POV-Ray : Newsgroups : povray.binaries.images : Cavorite Sphere (off the shelf) [~105K JPG] : Re: Cavorite Sphere (off the shelf) [~105K JPG] Server Time
11 Aug 2024 13:20:23 EDT (-0400)
  Re: Cavorite Sphere (off the shelf) [~105K JPG]  
From: Dan P
Date: 19 Apr 2004 23:28:46
Message: <408498ee$1@news.povray.org>
Christopher James Huff wrote:

> In article <4081ceec$1@news.povray.org>,
>  Dan P <dan### [at] yahoocom> wrote:
> 
> 
>>>The Earth doesn't really add anything by radiosity alone so I'll add a light
>>>source to it.
>>
>>Right; it's too far away.
> 
> Distance has little to do with it, it is the area of sky covered and 
> brightness per unit area that counts. The diameter is about 3.6 times 
> that of the moon, the sky area covered is almost 13.5 times greater. The 
> moon's albedo is less than Earth's, between 7% and 12% compared to 30%. 
> (The lunar surface reflects light preferentially in the direction it 
> came from, so it appears brighter when nearly full.)

I must be misunderstanding radiosity -- I figured because it was so far 
away, it wasn't close enough to the moon to reflect any light to it 
because of fall-off.

<snip/>
-- 
Respectfully,
Dan P
http://<broken link>


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