Intercooler and gas lamp: what they have in common

1. Step 1. Intercooler — uses — Heat transfer. Cooling the air.
2. Step 2. Heat transfer — is used in — Heat sink. Heat dissipation.
3. Step 3. Heat sink — is part of — LED lamp. LEDs get warm, so the lamp has an aluminium heat sink.
4. Step 4. LED lamp — evolved from — Incandescent light bulb. It replaced incandescent bulbs.
5. Step 5. Incandescent light bulb — evolved from — Gas lamp. Electricity displaced gas lighting.

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