The world's simplest electronic train
An electro-train made of battery, magnets and copper wire
Online since: 20/05/2015,
Number of visits: 868933
3
Table of Contents
Material needed
- 2 neodymium disc magnets 15 x 8 mm
- Batteries (our recommendation: several AA LR6 with 1,5 Volt)
- 1 roll copper wire (30-50 m) with 0,8 or 1,0 mm diameter
- Rod with approx. 15 mm diameter
Since we couldn't find an uncoated copper wire at the hardware store next door, we had to make do with a silver-coated one.
Attention:
Please don't use a plasticised or lacquered copper wire; the experiment won't work.
With the battery ("= = =") and the magnets (S-N und N-S) it looks like this:
S - - - - S-N = = = = = = = = N-S - - - - N
On the left side the "S - - - - S" order causes repulsion.
On the right side the "S - - - - N" order causes attraction.
Hence, the battery is pushed to the right and shoots through the tunnel.
Similar applications
Batterie and magnets are a fascinating combination. We have many more applications with batteries - the distant favourite is The World's Simplest Electric Motor.
The entire content of this site is protected by copyright.
Copying the content or using it elsewhere is not permitted without explicit approval.
Copying the content or using it elsewhere is not permitted without explicit approval.