Youtor
History of timekeeping devices
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If you find our videos helpful you can support us by buying something from amazon. • https://www.amazon.com/?tag=wiki-audi... • History of timekeeping devices • For thousands of years, devices have been used to measure and keep track of time.The current sexagesimal system of time measurement dates to approximately 2000 BC, in Sumer. • =======Image-Copyright-Info======== • License: Creative Commons Attribution-Share Alike 3.0 (CC-BY-SA-3.0) • LicenseLink: http://creativecommons.org/licenses/b... • Author-Info: User:S Sepp • Image Source: https://en.wikipedia.org/wiki/File:Wo... • =======Image-Copyright-Info======== • -Video is targeted to blind users • Attribution: • Article text available under CC-BY-SA • image source in video • • • History of timekeeping devices
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