4 ms·
Just use salt water? It's even cheaper and more shelf-stable than potato, and there's quite a lot of it on the planet.
by jacknews 6y ago
Just use salt water?
It's even cheaper and more shelf-stable than potato, and there's quite a lot of it on the planet.
- foobar33333 6y agoOr just use a solar panel. I'm sure with a battery, a single panel could light up my room perpetually.
- kseistrup 6y agoA solar panel may not be economically possible for many people in say Africa.
- foobar33333 6y agoA single solar panel should last you at least 10 years. How much does a 10 year supply of copper and zinc plates cost? I think you would have to stretch to insane lengths to find any case where this kind of power source is economical, sustainable or logical.
- kseistrup 6y agoI have friends who live in shanty towns in Zambia. I can guarantee you that they will be unable to shell out for a solar panel — even if it lasts for 10 years. I don't know about zinc, but copper is plentiful (in fact, they both live in the Copperbelt Province) and they don't have to pay for all 10 years of copper and zinc in one instalment.