Comment on Light-Speed Spaceships Would Have Trouble Phoning Home
ultra@feddit.ro 11 months agoJesus Christ, why’d this get so downvoted? Do people not get sarcasm?
Comment on Light-Speed Spaceships Would Have Trouble Phoning Home
ultra@feddit.ro 11 months agoJesus Christ, why’d this get so downvoted? Do people not get sarcasm?
ExLisper@linux.community 11 months ago
I was actually wander what would happen if you would just put a big rod of metal in 0 g and pushed it? If one end shifts 1 cm, how long would it take for the other end to also shift? Wouldn’t that be instant? Well, apparently the signal would travel at the speed of sound. Which is weird, right? It makes sense but it’s still weird.
luthis@lemmy.nz 11 months ago
It’s mechanical, so each atom is pushing against the ones immediately next to it, and so on, until other end moves.
It would be interesting to work out how much a metal bar the length of our solar system would compress when you push it…