CHAMPVA is a Department of Veterans Affairs program; TRICARE is a regionally managed health care program for active duty and retired members of the uniformed services, their families, and survivors. In some cases a Veteran may appear to be eligible for both/either program on paper.
Quick Answer. Michael Faraday discovered the law of electromagnetic induction in 1831. He realized that current in a circuit can be induced by changing the magnetic field. Faraday tested it by wrapping a paper cylinder with a wire and connecting the coil to a galvanometer. Faraday then moved the magnet back and forth inside the cylinder.
In 1831, the English scientist Michael Faraday discovered that an electrical current could be induced in a copper wire by a moving magnetic field. This led to two crucial inventions: the dynamo and the electric motor.t had been evolved by many Europeans and in 1852 the first 'modern' light bulb was invented. Edison bought his patent in the 1870s from other inventors and experimented with different filaments. Quite ironic as this pages is about the misconception of who first harnessed electricity.