Jules Célestin Jamin (31 May 1818 - 12 February 1886) was a French physicist. Events 1279 BC - Rameses II (The Great (19th dynasty becomes pharaoh of Ancient Egypt. Year 1818 ( MDCCCXVIII) was a Common year starting on Thursday (link will display the full calendar of the Gregorian Calendar (or a Common Events 1429 - English Forces under Sir John Fastolf defend a supply convoy carrying rations to the army besieging Orleans from attack by the Year 1886 ( MDCCCLXXXVI) was a Common year starting on Friday (link will display the full calendar of the Gregorian calendar (or a Common This article is about the country For a topic outline on this subject see List of basic France topics. A physicist is a Scientist who studies or practices Physics. Physicists study a wide range of physical phenomena in many branches of physics spanning He was professor of physics at École Polytechnique from 1852 to 1881 and received the Rumford Medal in 1858 for his work on light. Physics (Greek Physis - φύσις in everyday terms is the Science of Matter and its motion. For other Écoles Polytechniques see École Polytechnique de Montréal and École Polytechnique Fédérale de Lausanne. Not to be confused with the Rumford Prize In 1796, Benjamin Thompson known as Count Rumford, gave $5000 separately to the Royal Light, or visible light, is Electromagnetic radiation of a Wavelength that is visible to the Human eye (about 400–700 He improved Brewster's inclined interference plates with the development of the Jamin interferometer. Sir David Brewster, FRS ( 11 December 1781 &ndash 10 February 1868) was a Scottish scientist inventor and writer Jamin interferometer is a type of Interferometer, related to the Mach-Zehnder interferometer.