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Thomas A. Edison

communication
Germany’s First Radio Program Goes Public

Germany’s First Radio Program Goes Public

Tabea Tietz
On October 29, 1923 the very first radio program in Germany was broadcast from the Vox-Haus in Berlin, Tiergarten. Funk-Stunde AG Berlin was the first radio station in Germany. The station was operated by the broadcasting company of the same name and broadcast its program from Berlin in the then northern German broadcasting district. Technical Background and Key Figures The history of the radio is long and for many years it was not…
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communication
Mary Had a Little Lamb – Edison and the Phonograph

Mary Had a Little Lamb – Edison and the Phonograph

Harald Sack
On July 18, 1877 Thomas A. Edison conceived the first idea for his phonograph, the very first mechanical tool for recording and reproducing (replaying) sound. The phonograph also was the invention that first gained him public notice. Only a Byproduct Actually, the phonograph was intended as a byproduct of Edison’s efforts to “play back” recorded telegraph messages and to automate speech sounds for transmission by telephone. The recordings of the first phonograph…
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physics
Charles Proteus Steinmetz and the Alternating Current

Charles Proteus Steinmetz and the Alternating Current

Tabea Tietz
On October 26, 1923, German-born American mathematician and electrical engineer Charles Proteus Steinmetz passed away. Steinmetz fostered the development of alternating current that made possible the expansion of the electric power industry in the United States, formulating mathematical theories for engineers. He made ground-breaking discoveries in the understanding of hysteresis that enabled engineers to design better electromagnetic apparatus equipment including especially electric motors for use in industry. “The scientist is contented if…
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