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searching for Radio Waves (radio station) 191 found (1247 total)

alternate case: radio Waves (radio station)

Radio wave (899 words) [view diff] no match in snippet view article find links to article

Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light. ...
Radio (9,907 words) [view diff] no match in snippet view article find links to article
When radio waves strike an electrical conductor , the oscillating fields induce an alternating current in the conductor. in the waves can ...
Electromagnetic radiation (10,052 words) [view diff] no match in snippet view article find links to article
Radio waves: Radio waves. When EM radiation at the frequencies for which it is referred to as "radio waves" impinges upon a conductor , it ...
Radio astronomy (3,091 words) [view diff] no match in snippet view article find links to article
The initial detection of radio waves from an astronomical object was made in the 1930s, when Karl Jansky observed radiation coming from ...
Radio frequency (2,173 words) [view diff] no match in snippet view article find links to article
around 3 | ul kHz to 300 | ul GHz, which corresponds to the frequency of radio waves , and the alternating current s which carry radio signals. ...
Radio Waves (song) (403 words) [view diff] no match in snippet view article find links to article
"Radio Waves" is the opening track from Roger Waters ' second solo studio album, Radio K.A.O.S. It was chosen as the lead single for the ...
Radio Waves (album) (385 words) [view diff] no match in snippet view article find links to article
Radio Waves is a comedy album by The Bob & Tom Show , which was not released to the general public but only to men and women serving ...
AM broadcasting (6,548 words) [view diff] no match in snippet view article find links to article
The discovery in the 1920s of the "skip" or "skywave " propagation mechanism, in which high frequency radio waves are reflected back to ...
Radio propagation (4,008 words) [view diff] no match in snippet view article find links to article
light waves, radio waves are affected by the phenomena of reflection , refraction , diffraction , absorption , polarization and scattering ...
Jet Black & Jealous (493 words) [view diff] no match in snippet view article find links to article
After it came "Always the Love Songs" at 11, and "Radio Waves" at 35. " "Guinevere" is the album's fourth single, debuting in early 2010. ...
High frequency (1,750 words) [view diff] no match in snippet view article find links to article
High frequency (HF) is the ITU designation for the range of radio frequency electromagnetic wave s (radio waves) between 3 and 30 MHz . ...
Radio K.A.O.S. (3,511 words) [view diff] no match in snippet view article find links to article
Since Billy can hear radio waves in his head ("Radio Waves" track 1), he begins to explore the cordless phone, recognising its similarity ...
Hydrogen line (1,922 words) [view diff] no match in snippet view article find links to article
After initial suggestions that this was due to the Sun, it was observed that the radio waves seemed to be coming from the centre of the ...
Electronic pest control (1,768 words) [view diff] no match in snippet view article find links to article
html "Radio Waves May Offer a New, Environmentally Safe Pest Control Method", USDA press release. Category:Consumer electronics Category: ...
Radio broadcasting (3,803 words) [view diff] no match in snippet view article find links to article
Radio broadcasting is a one-way wireless transmission over radio waves intended to reach a wide audience . be linked in radio network s to ...
Extremely low frequency (2,945 words) [view diff] no match in snippet view article find links to article
ELF radio waves are generated by lightning and natural disturbances in Earth's magnetic field, so they are a subject of research by ...
Ionosphere (4,468 words) [view diff] no match in snippet view article find links to article
bouncing radio waves of different frequencies from it, incoherent scatter radars such as the EISCAT , Sondre Stromfjord, Millstone Hill ...
Skywave (2,020 words) [view diff] no match in snippet view article find links to article
In radio communication , skywave or skip refers to the propagation of radio waves reflected or refracted back toward Earth from the ...
Antenna (radio) (11,872 words) [view diff] no match in snippet view article find links to article
alternating current (AC) to the antenna's terminals, and the antenna radiates the energy from the current as electromagnetic wave s (radio waves). ...
Nikola Tesla (18,544 words) [view diff] no match in snippet view article find links to article
Tesla's theories on the possibility of the transmission by radio waves go back as far as lectures and demonstrations in 1893 in St. Louis ...
Bluetooth (10,884 words) [view diff] no match in snippet view article find links to article
Bluetooth is a wireless technology standard for exchanging data over short distances (using short-wavelength UHF radio waves in the ISM ...
Sunset Strip (song) (398 words) [view diff] no match in snippet view article find links to article
However, Billy is highly intelligent and gifted, and can hear radio waves in his head. cordless phone, recognizing its similarity to a radio. ...
Ionospheric absorption (365 words) [view diff] no match in snippet view article find links to article
interaction between various types of electromagnetic waves and the free electrons in the ionosphere , which can interfere with radio transmissions. ...
