2006-06-06 19:49:59 · 3 answers · asked by saurabhbhatia_millikan 1 in Science & Mathematics ➔ Physics
The prism will have higher reflectivity and lower scatter compared to an aluminized or silvered mirror. Also, there is no coating to degrade.
2006-06-06 20:12:39
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answer #1
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answered by injanier 7
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Prisms are less desirable in fast (
Even for a best mirror, the intensity of reflected light is only 75% of the incident intensity.
In a prism, the light beam is incident normally on the face of the prism. For normal incidence the coefficient of reflection is less than 5%. That is almost, all the light passes through the prism. Further within the prism it is totally and normally reflected. Total normal reflection implies no light is refracted and all the light is reflected with out loss of intensity. The beam emerges normally out of the prism.
Therefore, a prism is a more efficient than a mirror for reflection purposes.
2006-06-07 04:13:03 · answer #2 · answered by Pearlsawme 7 · 0⤊ 0⤋
Because it's a better reflector than any metal,and it doesn't tarnish .
2006-06-07 03:04:59 · answer #3 · answered by zee_prime 6 · 0⤊ 0⤋