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Destin, this is some serious hardcore science! AWESOME!

One moment in my life I was eating spaghetti and I slurped a single noodle as fast as I could and I got whipped in the face by the end of the noodle. Thanks to this data I understand now why the spaghetti noodle acted as a bull whip.

That ladies kids are the most disciplined kids on Earth.

In case anyone wonders about the strange costume in the german paper at 4:11 😂 ...this is traditional carneval in southern germany, to be exact in the Region around the Black Forest. One key element in this tradition, besides the costumes, is the whip cracking to scare the winter ghosts away. Greetings from the Black Forest, Germany😉

This is why I love the internet. You can take something as unbelievably complicated as a supersonic physics and make a compelling video simple enough for a common person to understand. Not only that, but you're showing things that are likely the world's first observations, and sharing them with the entire world

"Let's make a KZfaq video!" "Let's publish research!!!!"

Honestly, I'm still just impressed that people figured out how to make the whip do that hundreds if not thousands of years ago. And only NOW do we understand exactly why it does that. So cool.

"She's good with whips" Me: "Continue"

I've been subscribed for almost 4 years I believe and this has to be the most interesting video you've made in my opinion. Keep up the good work!

This is so freaking cool.

This made me realise that Einstein would probably have a KZfaq channel too explaining science and publishing new scientific papers

I love how... iv been watching SED for years... and a question pops in to my head, and I youtube search it... and here you are! Perfection.

OMG! 40 years ago a girlfriend convinced me to join her in an evening class where we made our own braided leather bullwhips from scratch. We started with tanned hides, sliced them, shaved them, dressed the strips to precise tapers, oiled then braided them. It took a team of two about 20 hours to make both whips. Then we got to learn various techniques, from gently capturing things (we learned to wrap our whip around a balloon without popping it), to wrapping hard enough to break things (my favorite was sidewalk chalk, which exploded). But the best part was learning to crack our whips. We started by simply rolling the loop of the whip down onto the floor, where it would snap when the tip smacked down. Then we gradually added more energy, a truly small amount at a time, until it started to crack in the air. Large, graceful motions that finished with a crack. Then we learned quicker moves that brought the snap a little closer in, where we learned to place it where we wanted it. I envied the folks who were ambidextrous with their whips, because my right arm was getting ready to fall off. We wanted to see if we could capture the motion of the whip by cracking it horizontally over sand, so a few of us took our whips to the beach and tried to crack the whip horizontally within an inch of the sand. Almost impossible to do, but once in a while we did notice a puff of sand happening well before the whip had reached full extension, from a part of the whip not in contact with the sand. If only... Fast forward 25 years, and I was on the team making a camera that could take 100,000 frames per second (the Redlake HG-100K). When the third alpha unit became the first to work at full speed, we searched for targets that would both test the camera and thrill Marketing. Popping a balloon wasn't nearly fast enough. I thought back to my days with the bullwhip, and we immediately went out and bought a few. Despite dumping a zillion lumens into the field of view, nothing useful came of it. (Clearly, using Schlieren photography and capturing the shockwave is crucial.) What we did wind up doing was pointing the camera at the HID bulb in an Epson video projector (torn from the ceiling of a conference room), where we captured the most amazing video of the arc wandering between the electrodes within the bulb envelope. We put a GIF of the sequence up on our website (this was before KZfaq), which caused some small level of buzz online. The next morning we received phone calls from the Japanese executives of both Epson and Panasonic (the maker of the bulb). It turns out that arc wander was the primary factor limiting projector sharpness, so stabilizing the position of the arc was crucial to gaining any benefit from using higher-resolution LCDs. Two days later they were in our offices for a demo, and left an awesome pile of money behind when they departed with our very first beta unit. Their problem was that high-speed film limited the rate of innovation to one test run per day, with the film developed overnight: Our camera allowed them to do a dozen runs every day, leaping their R&D further ahead of the competition. You may have noticed I mentioned we had to go out and buy some bullwhips. My treasured handmade bullwhip had disintegrated within a year of making it: Evidently, the tanning process used on the leather wasn't compatible with the oil we applied to it. It sure was fun while it lasted. Now you two have got me wanting to make another one!

