who was one of the founders of the electron theory of matter. This gave a partial explanation of the Zeeman effect; for this work Lorentz shared the 1902 Nobel Prize with Pieter Zeeman (1865–1943). Lorentz also solved one of the problems raised by the Michelson–Morley experiment (see Lorentz–Fitzgerald contraction) and suggested the Lorentz transformations, both of which were used by Einstein in his special theory of relativity.