Atomic Clock

National Physical Laboratory
National Physical Laboratory
45.6 هزار بار بازدید - 13 سال پیش - A film produced by the
A film produced by the NPL Film Unit in the 1950s explaining the principles behind the first accurate atomic clock, designed by Louis Essen and built at the National Physical Laboratory in 1955. We are very grateful to Ray Essen, Louis Essen's son-in-law, for unearthing this piece of NPL's history.
13 سال پیش در تاریخ 1391/02/14 منتشر شده است.
45,687 بـار بازدید شده
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