- A CD container
- 10 meters copper wire
- Aluminum foil
- Paper
- 11 LEDs
- A Roller bearing (you don't have to use it if you can't find)
- 2 x 1.5V battery
- Black cardboard
- Copper plane
- Solder
- Glue
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2) Then cut 1 metre copper wire for each of the branches on the reactor and wind them. You will understand it better at the picture.
3) Cut a black circle from a black paper(or something else) for the inside circle.
4) Cut aluminium foil like a circle for the outer circle.
























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