On Tue, 23 Oct 2001 12:32:19 -0400, Timothy R. Cook wrote:
> Kari Kivisalo wrote:
>> Surface properties are irrelevant, only the emitted energy matters.
> 
> It's the surface properties which determine the emitted energy.
> 
>> Put a sample of linoleum in a test bench and measure its
>> photometric brightness at various distances. It will take a
>> material considerably more exotic than linoleum to break the
>> laws of physics :)
> 
> Take a chair, set it on a linoleum floor, then look at its
> reflection.  You don't see the entire chair.

Some of that is Fresnel reflection.  Some of it is blurred reflection.  
None of it is the inverse-square law.

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