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In good old times, there was no prime meridian at all, it is a late invention.
People recorded their longitudes as "X degrees, Y minutes West of Paris",
or more frequently, from their departure point.

Alex.

________________________________________
From: NavList@fer3.com [NavList@fer3.com] on behalf of Richard L. Stinson [NoReply_Stinson@fer3.com]
Sent: Friday, August 14, 2015 8:36 PM
To: eremenko@math.purdue.edu
Subject: [NavList] Re: NOW what?

Great point! Rick

On Fri, Aug 14, 2015 at 8:02 PM, Alexandre Eremenko <
NoReply_Eremenko@fer3.com> wrote:

> This  article is very confusing: the prime meridian cannot be wrong.
> The prime meridian is arbitrary (unlike the equator).
> Where you decide to draw it there it will be.
>
> That GPS designers decided to place it differently from the 18 century astronomers,
> and why did they do this, the article does not explain.
>
> Alex.
>
> ________________________________________
> From: NavList@fer3.com [NavList@fer3.com] on behalf of Norm Goldblatt [NoReply_Goldblatt@fer3.com]
> Sent: Friday, August 14, 2015 5:16 PM
> To: eremenko---.edu
> Subject: [NavList] NOW what?
> http://www.iflscience.com/prime-meridian-greenwich-wrong-place
>
>
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http://fer3.com/arc/m2.aspx/NOW-what-Stinson-aug-2015-g32442

   

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