Overview[edit | edit source]
In this experiment, corks are launched out of a tube using liquid nitrogen pressure.
Safety[edit | edit source]
Safety Class[edit | edit source]
Very dangerous (Should only be attempted after careful training)
Required Safety Equipment[edit | edit source]
- The show performer: Glasses and Cryogenic gloves
Materials[edit | edit source]
- Corks (real ones, not the plastic ones)
- Tube which is closed on one end
- Liquid nitrogen
Procedure[edit | edit source]
Put the liquid nitrogen into the tube. Take a cork and hammer it down the tube. Wait for a while, and the cork will launch itself off.
Alternative methods[edit | edit source]
Some people use a plastic bottle instead of a tube. This is more dangerous, because the plastic bottle is less strong.
Dangers[edit | edit source]
- Make sure you always hold the tube while the cork is on (to prevent it from falling over)
- Make sure you always hit the cork only once. If you try to hit it a second time, it might launch itself while you are hitting it, hit the hammer, and fly into the audience.
Other Factors[edit | edit source]
This experiment does not work if the tube is too cold. Never do this experiment twice in a row with the same tube.
Explanation[edit | edit source]
What's taking place[edit | edit source]
The gas in the tube evaporates, and when the pressure is high enough, the cork is pushed out.
In the real world[edit | edit source]
Cannon work like this, only instead of evaporation they use a chemical reaction to produce gas.
Acknowledgements[edit | edit source]
Experiment developed by Stichting Rino
Page made possible by EuroPhysicsFun
- Links to this guide in other languages: English.