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searching for Radio Waves (radio station) 191 found (1263 total)

alternate case: radio Waves (radio station)

Radio wave (900 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 (7,222 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 (10,016 words) [view diff] no match in snippet view article find links to article
frequency and decreasing wavelength: radio waves , microwave s, infrared radiation , visible light , ultraviolet radiation , X-ray s and gamma ray s. ...
Radio astronomy (3,177 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 (7,651 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 ...
Jet Black & Jealous (513 words) [view diff] no match in snippet view article find links to article
The album's third and fourth singles, "Radio Waves" and "Guinevere," peaked at 35 and 45, respectively. Critical reception: Andrew Leahey of ...
Radio propagation (4,012 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 ...
High frequency (1,803 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. (3,494 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 (1,927 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 (1,770 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 (3,922 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 ...
Extremely low frequency (3,418 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 ...
IZMIRAN (228 words) [view diff] no match in snippet view article find links to article
Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation named after Nikolay Pushkov of the Russian Academy of Sciences or ...
Ionosphere (4,771 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) (13,306 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 (18,909 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 (10,895 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 (943 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 ...
Radar (10,647 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 ...
Roger Waters (9,887 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. ...
Transmitter (2,051 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 (2,753 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 ...
Shortwave radio (5,747 words) [view diff] no match in snippet view article find links to article
Shortwave radio is used for long distance communication by means of skywave or skip propagation , in which the radio waves are reflected ...
Transverse wave (910 words) [view diff] no match in snippet view article find links to article
With regard to transverse waves in matter, the displacement of the medium is perpendicular to the direction of propagation of the wave. ...
Electromagnetic spectrum (5,221 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 (1,500 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 ...
Parabolic antenna (4,658 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. ...
History of radar (21,444 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 ...
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 ...
Communication with submarines (1,420 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 (8,950 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 ...
Timeline of radio (4,569 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 ...
Radiation (6,221 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 ...
Broadcasting (2,576 words) [view diff] no match in snippet view article find links to article
associated with radio and television , though in practice radio and television transmissions take place using both wires and radio waves. ...
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 (1,348 words) [view diff] no match in snippet view article find links to article
Radionics is a alternative medicine that claims disease can be diagnosed and treated with a kind of energy similar to radio waves. ...
Fiorella Terenzi (3,239 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 (2,410 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 ...
Receiver (radio) (2,864 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 ...
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 ...
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 ...
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 ...
Magnetic resonance imaging of the brain (618 words) [view diff] no match in snippet view article find links to article
Magnetic resonance imaging (MRI) of the nervous system uses magnetic fields and radio waves to produce high quality two- or three- ...
Intentional radiator (52 words) [view diff] no match in snippet view article find links to article
An intentional radiator is any device that is deliberately designed to produce radio waves . Radio transmitters of all kinds, including 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 (4,182 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 ...
Electromagnetic radiation and health (2,985 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 ...
Invention of radio (15,444 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 ...
Crystal radio (10,227 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 ...
Diffraction (5,610 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 ...
Non-line-of-sight propagation (4,339 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 ...
Wireless (3,301 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 ...
Light (6,020 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 ...
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 . ...
Electric current (4,585 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. ...
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 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. ...
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 (2,634 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 ...
Wave (7,239 words) [view diff] no match in snippet view article find links to article
...Sun; [[microwaves]] used in microwave ovens and in [[radar]] equipment; [[radio waves]] broadcast by radio stations; and [[sound waves]] generated by radio recei ...and thus wavelengths), giving rise to various types of radiation such as [[radio waves]], [[microwaves]], [[infrared]], visible light, [[ultraviolet]] and [[X-ray
Wi-Fi (7,421 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 (5,157 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 (2,653 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 ...
Medium wave (2,367 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 ...
Radio-frequency identification (11,923 words) [view diff] no match in snippet view article find links to article
Some types collect energy from the interrogating radio waves and act as a passive transponder. Other types have a local power source such ...
Speed of light (16,092 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 ...
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, ...
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 (3,827 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. ...
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 ...
History of radio (10,305 words) [view diff] no match in snippet view article find links to article
(radio waves) through the air, proving Maxwell's electromagnetic theory Early on after their discovery, radio waves were referred to as " ...
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 . ...
Passive radiator (844 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 ...
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) ...
Kennelly–Heaviside layer (684 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. ...
Klystron (3,520 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 [[cavity resonator|resonant cavities]], metal boxes al ...ack into the input cavity to make an [[electronic oscillator]] to generate radio waves. The [[gain]] of klystrons can be high, 60 dB (one million) or more, with
Radiation pattern (1,919 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 ...
Nançay radio telescope (574 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 ...
Alexander Stepanovich Popov (2,363 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. ...
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 ...
Apex (radio band) (561 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, ...
Microwave transmission (3,587 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. ...
Electricity (9,692 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 ...
Near field communication (6,762 words) [view diff] no match in snippet view article find links to article
Magnetic NFC has a useful property of being able to penetrate conductors that would reflect radio waves. Many mobile phones now use ...
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 (29,445 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 (6,071 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 ...
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, ...
Extremely high frequency (2,317 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. ...
Telecommunication (7,739 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 ...
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. ...
Arnold Wilkins (663 words) [view diff] no match in snippet view article find links to article
It was Arnold Wilkins who suggested to his boss, Robert Watson Watt, that reflected radio waves might be used to detect aircraft, and his ...
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) (1,206 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. ...
James Clerk Maxwell (8,907 words) [view diff] no match in snippet view article find links to article
of electric and magnetic phenomena The unification of light and electrical phenomena led to the prediction of the existence of radio waves . ...
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 ...
Alexanderson alternator (2,312 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 (1,942 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 ...
Line-of-sight propagation (1,841 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, ...
Wireless microphone (4,327 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. ...
Last mile (4,062 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 (4,221 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 (1,306 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. ...
Landline (3,042 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 (5,621 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. ...
WAVZ (488 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" ...
Cassini–Huygens (10,574 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. ...
Rectenna (846 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 (719 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 ...
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 ...
Phase modulation (461 words) [view diff] no match in snippet view article find links to article
Phase modulation is widely used for transmitting radio waves and is an integral part of many digital transmission coding schemes that ...
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- ...
Antenna gain (1,687 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 ...
Active electronically scanned array (3,856 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 ...
Amateur radio (6,487 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 (510 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 (371 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 (3,244 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 (1,027 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 and conceal antenna ...
Dark nebula (431 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 (4,666 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" | ...
Ground-penetrating radar (1,984 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 ...
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 . ...
Indoor positioning system (3,382 words) [view diff] no match in snippet view article find links to article
An indoor positioning system (IPS) is a solution to locate objects or people inside a building using radio waves, acoustic signals, or other ...
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. ...
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 ...
Frequency (2,587 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 ...
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 . ...
Amateur radio call signs of the United Kingdom (1,100 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. ...
Reber Radio Telescope (485 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. ...
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. ...
Earth-Moon-Earth communication (1,716 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. ...
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. ...
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 (954 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 (4,008 words) [view diff] no match in snippet view article find links to article
...sensing methods that span the electromagnetic spectrum from [[gamma]] to [[radio waves]]. ‘‘Soil’’ refers to all other, typically unconsolidated, material
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 ...
Tactical Data Link (833 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 ...
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 ...
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 (3,977 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", ...
T Tauri (897 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. ...
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 (2,505 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 ...
Atacama Pathfinder Experiment (1,605 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 ...
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. ...
Crab Pulsar (2,089 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 . ...
The European Radio Astronomy Club (486 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 ...
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 ...
Astronomy (10,261 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 ...
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 ...