lab1 - Object To study the refraction and reflection of...

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Object To study the refraction and reflection of light at plane surfaces Theory Experience show that whenever light strikes the interface between two different materials, some of the light is turned back (reflection) while part of the light is transmitted after undergoing an abrupt bending of angle (refraction). The amount of bending refraction seems to depend in some way on the fact that the velocity of light is in the two materials. Path of incident, reflected and refracted light rays when a discontinuity is encountered. When < , v2 v1 bending toward the normal ( < Ѳ2 Ѳ1), and when > v2 v1, bending away from the normal > Ѳ2 Ѳ1. Velocity of light in various materials are indexed according to how they compare with the velocity of light in vacuum (c = . × 2 9979 108 m/s) according to , ( ) = ( ) ( n index of refraction c velocity of light invacuum v velocity of light in ) material (1) Since the velocity of light in a material substance is less than that in vacuum, the index of refraction is always greater than one: n≥1. Observation further indicates that the incident ray, the normal, the reflected and refracted ray all lie in the same plane. In this plane simple relationships between the angles in the reflection and refraction of the rays can be found to exist. =
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This note was uploaded on 10/19/2010 for the course PHYSICS phy 222 taught by Professor Dr during the Spring '10 term at Bergen Community College.

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lab1 - Object To study the refraction and reflection of...

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