This is a carbon microphone used by Eugene Augstin Lauste during his experimentation with sound-on-film technology ca. 1904-1913. Microphone consists of a black wood platform raised on two wood blocks ...

Conventional wisdom has it that the solid state era in electronics began in 1948 with the invention of the transistor, or if you wish to split hairs, with the 1930s invention by the Russian [Oleg ...

Microphones are, perhaps, one of the most taken-for-granted electrical devices ever developed for wide-spread use. They have been used to guide military troops in times of war, provide millions of ...

From the Massachusetts Eye and Ear Infirmary. Weille, Francis L. — Assistant surgeon, Massachusetts Eye and Ear Infirmary. Billings, Bruce H. For records and addresses of authors see "This Week's ...

As a long-time collector of early microphones, I’ve always been intrigued by this image. It shows the microphone storage room at NBC in New York in 1929. Operating engineer George McElrath is checking ...

Conventional wisdom has it that the solid state era in electronics began in 1948 with the invention of the transistor, or if you wish to split hairs, with the 1930s invention by the Russian [Oleg ...