You jest, but https://physics.stackexchange.com/questions/9615/why-do-power-lines-sag-when-they-are-heated-up#9617 https://physics.stackexchange.com/questions/

You jest, but https://physics.stackexchange.com/questions/9615/why-do-power-lines-sag-when-they-are-heated-up#9617 https://physics.stackexchange.com/questions/9615/why-do-powe...