When Ampere was a child, he showed a good talent for mathematics. /kloc-became a teacher of Lagrange, a famous mathematician, at the age of 0/2, and published a mathematical paper at the age of 0/3. The value of Ampere lies in his good ideas. Once, he was thinking in the street and suddenly thought of an electrical formula. He is anxious to list the molecular formula. There happened to be a carriage parked in front, so he used it as a blackboard. After the carriage left, he walked faster and faster until he couldn't catch up. By this time, many people in the street had been convulsed with laughter by his abnormal behavior.