The stability of a light sail riding on a laser beam is analyzed both analytically and numerically. Conical sails on Gaussian beams, which have been studied in the past, are shown to be unstable in ...

A team of physicists and a virologist explains how large virus shells are formed. Their work can also be used also to explain how large spherical crystals form in nature. This understanding may help ...

Revolutionary spherical solar cells are revolutionizing energy capture by means of their ability to absorb all direct, diffuse, and reflected solar radiation in every direction without requiring any ...