Tsiolkovsky rocket equation and oil lamp: what they have in common

1. Step 1. Tsiolkovsky rocket equation — is used in — Multistage rocket. Tsiolkovsky justified “rocket trains”.
2. Step 2. Multistage rocket — is made of — Kerosene. The fuel is kerosene.
3. Step 3. Kerosene — is used in — Kerosene lamp. The fuel.
4. Step 4. Kerosene lamp — evolved from — Oil lamp. A development of the oil lamp.

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