5 Amazing Tricks With Magnets

Tricks from this video:
1. Homemade compass. For this trick you need needle, piece of cork, magnet, plate and some water. You need to magnetize a needle and put it on the cork which floating in the plate with water. The needle show you South and North.

2. Simple speaker. For this trick you need copper wire d 0.2-0.3 mm, magnet and tape. Follow the instruction and coonect the ends of the wire to your mobile phone or mp3 player.

3. Electric magnet. For this trick you need battery, copper wire and nail. Instruction is quite simple: wrap the nail with the wire and connect the ends of the wire to the battery. That's all :)

4. Simplest homopolar motor. You need battery, aluminium foil and 2 neodium magnets. Connetc opposite poles magnets to the battery and put it on the foil. Your motor starts rotate.

5. Perfect geometry. You need 7 same magnets, 7 coca cola caps, plate and water. Stick magnets to the caps. Fill the plate with water and put caps very carefully one by one. You will see the perfect geometry!