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This Is Not a Shockwave
Рет қаралды 601,566
Күн бұрынSign up to Nebula here: go.nebula.tv/r...
Links to everything I do:
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Credits:
Writer/Narrator: Brian McManus
Editor: Dylan Hennessy
Animator: Mike Ridolfi
Sound: Graham Haerther
Thumbnail: Simon Buckmaster
[References]
[1] aerorocket.com/...
[2] www.weather.go...
[3] www.zehnderame...
[4] www.grc.nasa.g...
[5] / 1300787794793713664
[6] large.stanford....
Select imagery/video supplied by Getty Images
Thank you to AP Archive for access to their archival footage.
Music by Epidemic Sound: epidemicsound.c...
Songs:
Thank you to my patreon supporters: Adam Flohr, Henning Basma, Hank Green, William Leu, Tristan Edwards, Ian Dundore, John & Becki Johnston. Nevin Spoljaric, Jason Clark, Thomas Barth, Johnny MacDonald, Stephen Foland, Alfred Holzheu, Abdulrahman Abdulaziz Binghaith, Brent Higgins, Dexter Appleberry, Alex Pavek, Marko Hirsch, Mikkel Johansen, Hibiyi Mori. Viktor Józsa, Ron Hochsprung
@mathieuprovencal6392 3 жыл бұрын
for the blue light, LOOK FOR Cherenkov radiation. It's when charged particles move faster than light through a medium ( in nuclear reactors it's water). Though, when we say "nothing is faster than the speed of light", it is true, in a vacuum like space. Light can be slowed down when travelling through different mediums like water, making this possible. In water, light travels at 75% of it's vacuum speed.
@40watt53 3 жыл бұрын
Let's get this to top comment so we don't need to get Nebula.
@hirvielain9013 3 жыл бұрын
I was kinda annoyed that he didn't mention the Cherenkov radiation by name for those who are interested to look it up. Forcing to watch an another video of his for an explanation isn't the way to go.
@BloodAsp 3 жыл бұрын
Thank you for pushing for free and avaliable information for all!
@seamon9732 3 жыл бұрын
MVP comment
@thethreeheadedmonkey 3 жыл бұрын
Don't educate people with FACTS. Who knows where that will lead!
@nilomosquerapazos1207 3 жыл бұрын
When aerodynamics are more interesting than a movie:
@BenBike 3 жыл бұрын
Aerodynamics* 😘
@justanerd414 3 жыл бұрын
As someone who hasn't watched any movies in years : isn't that the case always?
@nilomosquerapazos1207 3 жыл бұрын
@@BenBike oops hahah
@2KOOLURATOOLGaming 3 жыл бұрын
It's nice to watch those films that use realism for drama instead of trying to gain drama through unrealism.
@ThinhNguyen-dk3mh 3 жыл бұрын
To be more specific *gas dynamics
@MrSeerocket 3 жыл бұрын
Great video. As a former aviator who flew the Hornet, I appreciate the clarification of the principles at work. One correction... 2:40 “If we were at 100% *absolute* humidity..”. Absolute humidity is the amount of water vapor per volume, and is independent of the temperature/capacity for the air to hold more vapor (i.e. 5G/m^2) Any time we refer to a percentage humidity, that is, by definition, *relative* humidity.
@jakobrosenqvist4691 3 жыл бұрын
I was just about to say the same things.
@WeBeGood06 2 жыл бұрын
Ah, you flew a Hornet, cool. Another Clarification, the jet has entered the "Sound Barrier" as indicated by the Supersonic Flow of the Vapor Cone, where water condenses across Supersonic Expansion Waves and evaporates across the Wake Shockwave. The second Boom of the classic boom-Boom forms first as the "Sound Barrier" is entered. The back half of the aircraft is flying in the Supersonic Bubble of the Sound Barrier. So, there actually is a Boom that is finite, circular, and grows to infinity at Mach 1, where the first boom forms. boom-Boom.
@matthewharbour6276 2 жыл бұрын
Hey when you break the speed of sound can you feel anything at all?
@55dbk 2 жыл бұрын
@@WeBeGood06The vapor cone can form and be visible even if the jet is flying at subsonic speeds. All that is needed is for the expansion zone to have a sufficiently low pressure that water in the air becomes super-saturated and therefore condenses as visible micro-droplets. Higher humidity ambient air requires lower jet speed to produce this effect.
@gregmead2967 Жыл бұрын
I see I'm commenting on almost exactly the same thing, a year later. It's odd that the narrator made that weird error.
