Webcam and watt steam engine: what they have in common

1. Step 1. Webcam — is part of — Laptop. Above the screen is a small webcam for video calls.
2. Step 2. Laptop — has part — Heat pipe. Heat pipes.
3. Step 3. Heat pipe — uses — Latent heat. Evaporation and condensation.
4. Step 4. Latent heat — is used in — Separate condenser. Watt drew on Black’s research on latent heat.
5. Step 5. Separate condenser — is part of — Watt steam engine. Watt’s main invention.

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