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 a weird result of electricity creating magnetism and magnetism creating electricity. As light moves the the electricity gets stronger, creating the magnetism, and then the magnetism creates the electricity, with the strength of the two alternating in a wavelike fashion.
At least that’s how I understand it like I’m five.
Yhe photons speed is determined by how fast the electricity can cause the magnetism abd vice -versa, which is why you’ll frequently see people weite that the “speedbof light” is really the “speed of causation” or “speed of information”.
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