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Nolondil Wrote:
-------------------------------------------------------
> Even before we could reach extreme
> altitudes ourselves to see the curvature of the
> Earth, we could see extreme altitudes.
> Weather has been easily visible since long before
> any humans were around to see it. Just pay
> attention to the sky, which we moderns don't do
> much anymore. But ancient people did. Often, an
> incoming weather front at 30,000+ feet or more
> will be obviously curved. You can see how
> it extends away into the distance in a curve, not
> a straight line. The same kind of reasoning that
> allowed people to realize that the differing the
> angle of the sun would show the circumference of
> the Earth
> (E
> ratosthenes in the 3rd century BC
) would
> surely lead people to realize that the curvature
> of high-altitude weather fronts was a sign of the
> curvature of the Earth itself.


Another great proof is that the sun can cast shadows on the undersides of clouds as it's rising or setting. This couldn't happen on a flat earth, where the sun is always circling above the clouds:



Carol

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Subject Views Written By Posted
Helpful list of evidence that earth is a sphere 2949 dwm 09-Mar-16 04:19
Re: Helpful list of evidence that earth is a sphere 466 michael seabrook 09-Mar-16 10:28
Re: Helpful list of evidence that earth is a sphere 419 dwm 11-Mar-16 00:00
Re: Helpful list of evidence that earth is a sphere 440 carolb 09-Mar-16 14:31
Re: Helpful list of evidence that earth is a sphere 478 dwm 09-Mar-16 21:51
Re: Helpful list of evidence that earth is a sphere 417 carolb 10-Mar-16 12:59
Re: Helpful list of evidence that earth is a sphere 545 Aine 10-Mar-16 19:54
Re: Helpful list of evidence that earth is a sphere 385 dwm 11-Mar-16 00:02
Re: Helpful list of evidence that earth is a sphere 392 drew 11-Mar-16 05:22
Re: Helpful list of evidence that earth is a sphere 479 dwm 11-Mar-16 07:24
Re: Helpful list of evidence that earth is a sphere 508 carolb 11-Mar-16 12:51
Re: Helpful list of evidence that earth is a sphere 411 dwm 12-Mar-16 01:12
Re: Helpful list of evidence that earth is a sphere 356 drew 15-Mar-16 00:17
Re: Helpful list of evidence that earth is a sphere 379 dwm 15-Mar-16 13:36
Re: Helpful list of evidence that earth is a sphere 405 Nolondil 29-Mar-16 16:46
Re: Helpful list of evidence that earth is a sphere 844 carolb 29-Mar-16 17:31
Re: Helpful list of evidence that earth is a sphere 455 cladking 19-Mar-16 03:25
Re: Helpful list of evidence that earth is a sphere 504 dwm 19-Mar-16 04:10
Re: Helpful list of evidence that earth is a sphere 1014 carolb 19-Mar-16 23:04
Re: Helpful list of evidence that earth is a sphere 424 cladking 21-Mar-16 22:00
Re: Helpful list of evidence that earth is a sphere 507 carolb 21-Mar-16 22:42


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