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What Is An Atomic Clock?
The first atomic clock came into existence in 1949. The U.S. National Bureau of standards was the home of this prototype of modern atomic clocks. The first accurate atomic clock was designed in 1955. This clock was based upon the transition of the caesium-133 atom. The discovery of this technology was the basis if the internationally agreed upon second. The United States has an official clock, an atomic clock, that is responsible for the accuracy of time throughout the country and is working in conjunction with clocks around the world to ensure that time is kept in unison across the globe.
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