this post was submitted on 04 Feb 2024
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Technology

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139
Scientists Develop New Dirt-Powered Fuel Cell That Runs Forever (scitechdaily.com)
submitted 9 months ago by machinin@lemmy.world to c/technology@lemmy.world
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Northwestern University researchers have introduced a soil-microbe-powered fuel cell, significantly outperforming similar technologies and providing a sustainable solution for powering low-energy devices.

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[–] muntedcrocodile@lemmy.world 14 points 9 months ago

Im pretty sure most soil moisture measurment devices just measure the capacitance to measure dielectric permittivity. U can design such a setup to use any arbitrary amount of power depending how close the electrodes are rogether etc etc.