5G20.30 Compass Array

Concepts

Magnetic domain of a magnet

Overview

An array of 24 compass needles (4 x 6) mounted on pivots may be used to demonstrate magnetic domains. Note: this demonstration can be shown on the overhead projector and is appropriate for large lecture halls.

Details

Equipment

  • [1] Compass array
  • [1] Bar magnet

Script

  1. Place the compass array on the overhead projector. Note the direction of the needles.
  2. Place the bar magnet beneath the compass array. Note the direction of the needles.

 

Additional Resources

References

  • PIRA 5G20.30

Disclaimer

  • Don't attempt this at home!

Last revised

  • 2018

Technicals

  • The compass array consists of 24 compass needles (4 x 6) mounted on plexiglass. We have two identical units of compass array

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.