Question
Thu February 14, 2013 By: Yogiraj Karambelkar
 

Why does a Diamond Sparkle?

Expert Reply
Fri February 15, 2013
Its due to Total internal reflection , TIR.When the light rays enter diamond it acts as a prism and disperses the light in its seven constituent colours and after when these colours strike the others surface of diamond TIR takes place and then after emerging the white light again combines into white light and we see the diamonds as if they are sparkling
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