3 ms·
How can one extract usable amounts of power out of sound? Even 100dB SPL has actual power around 1mW/m2.
by ferongr 13y ago
How can one extract usable amounts of power out of sound? Even 100dB SPL has actual power around 1mW/m2.
- keithpeter 13y agoConcentrated beam I imagine. I wonder about heat generation locally.
- ferongr 13y agoIt's more likely that a somehow extremely directional soundwave would knock a phone off the table than provide any appreciable amount of power.
- JoshTriplett 13y agoThe ability to create a directional soundwave powerful enough to move specific objects from across the room would be a highly useful invention of its own, quite aside from remote power charging.
- marshray 13y agoIt's a laptop charger ... and a crowd control device!
- mattdeboard 13y agoWhat if we came up with a way to directly connect the device to the ubeam device? Like some kind of connecting wire through which the energy could travel? THEN we'd have some serious efficiency!