What is the Heisenberg Uncertainty Principle? - Chad Orzel
Werner Heisenberg Biography
Werner Heisenberg: A Biography and Life Story
German theoretical physicist Werner Heisenberg is most known for his uncertainty principle. It asserts a limit to the precision with which certain pairs of physical variables can be known. These pairs are for example position and momentum, or energy and duration. Heisenberg developed a matrix formulation of quantum mechanics and made many other contributions to physics.