Carousel and radar: what they have in common

1. Step 1. Carousel — uses — Centrifugal effect. Rotation.
2. Step 2. Centrifugal effect — is used in — Impeller. The vanes throw the liquid away from the centre.
3. Step 3. Impeller — is part of — Turbofan. A fan.
4. Step 4. Turbofan — is part of — Jet airliner. Modern airliners use turbofans.
5. Step 5. Jet airliner — has part — Radar. A weather radar.

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