Flintlock and smart meter: what they have in common

1. Step 1. Flintlock — works like — Lighter. The same way of striking a spark.
2. Step 2. Lighter — uses — Piezoelectric effect. Piezo lighters.
3. Step 3. Piezoelectric effect — is used in — Sonar. Langevin’s transducer is piezoelectric quartz.
4. Step 4. Sonar — works like — Parking sensor. Echolocation in air.
5. Step 5. Parking sensor — has part — Microcontroller. A microcontroller calculates the distance.
6. Step 6. Microcontroller — is part of — Smart meter. A microcontroller does the metering.

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