Question

How can you prove that the Earth is sphere by looking at horizon

Answer 1

Answer:

Watch a ship sail off to sea

Without being in the sky, it is impossible to see the curvature of the Earth. However, you can always see a demonstration of this if you visit a harbor or any place with a wide-open view of the water.

If you are able to watch a ship sail off to sea, watch its mast and flag as it fades off into the distance. You will notice that, in fact, it does not "fade off into the distance" at all; instead, you will see its mast and flag appear to slowly sink. The ship sailed beyond the point at which you would see it. Just to be sure, bring a pair of binoculars with you so that you can see even farther off into the distance.

It's as if you're watching it go over to the other side of a hill. This phenomenon can only be explained by a sphere-shaped planet.

   

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Answer 2

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• The view of the earth surface as seen from a height is circular. With increasing in altitude the circular horizon also widens. Had the earth surface been flat the horizon would not have been the same irrespective altitude.

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