High-precision Digital Lab Refractometer series DR6000 for applications such as mixing-ratio, quality and quantity control, plus determination of purity.
 

If we regard light as an electromagnetic wave propagating through space, it is possible to illustrate the phenomenon of "polarized light". The oscillation and the direction of propagation of the wave define a very specific plane. If you would look towards the beam you would see this wave as a line which is inclined at a certain angle in space. Regular light includes waves that are inclined in any direction of the space while polarized light is inclined only at a defined angle.