Geography/Sight

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Question
Suppose the earth is flat, how far can we see on earth level with our bear eyes?

Thank you in advance.
Lenin

Answer
This is a 'that depends' question.

It depends on how high your bare eyes are off the ground.  

Round Earth: For an observer on the ground with eye level at h = 5 ft 7 in (1.70 m), the horizon is at a distance of 2.9 miles (4.7 km). For an observer standing on a hill or tower 100 feet (30 m) in height, the horizon is at a distance of 12.2 miles (19.6 km).

Flat Earth: For all intents and purposes, it would be the same.  There's a good article about it here:

http://www.askamathematician.com/2012/08/q-if-earth-was-flat-would-there-be-the-

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John

Experience

Just a lifetime of experience traveling around the world.

Education/Credentials
B.A. Degree, Chaminade University of Honolulu, Summa cum Laude.

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