Science & Applications reveals how vortex beams enhance optical metrology, improving measurement precision with unique ...

UV light, and laser beam. Made from the proprietary O-aluminium material, the Arkfeld Ultra is said to be extra-durable, super-lightweight and incredibly versatile. It looks swanky, too ...

IN an earlier paper1, we have described a new type of interferometer which has been used to measure the angular diameter of radio stars2. In this instrument the signals from two aerials Ax and A2 ...