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Vision.  Psychology 217   Email questions answered.  Spring, 2012
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Subject: Re: Mirrors vs lambertian surfaces
Date: Wed, 25 Jan 2012 23:37:05 -0800
From: George Sperling 
To: Howard 
CC: howary1@uci.edu, George Sperling 

Hi Howard -
     I presume you're asking about the HW.

	If a mirror is kept clean, you should not be aware of the 
	surface of the mirror.  A mirror merely directs sources of light 
	from a different place (than the extension of the ray entering 
	your eye) into your eye as if those places were at the extension 
	of the ray.

	A partially reflective mirror redirects only a portion 
	of the light from a different place into your eye, the rest 
	travels through the mirror as if it were a (partially) transparent 
	sheet of glass.

	George

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				On 1/25/12 7:53 PM, Howard wrote:
				> Hi George,
				>
				> Unlike how you approach lambertian surfaces, for mirror luminance
				> do you take candle power, multiply by reflectance and not divide
				> by pi?
				>
				> Just making sure.
				>
				> Howard


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