3 ms·
Since they operated directly under the wires, I think this is clearly a near field. Generating power from far fields does not seem likely to get any meaningful
by lukan 3y ago
Since they operated directly under the wires, I think this is clearly a near field.
Generating power from far fields does not seem likely to get any meaningful yield. I remember my father showing me how to build a passive radio receiver using a strong sender nearby and it worked. No other power source involved but you could listen to the (weak) output. So in theory possible, but not really useful.
- DamonHD 3y agoThe earliest radio receivers that I built as a kid were entirely passive, eg a tuned circuit and a diode, and the captured energy was enough to drive a ('crystal') earpiece. I was many many (tens/hundreds of) miles from the transmitters.