This is the first time I've seen Derek is completely quiet almost throughout the entire video and not having to ask many questions or prompt the speaker and explain it to the viewers because Oh My God! The way Matt explains this is almost like listening to a cinematic story teller taking you though some of the most mind blowing scenarios and you are actually visualizing in your head the vivid details he's explaining! He's like the OG CSI!
These NIST videos have been fascinating. There’s nothing better than hearing straight from the experts who also happen to be engaging and interesting people!
@@gonelucid The guy behind the camera is the usual host and the owner. I don't know much about the guy who does much of the presenting here, but I assume that they're just a researcher in some government lab.
Matt was 100% right about most people not sitting down and read a scientific journal. Your channel is proof enough for most (I feel like). I know I have never been like "Hmm. How do I measure the tiniest forces in the universe?"... but I still watched your entire video. And like he said, the problem isn't the science itself, it the communication. Being able to actually SEE the effects/proof of what is being talked about is a much easier way for media to convey their information.
You with Kurzgesagt are in my opinion the overall best scientific educationnal channels ever, and I feel so priviliged to be able to watch those videos for free.
kurzgesagt is not very objective, they say what their sponsors want them to say, and it so happens that most of their videos are sponsored by Gates. some ppl on yt made videos about this
@@thejericho I mean yeah, the one the man made viruses was pretty shady, I certainly did not like that one. But there are some videos that are not deserving the hate they get, and even the most controversial before this one were quite well argumented and were were overall well put together.
The laser sheet method definitely makes me think of the moment a sun light beam enters my room and I first see small dust particles floating in that beam.
It's exactly the same effect, just with an incoherent light source. If you're not trying to measure 3D velocity but rather just visualize particle patterns, it doesn't matter what type of light you use.
With the laser sheet, I wonder if using several different laser sheets of different wavelengths stacked closely together, you could analyze the color of it to model the flow of the air over the table in 3 dimensions.
Had the exact same thought. Oddly I am very familiar with this specific visual phenomenon because it occurs naturally in my home on a sunny day. If you have a dark room filled with smoke and there are rays of sunlight making it through your black curtains then this effect will be very clearly observable.
@@DKFX1 Ever since I saw how much dust particulates are hovering in my seemingly clean room, I was never quite the same. Even in our most hygiene, we're filthy 😄.
@@RikKoedoot Rapidly pule them or alternate the wavelengths and you could easily make probably a 1 meter long one with spacing of like 10cm or less per laser sheet at reasonable refreshrates depending on pulse lengts and camera sensitivity. Would be cool to have a 3D real time particle map at high resolution to track air current but I gues just simulating it would be more efficient
i can't help but think the guy is a liberal wimp because of his prey eyes, his sleeves being short like that and him not wearing anything under his sweater
Год назад
Absolutely agree. Its mesmerising how well done this science is. I know this is generalizing but i kinda feel like this is how science should function.
This guy speaks better than 90% + of RU-vid site hosts, including the one here. Example, he doesn't throw in the word "like" uselessly as this host, and most others, do.
@@dcamron46 It is the end of the year, and quarter so if companies see that they have some yearly budget left, they can use this money for advertising.
That dude absolutely loves what he does.. and takes huge pride in his work. Not to mention. He is an awesome presenter/teacher.. hope to see him more on the channel
There’s an art to distilling a technical subject into just the right amount of detail for a layman with extra detail sprinkled in at important parts for those with a deeper understanding. It’s a balancing act between providing enough detail without overwhelming those not familiar with the topic. Matt absolutely nails this and it’s always cool to see professionals in other technical fields using this strategy as it’s something I use frequently in IT!
I love now knowing the intricacies of the dog nose. it’s always been known (to me) that dogs have amazing smell, but to see why gives me a whole new appreciation 🐕.
Its amazing how much elegant designs there are in nature, from the Japanese train engineers who modeled train fronts after bird noses to reduce sonic booms and noise, to this, its just gives you hours of stuff to think about.
