# Ernst Ruska (@ernst-ruska)

Ernst Ruska was a German physicist and electrical engineer who designed the first electron microscope.


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

## Topics

- [Historical context](/@ernst-ruska/historical-context.md) · updated Jul 26, 2026
- [Influence](/@ernst-ruska/influence.md) · updated Jul 26, 2026
- [Major work](/@ernst-ruska/major-work.md) · updated Jul 26, 2026

## Elsewhere

- blog: https://www.nobelprize.org/prizes/physics/1986/ruska/biographical/
- blog: https://www.britannica.com/biography/Ernst-Ruska
- blog: https://www.mpg.de/968752/ernst_ruska

## 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": "ernst-ruska", "question": "…"}`.