From an early age Andre-Marie Ampere taught himself the fundamentals of math. His dad felt it was important to have an "education direct from nature" instead of a formal education.
The French Revolution began and while it brought him personal heartache, it also brought new institutions of science that became central to his success. He also began a job as a math teacher!
In 1802, Andre-Marie Ampere was appointed a professor of physics and chemistry at the Ecole Centrale. He used this time to study mathematics. Over the next 10 years Ampere would write papers ranging from mathematics to chemistry.
With the help of Ampere's friend Arago, Ampere began developing a mathematical and physical theory to understand the relationship between electricity and magnetism. He created a way to use math in generalizing physical laws from experimental results.
In 1827 Ampere published Memoir on the Mathematical Theory of Electrodynamic Phenomena this work is what coined the name of his new science, electrodynamics. In recognition of his work, an international convention established the ampere as a standard unit of electrical measurement.