CV joint and headphones: what they have in common

1. Step 1. CV joint — uses — Torque. It transmits torque at an angle.
2. Step 2. Torque — is used in — Planetary gear. It transmits rotation through planet gears.
3. Step 3. Planetary gear — is part of — Wind turbine. A gearbox raises the speed.
4. Step 4. Wind turbine — has part — Neodymium magnet. Direct-drive generators.
5. Step 5. Neodymium magnet — is a kind of — Permanent magnet. A kind of magnet.
6. Step 6. Permanent magnet — is part of — Headphones. A magnet moves the diaphragm.

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