One of the world's greatest quantum physicists and philosophers of science explains the basics and the theory of relativity and its more revolutionary offspring, quantum theory.
David Joseph Bohm (December 20, 1917 – October 27, 1992) was an American scientist who has been described as one of the most significant theoretical physicists of the 20th century and who contributed innovative and unorthodox ideas to quantum theory, neuropsychology and the philosophy of mind.