wireless communication. How does the signal know where to go? How is data transmitted through air?
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The same way light knows where to go when you turn on a light bulb. It doesn’t first scan the room and go “there’s a guy reading over there, we’d better send some light his way”. It just goes all over the place, lighting the entire room. It’s not really directed at all.
In some cases you may have directional antennae, but that just works something like a flashlight: light is sent in *that* general direction, but again, not guided towards any *specific* object or receiver.
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