Continuous wave (936 words) [view diff] no match in snippet view article find links to article
In early wireless telegraphy radio transmission, CW waves were also known as "undamped waves", to distinguish this method from damped ...
Astronomical radio source (1,830 words) [view diff] no match in snippet view article find links to article
Astronomical radio sources are objects in outer space that emit strong radio waves . Radio emission comes from a wide variety of sources ...
Roger Waters (9,884 words) [view diff] no match in snippet view article find links to article
based on a mute man named Billy from an impoverished Welsh mining town who has the ability to physically tune into radio waves in his head. ...
Radar (10,654 words) [view diff] no match in snippet view article find links to article
The radar dish or antenna transmits pulses of radio waves or microwave s that bounce off any object in their path. of the wave's energy to a ...
Transmitter (2,030 words) [view diff] no match in snippet view article find links to article
The term transmitter is usually limited to equipment that generates radio waves for communication purposes; or radiolocation , such as ...
The Bob & Tom Show (2,722 words) [view diff] no match in snippet view article find links to article
Radio Waves (October 2009 - fifth USO Care Package troop-only album) As Big As a Hat (November 2008) Greetings from the USA (October 2008 ...
Transverse wave (908 words) [view diff] no match in snippet view article find links to article
For transverse waves in matter the displacement of the medium is perpendicular to the direction of propagation of the wave. transverse waves. ...
Electromagnetic spectrum (5,180 words) [view diff] no match in snippet view article find links to article
are used for transmission of data, via modulation . Television , mobile phone s, wireless networking , and amateur radio all use radio waves. ...
Arecibo message (1,483 words) [view diff] no match in snippet view article find links to article
The Arecibo message was broadcast into space a single time via frequency modulated radio waves at a ceremony to mark the remodeling of ...
History of radar (21,437 words) [view diff] no match in snippet view article find links to article
The history of radar starts with experiments by Heinrich Hertz in the late 19th century that showed that radio waves were reflected by ...
Parabolic antenna (4,610 words) [view diff] no match in snippet view article find links to article
is an antenna that uses a parabolic reflector , a curved surface with the cross-sectional shape of a parabola , to direct the radio waves. ...
Ionospheric sounding (182 words) [view diff] no match in snippet view article find links to article
In telecommunication and radio science, an ionospheric sounding is a technique that provides real-time data on high-frequency ...
Timeline of radio (3,471 words) [view diff] no match in snippet view article find links to article
The timeline of radio lists within the history of radio , the technology and events that produced instruments that use radio waves and ...
Communication with submarines (1,404 words) [view diff] no match in snippet view article find links to article
Communication with submarines is difficult because radio waves do not travel well through good electrical conductor s like salt water. ...
Wireless telegraphy (8,982 words) [view diff] no match in snippet view article find links to article
It is now used as a historical term for early radio telegraphy systems which communicated with radio waves, although when the term ...
Radiation (6,177 words) [view diff] no match in snippet view article find links to article
Radio waves: Radio waves. Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than ...
Detector (radio) (1,948 words) [view diff] no match in snippet view article find links to article
transmitters transmitted information by wireless telegraphy , using different length pulses of radio waves to spell out text messages in Morse code . ...
Radionics (1,323 words) [view diff] no match in snippet view article find links to article
Radionics is the idea that disease can be diagnosed and treated with a kind of energy similar to radio waves. The concept behind radionics ...
Shortwave radio (5,709 words) [view diff] no match in snippet view article find links to article
propagation , in which the radio waves are reflected back to Earth from the ionosphere , allowing communication around the curve of the Earth. ...
Fiorella Terenzi (2,832 words) [view diff] no match in snippet view article find links to article
Fiorella Terenzi is an Italian-born astrophysicist , author and recording artist who is best known for taking recordings of radio waves ...
Frequency of optimum transmission (138 words) [view diff] no match in snippet view article find links to article
Frequency of optimum transmission (FOT), in the transmission of radio waves via ionospheric reflection , is the highest effective (i.e. ...
Earth–ionosphere waveguide (1,544 words) [view diff] no match in snippet view article find links to article
The Earth–ionosphere waveguide refers to the phenomenon in which certain radio waves can propagate in the space between the ground and the ...
Ultra high frequency (2,248 words) [view diff] no match in snippet view article find links to article
Radio waves with frequencies above the UHF band fall into the SHF (super-high frequency ) or microwave frequency range. Lower frequency ...
Sea interferometry (664 words) [view diff] no match in snippet view article find links to article
Sea interferometry, also known as Sea-cliff interferometry, is a form of radio astronomy that uses radio waves reflected off the sea to ...
Conductive keratoplasty (94 words) [view diff] no match in snippet view article find links to article
Conductive keratoplasty (CK) is a type of refractive surgery that uses radio waves to adjust the contour of the cornea by shrinking the ...
