Question

Write a short note on the different types of clocks used from ancient times to the present.

Answer 1

From the ancient times, people are measuring the time in their own ways. Ancient people used calendars similar to the present ones to measure time. Later on sundials and hour glass were used to keep a track of time. Apart from this, water clocks were also used in some parts of the world. But all these devices were not able to measure the time accurately. Later on,Christian Huygens in 1656 developed pendulum clock that showed a reliable time measure than the earlier ones. Later on, atomic clocks were invented that showed the measurement of time accurately.