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Name two ancient clocks?

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Name two ancient clocks?
posted Jan 16, 2019 by Imran Hussain

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Sundials
Sundials have their origin in shadow clocks, which were the first devices used for measuring the parts of a day. The oldest known shadow clock is from Egypt, constructed about 3500 BC, are also among the earliest shadow clocks.

Hourglass
An hourglass (sandglass , sand timer , sand clock , egg timer) measures the passage of a few minutes or an hour of time. It has two connected vertical glass bulbs allowing a regulated trickle of material from the top to the bottom. Once the top bulb is empty, it can be inverted to begin timing again.

answer Jan 17, 2019 by Salil Agrawal
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