lighthouse diode
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Lighthouse — For other uses, see Lighthouse (disambiguation). Speculative drawing (c. 2006) of the Lighthouse of Alexandria, on the island of Pharos … Wikipedia
Katiki Point Lighthouse — Location Katiki Point, South Island, New Zealand Coordinates … Wikipedia
Invention of radio — Great Radio Controversy redirects here. For the album by the band Tesla, see The Great Radio Controversy. Contents 1 Physics of wireless signalling 2 Theory of electromagnetism … Wikipedia
List of vacuum tubes — This is a list of vacuum tubes or thermionic valves. Before the advent of semiconductor devices, hundreds of tube types were used in consumer and industrial electronics; today only a few types are still used in specialized applications. Contents… … Wikipedia
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
Tube socket — Left to right: octal (top and bottom view), loctal, and miniature (top and side view) sockets. An early transistor socket and an IC socket are included for comparison. Tube sockets are electrical sockets into which vacuum tubes (also known as… … Wikipedia
Pollution lumineuse — L’expression pollution lumineuse (light pollution, ou photopollution pour les anglophones) désigne à la fois la présence nocturne anormale ou gênante de lumière et les conséquences de l éclairage artificiel nocturne sur la faune, la flore, la… … Wikipédia en Français
Guglielmo Marconi — Born 25 April 1874(1874 04 25) Palazzo Marescalchi, Bologna … Wikipedia
RMA tube designation — In the years 1942 1944, the Radio Manufacturers Association used a descriptive nomenclature system for industrial, transmitting, and special purpose vacuum tubes. The numbering scheme was distinct from both the numbering schemes used for standard … Wikipedia
Yankee Stadium — This article is about the stadium that opened in 2009. For the original stadium formerly located across the street, see Yankee Stadium (1923). Yankee Stadium … Wikipedia
Lighting — Not to be confused with lightning. For other uses, see lighting (disambiguation). Low intensity lighting and haze in a concert hall allows laser effects to be visible … Wikipedia
