Physicist ane philosopher
Étienne Klein is a French physicist and philosopher of science. A graduate of École Centrale Paris, he holds a DEA (Master of Advanced Studies) in theoretical physics, as well as a Ph.D. in philosophy of science and an accreditation to supervise research (HDR). He is currently head of the Laboratoire des Recherches sur les Sciences de la Matière (LARSIM), a research laboratory belonging to the CEA and located in Saclay near Paris. He taught quantum physics and particle physics at Centrale Paris for several years and currently teaches philosophy of science. He is a specialist in the question of time in physics and has written a number of essays on the subject. He presents a radio chronicle La Conversation scientifique every Saturday, on the French public station France Culture. Étienne Klein is the author of many books. He practises mountain-climbing and other endurance sports.