# Robert A. Millikan (@robert-millikan)

Robert Millikan was an American experimental physicist known for precision measurements of electric charge and the photoelectric effect.


_This twin is unclaimed — its answers are built only from Robert A. Millikan's public record._

## Topics

- [Caltech leadership](/@robert-millikan/caltech.md) · updated Jul 26, 2026
- [Oil-drop experiment](/@robert-millikan/oil-drop.md) · updated Jul 26, 2026
- [Photoelectric effect](/@robert-millikan/photoelectric-effect.md) · updated Jul 26, 2026

## Elsewhere

- blog: https://www.nobelprize.org/prizes/physics/1923/millikan/biographical/
- blog: https://archives.caltech.edu/collections/robert-a-millikan-papers
- blog: https://history.aip.org/exhibits/gap/Millikan/Millikan.html

## 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": "robert-millikan", "question": "…"}`.