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Refraction of light

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jamesy boy | 16:25 Sun 22nd May 2005 | Science
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If light hits glass at an angle of about 100 degrees, what happens? Will it be reflected, or refracted, and how?
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Some light will be reflected, and the remaining light which passes through the glass will be refracted as explained here
I presume that by 100� you mean 10� off normal (i.e 90�).

As kempie says, the angle of incidence can only be in the range 0 - 90�.

However, as an example, in my aquarium the sand/gravel substrate is 'illuminated' from the top surface down to about �" / 1.5cm-ish depth. This is irrespective of the total depth of the gravel, as the 'illumination' follows the contours.

This is due to internal reflection within the glass.

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Refraction of light

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