Louis de Broglie — French Physicist born on August 15, 1892, died on March 19, 1987
Louis-Victor-Pierre-Raymond, 7th duc de Broglie was a French 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... (wikipedia)