Paul Langevin
![](https://upload.wikimedia.org/wikipedia/commons/9/9c/Paul_Langevin_Wellcome2.jpg)
He was a doctoral student of Pierre Curie and later a lover of widowed Marie Curie. He is also known for his two US patents with Constantin Chilowsky in 1916 and 1917 involving ultrasonic submarine detection. He is entombed at the Panthéon. Provided by Wikipedia