4 ms·
Too lazy to do the calculations my self: How long would a "wire" with 1 m² cross section have to be to have 1 Ohm resistance?
by KeplerBoy 2y ago
Too lazy to do the calculations my self: How long would a "wire" with 1 m² cross section have to be to have 1 Ohm resistance?
- ben_w 2y ago40,000 km, almost exactly
- KeplerBoy 2y agoWow, that's not at all what I would have guessed. I'm an EE engineer who didn't know that this is actually (kind of) feasible.
- ben_w 2y agoIndeed, and likewise (well, the would not have guessed part, I'm not an EE). It seems a really weird coincidence that the circumference of the planet happens to so closely match the resistivity of aluminium and the unit we use for resistance: https://www.wolframalpha.com/input?i=aluminium+resistivity+*+40000km+%2F+1m%5E2 https://www.wolframalpha.com/input?i=aluminium+resistivity+*...
- troupo 2y agoIt's not feasible. You don't need to be an EE engineer to know that.