By Garry - 04/05/2012 21:53 - United States
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If its not real; then why do I see spots on my mattress when I shine the blacklight close to it? O.o (not trying to sound like a slob or anything, my boyfriend isn't always perfect with his "aim" so to speak..) being perfectly honest here, I didn't believe it til I tried it.
It actually does work. Ydi for not knowing how it works before contradicting the exchange student.
http://www.bvda.com/EN/prdctinf/semen_fluo.html It's pretty complicated and can NOT be done with out scientific equipment, meaning a black light from Spencer's isn't gonna cut it. So yeah, dry semen will fluoresce under certain circumstances but I doubt this exchange student was being truthful. Just sayin'.
Shine a black light on your favorite towel and I think you might change your mind, shite-wank.
Not true! Back when I was in high school my teacher (whom was a teacher) made us rub this stuff all over our hands, and look in the black light. Then made us scrub our hands vigerously in every spot even our nails. We went back and STILL could see stuff. No matter how hard or how much we washed. So FALSE!
72 - yeah, I'm guessing your teacher didn't put semen on your hands though. Certain things can be detected by black light if only washed with soap and water and are more difficult to get rid of, but plenty of things can simply be washed away as if they were never there. It all depends on what you're trying to detect.
So here is how a black light works (specifically on semen): It emits an ultraviolet light that we cannot see. Certain proteins in bodily fluids absorb the light, and almost instantaneously re-emit it. Since some energy is lost during the absorption and re-emission, it reflects at a lower, visible wavelength. The point is you'd need to be able to identify what color the dominant seminic (not sure if that's the right word) proteins reflected UV as in comparison to whatever the hell is hanging out on the surface of your skin to be able to tell if she had it on her face. Also, some cleaning agents (including those used on skin) will actually function similarly to luminol, so there is a chance the girlfriend washed her face right after she got semen on her with a particular cleaning agent, which would have allowed the exchange student to identify the semen even after washing and being on her skin.