Neutrons revive Heisenberg's first take on uncertainty - physicsworld.com | Science News | Scoop.it

Physicists in Austria and Japan are the first to measure two physical quantities that were used in 1927 by Werner Heisenberg in an early formulation of quantum mechanics – but then abandoned because the terms did not seem to agree with the rapidly-evolving theory. The neutron experiment verifies a 2003 reformulation of Heisenberg's famous uncertainty principle that reintroduces the concepts of error and disturbance.