Squirrel-cage rotor and router: what they have in common

1. Step 1. Squirrel-cage rotor — is part of — Induction motor. A rotor of bars closed by rings.
2. Step 2. Induction motor — uses — Electromagnetic induction. The stator’s field induces current in the rotor.
3. Step 3. Electromagnetic induction — is used in — Electricity meter. An induction meter has a rotating disc.
4. Step 4. Electricity meter — evolved into — Smart meter. A digital meter.
5. Step 5. Smart meter — has part — Radio module and antenna. Data transmission.
6. Step 6. Radio module and antenna — is part of — Router. A Wi-Fi access point.

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