Abstract :
In the subatomic world of electrons and other particles, one can never know completely what is going on. If a physicist knows precisely how fast a particle is traveling, for example, he cannot tell exactly where it is. This is the well-known principle of uncertainty that, for decades, has been an important part of physical theory. Now, puzzling phenomena uncovered in experiments at Arthur D. Little, Inc., contribute to a growing suspicion that, in the realm of extreme cold, physicists have so far overlooked an important implication of the principle of uncertainty, and that the explanation lies in a new application of the principle.
