Acetylene and industrial robot: what they have in common

1. Step 1. Acetylene — is used in — Headlight. The first headlamps burned acetylene.
2. Step 2. Headlight — uses — Reflection of light. A reflector gathers the light into a beam.
3. Step 3. Reflection of light — is used in — Endoscope. A mirror directs the light of a candle.
4. Step 4. Endoscope — is part of — Surgical robot. An endoscopic camera.
5. Step 5. Surgical robot — evolved from — Industrial robot. Manipulators.

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