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

1. Step 1. Cannon — is part of — Ironclad. Artillery.
2. Step 2. Ironclad — is a kind of — Screw steamship. An ironclad is a steamship clad in armour.
3. Step 3. Screw steamship — evolved into — Ocean liner. A large steamship.
4. Step 4. Ocean liner — has part — Turbine. Large liners run on steam turbines.
5. Step 5. Turbine — evolved from — Heron’s aeolipile. The aeolipile is the oldest ancestor of the steam turbine.

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