Question

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Answer 1

Explanation:

In older days, the sundial is looked on as being a form of sun-powered clock. ... This shadow clock or sundial permitted one to measure the passage of hours within a day. Another very early form of clock to tell the time was the water clock. The water clock was used by the ancient Greeks.

In modern days, the atomic clock provides the most precise time scale. It has made possible new, highly accurate techniques for measuring time and distance.Atomic clocks serve as the basis of scientific and legal clock times.

Answer 2

Answer:

In olden days time was measured with the help of

1 . sand clock

2. sundial

3. sun

In present days time is measured with the help of

1. clock

2 . watches

To get the most accurate measurement we can use the " Atomic clock "

Explanation:

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