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!
In: 87
Have you seen people doing ‘la ola’ in stadium ?
Where everybody stands up then sits down in turns. We cannot really say that any person physically moved. But something happened.
It is the information that moved, (and physicist will call that the perturbation from the initial state) and it has properties.
That’s what a wave is. Now you know what a disturbance in the force might feel like.
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