- radiation at ultrahigh frequencies
- Макаров: ультравысокочастотное излучение
Универсальный англо-русский словарь. Академик.ру. 2011.
radiation at ultrahigh frequencies
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ultrahigh frequency — Frequencies of electromagnetic radiation between 300 and 3000 MHz, or of wavelengths between 100 and 10 cm. These frequencies are mainly used by military for air to air and air to ground voice communications on a line of sight basis. In some… … Aviation dictionary
radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… … Universalium
Electromagnetic radiation — Electromagnetism Electricity · … Wikipedia
radio — /ray dee oh /, n., pl. radios, adj., v., radioed, radioing. n. 1. wireless telegraphy or telephony: speeches broadcast by radio. 2. an apparatus for receiving or transmitting radio broadcasts. 3. a message transmitted by radio. adj. 4. pertaining … Universalium
transistor — /tran zis teuhr/, n. 1. Electronics. a semiconductor device that amplifies, oscillates, or switches the flow of current between two terminals by varying the current or voltage between one of the terminals and a third: although much smaller in… … Universalium
J-antenna — A half wave antenna, end fed by a parallel wire quarter wave section having the configuration of a “J.” The antenna has an omnidirectional radiation pattern in the horizontal plane. This antenna is used primarily at very high and ultrahigh… … Aviation dictionary
traveling-wave tube — noun : an electron tube used for the generation of microwave frequency radiation or for amplification at ultrahigh frequencies whose operation depends on the interaction of a beam of electrons with an electromagnetic wave * * * /trav euh ling… … Useful english dictionary
Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… … Universalium
spectroscopy — spectroscopist /spek tros keuh pist/, n. /spek tros keuh pee, spek treuh skoh pee/, n. the science that deals with the use of the spectroscope and with spectrum analysis. [1865 70; SPECTRO + SCOPY] * * * Branch of analysis devoted to identifying… … Universalium
radar — /ray dahr/, n. 1. Electronics. a device for determining the presence and location of an object by measuring the time for the echo of a radio wave to return from it and the direction from which it returns. 2. a means or sense of awareness or… … Universalium
telecommunications media — Introduction equipment and systems metal wire, terrestrial and satellite radio, and optical fibre employed in the transmission of electromagnetic signals. Transmission media and the problem of signal degradation Every… … Universalium
