Deodorant and heron’s aeolipile: what they have in common

1. Step 1. Deodorant — uses — Aerosol can. An aerosol.
2. Step 2. Aerosol can — has part — Valve. A valve.
3. Step 3. Valve — is part of — Gas stove. Gas taps.
4. Step 4. Gas stove — uses — Combustion. Burners.
5. Step 5. Combustion — is used in — Heron’s aeolipile. A fire boils the water in the cauldron.

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