The most unique non polluting energy sources you can find on Earth - the potato, salt water and mud. Be amazed at how they light up a bulb or a sound buzzer.
Contains:
- 3 zinc plates,
- 3 coppers plates,
- a potato buzz wire game,
- a light tower,
- a LED lamp with connection wires,
- 3 plastic cups,
- a sound chip with connection wire,
- an experimental record sheet,
- adhesive tape
- detailed instructions.
