Liquid N2 + ping pong balls + hi-speed cam = SLOMO boomhappy funtime

While it definitely lacks the low-budget charm of this nearly identical classroom presentation, this demonstration of liquid nitrogen's explosive potential does have two major things going for it. One: more ping pong balls. Two: A high-speed camera, for slowmo playback goodness. » 9/13/13 10:14am 9/13/13 10:14am

Scientist + liquid nitrogen + 1500 ping pong balls = boomhappy funtime

Come for the science, stay for the explosions. Watch Plymouth University professor Roy Lowry* demonstrate what happens when you try to contain liquid nitrogen while it's returning to its gaseous state. (The impatient among you can skip to 3:15.) » 9/19/12 1:30pm 9/19/12 1:30pm