@Blabla130 3 жыл бұрын
"Many of you will be looking at the screen with a raise eyebrow right now" I feel personally attacked
@WulfgarOpenthroat 3 жыл бұрын
Light travels slower than "the speed of light" when it's moving through a material, like air or water, so it's possible for other things(like electrons) to move faster than it. en.wikipedia.org/wiki/Cherenkov_radiation What we commonly call the speed of light - the universal speed limit - is actually the speed of causality. Light just happens to travel that fast when it's in a vacuum and there's nothing to slow it down. We call c the speed of light in large part because of the order in which things were discovered and named, iirc.
@enhydralutra 3 жыл бұрын
Same. And I continued to have a raised brow until "...in water." Oh, yes, okay, that makes perfect sense now.
@merseyviking 3 жыл бұрын
I felt less attacked, and more confused as to how he managed to see my face.
@matttzzz2 3 жыл бұрын
This video is the epitome of the "well ackchyually" meme
@cr10001 3 жыл бұрын
@@WulfgarOpenthroat Thank you for that, saved me from having to make the same explanation. Which would have been almost word for word like yours :)
@nmccw3245 3 жыл бұрын
The Cherenkov radiation tease is brutal…
@nogussy 3 жыл бұрын
Yeah, doesn't even tell you its name, as if nebula is the only way to understand it
@konstantin.v 3 жыл бұрын
Каких ещё черенков? 🤭
@timlash 3 жыл бұрын
@@IdunRedstone Fair I guess, but I drop YT subscriptions when the YT content becomes little more than an ad for their Nebula content. Don't want Nebula, never going to buy Nebula. I don't mind a prompt at the end, but a nasty tease at the end just seems mean. That's not why I follow educational YTers. If they can't make it work on YT, that's fine. Stop. I'm not owed a YT video. But don't rub my nose in the fact that I'm missing out on even better content.
@Kyle-gw6qp 3 жыл бұрын
@@IdunRedstone To be fair, KZfaq has faaaaaar more content than Nebula.
@IdunRedstone 3 жыл бұрын
@@Kyle-gw6qp And also faaaaaar more viewers. Point is way more of those viewers would pay for YT premium if it was cheap and not more expensive than even disney.
@aroncoxall3058 3 жыл бұрын
"Faster than Light" Me: Lies, deception
@fnorgen 3 жыл бұрын
Well, slower than the speed of light in a vacuum, but faster than the speed of light in water.
@theimperfectgod7140 3 жыл бұрын
*IMPOSSIBRU!!!*
@aroncoxall3058 3 жыл бұрын
@@fnorgenThat's what I was thinking he meant. Very cool.
@WulfgarOpenthroat 3 жыл бұрын
en.wikipedia.org/wiki/Cherenkov_radiation Faster than the speed of light through a material, which is slower than c, the speed of causality and universal speed limit.
@ThePowerLover 3 жыл бұрын
@@WulfgarOpenthroat Relativistic causality*
@adhithasimhanraghavan7516 3 жыл бұрын
This is a vintage type of real engineering video 😍 pure technical stuff explained to the point!
@DyslexicMitochondria 3 жыл бұрын
And I love it so much
@sterlingarcher8041 3 жыл бұрын
@@DyslexicMitochondria your username made me click on your profile. Your channel is a hidden gem bro
@cobeer1768 3 жыл бұрын
Really? Where? All I saw was a teaser and ad for nebula
@WeBeGood06 3 жыл бұрын
But wrong.
@konstantin.v 3 жыл бұрын
@@cobeer1768 , exactly! 🤭
@RealEngineering 3 жыл бұрын
This video was inspired by a Twitter thread by Dr. Chris Combs, a professor of hypersonics in UTSA. He also helped me research for the X-15 video. Also, the saturation explanation is not strictly accurate, but it’s easier than explaining that the balance of evaporation and condensation changes. Don’t @ me meteorologists
@xx_insert_cool_username_he6876 3 жыл бұрын
Twitter has did something good
@RealEngineering 3 жыл бұрын
Twitter is class. Just follow cool people like hypersonics researchers.
@nilomosquerapazos1207 3 жыл бұрын
Amazing work! Would it be possible that you made a video about the new and insane next gen drones the USAF is developing (mq-25, XQ-58 Valkyrie…) ??
@kirkc9643 3 жыл бұрын
@@RealEngineering Twitter is a festering cesspit. A blight on humanity.
@cerealspiller 3 жыл бұрын
@@kirkc9643 Something of an over-generalization, IMO. Kind of like saying humanity is a blight on humanity. Wait... nevermind.
