Don’t waves need a medium to travel through? Isn’t space just essentially empty? I know they’re electromagnetic waves, but what does that mean essentially?
Edit: Thanks for the response guys. From your response I’ve realised there’s no way to explain to a 5 year old how light works!
In: Physics
light is both a wave and a particle. think of a wave packet, a wave that is suppressed by a bell curve. in this picture, light is an excitation of the photon field, often written as A. the photon field expands throughout all of space and time. since the photon field is connected to electric and magnetic fields, the speed of light is connected to their vacuum permeability ε and µ.
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