Why can't light go thru solids?

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Light cannot pass through most solids due to interactions with the atomic lattice, where photons are absorbed and re-emitted, causing delays in their travel. In contrast, many liquids allow photons to pass because their molecular structure does not impede light in the same way. The energy from absorbed photons is transferred into lattice vibrations, known as phonons, while the photon is effectively "waiting" to be re-emitted. The discussion raises questions about the transparency of liquids to different parts of the light spectrum compared to solids. Overall, the complexities of optical conductivity and atomic interactions play a crucial role in light's behavior in various materials.
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With the huge distances between atoms, relative to the size of the atoms, why aren’t photon packets able to travel through most “solids”? Why are those same photon packets able to travel through many liquids?
 
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I found your question interesting quantumh20.
Sorry I don't have an answer for you just another question because of your question.
Are transparent liquids non-transparent to a different part of the spectrum than solids?
 
quantumh2o said:
With the huge distances between atoms, relative to the size of the atoms, why aren’t photon packets able to travel through most “solids”? Why are those same photon packets able to travel through many liquids?

You might want to start by reading one of the FAQ entry in this forum (General Physics) on photon transport in matter. It is a "start", since there are many other factors involved in optical conductivity in solids.

Zz.
 
"On the other hand, if a photon has an energy beyond the phonon spectrum, then while it can still cause a disturbance of the lattice ions, the solid cannot sustain this vibration, because the phonon mode isn't available. ... So the lattice does not absorb this photon and it is re-emitted but with a very slight delay. This, naively, is the origin of the apparent slowdown of the light speed in the material. The emitted photon may encounter other lattice ions as it makes its way through the material and this accumulate the delay."

Where does the photon go while it is waiting to be 're-emitted'?
 
The energy goes into vibrations of the solid (phonons) while it's "waiting".
 
Thanks.
Sounds similar to the action with electrons.
Is it? Does it mean, in a similar vein, that the photon disappears and a new photon is emitted with each interaction; as it does when an electron absorbs the photons energy and gains that energy? Or is that not right? I'm still not sure where your answer is on this even with your explanation I apologise.
 
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