This explosive video shows the moment scientists launched more than 1,500 ping pong balls into the air by mixing them with liquid nitrogen.
A large crowd witnessed the visual spectacle as the balls were pinged 20ft high after being poured onto the gas.
The experiment, conducted by Plymouth University, was aimed at inspiring young people about the power of science.
Led by scientist Dr Rory Lowry, it began when a canister of liquid nitrogen was placed in a plastic bin containing warm...
