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Three vinyl records of different formats, from left to right: a 12 inch LP, a 10 inch LP, a 7 inch single. A phonograph record (also known as a gramophone record, especially in British English) or a vinyl record (for later varieties only) is an analog sound storage medium in the form of a flat disc with an inscribed, modulated spiral groove.
A television set, also called a television receiver, television, TV set, TV, or telly, is a device that combines a tuner, display, and speakers for the purpose of viewing television. Introduced in the late 1920s in mechanical form, television sets became a popular consumer product after World War II in electronic form, using cathode ray tubes .
In a belt-drive turntable the motor is located off-center from the platter, either underneath it or entirely outside of it, and is connected to the platter or counter-platter by a drive belt made from elastomeric material. The direct-drive turntable was invented by Shuichi Obata, an engineer at Matsushita (now Panasonic). [61]
Technics (テクニクス, Tekunikusu) is a Japanese audio brand established by Matsushita Electric (now Panasonic) in 1965.Since 1965, Matsushita has produced a variety of HiFi and other audio products under the brand name, such as turntables, amplifiers, radio receivers, tape recorders, CD players, loudspeakers, and digital pianos.
RCA Victor began selling the first all-electric Victrola in 1930 and in 1931 the company attempted to revitalize record sales with the introduction of 33 1 ⁄ 3 revolutions-per-minute (rpm) long play records, which were a commercial failure during the Great Depression, partly because the Victrolas with two speed turntables required to play ...
The CRT was the system of electronic television that was subsequently developed in later years, as technology caught up with Campbell-Swinton's initial ideas. Other inventors would use Campbell-Swinton's ideas as a starting-point to realise the CRT television as the standard, workable form of all electronic television that it became for decades ...
In December 1877, [5] Thomas Edison and his team invented the phonograph using a thin sheet of tin foil wrapped around a hand-cranked, grooved metal cylinder. [6] Tin foil was not a practical recording medium for either commercial or artistic purposes, and the crude hand-cranked phonograph was only marketed as a novelty, to little or no profit.
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