![Tennis Court Oath, on 20th June 1789, with Jean Sylvain Bailly (oil painting, 18th century) by David, Jacques Louis (1748-1825) Tennis Court Oath, on 20th June 1789, with Jean Sylvain Bailly (oil painting, 18th century) by David, Jacques Louis (1748-1825)](https://images-cdn.bridgemanimages.com/api/1.0/image/600wm.LRI.45587640.7055475/4675375.jpg)
Tennis Court Oath, on 20th June 1789, with Jean Sylvain Bailly (oil painting, 18th century) by David, Jacques Louis (1748-1825)
![File:Anonymous - Portrait de Jean-Sylvain Bailly (1736-1793), maire de Paris. - P1463 - Musée Carnavalet.jpg - Wikimedia Commons File:Anonymous - Portrait de Jean-Sylvain Bailly (1736-1793), maire de Paris. - P1463 - Musée Carnavalet.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/1/1c/Anonymous_-_Portrait_de_Jean-Sylvain_Bailly_%281736-1793%29%2C_maire_de_Paris._-_P1463_-_Mus%C3%A9e_Carnavalet.jpg)
File:Anonymous - Portrait de Jean-Sylvain Bailly (1736-1793), maire de Paris. - P1463 - Musée Carnavalet.jpg - Wikimedia Commons
![Jean-Sylvain Bailly (September 15, 1736 - November 12, 1793) was a French astronomer, mathematician, and political leader of the early part of the French Revolution. He calculated an orbit for the next Jean-Sylvain Bailly (September 15, 1736 - November 12, 1793) was a French astronomer, mathematician, and political leader of the early part of the French Revolution. He calculated an orbit for the next](https://c8.alamy.com/comp/G14X5E/jean-sylvain-bailly-september-15-1736-november-12-1793-was-a-french-G14X5E.jpg)