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does gen crystal reflect rainbow under the light?


Erict719

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Different types of "plastic" have different indexes of refraction.  The higher the index (and arguably the higher the quality) the more the refraction. 

 

So a high quality/index "plastic" will show more "rainbows" due to refraction than a lower quality/index "plastic."

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It gets even weirder than this.  It's at the light boundaries where refraction occurs.  So air/glass refracts, then again on the other side where the glass/air interface is.  If you had two layers of glass you'd have refraction as glass/air/glass/air (out the back side).  There are also minor internal refractions from the "inside" face of the glass/air boundary back into the glass.  You can get some crazy moire' patterns that way.

 

Try looking at your crystal under a polarizing filter.  It's better than Andy Warhol and root beer.

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