SmarterEveryDay - 2018-11-01
Get your first audiobook free when you try Audible for 30 days visit https://www.audible.com/smarter or text smarter to 500 500! Click here if you're interested in subscribing: http://bit.ly/Subscribe2SED ⇊ Click below for more links! ⇊ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ GET SMARTER SECTION Read about Schlieren Imagery https://en.wikipedia.org/wiki/Schlieren Derek from Veritasium made a great video about Schlieren https://www.youtube.com/watch?v=4tgOyU34D44 Mach Angle https://www.grc.nasa.gov/www/k-12/airplane/machang.html Transonic Regime https://en.wikipedia.org/wiki/Transonic Oblique Shock https://www.grc.nasa.gov/www/k-12/airplane/oblique.html Normal Shock wave equations: https://www.grc.nasa.gov/www/k-12/airplane/normal.html .300 AAC Blackout https://en.wikipedia.org/wiki/.300_AAC_Blackout ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ GET STUFF SECTION: (If I did this right these should be working Amazon affiliate links to purchase the stuff I like to use. When people purchase from these links it will support Smarter Every Day.) ❓Mystery Item (just for fun): https://amzn.to/3aPb1wn Things I use and like: 📷Camera I use : https://amzn.to/2VSiruw Favorite Lens: https://amzn.to/2KPDQ1a Wide-angle: https://amzn.to/2SlPchR On-camera Mic: https://amzn.to/3aVVbjz Lav Mic: https://amzn.to/3aRek6r Hot shoe mount for Lav Receiver: https://amzn.to/35m6uAo My Tripod: https://amzn.to/2Yl6RtJ My Multi-tool: https://amzn.to/2zGm5Pz Favorite SD Card: https://amzn.to/2KQ3Edz 💾How I get footage off my phone: https://amzn.to/2KMem4K Travel Tripod: https://amzn.to/2zEa9Oi My Backpack: https://amzn.to/35jveJL My Headlamp: https://amzn.to/3deYmVt Favorite Bidet: https://amzn.to/2xnMG3b World Map: https://amzn.to/3aTFCZT Favorite Shoes: https://amzn.to/3f5trfV Everyone needs a snatchblock: https://amzn.to/2DMR4s8 🥽Goggle Up! : https://amzn.to/2zG754g Also, if you’re interested in a Smarter Every Day shirt etc. they’re really soft and you can get there here: https://www.smartereveryday.com/store ~~~~~~~~~~~~~~~~~~~~~~~~~~ Huge thanks to Dr. Kanistras https://www.uah.edu/eng/departments/mae/faculty-staff/konstantinos-kanistras Tweet Ideas to me at: http://twitter.com/smartereveryday Smarter Every Day on Facebook https://www.facebook.com/SmarterEveryDay Smarter Every Day on Patreon http://www.patreon.com/smartereveryday Smarter Every Day On Instagram http://www.instagram.com/smartereveryday Smarter Every Day SubReddit http://www.reddit.com/r/smartereveryday Ambiance and musicy things by: Gordon McGladdery did the outro music the video. http://ashellinthepit.bandcamp.com/ The thought is it my efforts making videos will help educate the world as a whole, and one day generate enough revenue to pay for my kids college education. Until then if you appreciate what you've learned in this video and the effort that went in to it, please SHARE THE VIDEO! If you REALLY liked it, feel free to pitch a few dollars Smarter Every Day by becoming a Patron. http://www.patreon.com/smartereveryday Warm Regards, Destin Disclaimer: Information related to UAH contained in this video is subject to change by the appropriate officials of The University of Alabama in Huntsville without prior notice. Material and information in this video do not serve as a contract between The University of Alabama in Huntsville and any other party and do not serve as an endorsement of any paid sponsor of this video.”
"who uploads a slow-mo video at 3 in the morning?"
Destin: "oh boy 3am!"
3am is my time to shine! Lol shout out to all the peeps craving brain food.
Can anybody plz tell what are those circles emmiting from the front of the bullet?
Me here 3:29 am.
