Sand temper e sonar: o que têm em comum
- Passo 1. Sand temper — faz parte de — Pottery. Sand or grog so the vessel does not crack in firing.
- Passo 2. Pottery — utiliza — Fazer fogo. The first pottery was fired right in a campfire.
- Passo 3. Fazer fogo — evoluiu para — Lighter. A fire striker.
- Passo 4. Lighter — utiliza — Piezoelectric effect. Piezo lighters.
- Passo 5. Piezoelectric effect — é utilizado em — Sonar. Langevin’s transducer is piezoelectric quartz.