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Before radios were invented, have there always been radio waves floating everywhere in the air? Just waiting to be harnessed and used for a purpose? (self.nostupidquestions)

submitted 1 year ago by LemmyKnowsBest to c/[email protected]

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[–] pennomi 39 points 1 year ago (1 children)

Radio is just a type of invisible light. We don’t have to “harness” a bunch of light waves floating around in the air to power our light bulbs - we make more light directly. Same thing for radio.

Think of it this way. If you want to talk to your friends with flashlights, you can turn them on and off in morse code. Likewise, a cell phone tower is sort of like a big “radio lightbulb” and it blinks really fast to communicate with your phone’s “radio camera”. Your phone translates that blinking it sees into information. (Oversimplified but vaguely how it works.)

[–] [email protected] 4 points 1 year ago

That is the most accurate, and awesome EILI5 explanation of radio I have ever seen before. Outstanding job!