The creator attempts to make a magnetic spinner that can spin on its own using magnets. He initially tries using permanent magnets, but this doesn't work due to the repulsion between the magnets. He then switches to using an electromagnet, which can be turned on and off to create a spinning motion. The creator attaches a coin to the spinner and connects it to the electromagnet, allowing the electromagnet to turn on and off as the coin passes by, creating a synchronized spinning motion. He explains that this is essentially how an electric motor works and compares it to a motor from a vacuum cleaner. The creator then modifies the setup to make the spinner spin horizontally and adds extra magnets and electromagnets to create a more complex and impressive spinning motion.
Here are the key facts extracted from the text:
1. The speaker is attempting to create a magnetic spinner that can spin on its own using magnets.
2. The speaker uses a piece of wood as a base for the spinner.
3. The speaker wraps tape around a screw to fit it into a bearing hole.
4. The speaker attaches a plastic support to the back of the wood and screws it into the middle.
5. The speaker marks the side of the magnets to identify their poles.
6. The speaker uses double-sided tape to attach the magnets to the spinner.
7. The speaker uses a magnet to repel the magnets on the spinner and make it spin.
8. The speaker realizes that the magnets will always interact with each other and cannot be used to create a perpetual motion machine.
9. The speaker decides to use an electromagnet instead of a permanent magnet.
10. The speaker creates an electromagnet by wrapping wires around a piece of iron.
11. The speaker uses a computer power supply to power the electromagnet.
12. The speaker attaches the electromagnet to the spinner and uses a switch to turn it on and off.
13. The speaker uses a coin to make contact with the electromagnet and turn it on.
14. The speaker adds more magnets and electromagnets to the spinner to make it spin faster.
15. The speaker explains how an electric motor works and compares it to the magnetic spinner.
16. The speaker dismantles a vacuum cleaner motor to show its components.
17. The speaker identifies the stator, rotor, and commutator in the motor.
18. The speaker explains how the motor brushes make contact with the commutator to turn the motor on and off.