how the snell's law come?

3.14lwy

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!

spacetime

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

Or you can just solve Maxwell's equations with appropriate boundary conditions.

Claude.

snbose

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".