>Goofs around with a high speed camera. >Accidentally gets a PhD in whip mechanics.

I hypothesise that the knot that helps to start the force of the air breaking, leading the waves, is just enough mass change in a quick transition towards the end of that whip that is the ultimate catalyst, seeing as how the wave suddenly goes from very little mass to a sizable addition of mass, and the frayed ends are trying to catch up to the equilibriam of pressure exerted by the wave as the sound barrier is broken. Great work on this, my science bug is wanting more. Subbed for awesome whip cracking science!

Love your channel so much. Just a simple TY.

4:54 destin: learning stuff

This video was absolutely fascinating, and I feel privileged to witness this development in human understanding. Had a moment in the video where I said, “wow, that’s a lot of doctors!”

3:10 there's that look again. I see it so often in your videos...that spine tingling experience of discovery. I love it!

Great work, Destin!

I can break the sound barrier with a bath towel.

Love this channel!

Loved it!

best example that everyone can relate: when you slurp on noodles and when the end of one is right before your face, it smacks you

Hang on I just realized something.... the whip in slo mo looks exactly like the dancing inflatable guys outside of car dealerships.. SOOO if the inflatable moved fast enough... oh god SUPERSONIC INFLATABLE MEN

really great work! You should totally publish this!

when you do this, there isn't a better channel out there! Fascinating and counter-intuitive!

4:10 “there’s a dude in it that looks like a moose wearing bells and a clown suit” EXCUSE U HE’S CLEARLY A REINDEER 😤🎄

9:39 dabbed so hard he teleported.

Great video 🔥

I love how this escalated from messing around with high speed schlieren photography to writing a groundbreaking paper on whip dynamics.

really great Thanks for taking the time to make the video, it was really interresting......

Amazing!

This is the type of youtube channel that deserves ad revenue and sponsors because they put work in their videos, real work. Videos that are compilations of other videos do not deserve revenue

Asians: It's just a belt, it can't hurt anybody. The belt:

I like your content. It makes interesting and difficult science accessable and understandable for many people without losing quality in content. I'm not a physicist but could it at the last moment when the end of the whip is like being dragged its because it breaks the sound barrier and therefore encounters less air resistance. I like when the barrier is broken the forces are not held back and thats why it seems like its getting pulled. Would love to see an update on the whip science :D

Cool video!!

Contributing to research and making KZfaq videos? Dope.

4:19 "I'm limited by the technology of my time"

I love this guy and his findings!!

One of the best ones yet! Amazing work @smartereveryday !

Love the video ...

I love that scientist youtubers are friends together and not opponents.. but of course, they’re smart

The guy in the wierd suit is part of a celebration in Southern Germany. It is called 'Alemannische Fasnet'. In this tradition, people gather every spring around February for parades. The people in the parades usually wear historical costumes. Part of this custom is to make a lot of noise with bells, ratchets and sometimes also with whips.

That’s so cool!

thank you this video 🌸

That was awesome! A little channel called Peninsula Seniors has a bunch of lectures from quite a few SR-71 pilots with their personal stories of flying the plane. Really good stuff for Blackbird fans.

!!!! What the heeeckkk!!!! I thought this was going to be an easy answer! Then the video kept getting deeper and deeper as the mystery kept on raveling and unraveling and I got more and more confused as I realized that I know less and less and I've never been more excited to know that I know nothing! I had NO idea that a whip could be such an incredibly beautiful and complicated piece of artistry. Think about that! We have jetpacks and lasers and cars in space and still do not understand how whips work. This is so exciting and cool to me that I can't even explain it.

Yo ! This is amazing content.

Merci le gars dans les commentaires de la vidéo de dr Nozman

This was actually a lot more interesting than I thought it would be.

9:02 **wears goggles in car for dangerous demonstration**

This was awesome never thought whips would be so interesting or come up in my recommended lol

Absolutely love the enthusiasm here.

We went from Smarter Every Month to Smarter Every Week. In a few years we’ll finally have a literal Smarter Everyday

“I think all this whip business is a reason for you to explore *pause*” Hold up now

Fantastic guys, my husband use to crack whips all the time on his farm in Australia when he was young, ( his 63yrs old now ) and always wondered what caused the crack noise, and now he knows 😊. Great work. 😊😊

Love this 🙏🏻😊

Interesting, now how can we apply this to space travel.

