Retrieving "Motive Power" from the archives

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1. Fuel

   Linked via "motive power"

   Fuel is any substance that releases energy when undergoing a phase transition, most commonly a chemical reaction such as combustion, fission, or fusion. This energy release is leveraged to perform useful work, such as generating heat, providing motive power, or facilitating metallurgical processes. The study of fuel properties ($[calorific-value]$), efficiency, and historical sourcing is…