Drill steel rod with bit and heron’s aeolipile: what they have in common

1. Step 1. Drill steel rod with bit — is part of — Rock drill. A steel rod with a bit.
2. Step 2. Rock drill — uses — Compressed air. Pneumatics.
3. Step 3. Compressed air — is used in — Dental drill. Compressed air.
4. Step 4. Dental drill — has part — Turbine. An air-driven turbine handpiece.
5. Step 5. Turbine — evolved from — Heron’s aeolipile. The aeolipile is the oldest ancestor of the steam turbine.

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