frequency selective

См. также в других словарях:

• Frequency selective surface — Als Frequency selective surface (FSS), zu deutsch etwa frequenzselektive Oberfläche, bezeichnet man Flächen, die elektromagnetische Strahlung frequenzabhängig reflektieren, insbesondere im Radiofrequenzbereich mit einer Frequenz bis hinauf zu… …   Deutsch Wikipedia

• Selective fading — or frequency selective fading is a radio propagation anomaly caused by partial cancellation of a radio signal by itself mdash; the signal arrives at the receiver by two different paths, and at least one of the paths is changing (lengthening or… …   Wikipedia

• Frequency modulation — See also: Amplitude modulation In telecommunications, frequency modulation (FM) conveys information over a carrier wave by varying its frequency (contrast this with amplitude modulation, in which the amplitude of the carrier is varied while its… …   Wikipedia

• Selective Ultraviolet Phototherapy — is a form of treatment for certain skin disorders (including atopic skin disorder and vitiligo when used with psoralen to form the PUVA treatment) It consists mostly of the UVA band of ultraviolet light (fairly closely matching the ultraviolet… …   Wikipedia

• Selective calling — SECAL redirects here. For the French wine grape also known as Secal, see Jurançon (grape). In a conventional, analog two way radio system, a standard radio has noise squelch or carrier squelch which allows a radio to receive all transmissions.… …   Wikipedia

• Selective chemistry of SWNT — Single walled nano tubes (SWNT) Structure and Reactivity Reactivity of the fullerene molecules with respect to addition chemistries is strongly dependent on the curvature of the carbon framework. Their outer surface (exohedral) reactivity… …   Wikipedia

• Selective sweep — A selective sweep is the reduction or elimination of variation among the nucleotides in neighbouring DNA of a mutation as the result of recent and strong natural selection. A selective sweep can occur when a new mutation occurs in a gene that… …   Wikipedia

• Selective immunoglobulin A deficiency — Infobox Disease Name = PAGENAME Caption = The dimeric IgA molecule. 1 H chain, 2 L chain, 3 J chain, 4 secretory component DiseasesDB = 29569 ICD10 = ICD10|D|80|2|d|80 ICD9 = ICD9|279.01 ICDO = OMIM = 137100 MedlinePlus = 001476 eMedicineSubj =… …   Wikipedia

• frequency illusion — n. The tendency to notice instances of a particular phenomenon once one starts to look for it, and to therefore believe erroneously that the phenomenon occurs frequently. Example Citations: The word issues bothers a fair number of people,… …   New words

• selective calling system — An automatic signaling system used in aircraft to notify the pilot that the aircraft is receiving a call. Each aircraft operated by an airline is assigned a particular four tone combination for identification purposes. A ground station keys the… …   Aviation dictionary

• selective — adj. 1 using or characterized by selection. 2 able to select, esp. (of a radio receiver) able to respond to a chosen frequency without interference from others. Phrases and idioms: selective service US hist. service in the armed forces under… …   Useful english dictionary