# radio (electrical)

a device that receives audio through electricity

- Computed level: L7 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: electrical  ·  Arena: radio

## Emergence
**Emerges from:** [device](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-device.tool), [audio](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-audio.auditory), [electricity](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-electricity.electrical)

**Through:** The device receives audio through electricity.

**Novel properties:**
- portable listening
- broadcast reception

## Examples
- The Voyager 1 probe received commands via radio signals from NASA's Deep Space Network after 40 years in flight. *(space)*
- In 1901, Marconi transmitted the first transatlantic radio signal from Cornwall to Newfoundland. *(history)*
- FM radio station WGBH broadcasts classical music at 89.7 MHz from Boston to listeners across eastern Massachusetts. *(media)*

## Used by
- [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-radio.electrical*  
*Structured data: https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-radio.electrical.json*  
*Every definition provably resolves to space, time, energy and pattern.*