Luxemburg–Gorky effect (211 words) [view diff] no match in snippet view article find links to article
In radiophysics , the Luxemburg–Gorky effect is a phenomenon of cross modulation between two radio waves , one of which is strong, passing ...
Magnetic resonance imaging of the brain (614 words) [view diff] no match in snippet view article find links to article
Magnetic resonance imaging (MRI) of the brain and brain stem uses magnetic fields and radio waves to produce high quality two- or ...
Intentional radiator (53 words) [view diff] no match in snippet view article find links to article
An intentional radiator is any device that is designed to produce radio waves on purpose. Radio transmitters of all kinds, including the ...
Receiver (radio) (2,908 words) [view diff] no match in snippet view article find links to article
The antenna intercepts radio waves (electromagnetic wave s) and converts them to tiny alternating current s which are applied to the ...
Near-field electromagnetic ranging (1,044 words) [view diff] no match in snippet view article find links to article
Near-field electromagnetic ranging (NFER) refers to any radio technology employing the near-field properties of radio waves as a Real ...
Radio propagation model (941 words) [view diff] no match in snippet view article find links to article
Created with the goal of formalizing the way radio waves are propagated from one place to another, such models typically predict the path ...
Microwave (4,116 words) [view diff] no match in snippet view article find links to article
In 1888, Heinrich Hertz was the first to demonstrate the existence of radio waves by building a spark gap radio transmitter that ...
Invention of radio (15,458 words) [view diff] no match in snippet view article find links to article
(radio waves) were being transmitted and instead attributed it to what he called “electrostatic thrusts with the real signals being ...
Diffraction (5,726 words) [view diff] no match in snippet view article find links to article
Diffraction occurs with all waves, including sound waves, water waves , and electromagnetic waves such as visible light , X-ray s and radio waves . ...
Incoherent scatter (285 words) [view diff] no match in snippet view article find links to article
arnumber 4065300 | title Incoherent Scattering of Radio Waves by Free Electrons with Applications to Space Exploration by Radar | journal ...
Wireless (3,237 words) [view diff] no match in snippet view article find links to article
With radio waves distances can be short, such as a few meters for television or as far as thousands or even millions of kilometers for ...
Non-line-of-sight propagation (4,390 words) [view diff] no match in snippet view article find links to article
Radio waves as plane electromagnetic waves: From Maxwell's equations we find that radio waves, as they exist in free space in the far field ...
Ground station (1,015 words) [view diff] no match in snippet view article find links to article
terminal station designed for extraplanetary telecommunication with spacecraft , or reception of radio waves from an astronomical radio source . ...
Crystal radio (10,296 words) [view diff] no match in snippet view article find links to article
It needs no battery or power source and runs on the power received from radio waves by a long wire antenna . It gets its name from its ...
Electric current (4,546 words) [view diff] no match in snippet view article find links to article
Radio waves: Radio waves. When an electric current flows in a suitably shaped conductor at radio frequencies radio waves can be generated. ...
Antenna feed (322 words) [view diff] no match in snippet view article find links to article
antenna structure, or in receiving antennas collect the incoming radio waves, convert them to electric currents and transmit them to the receiver. ...
Monopole antenna (1,473 words) [view diff] no match in snippet view article find links to article
The monopole is a resonant antenna; the rod functions as a resonator for radio waves, with oscillating standing wave s of voltage and ...
Antenna aperture (1,466 words) [view diff] no match in snippet view article find links to article
At any point, a beam of radio waves has an irradiance or power flux density (PFD) which is the amount of radio power passing through a ...
Non-ionizing radiation (2,628 words) [view diff] no match in snippet view article find links to article
Radio waves: Radio waves. Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than ...
Passive radiator (843 words) [view diff] no match in snippet view article find links to article
The purpose of the parasitic elements is to modify the radiation pattern of the radio waves emitted by the driven element, directing them ...
Wi-Fi (6,964 words) [view diff] no match in snippet view article find links to article
to the internet using 2.4 GHz UHF and 5 GHz SHF radio waves. The name is a trademark name, and is a play on the audiophile term Hi-Fi . ...
Quasar (5,049 words) [view diff] no match in snippet view article find links to article
energy , including radio waves and visible light , that appeared to be similar to star s, rather than extended sources similar to galaxies . ...
Surface wave (2,640 words) [view diff] no match in snippet view article find links to article
Ground waves refer to the propagation of radio waves parallel to and adjacent to the surface of the Earth, following the curvature of the ...
Bo Thidé (684 words) [view diff] no match in snippet view article find links to article
Bo Y. Thidé (born in Gothenburg , Sweden) is a Swedish physicist who studies radio waves and other electromagnetic radiation in space, ...
