# engine (tool)

a device that changes energy into motion

- Computed level: L6 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: everyday  ·  Arena: engine

## Emergence
**Emerges from:** [device](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-device.tool), [energy](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-energy.capacity), [motion](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-motion.movement), [change](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-change.process)

**Through:** the device changes energy into motion

**Novel properties:**
- conversion of energy to motion
- directed mechanical output
- controlled change through energy flow

## Examples
- The internal combustion engine in a 1965 Ford Mustang converts gasoline energy into rotational motion at the crankshaft. *(engineering)*
- A hydroelectric turbine at Niagara Falls transforms flowing water's kinetic energy into mechanical rotation to drive generators. *(physics)*
- The bacterial flagellar motor in E. coli uses proton gradients to spin its tail and propel the cell forward. *(biology)*

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*Canonical: https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-engine.tool*  
*Structured data: https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-engine.tool.json*  
*Every definition provably resolves to space, time, energy and pattern.*