how the snell's law come?


by 3.14lwy
Tags: snell
3.14lwy
3.14lwy is offline
#1
Oct20-04, 07:26 AM
P: 15
what is the snell's law?

and how to show this
n = sin(i)/sin(r)

(where
n = refractive index
i = angle of incident
r = angle of refraction )
??

thank you!
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spacetime
spacetime is offline
#2
Oct20-04, 07:41 AM
P: 119
You can derive snell's law from Fermat's principle of least time

http://www.physics.yorku.ca/undergra...ch/SNELL3.html

Another derivation can be done using Huygen's principle.



spacetime
www.geocities.com/physics_all/index.html
Claude Bile
Claude Bile is offline
#3
Oct20-04, 08:51 PM
Sci Advisor
P: 1,465
Or you can just solve Maxwell's equations with appropriate boundary conditions.

Claude.

snbose
snbose is offline
#4
Oct21-04, 12:04 AM
P: 19

how the snell's law come?


Quote Quote by Claude Bile
Or you can just solve Maxwell's equations with appropriate boundary conditions.

Claude.
Righto!!!

Maxwell's equations on EM Waves will provide the most elegent proof of Snells Law, Laws of Reflection and all the rest. You can read it from David Griffits "Intro ...to Electrodynamics".


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