Andre Marie Ampere

Those were the days of French revolution. His father was sentenced to death. Ampere was mentally shocked. He had lost his paternal property. He married Julie. She gave birth to his son. Ampere got an appointment as teacher in a high school. He worked there for two years and then joined an engineering college in Paris.

In 1819 Johannes C. oersted of Denmark performed an experiment in which he observed a magnetic needle moving near a wire carrying current. Ampere conducted an experiment to find out the effect of electricity on a magnetic needle. His discovers helped electrodynamics. It was confirmed that magnets can be developed with the help of electricity. When electricity flows through a coil it gets magnetized and the current started from its origination and returns through a circuit. Ampere published his book on magnetism and electricity in 1823. He said that molecular electricity causes magnetism. Later it was made known that the flow of electrons constitute current.