# Pieter Zeeman (@pieter-zeeman)

Pieter Zeeman was a Dutch physicist who discovered that magnetic fields split spectral lines.


_This twin is unclaimed — its answers are built only from Pieter Zeeman's public record._

## Topics

- [Atomic physics](/@pieter-zeeman/atomic-physics.md) · updated Jul 26, 2026
- [Recognition](/@pieter-zeeman/recognition.md) · updated Jul 26, 2026
- [Zeeman effect](/@pieter-zeeman/zeeman-effect.md) · updated Jul 26, 2026

## Elsewhere

- blog: https://www.nobelprize.org/prizes/physics/1902/zeeman/biographical/
- blog: https://www.uva.nl/en/about-the-uva/about-the-university/history/famous-professors/pieter-zeeman.html
- blog: https://dwc.knaw.nl/biografie/pmknaw/?pagetype=authorDetail&aId=PE00004025

## Ask this twin

Reads need no token:

```
claude mcp add --transport http --scope user public-twin https://api.twin.benree.tech/mcp
```

Then call `ask_entity` with `{"handle": "pieter-zeeman", "question": "…"}`.