# Non-ionizing radiation

> Electromagnetic radiation whose photons lack the energy to remove electrons from atoms — everything below ultraviolet, including all EMF discussed on this site.

- Canonical URL: https://emfbase.com/glossary/non-ionizing-radiation
- Collection: Glossary
- Record id: `glossary:non-ionizing`
- Status: verified
- Last verified: 2026-08-12
- JSON: https://emfbase.com/api/glossary/non-ionizing-radiation

## Key values

- **Category:** physics

## Definition

Non-ionizing radiation covers all electromagnetic radiation below the ionization threshold, meaning it cannot break chemical bonds directly the way X-rays and gamma rays do. This is a statement about mechanism, not a statement that no effect is possible: established non-ionizing effects include tissue heating at RF and nerve stimulation at ELF, both of which exposure limits are built around.

## Sources

- `icnirp-2020` International Commission on Non-Ionizing Radiation Protection (2020). *Guidelines for Limiting Exposure to Electromagnetic Fields (100 kHz to 300 GHz)*. https://www.icnirp.org/en/publications/article/rf-guidelines-2020.html — guideline, link checked 2026-08-12
- `who-emf-rf` World Health Organization. *Radiation: Electromagnetic fields (questions and answers)*. https://www.who.int/news-room/questions-and-answers/item/radiation-electromagnetic-fields — government, link checked 2026-08-12

Data licence: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Dataset version 2026.08.1. Retrieved from EMFBase, https://emfbase.com.

This record is reference data, not medical or legal advice. Regulatory limits, scientific guidelines and precautionary values are labelled separately and answer different questions.