Applications of total internal reflection the brilliance of diamond.explain
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Because diamonds have a high index of refraction (about 2.3), the critical angle for the total internal reflection is only about 25 degrees.
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When light passes from one medium into a second, less dense medium, the light bends away from the normal. At a particular incident angle, the angle of refraction will be 90 degrees, and the refracted ray would travel along the boundary between the two media.
The incident angle at which this occurs is called the critical angle. This angle can be calculated by using Snell's Law:
sin(criticle angle) = (n2/n1)(sin 90 degrees) = (n2/n1)
Where n1 = index of refraction in 1st medium
n2 = index of refraction in 2nd medium
If the angle of incidence is increased beyond the critical angle, the light rays will be totally reflected back into the incident medium. This effect is called total internal reflection. But note that total internal reflection cannot occur if light is traveling from a less dense medium to a denser one.
The incident angle at which this occurs is called the critical angle. This angle can be calculated by using Snell's Law:
sin(criticle angle) = (n2/n1)(sin 90 degrees) = (n2/n1)
Where n1 = index of refraction in 1st medium
n2 = index of refraction in 2nd medium
If the angle of incidence is increased beyond the critical angle, the light rays will be totally reflected back into the incident medium. This effect is called total internal reflection. But note that total internal reflection cannot occur if light is traveling from a less dense medium to a denser one.
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