I “discovered” the laser light sheet long ago. I was sitting in a bar in my early 20’s. Smoking a cigarette. It was daytime, and the sun was shining. The bar had blinds on the windows, and sunbeams were shining through, creating “sheets” of light. My cigarette smoke made amazing swirling patterns in the light. Only took me nearly 20 years to become fully obsessed with fluid dynamics and visualizing the processes.
Some years back I took a tour of this very lab at NIST. I saw Matt Staymates and his research division lead Greg Gillan. They were working with 3D printed dog nose for explosive detection back then and the way Matt explained this to us was cool. Fascinating.
My capstone project in university involved using laser light sheets in front of fume hoods to check flow and test their effectiveness and make sure fumes weren't escaping. That used 3 lasers, red, green, and blue, at different distances from the face of the hood to visualize multiple 2D cross-sections and better capture a pseudo-3D visualization. This video brings back memories of that. Really cool to see the laser light sheet technique being used in all sorts of forensic and disease transmission research applications.
Imagine using this for factories and workplace safety. Hazards caused by house fires or burn pits. The math and physics of airflow is fascinating and making it visual really hits home. Do dogs have the best sense of smell in animal world? What animal has the best hearing, the best vision?
It's always really hard to answer a lot of questions like that about nature because everything is so specialized. For instance, by our visual standards, dragonflies have terrible visual resolution, but they have a 90%+ success rate for hunting, and have also remained relatively unchanged for hundreds of millions of years. Another example is the mantis shrimp. They have the widest visual spectrum of any animal so far and are the only animal that we know of that can see polarized light.
@@ThaBeatConductor Firearms as well. Military types using firearms regularly are exposed to incredibly noxious fumes as was demonstrated. Designing guns that redirect the gases away from the shooter will greatly improve this.
Eagles and falcons have often been said to have the best (meaning sharpest) vision, being able to spot a rabbit in grass from a couple of kilometers away or something. Bears have a notoriously good sense of smell, having a nose size advantage over dogs. I don't know about the best sense of hearing, but big whales have been said to be able to communicate with other from different sides of the world.
@@usmh The one about whales is less to do with their hearing and more to do with how sound propagates through water, especially at certain temperatures and pressures. That and whale calls are super mega loud.
this technology is kind of scary for me. I am a DJ, and let´s not get into if I use substances or not. Let´s focus on just me being on stage, people snorting drugs left and right, even if I didn´t touch any drugs, these test would show me as contaminated. The question is, how do we differentiate between just a bystander, and a trafficker, or a manufacturer. If they just start screening everyone, i bet your ass, every single person who enters a club/bar is going to be contaminated. I don´t like this idea very much... for bombs, yeah go for it, but for substances, they really need to set some standards to avoid false positives...
Guys like Matt are what is necessary to get folks excited about science again. He does not talk down or patronize like many science communicators. He is not afraid to be seen to get excited about what he does.
yeah he almost seems trained, like his job is to convince people of his science more than actually doin science, i wonder why anyone like that would be employed by that company and not a larger group that would fund a talking head, idk weird huh lol lmao xd hahahaha he's very good
Myyyaahhh but the costs involved and manpower / hours needed to develop AI to _replace_ the manpower in getting all of that organised is (still) pretty unfeasible. Then there's admin, 'some incompetency', conflicts of interest, funding, etc. etc. Not to even mention any counter-movements or all that work getting cut short for whatever reason before it gets a chance to properly be launched Whenever you think about something scary and all-encompassing like that, also think about how "clunky" most things are we do on a general basis... and then try and marry the two concepts x)
@@jasondashney that's pretty true! Then let's keep paying attention and using the tools at our disposal to advocate for what we believe in, and fight what we don't...!
This guy made something so complex, seem so easily understood. Goes to show teaching methods and the teacher correspond so much with knowledge intake - loved it
I'm amazed at the enthusiasm of all the scientists at NIST you have captured. This whole run has been so informative about careers in STEM, absolutely fantastic stuff. You and other educational creators are the best of internet.
