In an experiment, one tube produced 440 microwatts. When the researchers used four tubes at once, they could power 12 LEDs for 20 seconds.
In an experiment, one tube produced 440 microwatts. When the researchers used four tubes at once, they could power 12 LEDs for 20 seconds.
Remarkably, I was just reading some old xkcd "What If"s during lunch, when I happened across this one (third question).
tl;dr: at 2012 energy costs (and assuming perfectly efficient turbines), capturing kinetic energy for electricity on a house’s footprint in the rainiest place in the US takes about a century to be worth the cost of manufacturing and installing it. That’s in the best-case scenario.
Edit: turns out OP’s article is about charge separation, not driving turbines.
I can’t replicate the findings of that equation even after doing the omitted conversion from ft²×m to L. That said I don’t understand what the unit of energy even means from its SI conversion lol, so obviously don’t take my word over that of a rocket scientist.