Superheated liquid chamber and rocket: what they have in common

1. Step 1. Superheated liquid chamber — is part of — Bubble chamber. Liquid hydrogen.
2. Step 2. Bubble chamber — is made of — Hydrogen. The working medium is superheated liquid hydrogen.
3. Step 3. Hydrogen — is used in — Liquid-propellant rocket engine. Hydrogen is an efficient fuel.
4. Step 4. Liquid-propellant rocket engine — evolved from — Rocket. Goddard switched to liquid fuel.

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