He doesn't have time to sleep
it's 5 o'clock somewhere
"I CAN MAKE IT I CAN MAKE IT!!!" - The Little Bullet That Could
Actually thats the bigger one
I THINK I CAN I THINK I CAN
@Jared Wade lmao omg.. I had no Idea what he was saying... I thought he was pretending to speak german or something...xD
What I learned from this video:
Revolvers produce dramatic orchestra music when fired.
Gabriel those sounds aren’t from the camera, read the other reply and you will understand
@Moths I know that it was a joke
may be a good sense of armony be shocked by noise of fire
Sound of death 😮
@Moths yeah yeah I know, I was making a joke.
When the camera pans down when he says "I got this giant 16 inch......"
Lol
You dirty girl.. ;)
But does it have...LAMINAR FLOW?!
@Emil S the gyroscopic stabilization (say 200,000 rotations/sec) will beat out any transonic instabilities in any reasonably constructed (and properly rotating) bullet and ensure that it remains stable. Check out Mark and Sam's ELR shooting channel, he shoots transonic ranges 90% of the time (including rather clunky projectiles like a 45-70 or a 12g slug) and rarely encounters tumbling, it's more of a myth (that those normal forces inevitably cause tumbling in a spinning projectile) because not many people take their shots out to 2+ km. Of course if we're talking about an aircraft than you lose gyroscopic stability and hence the historical difficulty in constructing aircraft capable of supersonic flight.
The air molecules in the boundery of the "cone shockwaves" is pretty laminar. And the aftershocks were pretty turbulent. So yes
I think it would have to have an unreasonably long taper on the back to have 100% laminar flow.
supersonic flow and laminar flow doesn't mix together
ur mum has laminar flow, m8.
Someone is happy that it doesn't take 11 hrs to render a video so now they're pumping them out faster :)
So true, from 11 hrs to less than 3
I bet he has at least 10 Terabytes of slow motion footage lying around just waiting to be rendered and uploaded
3:10 Hats off to the editor for the frame by frame animation
Destin: This is a Phantom V-2511.
The Slow Mo Guys want to know your location
Did you notice that the MacBook that plays slomo video in this video, runs on Windows 10???
Also at 9:04
So what?
thats illegal
bootcamp
@Ku1fje yup. Ikr
Watching the shockwave pattern of a revolver fire.
The hand barely stays in the safe zone.
The first person who invented revolver must be nuts!
It looks worse than it is. Just avoid hugging the cylinder gap and muzzle
If only my professor explains stuff as enthusiastic as Dr. Kanistras.
Right?! That guy knows how to make complex things sound like a piece o cake.
my boy hes greek
If you want more interesting physics professors explaining things enthusiastically, you should check out the channel Sixty Symbols.
His voice is also supersonic
His classes are definately challenging, but that's not a bad thing (although time consuming 😂) He asks questions in lecture and tests that make sure you really understand the concepts. I have him this semester for Aircraft stability and controls and learning a lot.
8:45 Sound starts
Hanz Zimmer: starts drooling
"do you know what the speed of sound is?"
"its like twelve something"
@Evan Emanuel didnt need an explanation... i understood it... it just sounds funny.
@Ken Gamble actually it's barometric pressure, which is a combination of altitude and temperature
@Benjamin Price in the end it´s the air´s density (molecules per volume / average distance a molecule travels between exchanging momentum with other molecules), which depends both on temperature and altitude. And yes, "12 something", as in "times 100 ft/s" is pretty darn accurate for most normal circumstances.
honestly, twelve something is exactly how I remember it, too.I think he wasnt refering to the 11something feet per second, but to 1236 km/h.
@good child, m.A.A.d urban area haha, yo, but then again "twelve something" is kind of the universal rule of thumb, as it should be accurate enough in both systems for most circumstances ;-.) guy´s a real pro
Veritasium: "Let me clap my hands so maybe I can have a good amount of shockwave shadows comin' out"
SmarterEveryDay: "So, here we have a 300 blackout supersonic"
Love you both :)
Psalms 111:2
The works of the Lord are great, sought out of all them that have pleasure therein.
If only our professors explain stuff as enthusiastic as Dr. Kanistras.
@MattsAwesomeStuff Actually his voice is in a poor register for some of us. Add the accent to that and those of us with tinnitus in the right range might have missed some of what he said. Turning him up helped a bit for me, but then Destin's voice was too loud.
