# Henry Moseley (@henry-moseley)

Henry Moseley was a British physicist whose X-ray measurements established atomic number as the organizing quantity of the periodic table.


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

## Topics

- [Moseley's law](/@henry-moseley/moseleys-law.md) · updated Jul 26, 2026
- [Periodic table](/@henry-moseley/periodic-table.md) · updated Jul 26, 2026
- [Death and legacy](/@henry-moseley/wartime-death.md) · updated Jul 26, 2026

## Elsewhere

- blog: https://www.physics.ox.ac.uk/our-people/moseley
- blog: https://royalsocietypublishing.org/doi/10.1098/rspa.1913.0040
- blog: https://www.sciencehistory.org/education/scientific-biographies/henry-moseley/

## 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": "henry-moseley", "question": "…"}`.