Is the Photon Riding on an Electromagnetic Wave?

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SUMMARY

The photon and the electromagnetic wave represent the same physical phenomenon but are analyzed through different frameworks. Photons are quantized units of the electromagnetic field, while electromagnetic waves describe the field's behavior. Both descriptions are useful in different contexts, and quantum electrodynamics is necessary when neither framework suffices. Understanding this relationship is crucial for grasping fundamental concepts in physics.

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  • Basic knowledge of quantum electrodynamics
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amateurphysiker
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Hi there,

I was wondering what the relationship between the photon and the electromagnetic wave is? Is the photon traveling on that wave like a surfer is riding a wave? :-)

Thanks in advance!
 
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No. Photons and the electromagnetic wave refer to the same phenomenon, but analyzed with different mechanics. You could say that the electromagnetic field is made up of photons, or the photons are quanta of the electromagnetic field. But these are just words that don't capture the intricacies of the math. Whenever an electromagnetic field interacts with something, it transfers a discrete amount of energy, angular momentum, and momentum. So we call a unit a photon.
 
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amateurphysiker said:
Is the photon traveling on that wave like a surfer is riding a wave? :-)
No. Photons don't even have a meaningful position.

Electromagnetic waves can be described with photons. It is an alternative description for the same thing. Sometimes waves are a more useful description, sometimes photons are more useful, sometimes both don't work and you have to use quantum electrodynamics, which combines both approaches.
 

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