So far one of the best informative videos on your channel! I mean the expert really was explaining everything instead of giving just bits and pieces and then derek (veritasium) helping us understand through his interpretation and understandings. That's not bad either,and veritaisum is the person to credit for all the info and experiments he brings to us, no doubt! But yeah we all agree this one hit different because the expert was really thourugh to detail every of his experiment and explain the scenario where it could be applied. Amazing great job both of you! Need more of such videos, and you may also collab with him for a part 2! That would be so great
Towards surveilance society we go, soon your farts will be analyzed in real time, *pling* you will get message that your health insurance has been terminated.
@@Shrooblord do know that ISO stands for International Organization for Standardization because La France. but that must be the most expensive party there is when every item must be a ISO item.
i started to grow carolina reaper last year and i am very familiar with these dust movements by now, because when you dry chili and grind it to a powder, you always have these particles that stay in the air. and you dont want to breathe in this stuff, believe me xD i didnt have a fancy setup like this, but i used a bright light to illuminate the larger particles, so i could figure out how to move in a way to not accidentally pull these particles towards me ^^
wouldn't something like a fan help with this issue? preferable outside/towards the outside so that those particles will get pushed away? or the opposite something like a vaccum cleaner to suck in those particles?
I'm a chef, and a few weeks ago the other chef threw a handful of blackened seasoning on a piece of fish, literally seconds after one of the exhaust fan belts came off quietly. I walked right into an invisible cloud of it. In my eyes and up my nose. 🤬
@@in5aneguy597 that was my first guess as well, but fans create too much turbulence and then the particles disperse evenly, making it hard to breathe :D i settled on gently waving the air away from me after opening the mixer unit, while having an open window nearby. of course, a professional ventilation system that just sucks in the air immediately would be best, but that is not available for me ^^
Fascinating video! But a point of clarity, (medic here, for reference) his comment about Fentanyl isn't accurate; it takes a significant amount of inhalation exposure for fentanyl to be absorbed intranasally - although it looks like a lot in the video, it's still highly unlikely to be an exposure risk.
espescially to the soryt of person who would take that job, someone likely to have a very high tolerance from repeated exposure prior to taking the job (ie a veteran user)
You can absorb it into mouth tissues as well as into your lungs for direct exposure though. Most people breathe at least partially through their mouths, not solely through their nose.
@@rdizzy1 And that somehow makes up for the giant dose neccesary to ovedose in the first place? The idea that one could overdose through exposure like this is simply false, no two ways about it. Sad to see Veratasium perpetuate such copaganda.
@@rdizzy1 the surface area of the lungs is extremely large and made specifically for transfer into the blood stream, i'm no expert but i would think any absorption through mouth tissues would be negligible in comparison
I'm studying analytical chemistry, and this series has filled me up with so much joy! The beauty and ingenuity of quantitative analysis often gets understated in a chemistry degree program -- with the emphasis being on learning how to use the tools, rather than to understand them. Rich Press is an incredibly talented instructor.
Derek’s work is so well done, even when something doesn’t seem that interesting (going by the title), I always end up learning a lot, even if I think I know the topic. Thanks for posting such high quality content Derek!
NIST is most likely the most under rated yet critically important government institution. Great work from Standards definition, generation through true scientific research. I hope Veritasium does more with this organization.
Dude, this guy was explaining so well and in such an entertaining way, I am glad you cut and added so little and kept so much original footage. Nice edit!
@Aluzky I can infer the reason is that wheat flour, a fine dust, could get on everything as they show here with talcum powder, thus getting gluten into celiacs intestines. Celiacs have a genuine diagnosed medical condition that even the tiniest amount of gluten can cause huge inflammation. I suppose you could not see that connection. Alas.
“The FBI gathers evidence. Once evidence is gathered, it is turned over to the Department of Justice. The Department of Justice then decides whether it has enough evidence to present to a federal grand jury. In the case of the 1998 United States Embassies being bombed, bin Laden has been formally indicted and charged by a grand jury. He has not been formally indicted and charged in connection with 9/11 because the FBI has no hard evidence connecting bin Laden to 9/11.”
Wow - Matt is one of those rare individuals that is really smart and great communicator. I would love to see more videos with him explaining things. NIST appears to have some great people working there!
