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What is Interference Color in Optical Mineralogy about?
An anisotropic mineral displays interference colors between crossed polarizers due to double refraction splitting light into fast and slow rays with different velocities. The difference in optical path lengths between the rays causes retardation that is dependent on mineral thickness and birefringence. Retardation results in either constructive or destructive interference of the recombined rays, producing different colors. Interference color charts allow determination of retardation and birefringence from t
- Author
- Shanmugasundharam Arumugam
- Language
- EN