Language of Light 3.Instrumentation 3.1 RADIOMETER 3.1.1 Applications of Radiometers 3.2 PHOTOMETER 3.2.1 Sensors 3.2.2.1 Colour Correction Factor 3.2.3.1 Luminance Meter 3.2.3.3 Luminous Flux Meter 3.2.2 Calibration Methods 3.2.3 Applications of Photometers 3.2.3.2 Illuminance Meter 3.2.3.4 Luminous Intensity Meter 3.3 THREE-FILTER COLORIMETER 3.4 SPECTRORADIOMETER 3.5 SUMMARY
