4 ms·
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_rad
by joezydeco 8y ago
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 https://en.wikipedia.org/wiki/Foxhole_radio
- netrap 8y agoThanks for the link. I knew about crystal radios but didn't know about the razor blade technique.
- mmagin 8y agoThere's a remarkable array of ways you can get a crude semiconductor junction. See also https://en.wikipedia.org/wiki/Rusty_bolt_effect https://en.wikipedia.org/wiki/Rusty_bolt_effect