Pendulum clock e motor diesel: o que têm em comum

1. Passo 1. Pendulum clock — evoluiu para — Quartz clock. Quartz replaced the pendulum as the frequency standard.
2. Passo 2. Quartz clock — utiliza — Piezoelectric effect. The quartz resonator vibrates thanks to the piezoelectric effect.
3. Passo 3. Piezoelectric effect — é utilizado em — Sonar. Langevin’s transducer is piezoelectric quartz.
4. Passo 4. Sonar — faz parte de — Submarine. Underwater acoustics.
5. Passo 5. Submarine — tem como parte — Motor diesel. Diesel-electric submarines.

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