Can you show that earth is sphere without any proof from the picture show that earth is sphere?

Question

SPHERE OF EARTH ?

Answer 1

If you'll allow me to wear my pedantic hat for a moment, the Earth is not a sphere, but an oblate spheroid (slightly fatter around the equator than around the poles).

But a simple way is to go to a sea port and watch ships coming in over the horizon. At sea level the horizon is about three miles distant, but you can see large ships coming up from much further away, and they gradually appear up from over the horizon. Another simple proof is to log on to a live webcam in a distant country, showing how when it's daytime where you are, it's night around the other side of the planet. The circular shadow on the moon during lunar eclipses, communications satellites in orbit, line-of-sight limitations with radio and television transmitters, even just going up in an aeroplane and seeing the gentle curve of the horizon all around, all these things illustrate the curvature of the Earth.

Answer 2

Yes: as a ship appears on the horizon the first thing you see is the top of its' mast then more and more of it. Try this (to scale) with a football and the same thing will happen.  If it walks like a duck and quacks like a duck then (until proven othewise) it is a duck.

Answer 3

the earth was known to be round before space travel - a simple search on wiki will tell you this.  How do you think they did it?

Clue: they didn't use this site :P

Answer 4

Look at the moon when a lunar eclipse takes place. The edge of the earth's shadow on the moon is always curved. The only object which always casts a curved shadow is a sphere.