@thespongeisright774 2 жыл бұрын
Does anyone know the difference between an introverted engineer and an extroverted one? An introverted engineer looks at his shoes when he talks to you. But, an extroverted engineer looks at your shoes when he talks to you.
@mimikyoo 3 жыл бұрын
Real engineering videos be like "if this is not a hot dog: what is it? To answer that question, we need to talk about the industrial revolution..."
@konstantin.v 3 жыл бұрын
... and subscribe for Nebula 🤭
@polakrodak8538 3 жыл бұрын
And sub to nebula
@tacct1kk715 2 жыл бұрын
And buy nebula ffs it's so annoying I'm not paying for that shit sorry
@jr5960 3 жыл бұрын
Love the video. Just a quick note: clouds and the like aren’t made of visible water vapour; as gaseous water is invisible. These are examples of condensed water in liquid form, as tiny micro droplets, small enough for gravity forces to be small relative to other aerodynamic forces, keeping these micro droplets aloft as fog/clouds. Cheers!
@rcpmac 3 жыл бұрын
Wow, very interesting point and the only comment worth reading
@michaelhart7569 2 жыл бұрын
Yes, I spotted that too. Wasn't sure if it was a slip of the tongue or not. I'm also pretty impressed that he had the courage to quit his day job before even uploading a video. And it's getter braver as KZfaq seems to delete more and more channels it doesn't like for no clear reason, even when they don't breach the terms of service which are deliberately vague.
@Detton80r Жыл бұрын
@@michaelhart7569 Can't let the simple Truth slip out, can they. lol
@Detton80r Жыл бұрын
So what we see is the sudden density change? Intriguing...
@JeremieBPCreation 3 жыл бұрын
The ending of this video sounds a lot like "Have you heard that modern science is completely wrong? Come give us money to get the ACTUAL TRUTH!!!""
@truthwatcher2096 3 жыл бұрын
It's a bit of a teaser to promote Nebula but he's not lying
@JeremieBPCreation 3 жыл бұрын
@@truthwatcher2096 I know, I generally have a lot of respect for their work but teasing with such a misleading statement, that is only true with an added context, and hiding the answer behind a paywall, was too similar to the behavior of clickbait and scammers for me to be silent. ¯\_(ツ)_/¯
@tacct1kk715 2 жыл бұрын
@@JeremieBPCreation yeah exactly kinda scummy ngl it's very misleading but thanks to the great guys in the comments I learnt what he really meant
@sclarin2 3 жыл бұрын
"If we were at 100% max humidity" so Florida then
@LadyAnuB 3 жыл бұрын
Or the coast of Central and Northern California during summer.
@Twas-RightHere 3 жыл бұрын
5:34 "All ads are cut from the nebula version" Me: *sips tea with adbocker on*
@ThirstyFish3918 3 жыл бұрын
*while watching an ad for nebula
@patrykc9050 3 жыл бұрын
I love this channel! If I wasn’t a broke medical student in hundreds of thousands dollars in debt, I’d sign up for nebula in a heart beat! Hopefully in the near future!
@elena6516 3 жыл бұрын
nobody cares
@jonathanmeza6527 3 жыл бұрын
@@elena6516 Nobody cares about your comments
@patrykc9050 3 жыл бұрын
@@elena6516 I hope you have a wonderful day!
@ilyamiskov 3 жыл бұрын
@AkkiSciChannel The truth is, nobody truly cares about anyone but themselves.
@friedrichvonsnatch3501 3 жыл бұрын
Do you ever have to pay off student loansthe US? In the UK it's very rare anyone pays off any decent amount
@abdulmuhaimintahseen7710 3 жыл бұрын
This is the difference between googling something with no knowledge and actually being a smart student. Great video!
@WeBeGood06 3 жыл бұрын
Not sure I would say that, he just doesn't know where to look to see the Shockwave in all those images. Because you can see the Wake Shockwave in most of those images. It's where the cloud evaporates as pressure and temperature increase across the supersonic flow returns to subsonic flows. The base of the cone is a visible shockwave.
@konstantin.v 3 жыл бұрын
@@WeBeGood06 , cannot the cone appear without the aircraft going supersonic? 🤔
@WeBeGood06 3 жыл бұрын
@@konstantin.v The cone appears before Mach 1, it is supersonic flow. The tail of the aircraft flies supersonic before the bow of the aircraft. The cone are the Expansion Fans or Expansion Waves of the Sound Barrier. The top of the cone is the Wake Shockwave. The Nose of the Aircraft is the last part of the aircraft to fly supersonically.
