Why does a crack in a window pane appears silvery
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57
crack in a window pane appear silvery because of following reasons:
1. There is always an amount of air present in the crack.
2. When rays of light travelling through the glass, strike the glass-air interface at an angle, greater than the critical angle of glass, they are totally reflected.
3.When these reflected rays reach our eyes, then to eyes they appear to come from the crack, which in turns appears to be silvery.
1. There is always an amount of air present in the crack.
2. When rays of light travelling through the glass, strike the glass-air interface at an angle, greater than the critical angle of glass, they are totally reflected.
3.When these reflected rays reach our eyes, then to eyes they appear to come from the crack, which in turns appears to be silvery.
koraniriya:
With respect to total internal reflection
Any other answers??
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10
because of light it appears as silvery
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