Expanding on the dark edges showing a louder sound; you are seeing density. Given air is homogenous, the stronger the shockwave, the more air it can smash into a small space. With a good control sample and good resolution, you could create a direct pixel gray-scale to decibel to psi conversion at w/e resolution your setup can record at. Pretty amazing when you consider the setup in the video had enough control to be replicated with ease, really gets the imagination going knowing this kind of stuff is being used and shared across the internet, another amazing find good sir. On a side note, I love the beautiful patterns inside the dark ring. Strikes me as strange that a 2d Slice of this 3d wave looks a lot like a ripple you'd make in the water.
You've talked about how you change video thumbnails and titles before and in this case it really worked on me. I've seen the thumbnail and title about the artificial dog nose and while I'm always interested in your content this didn't really got me to watch it, because I was expecting some kind of information about how good dog noses are and I felt like I likely already know what you were going to say, so I didn't click it. The title about seeing invisible air flow and the laserplane image got me though, because that just seemed way more interesting and more likely to be new information to me. Good choice to use the laser plane image by the way, since Schlieren images may not have gotten the click from me, because I feel like I've watched a lot of videos about this technique already. It's interesting to see the psychology of changing thumbnails & titles work on myself. Wish I could know how the different thumbail & titles played out for you on this video and if I'm a mainstream or niche consumer in that regard.
This was so cool and the lab presenter did a phenomenally cool job with one tiny caveat - the whole "minor fentanyl exposure is dangerous" thing is a myth. As an experienced EMT with a biochemistry degree, this is simply not true and a weird urban legend perpetuated by police departments. Stilll, this video was awesome. All these examples are so much cooler than the stuff I learned in physics classes.
I've always found it strange that all these people die with fentanyl in their system and everyone insists it was tainted cocaine with no other option. I don't know what that could mean, but it's something I observed and thought was weird.
I believe he was more referencing that if the person working in the production of fentanyl does not have a mask on, it would be lethal due to the high inhalation exposure throughout period of time. Especially in the video where the person was handling large amounts of particulate matter, not what an average addict would have at their disposal.
Umm, 2 milligrams of pure fentanyl is considered more or less lethal. According to Google 2 milligrams = 7.055 × 10⁻⁵ ounce That is a small amount. I doubt you have too much experience dealing with addicts handling pure fentanyl.
Umm, 2 milligrams of pure fentanyl is considered more or less lethal. According to Google 2 milligrams = 7.055 × 10⁻⁵ ounce That is a small amount. I doubt you have too much experience dealing with addicts handling pure fentanyl. To visualize that, it's 4 grains of table salt. And that kills people. I don't think getting 2 grains worth in or on you, would do you any favors. How much did that degree cost? 😄
I've seen this imaging technique explained several times and it still looks like a magic spell. How does someone look at light and think to chop it with a razer blade? Incredible. Loved the video!
It's an interferometer. The razor blade edge causes diffraction. It's not used to block light, it's used to measure phase differences caused by small changes in the index of refraction in the sensing region.
This was easily one of the most interesting videos I’ve seen in about 15 years of watching RU-vid. This struck directly at the types of things I think about all the time - micro fluid dynamics - super super interesting. Thanks! Lucky enough to have visited the NIST lab in DC (for energy related topics)
@@imveryangryitsnotbutter Not if they are stuck inside of the house. It’s also probably easier for them to use their strong sense of smell. I would imagine it’s similar to how we would try to find the source of a smell in our homes. Like if someone was cooking, we could tell by smelling it through the air.
My theory has always been that they have a very good inner clock. My dog gets dinner at 6pm and he starts nagging me between 5:30 and 6, irrelevant of the sun since for example sunset is at 4pm now.
Most animals have a very good body clock (my cat will pester me for food at almost the exact same time every day with about 10 minutes difference being the furthest from that time) (which is 4:30)
I just came from watching clips from the show “the carbonaro effect”. And the way this guy explains stuff is exactly like the magician in the show. It’s freaking me out hahaha
Hey Derek, how about some Veritasium about the measurable harms perpetrated by prohibitionist regimes? imagine if all the resources and mental efforts that go into prosecuting people for self-medicating with illicit drugs were instead directed toward improving public health and early childhood education.
