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• Artistic - Reflectivity This result controls the amount of reflection from the normal direction as well as interior bending of the rays. Presets for common materials are provided for you to use.
  
  
• Scientific -  IOR This result controls the amount of ray bending and as a physical effect, the reflection result using the index or refraction. You may recall materials like crown glass and water IOR are 1.5 and 1.33 respectively.

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