terahertz radiation definition
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terahertz (THz) The terahertz, abbreviated THz, is a unit of electromagnetic (EM) wave frequency equal to one trillion hertz (10 12 Hz).The terahertz is used as an indicator of the frequency of infrared (IR), visible, and ultraviolet (UV) radiation.Download this Pocket Guide to Network Management and Monitoring.he terahertz is not commonly used in computer and wireless technology, although it is possible that a microprocessor with a clock speed of 1 THz might someday be developed.
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Hertz Electromagnetic radiation is often described by its frequency—the number of oscillations of the perpendicular electric and magnetic fields per second—expressed in hertz. Radio frequency radiation is usually measured in kilohertz (kHz), megahertz (MHz), or gigahertz (GHz).
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bremsstrahlung The major energy loss of high-energy (relativistic) electrons (energy greater than about 10 MeV, depending somewhat upon material) occurs from the emission of bremsstrahlung, and this is the major source of gamma rays in a high-energy cosmic-ray shower. See Electromagnetic radiation.
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- Electromagnetic radiation is energy that is propagated through free space or through a material medium in the form of electromagnetic waves, such as radio waves, visible light, and gamma rays.The term also refers to the emission and transmission of such radiant energy.lectromagnetic radiation is energy that is propagated through free space or through a material medium in the form of electromagnetic waves, such as radio waves, visible light, and gamma rays.
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- 1 For the amount of radiation being given off by a radioactive material: the conventional unit is curie (Ci) and the SI unit becquerel (Bq).  For radiation absorbed by a person: the conventional unit is rad and the SI unit gray (Gy).
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What is GHz? 10 most extreme places on Earth. Gigahertz, generally abbreviated GHz, refers to frequencies in the billions of cycles per second range. Giga is the standard multiplier for 1 billion, and Hertz is the standard unit for measuring frequencies, expressed as cycles or occurrences per second. One GHz is equivalent to 1,000 megahertz (MHz).
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radiation (rā'dēā`shən), term applied to the emission and transmission of energy through space or through a material medium and also to the radiated energy itself. In its widest sense the term includes electromagnetic, acoustic, and particle radiation, and all forms of ionizing radiation.
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Thermal radiation Thermal radiation is the emission of electromagnetic waves from all matter that has a temperature greater than absolute zero. It represents a conversion of thermal energy into electromagnetic energy.Thermal energy consists of the kinetic energy of random movements of atoms and molecules in matter.unlight is part of thermal radiation generated by the hot plasma of the Sun. The Earth also emits thermal radiation, but at a much lower intensity and different spectral distribution (infrared rather than visible) because it is cooler.
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Radiation therapy Radiation therapy or radiotherapy, often abbreviated RT, RTx, or XRT, is therapy using ionizing radiation, generally as part of cancer treatment to control or kill malignant cells. Radiation therapy may be curative in a number of types of cancer if they are localized to one area of the body.
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Radiation In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or through a material medium. This includes: 1  electro-magnetic radiation (also known as continuum radiation) γ such as radio waves, visible light, and x-rays.
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electromagnetic radiation infrared radiation. the portion of the spectrum of electromagnetic radiation of wavelengths ranging between 0.75 and 1000 μm. See also infrared. radiation injury. is caused by exposure to radioactive material. High doses cause intense diarrhea and dehydration and extensive skin necrosis.
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- Share to: 1  Electromagnetic Radiation Definition and Facts Electromagnetic radiation (EMR) is energy emitted and absorbed by charged particles that exhibits wave-like behavior as it travels through space. 2  The Periodic Table of Elements Life is sustained by a number of chemical elements.
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Terahertz radiation Terahertz radiation falls in between infrared radiation and microwave radiation in the electromagnetic spectrum, and it shares some properties with each of these.Like infrared and microwave radiation, terahertz radiation travels in a line of sight and is non-ionizing. Unlike X-rays, terahertz radiation is not ionizing radiation and its low photon energies in general do not damage tissues and DNA. 2  Some frequencies of terahertz radiation can penetrate several millimeters of tissue with low water content (e.g., fatty tissue) and reflect back.