Medium wave (2,363 words) [view diff] no match in snippet view article find links to article
Wavelengths in this band are long enough that radio waves are not blocked by buildings and hills and can propagate beyond the horizon ...
IZMIRAN (227 words) [view diff] no match in snippet view article find links to article
Institute of Earth magnetism, ionosphere and radiowaves propagation named after Nikolay Pushkov of the Russian Academy of Sciences or ...
Electromagnetic radiation and health (2,926 words) [view diff] no match in snippet view article find links to article
Millimeter waves: Recent technology advances in the developments of Millimeter wave scanner s for airport security and ... Radio frequency fields ...
Radio-frequency identification (14,148 words) [view diff] no match in snippet view article find links to article
field, and then act as a passive transponder to emit microwaves or UHF radio waves (i.e., electromagnetic radiation at high frequencies). ...
Driven element (410 words) [view diff] no match in snippet view article find links to article
In a transmitting antenna it is driven or excited by the RF current from the transmitter, and is the source of the radio waves. ...
Horn antenna (3,863 words) [view diff] no match in snippet view article find links to article
A horn antenna or microwave horn is an antenna that consists of a flaring metal waveguide shaped like a horn to direct radio waves in a ...
Image antenna (366 words) [view diff] no match in snippet view article find links to article
an antenna element formed by the radio waves reflecting from a conductive surface called a ground plane , such as the surface of the earth. ...
Speed of light (16,017 words) [view diff] no match in snippet view article find links to article
.409E last Füllekrug | first M | year 2004 | title Probing the Speed of Light with Radio Waves at Extremely Low Frequencies | journal ...
Radio spectrum (2,630 words) [view diff] no match in snippet view article find links to article
The generation of radio waves is strictly regulated by the government in most countries, coordinated by an international standards body ...
Contactless smart card (2,356 words) [view diff] no match in snippet view article find links to article
is any pocket-sized card with embedded integrated circuits that can process and store data, and communicate with a terminal via radio waves . ...
Dead Air (The Bob & Tom Show album) (579 words) [view diff] no match in snippet view article find links to article
Griswold , Dean Metcalf , Steve Allee | Reviews | Last album Radio Waves (2009) | This album Dead Air(2009) | Next album General Static(2010) ...
Radiation pattern (1,920 words) [view diff] no match in snippet view article find links to article
pattern or far-field pattern) refers to the directional (angular) dependence of the strength of the radio waves from the antenna or other source ...
Alexander Stepanovich Popov (2,360 words) [view diff] no match in snippet view article find links to article
In a March 24, 1896 demonstration he used radio waves to transmit a message between different campus buildings in St Petersburg. ...
Nançay radio telescope (506 words) [view diff] no match in snippet view article find links to article
The flat, tilting primary mirror consists of ten panels, each 20 m long and 40 m (131 ft) high; it reflects radio waves towards the ...
Skip distance (271 words) [view diff] no match in snippet view article find links to article
It also represents how far a radio wave has travelled per hop on the Earth's surface, for radio waves such as the short wave (SW) radio ...
Microwave transmission (3,403 words) [view diff] no match in snippet view article find links to article
This allows nearby microwave equipment to use the same frequencies without interfering with each other, as lower frequency radio waves do ...
Lecher lines (2,525 words) [view diff] no match in snippet view article find links to article
When attached to a source of radio frequency power such as a radio transmitter, the radio waves form standing wave s along their length. ...
Apex (radio band) (556 words) [view diff] no match in snippet view article find links to article
The Federal Communications Commission thought initially that very high frequency (VHF ) radio waves would have a small, discrete range, ...
Kennelly–Heaviside layer (477 words) [view diff] no match in snippet view article find links to article
During the daytime the solar wind presses this layer closer to the Earth, thereby limiting how far it can reflect radio waves. ...
Electricity (9,815 words) [view diff] no match in snippet view article find links to article
In addition, electricity permits the creation and reception of electromagnetic radiation such as radio waves . In electricity, charges ...
Dielectric resonator (1,452 words) [view diff] no match in snippet view article find links to article
material, usually ceramic, that is designed to function as a resonator for radio waves , generally in the microwave and millimeter wave bands. ...
List of Science Ninja Team Gatchaman episodes (29,443 words) [view diff] no match in snippet view article find links to article
in Nambu's case, but because Nambu's brain waves keep changing their frequency, they have to destroy the mechanism producing the radio waves. ...
Pulsar (6,060 words) [view diff] no match in snippet view article find links to article
Because of the dispersive nature of the interstellar plasma , lower-frequency radio waves travel through the medium slower than higher- ...
