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@ the eyepoint
@ the EyePoint
The Michel-Lévy Interference Color Chart – Microscopy’s Magical Color
Key
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John Gustav Delly, Scientific Advisor, Hooke College of Applied Sciences, Westmont, IL |
Bausch & Lomb
Optical Company issued a “Michel-Lévy Scale of Birefringence” (Figure
19) which was adapted from the one in the 1942 second edition of Roger
and Kerr’s Optical Mineralogy (24); the mineral names have
been left off of the Bausch & Lomb version.
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click image to view large PDF version (779K) 
figure
19
click image to view large PDF version (647K) 
figure
20
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The 1985 second edition
of Shelley’s book on Optical Mineralogy (27) is both memorable
and striking, not so much for its “Interference Color Chart” (Figure
20), as for the fact that the book’s cover has a wrap-around interference
color chart (Figure 21).
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figure 21
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