(Adult Supervision Required)
- Take a metre long bamboo stick.
- Fix a mini motor at one of its ends with a freely rotating propeller fixed to it. The propeller may be cut out of thick drawing sheet or aluminium or tin foil.
- A battery cell of 1.5V be fixed at the other end of the stick with cellotape.
- The battery terminals should be connected to the terminals of the motor.
- Cut the wire somewhere at the centre to keep the cell disconnected when not in use.
- Suspend the stick with a long thread at the centre by balancing it.
- Now complete the circuit by joining the disconnected ends. The propeller begins to rotate. With the result there is an air-drift and the gadget begins to rotate freely, parallel to the ground.
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