Louis Victor Pierre Raymond, 7th Duc de Broglie was a French aristocrat and physicist who made groundbreaking contributions to quantum theory. In his 1924 PhD thesis, he postulated the wave nature of electrons and suggested that all matter has wave properties. This concept is known as the de Broglie hypothesis, an example of wave–particle duality, and forms a central part of the theory of quantum mechanics.
François-Marie, 1st duc de Broglie (1671–1745) ancestor of Louis de Broglie and Marshal of France under Louis XV of France
Ondes et mouvements, 1926
The Académie Française, also known as the French Academy, is the principal French council for matters pertaining to the French language. The Académie was officially established in 1635 by Cardinal Richelieu, the chief minister to King Louis XIII. Suppressed in 1793 during the French Revolution, it was restored as a division of the Institut de France in 1803 by Napoleon Bonaparte. It is the oldest of the five académies of the institute. The body has the duty of acting as an official authority on the language; it is tasked with publishing an official dictionary of the language.
Cardinal Richelieu, responsible for the establishment of the Académie
Raymond Poincaré was one of the five French heads of state who became members of the Académie Française. He is depicted wearing the habit vert, or green habit, of the Académie.
Bernard Dujon and his colleague Eric Westhof, wearing the "Habit vert" of the Institut de France