@konstantin.v 3 жыл бұрын
@@WeBeGood06 , thanks! It makes sense. I was just wondering if those cloudlike protuberances can appear without anything going supersonic at all. After all, the plane does alter the pressure around it as it flies even when everything is subsonic 🙂
@JV-lq3tx 3 жыл бұрын
Impeccable timing. I was at an air show today and got to see several of these cones.
@dbeasleyphx 3 жыл бұрын
So happy for this video. I’ve known all along it’s not a sonic boom, but it is such a “common knowledge”.
@AxxLAfriku 3 жыл бұрын
One thing! Just one thing! Please tell IT to me: WHY tf do I have so many fans even though no KZfaqr is unprettier than I am? WORLDWIDE!!!! WHY??? Tell me, dear dav
@RetinaBurner 3 жыл бұрын
Outstanding explanation. I've known this for years, but it's refreshing to see it explained so thoroughly and simply. Nicely done, as always. :)
@TheCardq 3 жыл бұрын
This has been the most compelling ad for nebula I've seen
@Lyerbait13 3 жыл бұрын
For real. I might actually get it now
@dido1803 3 жыл бұрын
I totally agreed. I'm going to subscribe.
@nikospapageorgiou57 3 жыл бұрын
Cherenkov radiation isn't something new. But just saying that these particles move faster than the speed of light within a medium, does not help in making people understand, that the speed of light within a medium like water, is significantly lower than that within a vacuum (300.000Km/sec)
@AluminumOxide 3 жыл бұрын
4:05 the shuttle mission in question is STS-70, and at 5:09 light takes a longer path than the electrons, enabling them to take a shortcut and “appear” traveling faster than light.
@TheWorstBridger Жыл бұрын
They are travelling FTL through the medium. In this case water
@banksofbarcelona3893 3 жыл бұрын
Not a sonic boom? I guess we'd never know the secrets of Guile of Street Fighter!
@sircrapalot9954 3 жыл бұрын
Guile’s hair was completely out of Air Force regs too.
@banksofbarcelona3893 3 жыл бұрын
@@sircrapalot9954 exactly.haha
@YounesLayachi 3 жыл бұрын
A sonic boom will be followed by a condensation cone, but the opposite isn't always true. You can also check footage of big explosions, where massive shockwaves are created and followed closely by a wall of condensating water droplets
@joshsvoss 3 жыл бұрын
Isn't the vapor caused by a drop in pressure, rather than a drop in temperature???
@theOrionsarms 3 жыл бұрын
Not, the condensation don't happen if you decrease pressure whiteout a decrease in temperature, but a sudden decrease in pressure reduce the temperature too.
@joshsvoss 3 жыл бұрын
@@theOrionsarms ahhh. So the reduced pressure causes reduced temperature, which causes the condensation, is that right?
@theOrionsarms 3 жыл бұрын
@@joshsvoss this is the correct explanation.
@patwawryk7717 3 жыл бұрын
I honestly love hour long videos and when they are good, they're a gem when I find a good one on KZfaq!
@marvihaemmer99 3 жыл бұрын
Sadly, that is not really the point. Of course it's great that you love videos like that. I do too. But from a creator perspective it is just so much more effort to create a video, just for KZfaq to not really suggest it to viewers. In the end it's literally more effort for less of a reward (less views), so it really does not make sense for creators.
@patwawryk7717 3 жыл бұрын
@@marvihaemmer99 yeah I fully understand stand
@NosiAttack 3 жыл бұрын
As a Guile player I do appreciate you finally clarifying that those are not sonic booms.
@Etherkai 3 жыл бұрын
*Guile theme intensifies*
@jeffbenton6183 3 жыл бұрын
Is Guile a video game?
@remliqa 3 жыл бұрын
@@jeffbenton6183 No, it's a movie .
@deus_ex_machina_ 3 жыл бұрын
@@jeffbenton6183 Guile is a character from the arcade, and later console/PC videogame franchise 'Street Fighter'.
@juice6521 3 жыл бұрын
SONICCU BOOM
@Nova_501 3 жыл бұрын
4:58 made me laugh more than it should’ve. I had both eyebrows raised when you said that 😂
@cerealspiller 3 жыл бұрын
For some reason, the first image that came to me when I saw this was a lab, sitting at my side, patiently watching the video with me. And periodically raising an eye brow.
@gpaull2 3 жыл бұрын
Nebula needs comments. Half the fun of KZfaq is the comment section. I won’t be renewing.
@Red_Twizzler 3 жыл бұрын
“15 minute is too long for KZfaq algorithms” says no one with a successful KZfaq channel.
