Over the past three years or so the evidence has become overwhelming that the cuprate high Tc superconductors have a d-wave pairing state[1]. The measurements of Wollman et al.[2] and of Tsuei et al.[3] are especially convincing since they do not depend on the microscopic physics of the energy gap, but instead depend only on the order parameter phase. Other experiments, such as photoemission[4,...

Current optical coherence tomography (OCT) imaging technology allows acquisition of micronscale images of tissue microstructure at rates of several frames per second over cross-sectional areas of a few square millimeters. These rates and ranges are limited by the mechanical scanning mechanism of the galvonometers currently employed in optical delay lines. New developments in OCT technology requ...

We study the effect of an external magnetic field on coherent backscattering of light from a cold rubidium vapor. We observe that the backscattering enhancement factor can be increased with B. This surprising behavior shows that the coherence length of the system can be increased by adding a magnetic field, in sharp contrast with usual situations. This is mainly due to the lifting of the degene...

Nonphotorealistic Rendering (NPR) deals with representing pictures and animation in, as the name suggests, a nonphotorealistic fashion. While there is only one way to render a photorealistic image, in an NPR system we have the freedom to represent it in an unlimited number of ways. By varying the style of rendering, the image composition and the level of detail, by omitting or emphasizing certa...