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  • Measuring Flatness with Knight Optical (UK) Ltd Monochromatic Lights
    Light bands formed by using an optical flat and a. monochromatic light source represent an inexpensive yet accurate method of checking surface flatness. The monochromatic light on which the following diagramatic interpretations are based comes from a. helium filled tube source which eliminates all
  • Measuring Flatness Optically
    Knight Optical monochromatic light units use a low pressure sodium light source which gives very economic. running costs and a long operating life.
  • Explaining Laser Marking Technology
    , directional output of monochromatic (single. wavelength) light. This can be understood when one thinks of two light sources; the florescent light that is. probably above your desk right now and the laser pointer you got as a give-away at a tradeshow. Whereas. both sources emit light, the florescent bulb does

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