March 5, 1961 (Sunday)
- At a press conference at Andrews Air Force Base, spokesmen for the U.S. Air Force Research and Development command announced that they had developed an atomic clock "so accurate that its biggest error would not exceed one second in 1271 years", and, at 62 pounds, light enough that it could be used on aircraft in place of the existing system of crystal oscillators. Conventional atomic clock units, though more accurate, weighed over 600 pounds and were impractical for flight.
- The crash of a U.S. Air Force Boeing KB-50 refueling plane killed all ten men on board.
- Born: Marcelo Peralta, Argentinian musician, in Buenos Aires
- Died: Kjeld Abell, 59, Danish playwright, shortly after finishing his last work, Skriget (The Scream)
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Famous quotes containing the word march:
“Unaffected by “the march of events,”
He passed from men’s memory in l’an trentiesme
De son eage; the case presents
No adjunct to the Muses’ diadem.”
—Ezra Pound (1885–1972)