How it is proved by looking pole star that the earth is spherical in shàpe?
Answers
Answer:
Explanation:
Pole Star is the brightest star in the night sky, when one looks up to the sky from any place on the earth.
As it is a huge star that is far away from earth, it looks stationary even though the earth is rotating.
When looked from the North Pole, it appears to be vertically above and closest to the earth.
However, its position seems to change a bit to a tilting position, as a person moves away from the North Pole, thus proving that the earth is a sphere.
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The Pole Star can be seen at an angle of 90° at the North Pole, as it lies directly at the line of axis of the earth, while its angle decreases towards the Equator i.e. it is 0° at the equator. It is only possible in an quarter arc of a circle. It proves that the earth is a sphere with circular surface.
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