There's a whole generation of kids that haven't built a razor blade diode / foxh... | Hacker News

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		joezydeco on Jan 31, 2019 \| parent \| context \| favorite \| on: Converting Wi-Fi signals to electricity with new 2... There's a whole generation of kids that haven't built a razor blade diode / foxhole radio. That's a fun thing to do. https://en.wikipedia.org/wiki/Foxhole_radio

netrap on Jan 31, 2019 [–]

Thanks for the link. I knew about crystal radios but didn't know about the razor blade technique.

_wiv7 on Jan 31, 2019 | [–]

There's a remarkable array of ways you can get a crude semiconductor junction. See also https://en.wikipedia.org/wiki/Rusty_bolt_effect

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