3) The That’s Not Good™ Source: Operation Teapot from 1955 This one is for when you missed the initial explosion but see just a wall of fire heading your direction from the horizon.

The explosion involved a large plastic garbage bin, a bunch of ping pong balls, water and liquid nitrogen. The demonstration shows what happens when the super cold nitrogen is rapidly warmed.

The staff of Whiteside Elementary poured 2,000 pingpong balls into a barrel on Friday, May 24, added water and liquid nitrogen, and produced an explosion with an unforgettable message for ...

A liquid nitrogen explosion makes ping pong balls fly through the air during Snow Week at the Arizona Science Center. David Wallace/ The Republic ...