Medical linear accelerator and multistage rocket: what they have in common

1. Step 1. Medical linear accelerator — has part — Magnetron. A microwave generator (magnetron or klystron).
2. Step 2. Magnetron — is part of — Radar. The cavity magnetron made compact radar possible.
3. Step 3. Radar — is part of — Jet fighter. A radar.
4. Step 4. Jet fighter — has part — Afterburner. An afterburner.
5. Step 5. Afterburner — uses — Kerosene. It burns extra fuel in the exhaust.
6. Step 6. Kerosene — is material for — Multistage rocket. The fuel is kerosene.

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