Lakshmi TripathiDropperSample· 1mo ago
Deriving Snell's law with Huygens' principle: why the tangent, does frequency change in glass, and why no backward wave?
I read Huygens' principle: every point on a wavefront is a source of secondary spherical wavelets, and the new wavefront is the forward envelope of them. NCERT then derives Snell's law for a plane wavefront AB hitting a
