# physical layer

> the lowest-level electronic or optical transmission functions of a network

**Wikidata**: [Q192727](https://www.wikidata.org/wiki/Q192727)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Physical_layer)  
**Source**: https://4ort.xyz/entity/physical-layer


## References

1. Freebase Data Dumps. 2013
2. [Source](https://www.iso.org/ics/35.100.10/x/)
3. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)