When you drop a Slinky, what falls to the ground first: the top, the bottom, or everything all at once?
At the Google Science Fair on Monday, which Muller hosted, he repeated this demonstration on stage — and also with a giant, rainbow-colored Slinky he dropped from the top of the Googleplex.
So which is it? The result may surprise you.
First, make your bets on what you think will happen.