Infrared thermometer and piston pump: what they have in common

1. Step 1. Infrared thermometer — has part — Thermocouple. A thermopile.
2. Step 2. Thermocouple — is part of — Radioisotope generator. Thermocouples turn heat into current.
3. Step 3. Radioisotope generator — is part of — Space probe. The Voyagers’ RTGs.
4. Step 4. Space probe — is made of — Titanium. The tanks are titanium.
5. Step 5. Titanium — is material for — Artificial heart. The case is titanium.
6. Step 6. Artificial heart — has part — Piston pump. A pulsatile pump.

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