# phase speed of electromagnetic waves

> physical quantity

**Wikidata**: [Q77990619](https://www.wikidata.org/wiki/Q77990619)  
**Source**: https://4ort.xyz/entity/phase-speed-of-electromagnetic-waves


## References

1. IEC 80000-6:2008 Quantities and units—Part 6: Electromagnetism
2. IEC 80000-6:2022 Quantities and units — Part 6: Electromagnetism