If b humans cannot see ultraviolet waves how can ultraviolet light be used to gather evidence of a crime?

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If b humans cannot see ultraviolet waves how can ultraviolet light be used to gather evidence of a crime?

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Dâu 2 months 2021-07-26T04:27:48+00:00 1 Answers 5 views 0

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    2021-07-26T04:29:18+00:00

    I don’t know because it’s very difficult

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