Question

What is sundial ? 11poiny

Answer 1

Answer:

An instrument showing the time by the shadow of a pointer cast by the sun on to a plate marked with the hours of the day.

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Answer 2

Sundials :

Sundials or sun clocks were primitive clocks. They were first used around 3500 BC by Egyptians, who built huge obelisks or four-sided monuments. Obelisks were used as sundials. People could tell time using a sundial by observing the shadows formed on the ground. The shadows changed their position according to the time of the day. The sundial system was an easier method of telling time than looking at the sun's position in the sky to measure time. Small and modified sundials were designed by 1500 BC. However, sundials do not work on cloudy days and at night.