Number 184 (Story #2), June 21, 1994 by Phillip F. Schewe and Ben Stein INTERFEROMETRY OF IODINE MOLECULES has been carried out by physicists at the University of Paris-North in France (Physics Letters A, vol. 188, p 187). Exploiting the wavelike properties of matter, scientists have over the years been able to split photons, neutrons, electrons, and, more recently, whole atoms into separate wave trains which are later caused to interfere with each other, resulting in a characteristic pattern of fringes. Extending this principle to iodine molecules, the French researchers use laser beams to split and then to recombine the molecule waves. (New Scientist, 4 June 1994.)