What is Emilie du Chatelet?
{{Infobox nobility| | name =Émilie du Châtelet | title = Marquise of Châtelet | image = Le Tonnelier de Breteuil, Emilie.jpg | caption =Châtelet by Marianne Loir. | spouse =Florent Claude du Châtelet, Marquis of Châtelet | issue = Gabrielle Pauline, Duchess of Montenero<br>Louis Marie, Duke of Châtelet | full name =Gabrielle Émilie Le Tonnelier | father =[[Louis Nicolas Le Tonnelier, Baron of Breteuil]] | mother =Gabrielle Anne de Froulay | birth_date = 17 December 1706 | birth_place =[[Paris]], [[France]] | death_date =10 September 1749 (aged 42) | death_place =Lunéville, [[Lorraine (region)|Lorraine]] | signature = [[File:Signature Only Emilie Du Chatelet RGNb10349352.01.tif|170px]] | occupation = [[French people|French]] [[nobility|noblewoman]] best known for her Translation of [[Isaac Newton|Newton's]] ''[[Philosophiæ Naturalis Principia Mathematica|Principia]]'' }} '''Émilie du Châtelet''' was a French [[physicist]]. She was born on December 17, 1706, in [[Paris]], [[France]]. Du Châtelet was born into an [[aristocrat]]ic family. She received an excellent [[education]]. Du Châtelet learned [[science]], [[literature]], and [[music]]. She married the Marquis of Châtelet. He lived away from Paris because he had a [[military]] and political career. They had three children. Du Châtelet took private lessons in maths from Pierre-Louis Moreau. Du Châtelet had a 15-year affair with Francois Marie Arouet de [[Voltaire]]. Voltaire recognised her talents. Châtelet helped Voltaire write his book, ''Elements of Newton’s Philosophy''. She had an unwanted child with Jean François de Saint-Lambert when she was 42. She translated ''[[Principia Mathematica]]'' by [[Isaac Newton]] into French while she was pregnant. She died from an infection six days after giving birth to her daughter. It was 1749. Du Châtelet’s translation of ''[[Principia Mathematica]]'' is still used today. She knew