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May 29, 1335
The first public clock appeared in Milan.
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May 29, 1400
Small clocks made with coiled wire made an appearance.
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The clock was patented
The first clock was invented and patented by Eli Terry. -
Period: to
history of the clock
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Salespeople for the R.W. Sears Watch Company fan out across America selling affordable timepieces. The firm is later renamed Sears, Roebuck and Co.
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A second is formally defined as 9,192,631,770 vibrations of the cesium atom. For the first time, time is not defined by the movement of astronomical bodies.
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Time is more popular than ever: about half-a-billion watches are sold each year.