enter the imperial capital Luoyang and seize control of the Han central
South African Class 5E, Series 1 (1,187 words) [view diff] exact match in snippet view article find links to article
operate trains with vacuum brakes. While hauling a train, the locomotive's air brake system would be made subordinate to the train's vacuum brake system and
Qingxu Daode Zhenjun (289 words) [view diff] no match in snippet view article find links to article
Qingxu Daode Zhenju (Chinese: 清虛道德真君; Pinyin: Qīngxū Dàodé Zhēnjūn) a character featured within the famed classic Chinese novel Investiture of the Gods
1941 Ford (1,924 words) [view diff] exact match in snippet view article find links to article
were available in addition to the vacuum-powered wipers. Three different convertible power top mechanisms (vacuum, electric screw, and hydraulic) and
Fluid catalytic cracking (3,911 words) [view diff] exact match in snippet view article find links to article
higher. This portion of crude oil is often referred to as heavy gas oil or vacuum gas oil (HVGO). In the FCC process, the feedstock is heated to a high temperature
TEPREL (645 words) [view diff] exact match in snippet view article find links to article
produce 81.6 kN of thrust at sea level. Version of TEPREL-C adapted to vacuum, and capable of re-ignition in microgravity conditions. Capable of 65 kN
Effusion (1,344 words) [view diff] exact match in snippet view article find links to article
pleural effusions. Effusion from an equilibrated container into outside vacuum can be calculated based on kinetic theory. The number of atomic or molecular