On 8 October 1850, Henri Louis Le Châteaux was born. Le Châtelette is a famous French chemist who is well known for proposing the Le Châtrelet principle, in which the direction of the chemical equilibrium moves under the influence of external conditions. His scientific work on alloys and concrete led to the development of the French mining and metallurgical industry. In addition to his academic achievements, Le Châtel was an outstanding patriot. France was in danger at the time of the First World War, and he served as Minister of Armed Forces, fighting for the defence of the Fatherland.
Born into a family of chemicals, Le Châtet developed a keen interest in chemistry from an early age. He graduated magna laude from the Technical University of Paris in 1875, received his doctorate in 1887, and then acquired the position of professor of general chemistry at the École des Hautes des Mines. In 1888, Le Châtreet discovered the principle of chemical equilibrium movement, known as the "Le Châtelet principle". In 1907, he also served as French Minister of Mines, serving as Minister of Armed Forces during World War I, retiring in 1919. He died on 17 September 1936 in Isère.
Editor/Yuan Licong Review/Yao Hanzhi
![How to correctly understand and apply the Le Châtree principle[fig]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)