I really can’t grasp the concept of waves. I can imagine it a bit for sound waves: a speaker has a surface that pushes air, and the moving air eventually pushes the membrane in our ears.
But I’m confused about wifi etc. What exactly is the thing that physically travels? Is it air or something else? Does it physically move in a wavy pattern?
Edit: thanks for all the answers! But damn I’m overwhelmed. It’s gonna take me days to read and fully understand the answers. But thanks!
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It propagate thru Space itself. Space is not empty place, it have Its own energy level And it never goes to absolute zero temperature And stays on ~2°K, it very much looks like sound wave, but you should know the molecules of air dont travel with the sound wave. Take long straight rope And Swish with one end, the rope Will form wave which travel on the rope, rope in this case can be air for sound Waves And/or Space for energy Waves. Also every energy Wave Is same as visible light, you just can’t see it. From physics perspective visible light, UV, radio, WiFi, microwave, etc. Is the same thing with different frequency.
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