Comment on Researcher has developed, at a cost of less than one dollar, a wireless light switch that runs without batteries, can be installed anywhere on a wall and could reduce the cost of wiring a house by ...

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luthis@lemmy.nz ⁨11⁩ ⁨months⁩ ago

It is totally possible to harvest energy from radio waves, it’s just such a tiny amount that you could barely light a LED

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