Optical fibre and internal combustion engine: what they have in common

1. Step 1. Optical fibre — is part of — Endoscope. Flexible endoscopes use optical fibre.
2. Step 2. Endoscope — is part of — Surgical robot. An endoscopic camera.
3. Step 3. Surgical robot — has part — Servomotor. Servo drives.
4. Step 4. Servomotor — is part of — Insulin pump. A stepper motor moves the plunger.
5. Step 5. Insulin pump — has part — Piston. The reservoir’s plunger.
6. Step 6. Piston — is part of — Internal combustion engine. The burning mixture pushes the piston.

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