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October 20, 1906 in History
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Event: Dr. Lee DeForest demonstrated his electrical vacuum tube (radio tube) |
Related Topics:
DeForest demonstrated Dr electrical Lee Radio Tube vacuum Related Year: 1906 Related Events: October 20 |
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More Notable Events on October 20:
1979 John F. Kennedy Library dedicated in Boston 1973 Queen Elizabeth II opens Sydney Opera House 1968 Jacqueline Kennedy marries Aristotle Onassis 1818 49th parallel forms as border between U.S. and Canada 1803 U.S. Senate ratifies Louisiana Purchase |
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