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0 votes
1 answer
50 views

What does the wave created during refraction look like?

People always describe refraction as light stimulating the electrons in the glass, which create their own light, which interferes with the original wave. They always say “the math is too complex, but ...
gbe's user avatar
  • 103
2 votes
2 answers
779 views

Wavefronts, refraction, and the marching soldiers analogy

I am not a physicist, but rather a middle school science teacher. Please be gentle. The marching soldiers has been a really good analogy for explaining why a change of direction is caused by hitting ...
AMG's user avatar
  • 43
1 vote
0 answers
28 views

Path a photon or phonon takes in a moving medium

Lets say we have a medium with refractive index n whose velocity is given as a function of height. $v_x(y)=ay$ How would we go about finding the motion of a photon or phonon in this space from the ...
Laff70's user avatar
  • 780
2 votes
1 answer
94 views

Why does light behave according to the left picture and not according to the right?

Light changes its speed, because the new medium is either more, or less dense; but why does it change direction?
Aaaa Bbbb's user avatar
2 votes
3 answers
2k views

Reconciling refraction with particle theory and wave theory

I have searched the web for good answers to why refraction occurs when light moves from one medium to another with different density. I have limited background in physics and want to know if there is ...
Glenn Bech's user avatar