High Pressure Science!

How does one restore a steel drum to its original shape after radically deforming it? We filled the bottom of the barrel with dry ice - solid CO2 - and added water to hasten the CO2's sublimation into gas.

Carbon dioxide undergoes an 800 times expansion when shifting from a solid to a gas, so enormous pressure builds up inside the steel drum, forcing it to expand into its full size!

Stay tuned for more uplifting science!

2007 Adrik McIlroy/Frogwatcher Media