in terms of wavelength the r.f. range extends from (...) to (...)

См. также в других словарях:

• Smith chart — The Smith Chart, invented by Phillip H. Smith (1905 1987), [Smith, P. H.; Transmission Line Calculator; Electronics, Vol. 12, No. 1, pp 29 31, January 1939] [Smith, P. H.; An Improved Transmission Line Calculator; Electronics, Vol. 17, No. 1, p… …   Wikipedia

• glacier — glaciered, adj. /glay sheuhr/, n. an extended mass of ice formed from snow falling and accumulating over the years and moving very slowly, either descending from high mountains, as in valley glaciers, or moving outward from centers of… …   Universalium

• musical sound — Introduction       any tone with characteristics such as controlled pitch and timbre. The sounds are produced by instruments in which the periodic vibrations can be controlled by the performer.       That some sounds are intrinsically musical,… …   Universalium

• earth — /errth/, n. 1. (often cap.) the planet third in order from the sun, having an equatorial diameter of 7926 mi. (12,755 km) and a polar diameter of 7900 mi. (12,714 km), a mean distance from the sun of 92.9 million mi. (149.6 million km), and a… …   Universalium

• Sun — This article is about the star. For other uses, see Sun (disambiguation). The Sun …   Wikipedia

• Piano — Pianoforte redirects here. For earlier versions of the instrument, see Fortepiano. For other uses of Piano, see Piano (disambiguation). Piano Bösendorfer grand piano Keyboard instrument …   Wikipedia

• Electromagnetic spectrum — The electromagnetic (EM) spectrum is the range of all possible electromagnetic radiation frequencies. [cite web|url=http://imagine.gsfc.nasa.gov/docs/dict ei.html#em spectrum|title=Imagine the Universe! Dictionary] The electromagnetic spectrum… …   Wikipedia

• Near East — The original Near East; that is, the Ottoman Empire at the beginning of the eastern question. The term is only meaningful as a contrast to Far East. Much of the original extent is south; moreover, countries such as Greece disavow any association… …   Wikipedia

• Potrillo volcanic field — The Potrillo Volcanic Field is a monogenetic volcanic field located on the Rio Grande Rift in New Mexico, USA and Chihuahua, Mexico. It lies convert|35|km|mi|0 west of El Paso, Texas. Rio Grande Rift *Rifting began in Late Oligocene cite book |… …   Wikipedia

• Rings of Saturn — The full set of main rings, imaged as Saturn eclipsed the Sun from the vantage of the Cassini spacecraft on 15 September 2006 (brightness is exaggerated). The pale blue dot at the 10 o clock position, outside the main rings and just inside the G… …   Wikipedia

• Frequency grid — The most common frequency grid is that used for channel spacing in Dense Wavelength Division Multiplexing (DWDM) for Fiber optic communication at wavelengths around 1550nm and defined by ITU T G.694.1 (2002). The grid is defined relative to… …   Wikipedia