Maximum usable frequency (439 words) [view diff] no match in snippet view article find links to article
In this way radio waves can travel beyond the horizon, around the curve of the Earth. However the refractive index of the ionosphere ...
Wave (6,742 words) [view diff] no match in snippet view article find links to article
microwaves used in microwave ovens and in radar equipment; radio waves broadcast by radio stations; and sound waves generated by radio ...
Offset dish antenna (521 words) [view diff] no match in snippet view article find links to article
In an ordinary front-fed dish antenna, the feed structure and its supports are located in the path of the incoming beam of radio waves, ...
Telecommunication (10,373 words) [view diff] no match in snippet view article find links to article
For example, one radio station can broadcast radio waves into free space at frequencies in the neighborhood of 94.5 MHz (megahertz) while ...
Extremely high frequency (2,290 words) [view diff] no match in snippet view article find links to article
Compared to lower bands, radio waves in this band have high atmospheric attenuation ; they are absorbed by the gases in the atmosphere. ...
William Eccles (550 words) [view diff] no match in snippet view article find links to article
the day and night He carried out experiments into atmospheric disturbances of radio waves and used wave detectors and amplifiers in his work. ...
Reflective array antenna (751 words) [view diff] no match in snippet view article find links to article
antenna s in which multiple driven element s are mounted in front of a flat surface designed to reflect the radio waves in a desired direction. ...
Stub (electronics) (1,195 words) [view diff] no match in snippet view article find links to article
Stubs work by means of standing wave s of radio waves along their length. physical length in relation to the wavelength of the radio waves. ...
Radar altimeter (2,401 words) [view diff] no match in snippet view article find links to article
presently beneath an aircraft or spacecraft by timing how long it takes a beam of radio waves to reflect from the ground and return to the plane. ...
Optical window (383 words) [view diff] no match in snippet view article find links to article
There are also infrared and "radio window s" that transmit some infrared and radio waves . about one centimeter to about eleven-meter waves ...
Klystron (3,559 words) [view diff] no match in snippet view article find links to article
In the klystron, an electron beam interacts with the radio waves as it passes through resonant cavities , metal boxes along the length of ...
Alexanderson alternator (2,311 words) [view diff] no match in snippet view article find links to article
It was one of the first devices capable of generating the continuous radio waves needed for transmission of amplitude modulation (sound ...
Skip zone (440 words) [view diff] no match in snippet view article find links to article
When using medium to high frequency radio telecommunication , there are radio waves which travel both parallel to the ground, and towards ...
Attenuation (2,344 words) [view diff] no match in snippet view article find links to article
telecommunications , attenuation affects the propagation of waves and signals in electrical circuits, in optical fibers, and in air (radio waves). ...
William J. Thaler (556 words) [view diff] no match in snippet view article find links to article
ballistic missile s using high frequency radio waves bounced between the Earth's surface and the ionosphere , part of the upper atmosphere. ...
Dielectric resonator antenna (584 words) [view diff] no match in snippet view article find links to article
Radio waves are introduced into the inside of the resonator material from the transmitter circuit and bounce back and forth between the ...
Karl Guthe Jansky (1,948 words) [view diff] no match in snippet view article find links to article
singlehandedly built a radio telescope in his Illinois back yard in 1937 and did the first systematic survey of astronomical radio waves. ...
Super high frequency (1,047 words) [view diff] no match in snippet view article find links to article
These frequencies fall within the microwave band, so radio waves with these frequencies are called microwaves. The small wavelength of ...
Wireless microphone (4,455 words) [view diff] no match in snippet view article find links to article
They can transmit, for example, in radio waves using UHF or VHF frequencies, FM , AM , or various digital modulation schemes. ...
Line-of-sight propagation (1,843 words) [view diff] no match in snippet view article find links to article
The usual effect of the declining pressure of the atmosphere with height is to bend radio waves down toward the surface of the Earth, ...
Last mile (4,058 words) [view diff] no match in snippet view article find links to article
Radio waves: Radio frequencies (RF), from low frequencies through the microwave region, have wavelengths much longer than visible light. ...
Corner reflector (1,121 words) [view diff] no match in snippet view article find links to article
Radar corner reflectors made of metal are used to reflect radio waves from radar sets. Optical corner reflectors, called corner cubes, ...
Battle of the Beams (4,232 words) [view diff] no match in snippet view article find links to article
the Air Ministry fought back with a variety of their own increasingly effective means, involving jamming and distortion of the radio waves. ...
Transverse mode (1,547 words) [view diff] no match in snippet view article find links to article
Transverse modes occur in radio waves and microwave s confined to a waveguide , and also in light waves in an optical fiber and in a ...
