Physicists at SLAC National Accelerator Laboratory in the US have shattered the record for most powerful beam of electrons ... that causes lower energy particles to take a slightly longer path, much ...

The accuracy of the pointing error in the subreflector is of great importance to the large steerable radio telescope, so the measurement of the six degree-of-freedom ...

A laser is a very thin, focused beam of light that heats and destroys tissue. Lasers can focus very accurately on tiny areas. Doctors can use lasers: instead of blades (scalpels) for surgery to heat ...