- focal feed
- облучатель , находящийся в фокусе
English-Russian dictionary of telecommunications. 2015.
focal feed
Смотреть что такое "focal feed" в других словарях:
FOCAL-69 — was the landmark version of the FOCAL programming language, more widely publicized than the original version of the language created in 1968. FOCAL 69, created by Richard Merrill is important because: * It was the basis for all later derivatives… … Wikipedia
Focal cloud — A focal cloud is the collection of focal points of any imperfect lens,whether optical, electrostatic or electromagnetic. This includes Parabolic antennas and lens type reflective antennas of all kinds.In this focal cloud illustration, a perfect… … Wikipedia
Feed horn — In satellite dish and antenna design parlance, a feedhorn (or feed horn) is a horn antenna used to convey radio waves between the transceiver (transmitter and/or receiver) and the reflector. The feedhorn also selects the polarity of the waves to… … Wikipedia
feedingfrenzy — feed·ing frenzy (fēʹdĭng) n. 1. A period of intense or excited feeding, as by sharks. 2. Excited activity by a group, especially around a focal point: “The media swirled and boiled around the newlyweds in a kind of all out feeding frenzy” (James… … Universalium
telescope — /tel euh skohp /, n., adj., v., telescoped, telescoping. n. 1. an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens… … Universalium
Parabolic antenna — A parabolic satellite communications antenna at Erdfunkstelle Raisting, the biggest facility for satellite communication in the world, in Raisting, Bavaria, Germany. It has a Cassegrain type feed. A parabolic antenna is an antenna that uses a… … Wikipedia
Arecibo Observatory — Arecibo Radio Telescope Organization SRI International, NSF, Cornell University Location … Wikipedia
History of the single-lens reflex camera — The history of the single lens reflex camera predates the invention of photography in 1826/27 by one and a half centuries with the use of a reflex mirror in a camera obscura first described in 1676. Such SLR devices were popular as drawing aids… … Wikipedia
Movie projector — This article is concerned with technical aspects of moving film projection. For non film movie projection, see digital cinema. For historical aspects, see the article history of cinema. 35 mm movie projector in operation … Wikipedia
photoreception — photoreceptive, adj. /foh toh ri sep sheuhn/, n. the physiological perception of light. [1905 10; PHOTO + RECEPTION] * * * Biological responses to stimulation by light, most often referring to the mechanism of vision. In one celled organisms such … Universalium
Conical scanning — is a system used in early radar units to improve their accuracy, as well as making it easier to steer the antenna properly to point at a target. Conical scanning is similar in concept to the earlier lobe switching concept used on some of the… … Wikipedia
