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Results 101 - 103 of 103 for Calibration
  • High Precision Optical Measuring Instruments
    Article - 25 Oct 2007
    The characterisation of the purity of oils, waxes, fats and other by-products of the raffination process of mineral oils is easily done with an ABBE-refractometer. This historic instrument standard is...
  • Measuring and Quantifying the Brightness of Light
    Article - 30 Aug 2007
    The energy of light delivered per second is measured in Watts. The brightness of a light source in a given direction, its luminance or luminous intensity, is related to the power of light per unit of...
  • Using Telescopes for Deep Space Imaging
    Article - 29 Aug 2007
    Many different forms of telescope exist, and these differences determine the power of the telescope and the applications they are used for.

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