Testing a new headlight before you install it can save time, money, and frustration. Whether you’re checking a replacement ...

An international research team led by the Helmholtz-Zentrum Hereon has, for the first time, succeeded in visualizing and ...

The interferometric method of locating the waist position of a gaussian laser beam is considered. The implementation of the method by a plane-parallel plate and a Michelson interferometer is described ...