[Leica] See, the Earth Really is Round...

[r.s.taylor at comcast.net (Richard Taylor)]

Yeah, you know, you've jogged my memory.  There were those even well  
before Columbus, possibly the Chinese, but also the Portuguese, I  
think, who not only saw this effect and recognized what it meant, but  
had actually worked out an approximate diameter of the Earth.   
Columbus used this data as a basis for his travel time calculations  
only to find they were off, too short, by about 40%.

Regards,

Dick



On Sep 21, 2007, at 2:54 PM, Ric Carter wrote:

> Maybe they were more comfortable with round than we commonly  
> believe. After all, it's common (and erroneous) knowledge that  
> Columbus was one of the few who believed the world round.
>
> Looking at the picture made me realize that the dry brush filter in  
> PhotoShop may be a good way to simulate heat shimmer.
>
> Interesting photo
>
> ric
>
>
>
>
>
>
> On Sep 21, 2007, at 1:11 PM, Richard Taylor wrote:
>
>> Makes you wonder why any of the ancients thought it could possibly  
>> be flat.
>
>
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