high frequency radiation
21electromagnetic radiation — Physics. radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x rays, and gamma rays. [1950 55] * * * Energy propagated through free space or through a material medium in the form of… …
22Electromagnetic radiation — Electromagnetism Electricity · …
23Mobile phone radiation and health — A man speaking on a mobile telephone The effect of mobile phone radiation on human health is the subject of recent interest and study, as a result of the enormous increase in mobile phone usage throughout the world (as of June 2009 …
24Multipole radiation — is a theoretical framework for the description of electromagnetic or gravitational radiation from time dependent distributions of distant sources. These tools are applied to physical phenomena which occur at a variety of length scales from… …
25Terahertz radiation — Electromagnetic waves sent at terahertz frequencies, known as terahertz radiation, submillimeter radiation, terahertz waves, terahertz light, T rays, T light, T lux and THz, are in the region of the electromagnetic spectrum between 300 gigahertz… …
26Van Allen radiation belt — Van Allen radiation belts The Van Allen radiation belt is a torus of energetic charged particles (plasma) around Earth, which is held in place by Earth s magnetic field. It is believed that most of the particles that form the belts come from… …
27Radio-frequency identification — (RFID) is a technology that uses radio waves to transfer data from an electronic tag, called RFID tag or label, attached to an object, through a reader for the purpose of identifying and tracking the object. Some RFID tags can be read from… …
28ionizing radiation injury — also called radiation sickness tissue destruction or changes caused by deeply penetrating electromagnetic waves of high frequency or subatomic particles (subatomic particle) that form positively and negatively charged particles in the… …
29Orders of magnitude (radiation) — Recognized effects of higher acute radiation doses are described in more detail in the article on radiation poisoning. Although the International System of Units (SI) defines the sievert (Sv) as the unit of radiation dose equivalent, chronic… …
30Orders of magnitude (frequency) — To help compare different orders of magnitude, the following list describes various frequencies, which is measured in Hertz. Factor (Hz) Multiple Value Item 10−18 1 attohertz (aHz) 2.29 aHz The Hubble Constant (once in 13.8 billion years) 10−15 1 …
