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3
questions
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0
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Photon momentum in Snell's law of refraction
In the drivation of Snell's law for light as EM waves, we have the wave vector components parallel to the interface $k1\parallel$ = $k2\parallel$ as shown in the picture.
From $k_{1x} = k_{2x}$, we ...
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7
votes
2
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Can you touch something which is massless?
Can one touch massless things? If not then why the light get scattered by the tiny particles present in air? If light is massless how can it hit particles or dust to get scattered?
$$**OR**$$
The ...
- 807
11
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3
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Photon energy - momentum in matter
$E = h\nu$ and $P = h\nu/c$ in vacuum.
If a photon enters water, its frequency $\nu$ doesn't change.
What are its energy and momentum: $h\nu$ and $h\nu/c$ ?
Since part of its energy and momentum have ...
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