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The Truth About Terahertz The government review in 2007 loosely defined a compact terahertz source as having an average output power in the 1-mW to 1-W range, operating in the 300-GHz to 3-THz frequency band, and being more or less “portable.” (We chose average power rather than peak power because, ultimately, it’s the average power that counts in nearly all of the envisioned applications.)
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The Truth About Terahertz TERAHERTZ WALL: The power needed to send data at terahertz frequencies would be impractically high in many cases. For a line-of-sight terrestrial communication link using fixed-gain antennas, shown here, transmitting at distances of less than 100 meters is the only way to avoid the “terahertz wall.”
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- SecurActive Performance Vision. The terahertz, abbreviated THz, is a unit of electromagnetic (EM) wave frequency equal to one trillion hertz (10 12 Hz). The terahertz is used as an indicator of the frequency of infrared (IR), visible, and ultraviolet (UV) radiation.Download this Pocket Guide to Network Management and Monitoring.he terahertz is not commonly used in computer and wireless technology, although it is possible that a microprocessor with a clock speed of 1 THz might someday be developed.
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Radiofrequency (RF) Radiation Radiofrequency (RF) Radiation. (Includes RF from broadcast antennas, portable radio systems, microwave antennas, satellite, and radar) Kelly Classic, Certified Medical Physicist. Electromagnetic radiation consists of waves of electric and magnetic energy moving together (that is, radiating) through space at the speed of light.
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Microwave oven radiation as defined by physics terminology is the electromagnetic waves emitted by the atoms and molecules of a radioactive substance as a result of nuclear decay radiation causes ionization which is what occurs when a neutral atom gains or loses electrons
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radio frequency : any of the electromagnetic wave frequencies that lie in the range extending from below 3 kilohertz to about 300 gigahertz and that include the frequencies used for communications signals (as for radio and television broadcasting and cell-phone and satellite transmissions) or radar signals.
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- electromagnetic radiation: Microwaves. 1  in classical physics, the flow of energy at the universal speed of light through free space or through a material medium in the form of the electric and magnetic fields that make up electromagnetic waves such as radio waves, visible light, and gamma rays.
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Far Infrared Light Can Be Used For Anti-terror Devices, Faster Wireless Near-infrared radiation and some visible light now are used for fiber optic phone and data lines. But terahertz or far-infrared radiation -- on the spectrum between microwaves and mid-infrared radiation -- is not now used for communication. Terahertz is a new region of the spectrum for communications because the rest of the spectrum is crowded with communication and broadcasting signals, says Nahata.
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Glossary of physics Share to: 1  Electromagnetic Radiation Definition and Facts Electromagnetic radiation (EMR) is energy emitted and absorbed by charged particles that exhibits wave-like behavior as it travels through space. 2  Electromagnetic radiation is…. 3  The Periodic Table of Elements Life is sustained by a number of chemical elements.
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Marconi Gets Mars' Message Occupational Safety and Health Administration. Radiofrequency and Microwave Radiation. Radiofrequency (RF) and microwave (MW) radiation are electromagnetic radiation in the frequency ranges 3 kilohertz (kHz) - 300 Megahertz (MHz), and 300 MHz - 300 gigahertz (GHz), respectively.
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Difference Between Light and Radio Waves Terahertz imaging – a potential replacement for X-rays in some medical applications, ultrafast molecular dynamics, condensed-matter physics, terahertz time-domain spectroscopy, terahertz computing/communications, sub-mm remote sensing, amateur radio. German radio stations streaming live on the internet:
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What is Electromagnetic Radiation? Top 10 facts about the world. Electromagnetic radiation is a term used to describe a stream of energy-bearing particles that travels outward from an electromagnetic source. The energy in these streams can vary extensively in power, and is measured by the electromagnetic spectrum.