# air (material)

A matter that flows in space

- Computed level: L4 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: matter.substance  ·  Arena: air

## Emergence
**Emerges from:** [matter](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-matter.substance), [flow](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-flow.movement), [space](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-space.extent)

**Through:** Matter flows together in space

**Novel properties:**
- continuous medium
- pressure variation
- transmission of sound

## Examples
- The 2023 heatwave in Phoenix saw air temperatures exceed 45°C for 19 consecutive days. *(meteorology)*
- Air flows through the Large Hadron Collider’s beam pipes at 10^-13 atm to prevent particle scattering. *(physics)*
- In 1977, NASA's Voyager 1 detected air-like plasma flow beyond the heliosphere. *(space_science)*

## Used by
- [airport](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-airport.transport) (L17)
- [blue](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-blue.color) (L12)
- [weather](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-weather.atmospheric) (L15)
- [wireless](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-wireless.electrical) (L11)

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