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809

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[–] 3 pts

Wait until you learn that AM radio can broadcast in metal structures without an additional power source, such as heavy steel ventilation ducts in old houses.

The metal acts as a receiver and the shape makes it a speaker.

Or this. https://en.wikipedia.org/wiki/Crystal_radio https://old.reddit.com/r/todayilearned/comments/39vwxg/til_that_near_the_1940s_it_was_popular_to_build/

[–] 1 pt

That's pretty dope.

So I can hook up an AM radio in a commercial building and broadcast some tinny shitpost throughout?

[–] 0 pt

Nah, it doesn't work like that. It's a weird phenmenon. It only happens sometimes when the circumstances are just right. I used to rent a basement in Appalachia and every once in a while this would happen.

[–] 1 pt

Ok probably a resonance frequency deal

[–] 2 pts

Energy harvesting has been a thing for a long time, there are even specialized chips for it. It's not going to power something like your phone or even your watch, but it will power a sensor package that blasts a packet every now and then.

[–] 0 pt

WiFi creeps me out.