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Table of Contents
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General Terms 2

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Analytic sampling 
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AnalyticSampling
AnalyticSampling

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The index of refraction is defined as the speed of light in vacuum divided by the speed of light in a given medium. IOR = C/V, where V is the light speed specific for the different mediums.
3ds Max: To achieve a material with a specific IOR, you have to set the Index of refraction field value in Max's standard materials in the section Extended parameters.

 

MaterialIndex
Vacuum1.00000
Air at STP1.00029
Ice1.31
Water at 20 C1.33
Acetone1.36
Ethyl alcohol1.36
Sugar solution(30%)1.38
Fluorite1.433
Fused quartz1.46
Glycerin1.473
Sugar solution (80%)1.49
Typical crown glass1.52
Crown glasses1.52-1.62
Spectacle crown, C-11.523
Sodium chloride1.54
Polystyrene1.55-1.59
Carbon disulfide1.63
Flint glasses1.57-1.75
Heavy flint glass1.65
Extra dense flint, EDF-31.7200
Methylene iodide1.74
Sapphire1.77
Heaviest flint glass1.89
Diamond2.417

 

Indirect Illumination (Global lighting, Global Illumination, GI)
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IndirectIllumination
IndirectIllumination

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