@6alecapristrudel 3 жыл бұрын
I agree that "the algorithm" is a shitty excuse, but ya gotta wonder how much money are they making from nebula then? It has to be worth their time to make longer videos exclusively for that platform.
@ShinodaChan 3 жыл бұрын
Ironically it just turns me away from Nebula / CuriosityStream more and more when content creators cut their videos short so that they can have an extended cut on another platform I hardly had any interest in to begin with. Doesn't help that said content creators constantly shill the same few services (Skillshare, Nebula etc.) to the point where even hearing their name can be annoying.
@Zveebo 3 жыл бұрын
Yeah, it just annoys me when creators cut big parts of their videos to make Nebula versions better - especially when they then spend the time talking about Nebula 🙄
@rcpmac 3 жыл бұрын
What he said was 1hour is too long for the KZfaq algorithm so it will be broken up into segments
@CephaloG0D 3 жыл бұрын
Literally split it into 15 minute segments and upload them once a week until the series is finished. "But it's 52 minutes, not 60". Perfect! You have 8 minutes to place ads.
@dylreesYT 3 жыл бұрын
"Many of you will be looking at the screen with a raised eyebrow" more like a confused squinting face but yes 😂😂
@ac30428 3 жыл бұрын
That first transition from the plane flying to the google pic was f*cking cool
@WeBeGood06 3 жыл бұрын
0:09 THIS IS A SHOCKWAVE, it is the Sound Barrier. The first Shockwave Sneaks up from Behind in the Wake of the Aircraft as it pushes into the Sound Barrier. Clouds form in the Expansion Waves in Supersonic Airflow associated with the Sound Barrier. The Clouds remain until it enters the Wake Shockwave at or behind the tail of the Aircraft, where there is an abrupt increase in pressure and temperature causing the Cloud to Evaporate. The Cloud is Evaporating in the Wake Shockwave, which forms before the Bow Shockwave at Mach 1. It will becomes the second Boom of the classic Sonic Boom-Boom of an Aircraft flying at Supersonic Speeds.
@MrAlexs888 3 жыл бұрын
5:00 what about the shockwaves from a far away explosion? You can see that clearly in videos
@robspiess 3 жыл бұрын
Yes, this is what I was also thinking.
@rcpmac 3 жыл бұрын
What you see is the effect of the shockwave on objects and particles in the air
@JCisHere778 3 жыл бұрын
You should lookup the taylor neumann sedov blast. Especially the pressure distribution. Although the pressure spikes momentarily after the shock, it decreases below the ambient pressure. Resulting in the condensation of vapour
@MrAlexs888 3 жыл бұрын
@@JCisHere778 i mean those explosions from myhtbusters or i donno, you can see a clear line in the blue sky travelling away, is that also condensation?
@whuzzzup 3 жыл бұрын
@@MrAlexs888 Maybe it's an effect like a mirage?
@Jallandhara 3 жыл бұрын
It’s called Cherenkov radiation. There, I just saved your personal information from being sold.
@clf400 3 жыл бұрын
I saw a great thread on Twitter about this. Now a video by you? Amazing
@RealEngineering 3 жыл бұрын
The video was made because of that thread. Dr. Chris Combs has acted as a consultant for quite a few videos in the channel. He’s great
@5MadMovieMakers 2 ай бұрын
Before this video: "Sonic booms look so cool!" After this video: "Vapor cones look so cool!"
@monteiro5306 3 жыл бұрын
It can be seen on the wing tips of F-1 cars when racing on tracks such as Spa-Francorchamps. Amazing video Brian. As always an awesome job. Greetings from a Brazilian subscriber.
@haaake 3 жыл бұрын
Not really at all comparable to a jet traveling in a straight line forming these particular type of cones that absolutely ARE formed from air moving at transonic speeds. It happens when you have large pressure differentials from air traveling at very high speeds, like on the backside/end plates of an F1 wing, or behind a transonic shockwave forming around leading edges of a fighter jet. It can happen subsonic but doesn’t mean it doesn’t also happen with transonic air. Saying this cone isn’t ever visualizing a transonic shockwave is a dumb semantics argument. Which engineers love to make all the time.
@fuchsfalke5063 3 жыл бұрын
I'd say the many recommendations Tom Scott got for his copyright video (35min) counters the argument of an 20min video being to long.
@rcpmac 3 жыл бұрын
The man said 60 minutes is too long, not 20.
