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Question: What was the first ever record in stereo?

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By: Guest
Date: Thu-Feb-18-2016-
Response
0

According to the information I was able to gather, the first experimental stereo recording were made by Leopold Stokowski and the Philadelphia Orchestra in 1932. But it was not until the early 50's that stereo recordings started to be sold to the public.
[d] By: Guest
Date: Thu-Feb-18-2016
Response
0
The first flat, circular record was invented by Emile Berliner (1851-1929), a German-born American inventor, in 1887 (he also invented the gramophone, the machine that played his flat records). Berliner's records were originally made of glass, then zinc, and later, hard rubber. Berliner founded Deutsche Grammophon and Britain's Gramophone Co., Ltd.

By 1915, records rotated at a standard 78-rpm (rotations per minute) and were made of shellac (which is very fragile); they were 10 inches in diameter and recorded 4 minutes of sound. The long-playing record (the LP) was invented in 1948 by Columbia Records - it played at 33-rpm and was 10 or 12 inches in diameter. The LP was made from flexible plastic vinyl (vinylite) and not rubber. Using new microgrooves, these records recorded over 20 minutes of sound. In 1949, 7-inch 45-rpm records were introduced.

Stereophonic technology began in 1931, when English inventor Alan D. Blumlein patented a system for producing stereo discs by combining Edison's vertical-cut groove (one cut with only up-and-down agitation) with lateral-cut grooves (those cut with side-to-side agitation) like those of monaural recordings. The 1940 Walt Disney film Fantasia was presented in stereo, marking the first public appearance of the new technology.
[d] By: Guest
Date: Thu-Feb-18-2016
Response
What is 1 + 100



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