When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: dwphotos Getty Images Centripetal and centrifugal forces are two terms used to describe ...

Have you ever thrown your spare change into a coin vortex like the one we used to have in the gift shop at ECHO? When you put a coin in this, the coin spins around and around until eventually it ...

When humanity first started studying motion, circles posed a peculiar puzzle. Why do planets sweep endlessly around the Sun without flying off into the void of space? Why does a stone swung on a ...