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

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asked Aug 11, 2021 155k views

2 Answers

PedroMorgan · Answer 1 · 2021-08-13T09:43:45+0000

Ultraviolet light is invisible but it gets absorbed by body fluids like blood or semen and can be re-emitted as visible light. In a darkened crime scene, body fluids will show up and can be collected and analysed.

Juan Mellado · Answer 2 · 2021-08-17T17:07:51+0000

Answer:

Ultra violet detects the presence of radioactive substances. Ultra violet light causes substances to fluoresce and give off visible light.

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

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