Quartz Clock

Description:

This clock was built at the U. S. Naval Observatory about 1936 as part of an experimental program to control time signals transmitted by radio. It is a quartz clock, that is, it depends on a specially cut piece of quartz crystal to keep time. The search for a better timekeeper than the best pendulum clocks led to the development of quartz-crystal clocks, the first of which telecommunications engineers at Bell Telephone Laboratories built in 1927 to monitor and control frequencies.

Date Made: 1936

Location: Currently not on view

See more items in: Work and Industry: Mechanisms, Military, Time and Navigation, Measuring & Mapping

Exhibition:

Exhibition Location:

Credit Line: Transfer from U.S. Naval Observatory

Data Source: National Museum of American History

Id Number: ME.319994Catalog Number: 319994Accession Number: 240411

Object Name: clockclock, quartzOther Terms: clock; Electronic (Quartz); Free-Standing Clock

Physical Description: metal (amplifying apparatus material)metal (time indicating mechanism material)Measurements: overall: 44 1/2 in x 20 in x 17 1/2 in; 113.03 cm x 50.8 cm x 44.45 cm

Guid: http://n2t.net/ark:/65665/ng49ca746a6-8af5-704b-e053-15f76fa0b4fa

Record Id: nmah_850827

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