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1. Radio technology
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The most up-to-date way to keep time.
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5,000 years have passed since timekeeping began with sundials. In the
interim there have been water clocks, the mechanical clocks of the
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13th century and quartz watches. Now we have the Junghans radio-
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controlled watch. This is a watch that, with good reception, will never
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go wrong and never need setting. The Junghans radio-controlled watch
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is absolutely precise, as it is linked via radio technology to the timing
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control of the most accurate clock in the world, For Europe this is the
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Caesium Time Base at the Physikalisch-Technischen Bundesanstalt in
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Braunschweig (Germany's Institute of Natural and Engineering
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Sciences). For Japan the Caesium Time Base of the National Institute for
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Information and Communications Technology (NICT), a public admini-
stration authority organisation. For North America it is the U.S.
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Commerce Department's Caesium Time Base at the National Institute
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of Standards and Technology (NIST) in Boulder, Colorado. These clocks
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are so accurate that they are expected to deviate by no more than
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1 second in a million years.
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