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It is a common thought in our mind to ask how did the person who invented the clock know what time it was. Right from the medevial age, time was measured in ancient times using a variety of equipments including Obelisks, Sundials, Water clocks, Candle clocks, Hourglass etc and now we are in the era of Atomic clocks and Optical clocks.
This malayalam video tells you the brief history of time and the devices that were used for measuring time.
#howwastimemeasured #clocks
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