Shinwari,Mariam,Ivan text:
Law of Reflection
"Reflection is a change in direction of a wave upon striking the interface between two materials."(#1.)
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Refraction is described by Snell's law, which states that for a given pair of media and a wave with a single frequency, the ratio of the sines of the angle of incidence θ1 and angle of refraction θ2 is equivalent to the ratio of phase velocities (v1 / v2) in the two media, or equivalently, to the opposite ratio of the indices of refraction (n2 / n1)(#5#6.):
(#5#6.)
(#5#6.)
Common Example:
Going from a medium of lower refractive index, to a medium of higher refractive index, the beam bends toward the normal. In opposite case, when light travels from a higher refractive index to lower refractive index, the beam bends away from the normal.
(#7.)
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<ac:structured-macro ac:name="anchor" ac:schema-version="1" ac:macro-id="9adcfb461e095fba-a66709e1-4f1743f0-889ea8d4-fa5dafffc551bdb0ad84ad3c"><ac:parameter ac:name="">3.</ac:parameter></ac:structured-macro> 3. _Reflection and Its Importance_. (n.d.). Retrieved December 10, 2012, from Physics Classroom: \[http://www.physicsclassroom.com/class/refln/u13l1c.cfm\] |
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