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
Just wanted to add some cool trivia on the subject since you have your answers.
From the time of the Greek philosophers until the experiments between 1890 and the 1920s showed otherwise, it was thought the empty parts of the Universe were filled with an invisible substance called the ether or aether. The luminiferous ether was the substance waves of light were said to propagate through.
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