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authorBryan Newbold <bnewbold@archive.org>2020-06-27 17:05:42 -0700
committerBryan Newbold <bnewbold@archive.org>2020-06-27 17:05:42 -0700
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add notes from April 2020
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+
+; http://hyperphysics.phy-astr.gsu.edu/hbase/geoopt/refr.html
+
+(eq nu (/ c v))
+
+(var nu "index of refraction")
+(var c "velocity of light in vacuum")
+(var v "velocity of light in the medium")
+
+; Material examples for nu:
+; Vacuum 1.000
+; Air 1.000277
+; Water 4/3
+; Ice 1.31
+; Crown glass 1.50 to 1.62