My biggest issue with Mumbai Tech support is getting a woman, and not being able to understand a word they said not because the accent is too thick, but because between the accent and the range of the voice I got an approximation of the Teachers in Peanuts cartoons. I got one with a lower voice but more accent than the others I dealt with (this was my phone service tech support) and had no problems. But at the same time, I had trouble understanding my Mom on the phone.
The passion for knowledge is just bursting out of him, it would be a pleasure to learn anything from a person like that!
@Jeric J Nailed it.
@FountaKoka PrezaAlkool I had a Polish calculus professor once. His favorite words were "Calculus is change, Life is change. CALCULUS IS LIFE!" Dude LOVED teaching and was a massive improvement over the undergrad TA I had in a previous attempt.
Did you see his eyes he was like hyper or simething
0:12 which is why I’m pretty excited about this giant 16 inch (looks down) 😆
That caught me off guard too! lol I was like NO NO NO NO, oh, right... 😅
I fully understood this guy when he said: Δεν γουι γκόου μπακ του σαμπσόνικ. Ιτς ε νόρμαλ σοκ.
"It literally leaks shockwaves out of the side"
Dont know why that had me dead💀
Dr. Kanistras has such a greek accent that even if I didn't know his origin i would know he is greek🇬🇷🇬🇷
Thank you for watching my internets.
does this explain the whip?
I wonder if it's possible to photograph the sound from a Tesla coil. An electric arc schlieren!
I wonder if the visible radiating circles might be the bullet itself ringing?
Could probably measure the resonant frequency of that particular bullet from the frame rate and rate of circle radiation?
What will happen if shoot/throw something in verry low speed would you be abel to se it? Love from Sweden 😊
Can anybody plz tell what are those circles emmiting from the front of the bullet?
As a life time shooter (I'm 76 now) and also with an aviation/aerodynamics background this was very interesting......especially the localised supersonic airflow on a subsonic projectile.... Great stuff and wonderful filming...
That's why you lose so much accuracy once a round goes sub-sonic. There's so much turbulent flow in the transonic region, it's difficult to get consistent behavior out of a loading.
Did you know the same thing happens with a helicopter’s roter blade. The blade meeting the wind in the direction of flight meets air at the speed of the chopper plus the speed of the rotation of the blade. The combined speeds go supersonic on the edge of the blade producing the noise of the blades. This is what limits the copters ability
Thomas D Harrell interesting!
4:25 Do you know the speed of sound, yeah its like 12 sumfin
5:15 at first thought it looks like your a scuba diver looking up and seeing a go fast boat above.. LOL
The science behind this is literally giving me goosebumps! I could watch these types of videos forever!!!! Please keep slow mo ballistics coming!
I got shivers when I learned that you can calculate the speed of a super sonic projectile by measuring the angle of the cone of the shockwave. Mind blown.
Same here too, mind blown
Prerty sure that blew my freakin' mind too...and what a perfect included angle that shockwave formed. Looked like it was drawn with a protractor.
that's what's up
So, the method presented in the video is not totally correct. The “Mach angle” relationship he used is for a Mach wave (an infinitely weak shockwave produced by a small disturbance). In reality, the included angle of the oblique shockwave depends on not only the Mach number, but the included angle of the projectile.
^ exactly thank you, since the bullet has a tip which is also a wedge, the angle of the oblique shock is also affected so the only real way to know the speed is by using tables
I like how the guy kept firing before the word "fire" is even finished being said.
"do you know what the speed of sound is?"
Mach 1
8:45 Sounds like some kind of music from Hanz Zimmer.
Totally mind F me with the 16 inch mirror.. Good one lol
The fact that he gets straight to the point without all that filler (that other channels put in to get extra revenue from the 10 minuet mark) is absolutely amazing. Don’t ever think that decisions like that go unnoticed because it really shows in the quality of your content. By far one of my favourite youtubers so don’t slow down, ya almost at the big 6M.
💯
Scrolled back up to see if I had subscribed. If only I could subscribe twice...
Akinlolu Oderinde ikr
"That is the best video I've probably ever participated in." Does that include your laminar flow video? You seemed to really enjoy that one.
