Turbofan and atomic clock: what they have in common

1. Step 1. Turbofan — is made of — Titanium. The fan blades are titanium.
2. Step 2. Titanium — is material for — Pacemaker. The case is titanium.
3. Step 3. Pacemaker — has part — Oscillator. A pulse generator.
4. Step 4. Oscillator — is part of — Atomic clock. A quartz oscillator is tuned to the atoms.

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