This following applet is [b]Intensity of reflected light and index of refraction[/b]
Created by prof Hwang Modified by Ahmed
Original project [url=http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=205.0]Intensity of reflected light and index of refraction[/url]

For normal incident light from air to glass, only 4% light were reflected.
I=(n1-n2)2/(n1+n2)2=(1-1.5)2/(1+1.5)2=1/25=4%
The intensity of reflected light changed with index of refraction and the incident angle.

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