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Harold Lyons, American physicist

Harold Lyons, American physicist

H412/0479

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Credit

EMILIO SEGRE VISUAL ARCHIVES / AMERICAN INSTITUTE OF PHYSICS / SCIENCE PHOTO LIBRARY EMILIO SEGRE VISUAL ARCHIVES / AMERICAN INSTITUTE OF PHYSICS / SCIENCE PHOTO LIBRARY

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Caption

Harold Lyons (1913-1998), American physicist. Lyons contributed towards the construction of the first atomic clock in 1949. He had previously worked on microwave frequency standards at the NBS (National Bureau of Standards, now known as the National Institute of Standards and Technology, or NIST), which led to his interest in atomic frequency standards. He used this background to oversee the development of the atomic clock, which was based on the absorption of microwaves of ammonia.

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