"If you're not into this, I don't know what's wrong with you" lol!🤣 love it
The slow-mo video of the revolver also shows the hilarity of putting suppressors on revolvers!
I am having an exam in mechanics of fluids and this is kne of my lectures. This is amazing! Thank you so much!
Would've loved to see more of Dr. Konstantinos Kanistras.
@NPC #335801 Of course he is, you don't even have to know his name, his accent gives it away immediately! :D
@NPC #335801 Yes he is. 😊 I'm Greek and I didn't understand it for a minute until I heard his accent.
I've had him for a bunch of classes I actually had him for the class that teaches these concepts (Compressible Aerodynamics). His classes are pretty tough, but I've learned so much in his classes. You guys are spot on, he is SUPER passionate about what he does. This man brings some enthusiasm in his lectures (which I appreciate).
Can anybody plz tell what are those circles emmiting from the front of the bullet?
I liked his eyebrows! And i never say stuff like that either lol!!
Hey man this is my new favorite channel! I've done a lot of different searches on so many different things and they all lead back to your channel haha. Videos are always cool.
Amazing stuff. Has to be one of the most informative videos I've seen on Youtube. Great job and thank you!
Im not a frequent shooter any longer, but now, every time i shoot, I'll imagine shock waves.
5:16 that laugh has me dying 😂
And normal shock is why airplane wings are angled backwards. It increases the critical mach number, the speed at which those normal shock waves begin. Really cool to see it applied to bullets!
Therefore reducing the drag with less energy needed?
Tie in video? I'd like to hear you talk more about this...
This is as the air goes over the airfoil?
Oh wow that makes a lot of sense
Is it the same reason why helicopters have a speed limit?
I absolutely love this stuff, keep up the science!
5:18
That honestly made me laugh lol
Dude, THANK YOU! I love watching your channel an I really appreciate what you do. Such amazing content.
The revolver was AMAZING! I have a certain affinity for revolvers, and I must have replayed that few seconds of video 15 times.
You make the internet a better place. I'm bookmarking this video so I can share it with my kids when they are old enough to understand
Just show em or they're going to be on the video games when they're old enough to understand
Him and Colin Furze. Now I'm off to see Mr. Bean's R.C. chair.
I've taught 12 year olds special theory of relativity and they then told me if the clocks on satellites are set faster or slower. Kids have amazing brains, "goldfish will grow as large as the tank", keep kids in a large mental space and they will fill it.
I have bookmarked this channel for future kids.
And I send this kind of stuff to my mom and brother.
"Imagine if he had a silencer"
- Hillary Clinton
I'm so glad there's a SmarterEveryDay video on this subject that's kept me up for the last few hours... trying to imagine a shockwave at the speed of sound
OK BRAIN, YOU UNDERSTAND IT NOW.. CAN WE GO TO SLEEP?!
Please
Whoa, this is the best bit o' science I saw today. Thank you for your work! Excellent!
It's Okay To Be Smart - 2018-11-01
I dreamt of this day, and here it is. Thank you for doing the video I hoped you would one day do, Destin. So cool 😎
Wes Darling - 2020-01-22
@711 soundwaves
Ian - 2020-02-13
Dude the SloMo guys just did one with a tank round. You should check it out!
Gustavo Moura - 2020-03-08
❤️
Global Eyes - 2020-03-22
wow that was sick check out my slomo vid
Superabbas Almani - 2020-04-16
@Sewan & Sawen Creations BOOK I
Psalms 1–41
Psalm 1
1 Blessed is the one
who does not walk in step with the wicked
or stand in the way that sinners take
or sit in the company of mockers,
2 but whose delight is in the law of the Lord,
and who meditates on his law day and night.
3 That person is like a tree planted by streams of water,
which yields its fruit in season
and whose leaf does not wither—
whatever they do prospers.
4 Not so the wicked!
They are like chaff
that the wind blows away.
5 Therefore the wicked will not stand in the judgment,
nor sinners in the assembly of the righteous.
6 For the Lord watches over the way of the righteous,
but the way of the wicked leads to destruction.
........................................................
I wish you & all other Bros long life full of Love & Health!