Optical pulsar (200 words) [view diff] no match in snippet view article find links to article
the Crab pulsar was detected by stroboscopic techniques in 1969, shortly after its discovery in radio waves, at the Steward Observatory . ...
Batteryless radio (523 words) [view diff] no match in snippet view article find links to article
(mains radio); it can also refer to units which do not require a power source at all, except for the power that they receive from radio waves. ...
Radiodensity (535 words) [view diff] no match in snippet view article find links to article
The radio waves portion of the electromagnetic spectrum represents much lower energy/frequency photons than visible light. density as radio ...
List of plasma physicists (615 words) [view diff] no match in snippet view article find links to article
C. A. Cattell - Pioneering observations of electrostatic solitary wave s and the discovery of large amplitude whistler (radio) waves in ...
Ionospheric heater (582 words) [view diff] no match in snippet view article find links to article
transmitters operate in the high frequency (HF) range (3-30 MHz) at which radio waves are reflected from the ionosphere back to the ground. ...
Helical antenna (1,296 words) [view diff] no match in snippet view article find links to article
It radiates circularly polarised radio waves. Normal-mode helical : Radiating at 90 degrees from the axis of the helix this design is ...
Amateur radio call signs of Canada (2,476 words) [view diff] no match in snippet view article find links to article
It assigns call signs, issues amateur radio licences, conducts exams, allots frequency spectrum, and monitors the radio waves. ...
Light (5,959 words) [view diff] no match in snippet view article find links to article
Soon after, Heinrich Hertz confirmed Maxwell's theory experimentally by generating and detecting radio waves in the laboratory, and ...
Landline (1,667 words) [view diff] no match in snippet view article find links to article
uses a metal wire telephone line for transmission as distinguished from a mobile cellular line , which uses radio waves for transmission. ...
Variable Specific Impulse Magnetoplasma Rocket (4,909 words) [view diff] no match in snippet view article find links to article
It uses radio waves to ionize and heat a propellant , and magnetic field s to accelerate the resulting plasma to generate thrust . ...
Amplitude modulation (4,362 words) [view diff] no match in snippet view article find links to article
synonymous with the development between 1900 and 1920 of "radiotelephone " transmission, that is, the effort to send sound (audio) by radio waves. ...
Cassini–Huygens (10,527 words) [view diff] no match in snippet view article find links to article
and measures radio signals coming from Saturn, including the radio waves given off by the interaction of the solar wind with Saturn and Titan. ...
WAVZ (487 words) [view diff] no match in snippet view article find links to article
and waves in your hair,and people wave their hands when they're going anywhere,but the greatest waves there can be are the radio waves on WAVZ" ...
Rectenna (794 words) [view diff] no match in snippet view article find links to article
They are used in wireless power transmission systems that transmit power by radio waves . A simple rectenna element consists of a dipole ...
S band (708 words) [view diff] no match in snippet view article find links to article
It is defined by an IEEE standard for radio waves with frequencies that range from 2 to 4 GHz , crossing the conventional boundary ...
Electromagnetic shielding (1,786 words) [view diff] no match in snippet view article find links to article
The shielding can reduce the coupling of radio waves , electromagnetic fields and electrostatic field s. A conductive enclosure used to ...
Motion detector (1,103 words) [view diff] no match in snippet view article find links to article
Tomographic motion detection systems can cover much larger areas because the radio waves are at frequencies which penetrate most walls and ...
Interplanetary scintillation (1,286 words) [view diff] no match in snippet view article find links to article
Interplanetary scintillation is the result of radio waves traveling through fluctuations in the density of the electron and proton s that ...
Curtain array (1,501 words) [view diff] no match in snippet view article find links to article
They are used for long-distance skywave (or skip) transmission; in which a beam of radio waves is transmitted at a shallow angle into the ...
Antenna gain (1,681 words) [view diff] no match in snippet view article find links to article
As a receiving antenna, the figure describes how well the antenna converts radio waves arriving from a specified direction into electrical ...
Phase modulation (445 words) [view diff] no match in snippet view article find links to article
Unlike frequency modulation (FM), phase modulation is not widely used for transmitting radio waves. This is because PM requires more ...
Active electronically scanned array (3,742 words) [view diff] no match in snippet view article find links to article
AESA radars aim their "beam" by emitting separate radio waves from each module that interfere constructively at certain angles in front ...
Timing advance (689 words) [view diff] no match in snippet view article find links to article
Since the users are at various distances from the base station and radio waves travel at the finite speed of light , the precise arrival- ...
Amateur radio (6,457 words) [view diff] no match in snippet view article find links to article
because clandestine uses of radio can be made, and, because radio waves propagate beyond national boundaries, radio is an international matter. ...
Beam waveguide antenna (780 words) [view diff] no match in snippet view article find links to article
With a conventional "front fed" parabolic antenna, the antenna feed , the small antenna that transmits or receives the radio waves ...
