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

www.physics.yorku.ca/undergrad_programme/highsch/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]

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".