# second (temporal)

a regular portion of time

- Computed level: L4 (depth in the emergence graph, not abstraction)
- Status: review  ·  Domain: time.measure  ·  Arena: second

## Emergence
**Emerges from:** [time](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-time.dimension), [regular](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-regular.frequency), [portion](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-portion.share)

**Through:** time and regular together with a portion make a distinct repeat

**Novel properties:**
- discrete unit
- standard measure
- repeatable interval

## Examples
- The International Atomic Time standard defines the second by 9,192,631,770 cycles of radiation from a cesium-133 atom. *(physics)*
- The Greenwich Time Signal, known as the 'pips,' has marked the precise start of each second on BBC radio since 1924. *(institutions)*
- The HP 5061A atomic clock, deployed in 1960, stabilized the definition of the second to within one part in 10^11. *(engineering)*

## Used by
- [cusp](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-cusp.threshold) (L14)
- [double](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-double.quantity) (L5)
- [february](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-february.calendar) (L14)
- [minutes](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-minutes.temporal) (L6)
- [redundancy](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-redundancy.engineering) (L12)
- [third](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-third.ordinal) (L13)
- [tuesday](https://emergencemachine.com/tools/lexicon/what-is-the-meaning-of-tuesday.temporal) (L6)

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