I clicked so fast my finger broke the sound barrier.

Such a beautiful study of such a simple mechanism :)

Dude that's some of the coolest footage.

Well, I learned something

3:07 I love how they both freak out at science at the same time lol

Cool piece

Merci Dr Nozman

3:40 Oh wow, you can actually see the shock wave initiate. You're literally seeing it as it goes from subsonic, to transonic to supersonic, right? That's incredible

Fighter Jets: we can break the sound barrier THE whip: well That's cute

incredible episode

This is so informative

I'm watching this thing develop and grow... It's amazing

The moment you realized you just watched history being made.

What a great video as always! you had my sub from the first vid I ever saw!!! She is incredible!

For me, one of the best experiments you did.

Wow, a perfect video, even the plug for Audible was informative and captivating. Love your work, and the fact you seem to enjoy it so much. Keep it up.

When you kinky and scientific at the same time😏

I love it!

This video is awesome

This is the sound when your Mexican dad takes out the belt

0:33 really thought he was gonna say “sadism”

After watching sooooomany videos of u......i think u deserve a price...something to honor your work for us. thx man

worldless!

My fellow spaghetti eaters know aalllllll about this. Schluuuuuuuuuuuurp... SMACK!

I'm nerding out so hard on this video! Awesome work Destin! All your videos are beyond incredible, but this one was super on point!

i love this vid sooooo much XD

Love the reenactment.

This is the single most incredible thing I have ever learned.

This 11:21 minutes flew by as if the video was just 1 minute long

I love this! Reminds of how, in saber fencing, a professional technique is hitting the opponents blade in such a way it “whips” around. Hurts like a mother. And also makes the tip of a saber the second fastest object in the olympics, only beat by bullets.

... been following You since the Total Solar Eclipse in August of 2017 and just stumbled over this Video. I AM AMAZED !! !! !! (and Miss Choi has another follower too)

4:56 - “Destin - Learning Stuff” lmao

I got to experience this phenomenon firsthand when I picked my wife up for our first date. She was still drying her hair with a towel and she thought it would be cute to throw the towel at me. So I thought it would be cute to pretend that I was going to “whip” it at her. With a lazy motion I whipped the towel towards her but unfortunately that towel conserved energy perfectly. The crack was so loud that I am pretty sure it broke the sound barrier and left A bruise on her bottom even through her jeans. And with all that we were still married a few years later and have been for over 18 years. 😄

This is why I love this channel. I thought I knew how this worked and therefore there was nothing I could learn from it, and was absolutely incorrect

it went so far .... hats offf

This guy would be the best physics teacher.

Your child like enthusiasm for the simple things in life is contagious. Lol. I love your videos.