Laser jammer (509 words) [view diff] no match in snippet view article find links to article
Because these jammers focus on blocking light emitted from laser guns, and not radio waves from radar guns, US federal laws prohibiting the ...
Outline of radio (367 words) [view diff] no match in snippet view article find links to article
When radio waves pass an electrical conductor, the oscillating fields induce an alternating current in the conductor. This can be detected ...
Clipped tag (1,123 words) [view diff] no match in snippet view article find links to article
technology in which information stored in semiconductor chips contained in RFID tags is communicated by means of radio waves to RFID readers. ...
GRB 970228 (3,131 words) [view diff] no match in snippet view article find links to article
Since 1993, physicists had predicted GRBs to be followed by a lower-energy afterglow (in wavelengths such as radio waves , x-rays , and ...
Radome (1,026 words) [view diff] no match in snippet view article find links to article
In other words, the radome is transparent to radar or radio waves. Radomes protect the antenna surfaces from weather or conceal antenna ...
Dark nebula (390 words) [view diff] no match in snippet view article find links to article
Like other interstellar dust or material, things it obscures are only visible using radio waves in radio astronomy or infrared in ...
Satellaview (4,637 words) [view diff] no match in snippet view article find links to article
during which scrambled Satellaview-related data was streamed via radio waves to be unscrambled by St. GIGA's. "BS digital hi-vision TV" | ...
Subspace (Star Trek) (267 words) [view diff] no match in snippet view article find links to article
radio waves), signals sent from a great distance can be expected to reach their destination at a predictable time and with little relative ...
Merle Tuve (1,092 words) [view diff] no match in snippet view article find links to article
He was a pioneer in the use of pulsed radio waves whose discoveries opened the way to the development of radar and nuclear energy ...
Lakihegy Tower (507 words) [view diff] no match in snippet view article find links to article
Developed in the U.S.A., the diamond shaped mast was specially designed to radiate radio waves in such a way that reduce fading . ...
Ground-penetrating radar (1,980 words) [view diff] no match in snippet view article find links to article
GPR uses high-frequency (usually polarized) radio waves and transmits into the ground. When the wave hits a buried object or a boundary ...
Traveling-wave tube (2,449 words) [view diff] no match in snippet view article find links to article
Helix TWT - in which the radio waves interact with the electron beam while traveling down a wire helix which surrounds the beam. ...
Frequency (2,525 words) [view diff] no match in snippet view article find links to article
All of these waves, from the lowest-frequency radio waves to the highest-frequency gamma rays, are fundamentally the same, and they are all ...
Cassegrain antenna (1,651 words) [view diff] no match in snippet view article find links to article
The beam of radio waves from the feed illuminates the secondary reflector, which reflects it back to the main reflector dish, which ...
Tyndall effect (955 words) [view diff] no match in snippet view article find links to article
An analogy to this wavelength dependency is that longwave electromagnetic waves such as radio waves are able to pass through the walls of ...
Tor Hagfors (982 words) [view diff] no match in snippet view article find links to article
Norwegian scientist , radio astronomer , radar expert and a pioneer in the studies of the interactions between electromagnetic waves and plasma . ...
Reber Radio Telescope (484 words) [view diff] no match in snippet view article find links to article
yard in Illinois in 1937, implementing an earlier proposal of Karl Jansky , the discoverer (1931) of radio waves emanating from the Milky Way. ...
Amateur radio call signs of the United Kingdom (1,099 words) [view diff] no match in snippet view article find links to article
It assigns call signs, issues amateur radio licences, allots frequency spectrum, and monitors the radio waves. conducting amateur radio ...
Feed horn (436 words) [view diff] no match in snippet view article find links to article
In receiving antennas, incoming radio waves are gathered and focused by the antenna's reflector on the feed horn, which converts them to a ...
Low-noise block downconverter (3,739 words) [view diff] no match in snippet view article find links to article
(or LNB) is the receiving device mounted on satellite dish es used for satellite TV reception, which collects the radio waves from the dish. ...
Blueshift (789 words) [view diff] no match in snippet view article find links to article
x-rays and radio waves) are shifted toward shorter wavelengths, as well as to shifts in the de Broglie wavelength of particles. ...
Random wire antenna (731 words) [view diff] no match in snippet view article find links to article
the ground, whose length does not bear a relation to the wavelength of the radio waves used, but is typically chosen more for convenience. ...
Earth-Moon-Earth communication (1,711 words) [view diff] no match in snippet view article find links to article
propagation of radio waves from an Earth -based transmitter directed via reflection from the surface of the Moon back to an Earth-based receiver. ...
