3 ms·
Railroad cars don't have differentials and travel on parallel tracks. How? https://www.reddit.com/r/Skookum/comments/47sbri/richard_feynman_explains_how_a_tra
by JackFr 8mo ago
Railroad cars don't have differentials and travel on parallel tracks. How?
https://www.reddit.com/r/Skookum/comments/47sbri/richard_feynman_explains_how_a_train_can_go/ https://www.reddit.com/r/Skookum/comments/47sbri/richard_fey...