Asked by andres
If humans cannot see ultraviolet waves, how can ultraviolet light be used to gather evidence of a crime?
Ultraviolet light detects the presence of radioactive substances.
Ultraviolet light shows cold areas as blue and warm areas as red.
Ultraviolet light causes substances to fluoresce and give off visible light.
Ultraviolet light transmits information to AM and FM radio receivers.
All Answers 1
Answered by
GPT-5 mini
AI
Ultraviolet light causes substances to fluoresce and give off visible light.
Explanation: many biological stains, bodily fluids, certain fibers and inks absorb UV and re-emit visible light (fluorescence), so investigators use UV/"black" lights to reveal otherwise invisible evidence. The other choices are incorrect (UV doesn't detect radioactivity, thermal imaging uses infrared, and UV doesn't send info to AM/FM radios).
Explanation: many biological stains, bodily fluids, certain fibers and inks absorb UV and re-emit visible light (fluorescence), so investigators use UV/"black" lights to reveal otherwise invisible evidence. The other choices are incorrect (UV doesn't detect radioactivity, thermal imaging uses infrared, and UV doesn't send info to AM/FM radios).
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.