There are three ancient clocks they are:-1.Sundail2.Hour glass3.Pendelum
sun dial,water clo ck,
the ancient egyptians.
Keeping time, in the days before mechanical clocks.
You turn the clocks back because the days get longer.
Yes, clocks use energy to operate. This energy can come from batteries, electricity, or mechanical mechanisms like springs. Digital clocks typically require electricity, while analog clocks may use batteries or winding mechanisms to function.
Any Encyclopedia will report that clocks were invented in ancient times, as sundials are primitive clocks. As for mechanical clocks, there are public clocks from the 14th which are still on display in the Science Museum in Britain. See http://www.sciencemuseum.org.uk/on-line/wells-clock/index.asp
silk road
He didn't invent it, but improved on it. Clocks have been in use for thousands of years. The Chinese had a water clock and by the 1300's in Europe there were candles to measure time. The ancient Greeks and Egyptians had clocks as well.
Ctesibus was a Greek inventor who made water clocks with moving figures on them.
Time and attendance clocks are used by employers to track the days and hours worked by employees. They can either be physical clocks which stamp the time, or electronic clocks which store times digitally.
Clocks evolved from ancient sundials and water clocks to mechanical devices in the Middle Ages, which introduced gears and pendulums for improved accuracy. The 17th century saw the advent of the pendulum clock, significantly enhancing timekeeping precision. In the 20th century, quartz technology revolutionized clocks with greater accuracy and smaller sizes, leading to the widespread use of digital clocks. Today, atomic clocks represent the pinnacle of timekeeping, achieving unparalleled precision and reliability.