👉 Courant, a French physicist who lived in the 19th century, is often referred to as one of the pioneers of quantum mechanics. He was particularly interested in the behavior and structure of charged particles, which he believed could be studied through the principles of electromagnetism. Courant's work laid the groundwork for modern physics by developing a mathematical framework that allowed scientists to describe and predict phenomena at the atomic scale. Courant's contributions were crucial in the development of quantum mechanics, as it