часовник на батерии

часовник на батерии

Alexander Bain designed the first battery clock shortly before 1838. Today the term is applied to portable electric clocks which depend on a dry cell or battery for its electrical power. The older type of battery clocks employed a large bell cell and would run for long periods: the Eureka clock ran for 1,000 days, the Bulle clock for 800 days; whereas a modern battery clock using a small cell will run for approximately one year.

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Part of Speech: noun
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Industry/Domain: Chronometry
Category: Clock
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