Question

What is Sundial? How does it work?​

Answer 1

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A sundial is a device that tells the time of day when there is sunlight by the apparent position of the Sun in the sky. In the narrowest sense of the word, it consists of a flat plate (the dial) and a gnomon, which casts a shadow onto the dial. The gnomon casts a broad shadow; the shadow of the style shows the time.

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Answer 2

Explanation:

Sundial, the earliest type of timekeeping device, which indicates the time of day by the position of the shadow of some object exposed to the sun's rays. ... As the day progresses, the sun moves across the sky, causing the shadow of the object to move and indicating the passage of time.