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Joel Solon Spira (March 1, 1927 – April 8, 2015) was an American inventor, entrepreneur, and business magnate.. He invented a version of the light-dimmer switch for use in homes around the United States and led his Lutron Electronics Company into the production of lighting controllers.
When used for plain old telephone service (POTS), the first wire is known as the tip or A-leg (U.K.) conductor, and is usually connected to the positive side of a direct current (DC) circuit, while the second wire is known as the ring lead or B-leg (U.K.), and is connected to the negative side of the circuit. Neither of these two sides of the ...
This type of diagram could be called temperature-luminosity diagram, but this term is hardly ever used; when the distinction is made, this form is called the theoretical Hertzsprung–Russell diagram instead. A peculiar characteristic of this form of the H–R diagram is that the temperatures are plotted from high temperature to low temperature ...
The first rubber-insulated cables for US building wiring were introduced in 1922 with US patent 1458803, Burley, Harry & Rooney, Henry, "Insulated electric wire", issued 1923-06-12, assigned to Boston Insulated Wire and Cable . These were two or more solid copper electrical wires with rubber insulation, plus woven cotton cloth over each ...
The Smith chart (sometimes also called Smith diagram, Mizuhashi chart (水橋チャート), Mizuhashi–Smith chart (水橋スミスチャート), [1] [2] [3] Volpert–Smith chart (Диаграмма Вольперта—Смита) [4] [5] or Mizuhashi–Volpert–Smith chart) is a graphical calculator or nomogram designed for electrical and electronics engineers specializing in radio ...
A twelve-ship formation over the Guadalupe River in the vicinity of Foster Field, Texas, summer 1942. Victoria Regional Airport (IATA: VCT, ICAO: KVCT, FAA LID: VCT) is a county-owned, public-use airport located five nautical miles (6 mi, 9 km) northeast of the central business district of Victoria, a city in Victoria County, Texas, United States. [1]
In his 1952 paper "A Chart Method for Simplifying Truth Functions", [2] Veitch described a graphical procedure for the optimization of logic circuits, which is referred to as Veitch chart. A year later (in 1953), the method was refined in a paper by Maurice Karnaugh [3] into what became known as Karnaugh map (K-map) or Karnaugh–Veitch map (KV ...