(Nanowerk News) Scientists of Tomsk Polytechnic University jointly with colleagues from Bangor University (United Kingdom) proposed a method to improve the resolution of optical microscopes operating ...

This paper describes a method for computing atmospheric refraction that is simple, highly accurate, and usable for wavelengths λλ3000-10,000 Å. When compared with the Refraction Tables of the Pulkovo ...

When light passes from one medium (material) to another it changes speed. This is because the speed of a wave is determined by the medium through which it is passing. When light speeds up as it passes ...