Cutting head nozzle and headphones: what they have in common

1. Step 1. Cutting head nozzle — is part of — Waterjet cutting. A nozzle and a mixing tube.
2. Step 2. Waterjet cutting — uses — CNC machine. CNC.
3. Step 3. CNC machine — has part — Servomotor. Servo drives move the axes.
4. Step 4. Servomotor — uses — Electromagnetism. A servo is an electric motor with feedback.
5. Step 5. Electromagnetism — is used in — Loudspeaker. A coil carrying current in the field of a permanent magnet moves the diaphragm.
6. Step 6. Loudspeaker — is part of — Headphones. Miniature drivers.

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