Lithium-ion battery and davy lamp: what they have in common

1. Step 1. Lithium-ion battery — is part of — Laptop. A battery.
2. Step 2. Laptop — has part — Heat pipe. Heat pipes.
3. Step 3. Heat pipe — uses — Capillary action. The liquid returns along the wick by capillary action.
4. Step 4. Capillary action — is used in — Wick. Fuel rises up the wick by capillary forces.
5. Step 5. Wick — is part of — Davy lamp. A wick.

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