## You are here

HomeGabrielle-\'Emilie le Tonnelier de Breteuil

## Primary tabs

# Gabrielle-Émilie le Tonnelier de Breteuil

The *Marquise du Châtelet*, née *Gabrielle-Émilie le Tonnelier de Breteuil* (1706 - 1749) French mathematician and physicist. The daughter of an important functionary in King Louis XIV’s court, she was well-educated in languages, sciences, mathematics, arts and sports. Barely 20, she married the Marquis du Châtelet and bore him three children, possibly by other men. To educate her children, she wrote a textbook on physics and made a French translation of Isaac Newton’s Philosophie naturalis principia mathematica that is still used today. Her approximation $e\sim mv^{2}$ (the energy $e$ of a moving object is proportional to its mass $m$ times the square of its velocity $v$) presaged Einstein’s equation $e=mc^{2}$ by a century and a half.

# References

- 1 G. J. Tee “Gabrielle-Émilie le Tonnelier de Breteuil, Marquise du Châtelet” in Women of Mathematics: A Bibliographic Sourcebook L. Grinstein, P. Cambpell, ed.s New York: Greenwood Press (1987): 21 - 25

## Mathematics Subject Classification

01A50*no label found*

- Forums
- Planetary Bugs
- HS/Secondary
- University/Tertiary
- Graduate/Advanced
- Industry/Practice
- Research Topics
- LaTeX help
- Math Comptetitions
- Math History
- Math Humor
- PlanetMath Comments
- PlanetMath System Updates and News
- PlanetMath help
- PlanetMath.ORG
- Strategic Communications Development
- The Math Pub
- Testing messages (ignore)

- Other useful stuff

## Recent Activity

new correction: examples and OEIS sequences by fizzie

Oct 13

new correction: Define Galois correspondence by porton

Oct 7

new correction: Closure properties on languages: DCFL not closed under reversal by babou

new correction: DCFLs are not closed under reversal by petey

new question: Lorenz system by David Bankom

Oct 2

new correction: Many corrections by Smarandache

Sep 28

new question: how to contest an entry? by zorba

new question: simple question by parag

Sep 26

new question: Latent variable by adam_reith