Terrain mask (313 words) [view diff] no match in snippet view article find links to article
of avoiding active radar by positioning the aircraft so there is natural earth hiding it from the radio waves sent from the radar system. ...
Side lobe (956 words) [view diff] no match in snippet view article find links to article
In a directional antenna in which the objective is to emit the radio waves in one direction, the lobe in that direction has a larger ...
Martian soil (3,770 words) [view diff] no match in snippet view article find links to article
This approach enables agreement across Martian remote sensing methods that span the electromagnetic spectrum from gamma to radio waves ...
Bob Fass (6,065 words) [view diff] no match in snippet view article find links to article
He then was given the midnight to dawn time block to use as he wished. Jay Sand , in The Radio Waves Unnameable , writes "He had the same ...
Auroral chorus (348 words) [view diff] no match in snippet view article find links to article
The electromagnetic waves are a type of Natural radio waves , vibrations of electric and magnetic energy occurring at the same frequency ...
3MMM (3,980 words) [view diff] no match in snippet view article find links to article
Brady, Nicole, "Radio Waves: Melbourne show makes a splash in harbour city", The Age Green Guide, page 6, 20 November 2003 "Radio Waves", ...
Optical imaging (895 words) [view diff] no match in snippet view article find links to article
Because light is an electromagnetic wave, similar phenomena occur in X-rays, microwaves, radio waves. Chemical imaging or molecular ...
T Tauri (881 words) [view diff] no match in snippet view article find links to article
three stars, only one of which is visible at optical wavelengths; the other two shine in the infrared and one of them also emits radio waves. ...
Tactical Data Link (829 words) [view diff] no match in snippet view article find links to article
A Tactical Data Link (TDL) uses a data link standard in order to provide communication via radio waves or cable used by the U.S. armed ...
Angie Aparo (634 words) [view diff] no match in snippet view article find links to article
His single, "Spaceship," hit the radio waves in 2000, and The American also includes his original version of the single "Cry ", made ...
Radar gun (2,468 words) [view diff] no match in snippet view article find links to article
where c is the speed of light , f is the emitted frequency of the radio waves and Δ f is the difference in frequency between the radio ...
J. A. Ratcliffe (378 words) [view diff] no match in snippet view article find links to article
In 1953 Ratcliffe was invited to deliver the Royal Institution Christmas Lecture on The Uses of Radio Waves. He served as President of the ...
Henri Abraham (964 words) [view diff] no match in snippet view article find links to article
He performed some of the first measurements of the propagation velocity of radio waves, helped develop France's first triode vacuum tube ...
Time of arrival (507 words) [view diff] no match in snippet view article find links to article
publications the fact is ignored that this relation is well defined for vacuum, but is different for all other material when radio waves pass through. ...
The European Radio Astronomy Club (494 words) [view diff] no match in snippet view article find links to article
The European Radio Astronomy club (ERAC) is Europe 's only group coordinating the work of radio astronomers to jointly use radio waves to ...
Atacama Pathfinder Experiment (1,617 words) [view diff] no match in snippet view article find links to article
APEX is designed to work at sub-millimetre wavelengths, in the 0.2 to 1.5 mm range — between infrared light and radio waves, and to find ...
Project Ozma (382 words) [view diff] no match in snippet view article find links to article
The object of the experiment was to search for signs of life in distant solar systems through interstellar radio waves. with Oz by radio to ...
Crab Pulsar (2,088 words) [view diff] no match in snippet view article find links to article
star generates synchrotron emission , which produces the bulk of the emission from the nebula, seen from radio waves through to gamma rays . ...
Luneburg lens (1,833 words) [view diff] no match in snippet view article find links to article
They can be made for use with electromagnetic radiation from visible light to radio waves . For certain index profiles, the lens will form ...
Yuri Orlov (805 words) [view diff] no match in snippet view article find links to article
Upon his return to Moscow in 1973 he worked at the Institute of Terrestrial Magnetism and Propagation of Radio Waves in suburban Troitsk ...
Amateur radio call-signs of India (910 words) [view diff] no match in snippet view article find links to article
The WPC assigns call signs, issues amateur radio licences, conducts exams, allots frequency spectrum, and monitors the radio waves. ...
Astronomy (10,187 words) [view diff] no match in snippet view article find links to article
Hence, it is relatively easier to measure both the amplitude and phase of radio waves, whereas this is not as easily done at shorter ...
Born approximation (635 words) [view diff] no match in snippet view article find links to article
For example, the radar scattering of radio waves by a light styrofoam column can be approximated by assuming that each part of the ...
Lawrence A. Hyland (471 words) [view diff] no match in snippet view article find links to article
While at NRL he first demonstrated the reflection of radio waves from aircraft, and also made other contributions to the development of ...