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Clock - Wikipedia
A clock or a timepiece is a device used to measure and indicate time. The clock is one of the oldest human inventions, meeting the need to measure intervals of time shorter than the natural units: the day, the lunar month, year and galactic year. Devices operating on several physical processes
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Xem thêmThe word clock derives from the medieval Latin word for 'bell'—clocca—and has cognates in many European languages. Clocks spread to England from the Low Countries, so the English word came from the Middle Low German
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Xem thêmSundials
The apparent position of the Sun in the sky moves over the course of each day, reflecting the rotation of the Earth. Shadows cast by...
Xem thêmThe invention of the mechanical clock in the 13th century initiated a change in timekeeping methods from continuous processes, such as the motion of the gnomon's
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Xem thêmClocks can be classified by the type of time display, as well as by the method of timekeeping.
Time display methods
Analog
Analog clocks usually use a clock facewhich indicates time using...
Xem thêm• 24-hour analog dial
• Allan variance
• Allen-Bradley Clock Tower at Rockwell Automation Headquarters Building (Wisconsin)
• American Watchmakers-Clockmakers Institute...
Xem thêm• Baillie, G.H., O. Clutton, & C.A. Ilbert. Britten's Old Clocks and Watches and Their Makers (7th ed.). Bonanza Books (1956).
• Bolter, David J. Turing's Man: Western Culture in the...
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Clocks (song) - Wikipedia
"Clocks" is a song by British rock band Coldplay. It was written and composed as a collaboration among all the members of the band for their second album, A Rush of Blood to the Head. Built around a piano riff, the song features cryptic lyrics concerning themes of contrast and urgency. Several remixes of the track exist, and its riff has been widely sampled.
Wikipedia · Nội dung trong CC-BY-SA giấy phép24-hour clock - Simple English Wikipedia, the free ...
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