Best of the Internets

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

▀▀▀
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/

▀▀▀
Check out these Lutron products:
https://www.homedepot.com/p/Lutron-Caseta-Wireless-Smart-Lighting-Dimmer-Switch-and-Remote-Kit-for-Wall-and-Ceiling-Lights-White-P-PKG1W-WH-R/206754146
https://www.homedepot.com/p/Lutron-Caseta-Wireless-Smart-Lighting-Dimmer-Switch-Starter-Kit-P-BDG-PKG1W/205582770
https://www.homedepot.com/p/Lutron-Caseta-Wireless-Smart-Lighting-Dimmer-Switch-2-Count-Starter-Kit-P-BDG-PKG2W-HD/301783649
https://www.homedepot.com/p/Lutron-Caseta-Wireless-Smart-Lighting-Dimmer-Switch-for-Wall-and-Ceiling-Lights-White-PD-6WCL-WH-R/206828225
https://www.homedepot.com/p/Lutron-Caseta-Wireless-Smart-Lighting-Switch-for-All-Bulb-Types-or-Fans-White-PD-5ANS-WH-R/305090201
https://www.homedepot.com/p/Lutron-Caseta-Smart-Switch-3-Way-Kit-2-Points-of-Control-with-Pico-Remote-Wallplate-and-Bracket-White-P-PKG1WS-WH/314328501?keyword=P-PKG1WS-WH&semanticToken=323t00r011220000_36acc44414963ab909697567725ec5ae_1601584501254+323t00r011220000+%3E++cnn%3A%7B0%3A0%7D+cnp%3A%7B10%3A0%7D+cnd%3A%7B4%3A0%7D+cne%3A%7B8%3A0%7D+cns%3A%7B5%3A0%7D+cnx%3A%7B3%3A0%7D+cnq%3A%7B0%3A0%7D+cnw%3A%7B0%3A0%7D+cnv%3A%7B0%3A0%7D+st%3A%7Bp-pkg1ws-wh%7D%3Ast+oos%3A%7B1%3A1%7D+rt%3A%7Bp-pkg1ws-wh%7D%3Art+dln%3A%7B563900%7D+tgr%3A%7BSkuExactMatch%7D+smf%3A%7Bca%2Cbr%7D%3Asmf+nf%3A%7B1%7D%3Anf+qu%3A%7Bp-pkg1ws-wh%7D%3Aqu
https://www.homedepot.com/s/P-BDG-PKG2WS-WH?NCNI-5
https://www.homedepot.com/p/Lutron-Caseta-Wireless-Pico-Wall-Mounting-Kit-White-PJ2-WALL-WH-L01/204718234
https://www.homedepot.com/p/Lutron-Single-Pole-Caseta-Wireless-Smart-Fan-Speed-Control-White-PD-FSQN-WH-R/308675064
https://www.homedepot.com/p/Lutron-Caseta-Wireless-Single-Pole-3-Way-Smart-Lighting-Lamp-Dimmer-and-Remote-Kit -White-P-PKG1P-WH-R/206792507

▀▀▀
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

▀▀▀
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

▀▀▀
Written by Derek Muller and Emily Zhang
Edited by Trenton Oliver
Animation by Ivy Tello
Filmed by Derek Muller, Raquel Nuno, 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