@stevefox3763 3 жыл бұрын
You can also see the vapour clouds/trails coming off the rear wing of an F1 car :)
@terencetam2122 3 жыл бұрын
5:10 Electrons traveling faster than light... in water
@aryehoser8902 3 жыл бұрын
PLEASE DO AN EPISODE ON THE DIFFERENTIAL/ANALYTICAL ENGINE - THE MECHANICAL CALCULATOR
@ellisjackson3355 3 жыл бұрын
That sounds like it would be interesting. Just like the mechanical ECMs that BMW planes had during ww2
@GraphicJ 3 жыл бұрын
Fyi: sound speed of 340 meters per second is 760 mph.
@memorycl 2 жыл бұрын
Condensation cones are not an indicator that these jets are supersonic. They also show up at high transonic speeds. See plenty of Blue Angel pics online; they get cones but never crack Mach 1. Shockwaves are present on the aircraft surface but the aircraft is not moving faster than the speed of sound.
@WeBeGood06 2 жыл бұрын
Actually the "cone" shape is supersonic flow, it gets it's shape from expansion waves followed by a shockwave. It really is a Supersonic Cloud and the tail of the Blue Angel's jet will attain supersonic flight before the nose of the aircraft.
@baksatibi 3 жыл бұрын
2:06 Are you sure about this? Explosions sometimes have a visible shock wave due to light refracting at the edge of the wave. I always thought that a shock wave from an explosion and from a supersonic object is basically the same phenomenon.
@heh2393 3 жыл бұрын
Ayy I love yer vids! When i go to college you will be my first Patreon (fingers crossed)!
@abdulmuhaimintahseen7710 3 жыл бұрын
Same for me, I hope. I would say students are the most interested in these topics. And it definitely helps us in our STEM subjects. However, we are all mostly broke and unemployed if you think about it.
@heh2393 3 жыл бұрын
@@abdulmuhaimintahseen7710 Hey, fingers crossed! We'll make it through buddy!
@sabarishr381 3 жыл бұрын
THANK YOU for teaching me a new thing today !!
@saturnv2419 3 жыл бұрын
"Cherenkov effect, could happen with minimum radiation."
@ArdhenduChakraborty621 3 жыл бұрын
FINALLY someone has said this. Shockwaves can only be seen through methods such as Schlieren Imaging (or Numerical Schlieren Imaging as in my lab), but the thing that we see across these planes, IS NOT shockwave.
@georgezhou2314 3 жыл бұрын
i never knew this, Thank you for explaining!
@jlee4039 3 жыл бұрын
Thank you! I would ask how sound waves could have a visual manifestation like that and was always told I was wrong.
@kweezynonya955 2 жыл бұрын
5:02 "Eyebrows Definitely Raised" 🤣👏👍🙏🏆
@Sarge714 3 жыл бұрын
Ummmmm. You and I learned different on this. A shock wave in what creates the condensation cone. Remember you can have supersonic flow over parts of the aircraft at subsonic speeds. This is your next video. There are videos online from passengers that show the shockware along the wing of airliners in while in cruise. Great video for something to look for for people who fly. I've seen it, its amazing. In fact a video of top 10 things to look for next time you fly would be awesome. Supersonic flow to all the different types of contrails (air condensing) that can be seen in different stages of flight.
@firebry23 3 жыл бұрын
Is it a tempature charge? Or is it because of the pressure difference? Kind like how propeller cavitates in water
@EigenvectorSeven 3 жыл бұрын
It's both. In a gas, temperature, pressure and density are all linked. If you decrease the temp, the pressure must decrease with it, and vice versa. And relative humidity depends on both temp and pressure.
@avineshblah5739 3 жыл бұрын
When pressure decreases temperature also goes down
@holz_name 3 жыл бұрын
"Electrons travel faster than light" - my reaction: and...? - he didn't say electrons travel faster that the speed of light in a vacuum.
@Karibo_0 3 жыл бұрын
pretty cool video :) but if I may, this is not vapor. You can never see vapor as it is a transparent gas (aka humidity), although what we see above boiling water and in any other cloud-like types of waters is condensed liquid water due to -as you said- having more than 100% humidity in the local pressure/temperature environnement.
@fernbedek6302 3 жыл бұрын
So, it's not a sonic boom shockwave, its... the result of the sonic boom shockwave? That feels only a step removed from saying you're not seeing an object, you're just seeing the photons that reflected off the object.
@MortyMortyMorty 3 жыл бұрын
This 5 minute video taught me more than I learned in the last week.
@jackbequick 3 жыл бұрын
Then you're learning wrong
@MortyMortyMorty 3 жыл бұрын
@@jackbequick Pov: You look in the mirror: 🤡
@MoritzvonSchweinitz 3 жыл бұрын
Since the speed of sound depends on pressure, and the sonic shockwave has very high pressure - does this affect each other somehow?
