… These are special polarimeters designed for determining the strength of sugar solutions. (4) Refractometers . These … the different components to be analysed is indicated by the strength of the output signal from the detector. (25) …
… usually presented on reels and may be several kilometers in length. They are used to make optical fibre bundles and … the fibres are agglomerated by a binder along their full length, or they may be flexible, in which case they are …