檢視 Lamb 的原始碼

=='''Format'''==
 Lamb // float

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The probability of a surface emitting light ray according to Lambertian cosine law. The number of photons emit in a solid angle <math>d\Omega </math> is proportional to <math>\cos(\theta)</math>, where <math>\theta</math> is the angle between the wave vector of a light ray and the normal vector of the emission surface.
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=='''Example'''==
 #Lamb
 SurfEmit
 Shell 1 
 1.00000

The probability is 100%.