Wednesday, 14 March 2012

Reflection and refraction of colored light


Reflection and refraction of coloured light in water 

air surface 2, varying incidence angle








Light propagating in water reaches a plane surface separating water from air. A fraction of light reflects back and the remaining fraction refracts to air. As the incident angle goes up more and more light reflects until the critical angle is reached. For angles of incident greater than the critical angle all the light reaching the surface reflects (total internal reflection).

Some colored filters are glued at the orifices. The original light from this apparatus is white halogen.

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