National Museum of American History
1300 Constitution Ave., NW
Washington, DC
See the Wu-Ambler apparatus, which in 1956 enabled physicists to show that, contrary to a previously accepted assumption, mirror symmetry does not hold for all physical processes, and thus, the mirror image of our world is distinguishable from the world itself.
Related manuscripts are also on view in the exhibition that marks the 25th anniversary of the "Fall of Parity."
