In this lab, they use different flow visualization techniques to help detect contraband, residues, and develop trace particle detection methods. Part of this video was sponsored by Caseta by Lutron. Find out more at https://casetawireless.com/veritasium
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Thanks to Rich Press and NIST for the great visit.
Thanks to Matt Staymates for taking us around his lab and showing us the fascinating research being done with flow visualization.
You can check out all the cool work going on at NIST here: https://www.nist.gov/
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References:
Staymates, M.E., (2020). My Stay-at-Home Lab Shows How Face Coverings Can Slow the Spread of Disease. NIST. – https://ve42.co/FaceMaskNIST
Staymates, M. E., et al. (2016). Biomimetic sniffing improves the detection performance of a 3D printed nose of a dog and a commercial trace vapor detector. Scientific reports, 6(1), 1-10. – https://ve42.co/Staymates2016
NIST. (2022). Surface and Trace Chemical Analysis Group. – https://ve42.co/NISTgroup
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Special thanks to our Patreon supporters:
Bernard McGee, James Sanger, Elliot Miller, Brian Busbee, Jerome Barakos M.D., Amadeo Bee, TTST, Balkrishna Heroor, Chris LaClair, John H. Austin Jr., OnlineBookClub.org, Eric Sexton, John Kiehl, Diffbot, Gnare, Dave Kircher, Burt Humburg, Blake Byers, Evgeny Skvortsov, Meekay, Bill Linder, Paul Peijzel, Josh Hibschman, Mac Malkawi, Mike Schneider, John Bauer, Jim Buckmaster, Juan Benet, Sunil Nagaraj, Richard Sundvall, Lee Redden, Stephen Wilcox, Marinus Kuivenhoven, Michael Krugman, Cy 'kkm' K'Nelson, Sam Lutfi
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Written by Derek Muller and Emily Zhang
Edited by Trenton Oliver
Animation by Ivy Tello
Filmed by Derek Muller, Trenton Oliver, and Emily Zhang
Additional video/photos supplied by Pond5 & Getty Images
Music from Epidemic Sound
Produced by Derek Muller, Petr Lebedev, and Emily Zhang
You're not a real guy until you fart into one of those laser walls.
@tobiahdyess2782 Says:
Title of the video was incredibly misleading but the video was still interesting.
@floydoutdoors5796 Says:
Did any one see all of the energy and gases come out of the cylinder gap? Holy cow. How fast do you think it is and could you calculate PSI?
@WeHaveACityToBurn Says:
Science Behind Dogs' Sense of Smell = 10% of the video
Other topics that have nothing to do with dogs = 90%
@broadway_blvd Says:
Thanks
@Haze1434 Says:
The problem with DNA analysis becoming too good is that anyone could be said to have been anywhere.
You so much as walk past someone and they're picking up particles of you and transferring them wherever they go.
DNA analysis for crimes shouldn't rely on a few particles of someone's DNA, it could get there through a myriad of ways.
@olivekosheluk Says:
the fentanyl comments are incorrect
@ScytheSalinas Says:
This video made me nostalgic for Beakmans world 😅
He would be a great host for a kids science show
@Dev1nci Says:
Wana know how far gases and vapours float, watch someone hubbly-vaping in a car. Makes you scared to breathe 😄
@111-o6p9i Says:
Yea dude, Brad Pitt is awesome
@ganesh.sivakumar Says:
Wait that mirror lets you see Aura 😮
@galaxophone Says:
I'm an entertainment laserist. This is so dope <3
@increase9896 Says:
wasnt much about dogs if im being honest
@disabledveteran1419 Says:
this guy's got a hell of a hairline and he isn't even using it
@kauaiaguya Says:
do these nerds have a hunch that law enforcement is not gonna use this tech for good? Or are current events giving us good vibes about this situation. genuinely concerned viewer question. I clicked because I am fascinated by scent but 90% of this is kind of dystopian.
@sircrackboi Says:
It’s all about safety 😂😂 yea right, not about total control of every single particle of our lives. Gtfo
@lisad6106 Says:
Why does your dog not find you hiding behind the door? Do they just get used to you?
@Alexandruthewolf Says:
whats wrong with a pig ? same mechanism...
@SirjeViise Says:
I really hope this technology is being used for the greater honest good
@danm7596 Says:
Great video as always but misleading title.
@OnNightmareRadio Says:
15:16
Every police department in 2026
@sarcasticundead6087 Says:
nature is so much smarter than us
@lex_DO Says:
Dogs > cats
@jon1380 Says:
I love how much passion this guy has. He seems to love nerding out on this stuff, but he can explain it so well. One of my favorite videos.
@jasonburch1933 Says:
This is great... but where do we draw the line? When does this become a privacy concern? It just makes me think about the "patriot" act. At what point are they basically going through our mail or in our homes?
@chrisschryer Says:
Cool video but I came here for the dogs and was sorely disappointed.
@KylDylVol2 Says:
You know when technology is developed under the guise of “public safety and security” it’s gonna end up with the police
@benrice6178 Says:
Disappointed there was quite literally almost nothing on the physiscs of a canines nose
@benrice6178 Says:
This lab man thinks hes a lot smarter than he is
@woofta Says:
8:30 minutes in and still banging on about bullets. Bye
@apexRagnar Says:
Notice the like button effect
@johnviera3884 Says:
17:50
I could vape through my mask
And I could see all the smoke go right through it
Of course an n95 mask is way better. They are expensive and uncomfortable
@PuritySpinzZaySnareChopSnare Says:
the bullet is traveling at approximate Mach 1.86, which is roughly 2,092 feet per second or 638 meters per second
@VorpalVods Says:
This just so happens to be how you make killing machines too… strange world huh 🤔.
@UserName-q4i5d Says:
in Germany they use pigs because they have a better sense of smell
@naturemann6037 Says:
Masks don't work against pepper spray let alone viruses
@UpfrontandDirect Says:
My nostrils exhale laminar air jets sir!
@shandaman7452 Says:
Intelligent design, not evolution.
@cri52fer07 Says:
This was supposed to be a video about dogs and turned into weird covid propaganda.
@Paul-bd7fe Says:
Is that Murray from family guy
@Statikk Says:
14:14 no they’re not… that’s not how fentanyl works. you’d have to be inhaling upwards of 2mg of it to die.
@rocketpunchgo1 Says:
Why is he so coy about saying AFT and FBI?
@yannickbr4383 Says:
Ever since i was a kid i sometimes notice a very faint (what i called it) plume of smoke coming off people and some objects. Could it be that human eyes have a microscopic amount of that vision too?
@IRumburakI Says:
All this high tech to figure out that air trapped inside a box would escape through a gap.👌
@quincyhofstede Says:
Need to take one of those mirror setups to a haunted house lol
@tihzho Says:
6:44 Interesting but what does this have to do with dog's smelling?
@josefalanis Says:
What's this mumbo jumbo got to do with dogs lol 👎🏽
@RolyRobertson Says:
Cool, like all of these videos, but why not do a video about dogs noses, given the title, rather than about drug /law enforcement in the USA?
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