This video was absolutely incredible, I got kinda sad when it ended. You can really feel Matt's enthusiasm and how much he loves doing that stuff. Amazing content, Derek
I was watching this on my TV and had to go on my phone to type this. But apart from this being an awesome video, that dude has amazing presentation skills. His enthusiasm and knowledge just captivate me and he hasn’t lost my attention for a second. Great find Derek!
This video is amazing. It's not only very specially informative, but the enthusiasm behind science is incredibly infectious. So, thank you to you both. Rich, you are a great educator as well as you Derek.
I remember observing my dog doing this. We called it motor mouthing because they also open and flutter their mouth when doing it. If you do it yourself you will smell things you wouldn’t otherwise notice.
Yeah I actually started mimicking this method to try and sniff out feint smells. It really does work, although you definitely look weird while doing it 😅
Hey, can you make a video explaining how astronomers calculate the movement of a celestial body. Especially the orbits, velocity, the position at certain time. I am very interested in this. 😄
This is one of the most beautiful Veritasium videos in all sense: a lot of science in it, beautiful visualizations, good research, good explanation... just amazing !
Question for anyone: during my first ever total solar eclipse, I saw waves appear as shadows on the ground just prior to totality. Am I assuming correctly that because the sun was a smaller, more focused point of light that I was seeing a shadowgram of air current that is always there but not visible because of the sun's normally larger light source?
Biomimetic Design is one of my all-time favourite things, because you're taking systems that evolution has refined at various scales and then implementing them into technology to vastly improve its effectiveness in ways that we'd never be able to do with just normal iterative testing or conceptualization.
Evolution does not strife for perfectness. It strifes for adequateness. When some feature is good enough to overcome the selection pressure, there is no more pressure to evolve and the further development will be stagnated. In school terms, more often than not this results in minimum grades required to pass the class, but far from actually learning the subject and becoming good at it. While we find very good and novel solutions to some problems from nature, it's not as much that the nature does things good as it is that nature goes around solving these problems very differently than humans are used to think, and due to sheer amount of different solutions in nature there are bound to be some good ones. This is the case of infinite monkeys with typewriters. When we find solutions from nature, it's more like combing through the text those monkeys write until we find something good.
This guy is a great talker and teacher, I’ve learned so much on this video and was entertained the entire time, glad to see the technology used behind the scenes get a spotlight and be appreciated by the public
This was the BEST video by FAR! Absolutely amazing job, it's been years since I didn't skip through a video or watch at x2 speed on RU-vid in general, but I was so captivated the whole time through that I couldn't stop watching in absolute awe. So here is a comment for the algorithm, we gotta spread this.
This was one of the best videos you came with Derek! Love that guy, it feels like he's so passionate about what he is doing. And his explanations were so smooth! Love it 💜
It's always appreciated when science is said and then spelled out for the layman. Matt is really good at that; compliments for letting him do his thing in your edits. Amazing video! Here's to hoping you can do more right up this avenue
I’m happy to see so many others also experienced awe over the experience of listening to Matt. I was wowed by how enjoyable he was to listen to. It drew my attention, specifically.
I worked at a video store about 20 years ago, and the guys who worked there would play "the smell game". They'd take newly returned dvds and squeeze the air out of the case to smell what the person's house smelled like. I thought it was kinda weird
@@bobbylee7801 Dude, buy some liquid ass on amazon, and take it to walmart's candle section. I've actually taken women on dates to do that, it's hilarious. We usually left in tears from laughing
With risk to bore you, I worked in the Security industry responding to false Alarms in the night. After thousands of service calls, I would have the coded envelope ready with the keys and go in. As I stood in the doorway, I would close my eyes and breath. Surprisingly, I could visualize where to find the cause of the disturbing "Emergency"
@@bobbylee7801 We saw 'Pet Rocks' in 1975 and lots of silly fads making a killing over the years. Is it time to Market packaged Farts? Oh. It has already been patented. Oh well .. Here's mine. Brappp!
