4C40.10 Dry Ice Rocker

Concepts

Sublimation of dry ice

Overview

A quarter set in a block of dry ice rocks back and forth due to subliming carbon dioxide flowing past it.

Details

Equipment

  • [1] Level block of dry ice
  • [1] Quarter
  • [1] Microphone
  • [1] Camera

Safety Equipment

  • [1] Safety goggles
  • [2] Safety glove

Classroom Assembly

  1. Focus the camera on dry ice.
  2. Set up the microphone.

Important Notes

  • Dry ice can cause severe burns and blindness. Do not use in spaces with bad ventilation. Use with caution.

Script

  1. Put on your safety goggles and gloves.
  2. Firmly push the room-temperature quarter into the dry ice, edge-on. Enough dry ice should sublime away to make a shallow groove in the dry ice. Do not go too deeply.
  3. When you let go of the quarter, it should rock back and forth. Catch the sounds with the microphone.

 

Additional Resources

References

  • PIRA 4C40.10
  • YouTube video of the demo here

Disclaimer

  • Don't attempt this at home!

Last revised

  • 2020

Technicals

Related AV

Related demos

 

If you have any questions about the demos or notes you would like to add to this page, contact Ricky Chu at ricky_chu AT sfu DOT ca.