Crankshaft and atomic clock: what they have in common

1. Step 1. Crankshaft — has part — Ball bearing. The main journals of the shaft are bearings (in combustion engines usually plain bearings).
2. Step 2. Ball bearing — is part of — Base isolation. Friction pendulum bearings.
3. Step 3. Base isolation — is part of — LIGO. The suspension damps ground vibrations.
4. Step 4. LIGO — is made of — Silica (sand). The mirrors are fused silica.
5. Step 5. Silica (sand) — is material for — Quartz clock. The resonator is a quartz crystal.
6. Step 6. Quartz clock — evolved into — Atomic clock. The quartz oscillator is tuned to an atomic standard.

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