Thomas Jefferson becomes the first secretary of state, the Dachau concentration camp opens, The Beatles release their first album, and the Comet Hale-Bopp does a fly-by, all on this day.
1960: The first laser is patented by Arthur Schawlow and Charles Hard Townes under the title "Masers and Maser Communications System." What distinguished this invention as the first laser is that it was the first to operate in the visible light spectrum. The patent was assigned to the Bell Telephone Laboratories, where they had done the research.
Warner Bros. Television
White House Historical Association
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