Wireless

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It worx

We already do, you dolt

>>8494607
We can, just most of it is lost along the way.

power transmits at 1/r^2 , just the fact that we're getting so much power from the sun which is fucking far away should tell you how much insane amount of power that ball of fusion is generating.

>109x Earth radius
>5,505 °C surface temperature
>average Earth surface temperature is 14° C

fug why don't we make something gigantic to transmit power with 0.002543142% efficiency like the sun lmao space is awesome dude

>>8494742
The sun is radiating in all directions though. Something like a laser would be much more efficient.

>>8494647
Do your radio receive energy via radio waves? Or do you plug it in a AC source?

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>>8494750
RFIDs do, they even transmit without having a power supply of their own.

>>8494607
There are technologies emerging that do exactly that. The most important problem is efficiency. You lose a lot along the way and conversion is not exactly great (<20% at the receiver mostly). So in the end you have just a few percent of the energy you put in. For most applications that is unacceptable. It might be okay for super low power devices, like clocks, but even then you are mostly better off with just using batteries.

>>8494750
basic radio receivers do receive at least some energy via radio waves.
https://en.wikipedia.org/wiki/Crystal_radio

>>8494771
AFAIK they don't transmit, but put a sort of modulated dummy load onto the RF signal. The transmitter can then sense the dip in power of the signal.

Google "Royer converter". I use it to make energy available at electraomagnetic levitatet magnets

>>8494771
>RFID tags can be either passive, active or battery-assisted passive. An active tag has an on-board battery and periodically transmits its ID signal. A battery-assisted passive (BAP) has a small battery on board and is activated when in the presence of an RFID reader. A passive tag is cheaper and smaller because it has no battery; instead, the tag uses the radio energy transmitted by the reader. However, to operate a passive tag, it must be illuminated with a power level roughly a thousand times stronger than for signal transmission.

>mfw needs to improve wikifu anon does