Fire extinguisher and atomic clock: what they have in common

1. Step 1. Fire extinguisher — has part — Valve. A shut-off device.
2. Step 2. Valve — is part of — Valve trumpet. Valves.
3. Step 3. Valve trumpet — uses — Resonance. Resonance of the tube.
4. Step 4. Resonance — is used in — Quartz clock. Resonance of the crystal.
5. Step 5. Quartz clock — evolved into — Atomic clock. The quartz oscillator is tuned to an atomic standard.

Open Evothings