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Waves are disturbances that propagate through space and time. Classically, they travelled through a medium, disturbing the particles but not changing their mean position. Electromagnetic waves/particle-waves need no medium; they are disturbances in their respective fields.

29 votes
6 answers
12k views

Do the electric and magnetic components of an electromagnetic wave really generate each other?

Frequently when EM waves are taught, it is said that the change in electric field causes a change in the magnetic field, which then causes a change in the electric field, and so on and so forth. …
Sam D20's user avatar
  • 555
5 votes
3 answers
959 views

This electromagnetic wave diagram doesn't make sense to me

I am attempting to learn about electromagnetic waves. … I later ran into this diagram, which agrees much more with my illustration: Are the waves in these two diagrams representing different things? Is one of them wrong? Where am I mistaken? …
Sam D20's user avatar
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