@dsdy1205 3 жыл бұрын
the speed of sound depends purely on temperature, which is proportional to the ratio between pressure and density. Shockwaves always result in an increase in entropy, which can sometimes manifest as an increase in temperature, which can affect the local speed of sound.
@fabiovezzari2895 3 жыл бұрын
5:00 "A shockwave that occurs when something travels faster then the speed of light" 5:02 me: proceeding to raise my eyebrows 5:05 "many of you will be looking at the screen with a raised eyebrow" ....Damn he knows his chickens
@StonedRedneckMarine 3 жыл бұрын
I'm a bit surprised at there being no mention of the temperature changes being due to the rapid changes from high pressure to low pressure causing the expanding of the gasses in the air
@Zveebo 3 жыл бұрын
LMAO at 60 minutes allegedly being too long for the KZfaq algorithm when Noah-Caldwell Gervais easily picked up 400k views for his latest 7 and a half *hours* long video 😂 If you make great content and people like watching it, that’s all the algorithm cares about.
@Miftahul_786 3 жыл бұрын
Why does the temperature decrease with a pressure increase?
@polarisbear7468 3 жыл бұрын
Other way around, temperature decreases with pressure.
@Miftahul_786 3 жыл бұрын
@@polarisbear7468 so does the pressure behind, let's say the aircraft, decrease because at the front of the plane there is a pressure increase so behind it there is a decrease. So with a pressure decrease behind the plane there is also a temperature decrease.
@Miftahul_786 3 жыл бұрын
@@polarisbear7468 I've just rewatched the video and have realised that the video is that it is not a shockwave since a shockwave is an increase in pressure. And for some reason I got confused and thought there was an increase in pressure behind the plane. However, it is an expansion fan that is created which leads to the pressure along with the temperature.
@drvanon 3 жыл бұрын
It does not, the area behind the pressure increase decreases in pressure, correspondingly decreasing temperature.
@TheNapalmFTW 3 жыл бұрын
Man this video was too short. Thanks Brian
@ahobimo732 3 жыл бұрын
Man, the stock footage in this video was just stunning. He could have been reading the ingredients in a can of soup and I would have kept watching.
@banksofbarcelona3893 3 жыл бұрын
Teachers like you teach and do the world good, lesson taught is mostly understood!
@amirattamimi8765 3 жыл бұрын
2:25 relative humidity not absolutely humidity Sorry annoying but wrong is wrong 😉
@BRUXXUS 3 жыл бұрын
Got to love when the first video in nearly two months is 1/3 advertising. 😕
@sandybarnes887 3 жыл бұрын
My favorite example of this is a F1 or other race car on a humid day and a vortex appears coming off the ends of the rear wing.
@hamdog5441 3 жыл бұрын
what about seeing a shockwave from an explosion though?
@EigenvectorSeven 3 жыл бұрын
You can still only see it because of light distortion.
@caio5987 3 жыл бұрын
This is just a glorified ad for nebula
@rogerking7258 3 жыл бұрын
Great explanation. Can you now do one correcting the often heard statement that the reason very fast moving objects (vehicles during re-entry as an example) get very hot because of friction as the air passes over them. In fact it's mainly due to compression of the air that can't get out of the way at such speeds that gives rise to the heat.
@user-ih9ig9ih8y 2 жыл бұрын
But compression and expansion themselves cannot cause temperature difference, only viscous friction. Which is, of course, present between the air layers, mainly in the boundary layer, not just on the aircraft surface
@HweolRidda 2 жыл бұрын
@@user-ih9ig9ih8y Daniel, no. Pressure changes associated with compression are directly related to temperature increases. Diesel engines work on exactly this principle. Read about adiabatic processes....if we compress/expand air it will heat/cool.
@HweolRidda 2 жыл бұрын
This was not a great explanation. He gets the basic idea sort of right, but there is a lot of nonsense in the details. Explaining compressional heating is way beyond him.
@Gunbudder 3 жыл бұрын
i have a friend that got to do research on Antarctica with neutrino detection. The detector relied on cherenkov radiation to indicate that a neutrino had interacted with the device. from what i remember, the neutrino would blast through the tank of fluid and cause electrons to break off and move faster than the speed of light through that fluid. pretty sweet research lol. maybe one day we will have smaller detectors that don't require you to hang out on the bottom of the planet to use them
@samuelasieduawuah296 3 ай бұрын
No one has provided me with a better explanation of shockwaves. Amazing!!!
