Question

write about two modern time keeping device
class 7 physics
if u answer me i will mark u as a brainlist..​

Answer 1

Answer:

• CLOCK is used to measure, keep and indicate time ,it is an one of the oldest human invention.
• A Sundial shows the time by displaying the position of shadow on the flat surfaces .

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Answer 2

Answer:

Hii....

Two modern timekeeping devices:

1. water clocks.
2. candles.
3. watches.
4. wall clocks.etc.,

The measurement of time began with the invention of sundials in ancient Egypt some time prior to 1500 B.C. However, the time the Egyptians measured was not the same as the time today's clocks measure. For the Egyptians, and indeed for a further three millennia, the basic unit of time was the period of daylight.

Timepieces allowed us to measure time in accurate, uniform ways.

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