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What is the name of the portable equipment available to the arson investigator for detecting residues of flammable liquids at fire scenes that consists of illuminating the darkened fire scene with an ultraviolet lamp?

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dinosaurbarn

The equipment that the arson investigator used is ultraviolet fluorescence. The mechanism in this Ultraviolet Fluorescence in which UV radiation excites chemicals in object and causes them to release visible light. Arson investigator is a part detective and part fire scientist. 

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