Nuclear weapon and centrifugal pump: what they have in common

1. Step 1. Nuclear weapon — works like — Nuclear reactor. The same physics: a controlled and an uncontrolled chain reaction.
2. Step 2. Nuclear reactor — is part of — Nuclear power plant. The reactor heats the coolant.
3. Step 3. Nuclear power plant — has part — Steam turbine. Steam turns the turbines — as at a thermal station.
4. Step 4. Steam turbine — evolved into — De Laval nozzle. De Laval invented the nozzle for a steam turbine.
5. Step 5. De Laval nozzle — is part of — Liquid-propellant rocket engine. A nozzle.
6. Step 6. Liquid-propellant rocket engine — has part — Centrifugal pump. Turbopumps deliver the propellant.

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