Robert Millikan
Robert Millikan was born on March 22nd 1868 in Morrison Illinois. He died on the 19th of December 1953 in San Marino California. He went to collage in Germany he stayed in collage till 1895-1896. Robert found the charge of an electrons. He won the Nobel prize for physics in 1923. The experiment to find the charge in electrons. He used a closed charmer with transparent sides fitted with metal plates. The plates find negative and positive charge when it applies. force of an electrical charge is equal to the charge and the electrical field.
Millikan's oil drop experiment to determine charge of an electron - Chemistry