In other words to power stuff that is a just couple meters away you would need a source so powerful that it would either kill you or all the electronic devices in its vicinity. A nice styropyro video to illustrate youtu.be/6TgrtA2wKaM?t=144
zxqwas@lemmy.world 6 days ago
The energy in a wave is inversely proportional to distance squared. In other words if you double the distance you get one quarter of the power.
For information transfer like wifi this does not matter as long as it’s enough to be detected.
For power transfer this becomes a huge problem quickly because it’s the energy itself that is being transferred.
unexposedhazard@discuss.tchncs.de 6 days ago
FuglyDuck@lemmy.world 6 days ago
It’s also important to note thst the increased power required significantly better cooling- on both devices.
Nikola Tesla did a lot of research on inductive transmission and found it was basically useless for high power and long range. (Interestingly, he wanted to create a shield that would fry anything metallic coming near it. Like artillery shells and airplanes. Besides the power demands being utterly ridiculous, it could have conceivably worked.)
postmateDumbass@lemmy.world 4 days ago
Better use of power than LLMs.