@theedge5584 2 жыл бұрын
That's how they Disguise the crafts......PERFECT camo when in the sky
@RustyRacer 2 жыл бұрын
Good move, now I'm genuinely considering nebula
@ohaviafeldman8535 3 жыл бұрын
"Many of you are going to be looking at the screen with a raised eyebrow right now" I'm was trying so hard but I can only do them both at the same time.
@codybecker 3 жыл бұрын
Just signed up for CuriosityStream and Nebula with you code! Excited to start learning 😁
@ronmaximilian6953 3 жыл бұрын
I don't know any practical applications for Cherenkov radiation other than to warn people about a radioactive event. However, in a medium such as water or glass the speed of light is reduced. Electrons therefore can move faster than the speed of light in this medium especially highly charged ones. It's produces the really beautiful Cherenkov effect
@theambergryphon4266 2 жыл бұрын
5:01 No kidding, I actually raised my eyebrow haha
@UllalPrajwal 3 жыл бұрын
Interesting to finally learn about these cones, had witnessed them several times in the outskirts of town, who's air space was used as training area by Air force
@regolith1350 3 жыл бұрын
Just to double check that us non-engineers are understanding this correctly... When air travels over a convex shape, an "expansion fan" is created behind it. This expansion lowers the air pressure, which then lowers the temperature, which then (under the right conditions) causes the water vapor to come out of solution (condensation) and become visible as a "vapor cone". And this occurs because of two basic phenomena: 1) the direct link between pressure and temperature 2) the lower carrying capacity of colder air Is that about right?
@richardcloudbase Ай бұрын
Fantastic video. Just to be picky you are not seeing water vapor. When the water vapor in the air condenses, it becomes tiny droplets of water (liquid). The same as a cloud.
@tinglydingle 3 жыл бұрын
Thank you so much for making this. I've had so many arguments with people online about this, and now rather than type out a rebuttal each time, I can just link this video.
@morganmcintire2853 3 жыл бұрын
I tried to explain to my friend (who is in the air force) why these weren't shockwaves about a year ago and failed to convince him. Now I can just send him this video :-). Winning feel good.
@calholli 3 жыл бұрын
There's a short expansion fan ad in your nebula video.
@alanbejarano4940 2 жыл бұрын
Guile : "Sonic booom!" Real Engineering: "This is not a Sonic boom" Guile: ☹️
@Vrangelrip 3 жыл бұрын
I've never seen a crueler mind teaser than this.
@muffinman3052 3 жыл бұрын
To clarify: the electrons in the water are not moving faster than the speed of light in a vacuum, but they are moving faster than the speed of light in water. Light moves at different speeds through different mediums
@thisjt 3 жыл бұрын
5:00 I feel called out 😂
@Mshagy02 3 жыл бұрын
Man is releasing extended Snyder cuts of KZfaq videos
@bingsterc7621 3 жыл бұрын
Just ask Guile what are “Sonic Booms”. He's definitely an expert with “Sonic Booms”. LMAO. 😂😂😂🤣🤣🤣
@ishaanvohra2311 3 жыл бұрын
Wow, I didn't expect Real Engineering to delve into some particle physics with the Cherenkov radiation! What a pleasant surprise :)
@datgio7665 2 жыл бұрын
Aint no way you arent realising 60 minute videos, i love to listen to videos like that like they are podcasts, just like Everyday Astronaut
@terrymurray2164 3 жыл бұрын
Thumbnail for video.... That looks like the start of a Sonic Boom since the plane looks like it just broke the sound barrier...
@greeny5194 3 жыл бұрын
If shockwaves don't cause water to come out of the air than explain what you can see on the images of the Beyrouth explosion. I personally believe both effect can create water droplets, when pressure increases the temperature of water liquefaction decreases so if the temperature is cold enough I believe it can also create a cloud very similar looking to the effect of air expansion behind a plane
@namenloss730 3 жыл бұрын
5:20 "When an elecron travels faster than light" Yes, that did make me raise a few eye browse
@rsteeb 3 жыл бұрын
That's some real "Bravo Sierra" right there...
@Originalimoc 3 жыл бұрын
Super cool physics based animation
@seanehle8323 3 жыл бұрын
There are plenty of other ways we can directly see shock waves. Just not sonic boom shock waves in air. For example, turn on your faucet in an empty sink. The ring-like structure that forms around where the water hits the basin is a shock wave. One we're all so familiar with that we take for granted just how common it is to see a shock wave.
@SsKarthik0801 3 жыл бұрын
So he's just making instant clouds :D
@shinyamichimi114 2 жыл бұрын
I believe this is the same phenomena that you see on the edges of Formula 1 car rear wings in high humidity conditions