Twisting the neutron wavefunction
Charles W. Clark, National Institute of Standards and Technology
Wave motions in water were already familiar in antiquity. The mathematical representation of waves in physics today is essentially the same as that first provided by d'Alembert and Euler in the mid-18th century. Yet it was only in the early 1990s that physicists managed to control a basic property of light waves: their capability of swirling around their own axis of propagation.
Public lecture by Charles W. Clark
Much of what we understand about the world comes from our eyes, which sense the colors from red to violet that are expressed in the rainbow.