The Home Scientist 006 - Forensic Fingerprinting I: Iodine Fuming
Use a tiny amount of crystal iodine (or substitute drugstore tincture of iodine) to reveal latent fingerprints on paper and other porous surfaces. Iodine fuming is the oldest method for revealing latent fingerprints, and is still in very wide use by professional forensics technicians.
More information: blog.makezine.com/science_room...
Forensic Latent Fingerprinting Kit: www.makershed.com/ProductDetai...
Before anyone comments, a note about pronunciation. Many scientists pronounce iodine as eye-oh-deen--by analogy to the other halide elements, fluorine, chlorine, bromine, and astatine--rather than eye-oh-dyne. Many people born before 1940 pronounce it eye-oh-dinn. Any of the three is correct.
Пікірлер: 25
You have a Morgan Freeman tone in this video, I can't be the only one to hear this, was extremely calming whilst I was watching this hearing your instructions as it were, neat video aswell I would've loved it if our science at school did some more practical stuff when I was there, they just left most of the heavy lifting to computers, got to dissect some stuff though, You've a new sub :)
sir ur video was really helpful .. thanks!
awesome, thanks for clearing that up.
Cyanoacrylate fuming is a possibility ('Super Glue') - or the application of photoluminescent nanocomposites and a UV source. The likelihood of getting any usable material depends upon how porous the rock and how recently it was touched. Frankly, you're probably not going to be able to get anything. The pores in the material disrupt the the print - sort of like painting over a rough surface.
I love your voice
Is it okay if you use the liquid iodine instead of the crystals?
could it be fatal if I accidentally inhale the iodine vapour?
I've bought the drugstore tincture of iodine and i wanna know how much ml do i need to do the iodine fuming i have tincture of iodine 10% of iodine can you help me
wow..perfect!
can anyone tell me why this happens?
My left ear is happy
ninhydrin is carcinogenic isnt it, and i comes up with a purple colour. we use it to visualise amino acids.
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Hi Robert. Writing for a friend. Why does the solution taste so bad when swallowed in large quantities? Also, it seems to stain the eyeball. Please respond. Thank you.
@hillyheights-pn6qs
11 ай бұрын
Can you tell me please is thermal paper also needed to clean from blanket or hot blanket or water?
his voice puts me to sleep thumbs up if this happens to u
hi how are you
oh right, i thought it did because it had a risk R45 on the paper we were handed out for our lab work. thought i better be safe than sorry.
1:24
this is my home work
I wonder of this guy is alive now🤔
ok, but I still gonna put on my chemical mask.
sus af
You say iodine really dumb