3 ms·
We had a neighbor that put loops of wire under a 600kV line and got enough power to run a water pump for cows. The square law makes that kind of thing pretty l
by ikidd 9mo ago
We had a neighbor that put loops of wire under a 600kV line and got enough power to run a water pump for cows. The square law makes that kind of thing pretty low-return.
- toss1 9mo agoHere's some calculations on the return [0] (usual caveats of stuff found on the internet). Quite low returns indeed! [0] https://user.physics.unc.edu/~deardorf/phys25/rwp/exam1rwpsolution.html https://user.physics.unc.edu/~deardorf/phys25/rwp/exam1rwpso...
- ikidd 9mo agoYah, he was just running a 12V bilge pump on a battery, and used a charge controller to keep the battery up so just needed a voltage slightly above the battery voltage. I doubt it used a kWh per day as it cycled. He might still be using it, haven't talked to him in a few years.
- gmiller123456 9mo agoThe Mythbusters also tried it in the "Free Energy" episode. They pretty much said extracting any useful amount of energy is not worth the effort.