Science on the 20th of November 1906 in history

Science

Date	Type	Text
20 Nov 1906 Rolls-Royce	science	Rolls-Royce In 1906, Charles Stewart Rolls and Frederick Henry Royce formed Rolls-Royce.	0
20 Nov 1906 Crystal Detector	science	Crystal Detector In 1906, a U.S. patent was issued for the crystal detector, which was one of the first devices widely used for receiving radio broadcasts (until superseded by the triode vacuum tube). It was invented by Greenleaf Whittier Pickard, a U.S. electrical engineer. His patent described it as "a means for receiving intelligence communicated by electric waves."	0

19th November 1906 21st November 1906

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Science on the 20th of November 1906 in history

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