The photometer is a device used to measure the intensity and strength of electromagnetic radiations. It can identify and measure in the range from ultraviolet to infrared while also including the visible spectrum. A colourimeter is a device used to measure the wavelength and strength of electromagnetic radiation in the visible area of the respective spectrum. Are you wondering how they work or are you thinking about the materials used in them? This PPT has everything right here. Give it a read!

Martin Joseph

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