how radio waves are broadcast out of an antenna.
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Find a thing, bendy wire/stick/thing. Something that you can shake really quick and make it vibrate.
Vibrate the “thing” as close to a constant frequency. You will notice that there are points (nodes) that stay in place, and other parts that move at a maximum distance.
You can change the distance between nodes and other aspects by changing the frequency you shake it, or the material it’s made of.
This is *somewhat* analogous to RF radiation. The frequency moves down the antenna and bounces back at the end. This forms electromagnetic nodes along the antenna. The points of maximum movements is where the actual radiation happens; throwing off photons at those points that have the same frequency.
Also, I’m pretty sure RF propagation is like, 10% Voodoo.
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