Awesome! :-D

9:02 I love how he put eye protection on for this explanation

There were a lot of things we couldn't do in an SR-71, but we were the fastest guys on the block and loved reminding our fellow aviators of this fact. People often asked us if, because of this fact, it was fun to fly the jet. Fun would not be the first word I would use to describe flying this plane. Intense, maybe. Even cerebral. But there was one day in our Sled experience when we would have to say that it was pure fun to be the fastest guys out there, at least for a moment. It occurred when Walt and I were flying our final training sortie. We needed 100 hours in the jet to complete our training and attain Mission Ready status. Somewhere over Colorado we had passed the century mark. We had made the turn in Arizona and the jet was performing flawlessly. My gauges were wired in the front seat and we were starting to feel pretty good about ourselves, not only because we would soon be flying real missions but because we had gained a great deal of confidence in the plane in the past ten months. Ripping across the barren deserts 80,000 feet below us, I could already see the coast of California from the Arizona border. I was, finally, after many humbling months of simulators and study, ahead of the jet. I was beginning to feel a bit sorry for Walter in the back seat. There he was, with no really good view of the incredible sights before us, tasked with monitoring four different radios. This was good practice for him for when we began flying real missions, when a priority transmission from headquarters could be vital. It had been difficult, too, for me to relinquish control of the radios, as during my entire flying career I had controlled my own transmissions. But it was part of the division of duties in this plane and I had adjusted to it. I still insisted on talking on the radio while we were on the ground, however. Walt was so good at many things, but he couldn't match my expertise at sounding smooth on the radios, a skill that had been honed sharply with years in fighter squadrons where the slightest radio miscue was grounds for beheading. He understood that and allowed me that luxury. Just to get a sense of what Walt had to contend with, I pulled the radio toggle switches and monitored the frequencies along with him. The predominant radio chatter was from Los Angeles Center, far below us, controlling daily traffic in their sector. While they had us on their scope (albeit briefly), we were in uncontrolled airspace and normally would not talk to them unless we needed to descend into their airspace. We listened as the shaky voice of a lone Cessna pilot asked Center for a readout of his ground speed. Center replied: "November Charlie 175, I'm showing you at ninety knots on the ground." Now the thing to understand about Center controllers, was that whether they were talking to a rookie pilot in a Cessna, or to Air Force One, they always spoke in the exact same, calm, deep, professional, tone that made one feel important. I referred to it as the " Houston Center voice." I have always felt that after years of seeing documentaries on this country's space program and listening to the calm and distinct voice of the Houston controllers, that all other controllers since then wanted to sound like that, and that they basically did. And it didn't matter what sector of the country we would be flying in, it always seemed like the same guy was talking. Over the years that tone of voice had become somewhat of a comforting sound to pilots everywhere. Conversely, over the years, pilots always wanted to ensure that, when transmitting, they sounded like Chuck Yeager, or at least like John Wayne. Better to die than sound bad on the radios. Just moments after the Cessna's inquiry, a Twin Beech piped up on frequency, in a rather superior tone, asking for his ground speed. "I have you at one hundred and twenty-five knots of ground speed." Boy, I thought, the Beechcraft really must think he is dazzling his Cessna brethren. Then out of the blue, a navy F-18 pilot out of NAS Lemoore came up on frequency. You knew right away it was a Navy jock because he sounded very cool on the radios. "Center, Dusty 52 ground speed check". Before Center could reply, I'm thinking to myself, hey, Dusty 52 has a ground speed indicator in that million-dollar cockpit, so why is he asking Center for a readout? Then I got it, ol' Dusty here is making sure that every bug smasher from Mount Whitney to the Mojave knows what true speed is. He's the fastest dude in the valley today, and he just wants everyone to know how much fun he is having in his new Hornet. And the reply, always with that same, calm, voice, with more distinct alliteration than emotion: "Dusty 52, Center, we have you at 620 on the ground." And I thought to myself, is this a ripe situation, or what? As my hand instinctively reached for the mic button, I had to remind myself that Walt was in control of the radios. Still, I thought, it must be done - in mere seconds we'll be out of the sector and the opportunity will be lost. That Hornet must die, and die now. I thought about all of our Sim training and how important it was that we developed well as a crew and knew that to jump in on the radios now would destroy the integrity of all that we had worked toward becoming. I was torn. Somewhere, 13 miles above Arizona, there was a pilot screaming inside his space helmet. Then, I heard it. The click of the mic button from the back seat. That was the very moment that I knew Walter and I had become a crew. Very professionally, and with no emotion, Walter spoke: "Los Angeles Center, Aspen 20, can you give us a ground speed check?" There was no hesitation, and the replay came as if was an everyday request. "Aspen 20, I show you at one thousand eight hundred and forty-two knots, across the ground." I think it was the forty-two knots that I liked the best, so accurate and proud was Center to deliver that information without hesitation, and you just knew he was smiling. But the precise point at which I knew that Walt and I were going to be really good friends for a long time was when he keyed the mic once again to say, in his most fighter-pilot-like voice: "Ah, Center, much thanks, we're showing closer to nineteen hundred on the money." For a moment Walter was a god. And we finally heard a little crack in the armor of the Houston Center voice, when L.A.came back with, "Roger that Aspen, Your equipment is probably more accurate than ours. You boys have a good one." It all had lasted for just moments, but in that short, memorable sprint across the southwest, the Navy had been flamed, all mortal airplanes on freq were forced to bow before the King of Speed, and more importantly, Walter and I had crossed the threshold of being a crew. A fine day's work. We never heard another transmission on that frequency all the way to the coast. For just one day, it truly was fun being the fastest guys out there.