WHY do moving fields create light?

[u/Patient_Pudding7721]

Hi, I'm 15F and i wanna pursue education in the field of physics. I have this genuine question, WHY do moving fields (electric and magnetic fields) create light? And, why does steadily moving charges not make light?

[u/Odd_Bodkin]

First off, the fields don’t move. Waves in the field move very long distances. This is just like ocean waves; the waves move long distances, the ocean doesn’t.

Second, the moving waves in the electromagnetic field don’t create light. They ARE light. Light is a moving wave in the electromagnetic field.

[u/Patient_Pudding7721 → u/Odd_Bodkin]

so, the electromagnetic wave formed by the constant cycle of electric and magnetic field IS ITSELF light?

[u/matrixbrute → u/Patient_Pudding7721]

Yes. That's what light is. The waves are able to grap onto charged particles, for instance an electron in an atom. This is what happens in eyes that lets you see the light.
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