Piano and oil lamp: what they have in common

1. Step 1. Piano — uses — Tuning fork. Tuning.
2. Step 2. Tuning fork — is part of — Quartz clock. Quartz shaped like a tuning fork at 32,768 Hz.
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 — Oil lamp. The wick feeds oil to the flame.

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