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Re: Is Earth Actually Flat?

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Mahipal <mahipal7638@gmail.com> wrote:
> On Thursday, November 12, 2015 at 11:01:10 PM UTC-5, ji...@specsol.spam.sux.com wrote:
>> Mahipal <mahipal7638@gmail.com> wrote:
>> > On Thursday, November 12, 2015 at 8:16:06 PM UTC-5, ji...@specsol.spam.sux.com wrote:
>> >> Fabian Russell <root@localhost.localdomain> wrote:
>> >> > On Thu, 12 Nov 2015 23:32:01 +0000, jimp wrote:
>> >> > 
>> >> >> I thought we had settled that in 1492.
>> >> > 
>> >> > It was settled 2000 years earlier.
>> >>  
>> >> As usual, half assed correct.
>> >> 
>> >> It was suspected over 2000 years ago, and by the late 17th Century thought
>> >> so by most scientists of the time, but not proven until the voyages of
>> >> Columbus and Magellan.
>> > 
>> > It may have been suspected by some, but the Greeks pretty well knew it
>> > more than 2500 years ago. They even computed the radius of Earth by
>> > lengths of shadows at different locations, at the same time of
>> > day. Their accuracy was very close to the 6378km radius of today.
>> 
>> Yes, but they could not prove it, nor did the theory gain much traction
>> around the world until about the 17th Century after the invention of
>> the telescope and people could see that the heavenly bodies were spheres
>> and not discs.
> 
> Getting a measure of Earth's radius pretty much already proves it. The
> circular shadows of Earth on the Moon, pretty much proves it. No CGI
> enhanced images required. 17th Century? Galileo was (1564-1642), so
> that is true for the Romans. Those people tried to get Galileo to
> STFU. Paint the complete picture, not some silly fraction of it.

Nope, they were major clues but a disc Earth would cast a circular
shadow and calculating a radius does not PROVE the Earth a sphere.

The point is PROOF and world wide acceptance, not whether or not someone
in isolation got it right early on.

The invention of the telescope made it obvious that celestial objects
were spheres, not discs, which went a long way in getting the theory of
a spherical Earth accepted world wide.

The act of sailing around the Earth put the final nail in the coffin
of the disc Earth theory as it was absolute proof.


-- 
Jim Pennino

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Thread

Is Earth Actually Flat? Sam Wormley <swormley1@gmail.com> - 2015-11-12 16:52 -0600
  Re: Is Earth Actually Flat? gilber34 <fafa@invalid.com> - 2015-11-12 17:00 -0600
  Re: Is Earth Actually Flat? jimp@specsol.spam.sux.com - 2015-11-12 23:32 +0000
    Re: Is Earth Actually Flat? Fabian Russell <root@localhost.localdomain> - 2015-11-13 00:30 +0000
      Re: Is Earth Actually Flat? jimp@specsol.spam.sux.com - 2015-11-13 01:10 +0000
        Re: Is Earth Actually Flat? Fabian Russell <root@localhost.localdomain> - 2015-11-13 01:38 +0000
          Re: Is Earth Actually Flat? jimp@specsol.spam.sux.com - 2015-11-13 01:52 +0000
        Re: Is Earth Actually Flat? Mahipal <mahipal7638@gmail.com> - 2015-11-12 18:14 -0800
          Re: Is Earth Actually Flat? jimp@specsol.spam.sux.com - 2015-11-13 03:47 +0000
            Re: Is Earth Actually Flat? Fabian Russell <root@localhost.localdomain> - 2015-11-13 04:03 +0000
              Re: Is Earth Actually Flat? benj <none@gmail.com> - 2015-11-13 00:14 -0500
            Re: Is Earth Actually Flat? benj <none@gmail.com> - 2015-11-13 00:20 -0500
              Re: Is Earth Actually Flat? Fabian Russell <root@localhost.localdomain> - 2015-11-13 06:15 +0000
                Re: Is Earth Actually Flat? jimp@specsol.spam.sux.com - 2015-11-13 07:04 +0000
            Re: Is Earth Actually Flat? Mahipal <mahipal7638@gmail.com> - 2015-11-13 07:46 -0800
              Re: Is Earth Actually Flat? jimp@specsol.spam.sux.com - 2015-11-13 19:35 +0000
      Re: Is Earth Actually Flat? Sam Wormley <swormley1@gmail.com> - 2015-11-12 20:12 -0600
        Re: Is Earth Actually Flat? noTthaTguY <abu.kuanysh05@gmail.com> - 2015-11-13 13:09 -0800
  Re: Is Earth Actually Flat? "reber g=emc^2" <herbertglazier0@gmail.com> - 2015-11-12 15:53 -0800
    Re: Is Earth Actually Flat? "reber g=emc^2" <herbertglazier0@gmail.com> - 2015-11-16 16:37 -0800

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