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Chemomechanics t1_j8zh6u2 wrote

Reply to comment by Fallacy_Spotted in Does refracting light impart momentum onto the object that is refracting it, for the duration of the refraction? by TheFeshy

The frequency is the same everywhere. (The easiest way to see this may be to note that the electric and magnetic fields must be in sync everywhere, including the interfaces.)

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Fallacy_Spotted t1_j8zhju8 wrote

The light must give some of its energy to the medium so if the frequency doesn't change then where does this energy come from.

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Chemomechanics t1_j8zi3qy wrote

Well, what's different about monochromatic light that's passed through a filter?

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Fallacy_Spotted t1_j8zjks2 wrote

I don't know. I am a normal dude in IT that spends too much time on the internet. I have a middling understanding of this stuff and am curious. If a refractory medium like a lens behaves differently than a filter that would be interesting. 😁

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Chemomechanics t1_j8znwgn wrote

I was just looking for “It’s dimmer.” That’s what provides the energy that’s absorbed in the medium, not any change in frequency.

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