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No, black lightsd mainly detect body fluids, even if theve been wiped off or cleaned.
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∙ 14y ago
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How do you detect blood on a window frame?
Use a UV light. The blood stain will appear black.
How can you use a spectrometer to detect black holes?
You can't use spectrometers to detect black holes. Telescopes are the only way to detect them.
How does the swab drug test work and how far back can it detect drug use?
it will only detect MAX 72 hrs
Can test detect drug use for years past?
No, a drug test will give results for drug use in the present.
What is a syliva drug test?
it is a drug test by mouth. they swab the mouth to detect drug use in the last 24 hours.
Can you tell if you have lice by using a black light?
I just read a medical website that says you can see the live nits under a black light. The pediatrician that wrote the article said they use it at their office to detect them. But I'm not sure about live lice.
Do saliva drug tests detect drugs in your system for a longer period of time?
No, not compared to urine drug tests. Normally saliva tests can detect usage for max. 10-12 days. But detection period will depends on drug and amount you use, last time you use it ,etc..
What method do CSIs use to detect blood?
they use luminol spray and an ultra violet light
How do you get a robot to follow a black line rcx 1.0.?
I actually use NXT but I imagine you use the light sensor to detect when there isn't a black line under it. Then steer to the left a bit and if the line isn't found, steer to the right until it's found.
Will it detect your medication if you dissolve your medication in clean urine?
Urine screens are looking for drug metabolites. The human body breaks down the drug and the part your body can't use is eliminated in waste. The urine screen will not detect dissolved medications.
How do scientists detect black holes?
They use X-Rays from the stars being sucked into them.
What are black light pigments?
This could refer to the colors that are made to use with a black light. Colors that glow under a black light.
