5K10.25 Inductive Coil with Lamp (Shake Flashlight, Forever Flashlight)
Electromagnetic induction, conservation of energy
As the flashlight is shaken, a magnet passes through a coil of wire connected to an LED, which illuminates.
-  Shake flashlight
- Dim the lights.
- Hold the flashlight horizontally and shake it so the magnet moves through the coil. Shine the light at the audience.
- PIRA 5K10.25
- Don't attempt this at home!
- Original construction: purchased. The flashlight has had its capacitor and on/off switch removed so that the magnet and coil directly connect to the flashlight bulb.
- Hand Crank Flashlight
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.