Piano e oil lamp: o que têm em comum

1. Passo 1. Piano — utiliza — Tuning fork. Tuning.
2. Passo 2. Tuning fork — faz parte de — Quartz clock. Quartz shaped like a tuning fork at 32,768 Hz.
3. Passo 3. Quartz clock — utiliza — Piezoelectric effect. The quartz resonator vibrates thanks to the piezoelectric effect.
4. Passo 4. Piezoelectric effect — é utilizado em — Lighter. Piezo lighters.
5. Passo 5. Lighter — tem como parte — Wick. Petrol lighters have a wick.
6. Passo 6. Wick — faz parte de — Oil lamp. The wick feeds oil to the flame.

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