The president of NBC and owner of RCA Victor Records became extremely furious at being beaten by the competitor, especially as Columbia was a much smaller company than RCA. In a blind rage, the president set a task for the RCA engineers to develop their own new format. The 45rpm! It is said that the 45rpm came into existence when they took 78 and subtracted 33 which left them with 45, and hey presto the 45rpm 7inch vinyl disc was created. However, looking at the techniques of vinyl recording technology; Calculus was used to show that the optimum use of a disc records constant rotational speed!
record speed occurs when the innermost recorded diameter is half the outermost recorded diameter, and for that reason the 7-inch 45rpm single has a label of 3 and 1/2 inches in diameter. Isn't so easy to come up with the idea of the subtraction format to produce the 45rpm dis. 1892 General Electric (GE) formed through merger of Edison General Electric & Thomson-Houston Electric.1919 Radio Corporation of America (RCA) incorporated to control patents of General Electric, AT&T, Westinghouse, United Fruit. 1919 David Sarnoff becomes General Manager of RCA.1926 NBC established by RCA (50%) General Electric (30%), Westinghouse (20%)!
In the year of 1926 NBC radio network was established! 1928 saw first regular schedule of US television programming begun by RCA in Schenectady broadcasts Tuesday, Thursday, and Friday from 1:30 to 3:30 pm. 1929 RCA and Victor merge. 1931 NBC puts TV transmitter atop Empire State Building. 1932 RCA demonstrates all electronic television system. General Electric was sold to RCA in 1932. And notable in our time of the 21st century the General Electric Company still exists. It is not too easy to forget the man that company had once owned by Thomas Edison!