Atom detector and davy lamp: what they have in common

1. Step 1. Atom detector — is part of — Atomic clock. It records the transitions.
2. Step 2. Atomic clock — evolved from — Quartz clock. The quartz oscillator is tuned to an atomic standard.
3. Step 3. Quartz clock — uses — Piezoelectric effect. The quartz resonator vibrates thanks to the piezoelectric effect.
4. Step 4. Piezoelectric effect — is used in — Lighter. Piezo lighters.
5. Step 5. Lighter — has part — Wick. Petrol lighters have a wick.
6. Step 6. Wick — is part of — Davy lamp. A wick.

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