How Many Glass Panes Will a Bullet Go Through? - The Slow Mo Guys

Gav and Dan slow time down by 4000x to see the exact moment a 9mm bullet can't go any further through multiple panes of glass. Instagram - / theslowmoguys
Tik Tok - / theslowmoguys
Filmed with the Phantom TMX 7510
How Many Glass Panes Will a Bullet Go Through? - The Slow Mo Guys

[@GameGrumps]

I feel like this channel is secretly funded by a curious assassin.

[@AstraOG]

fancy seeing you here but yes i agree

[@LamboDEB1]

Whoa 🤯🤯

[@stone5against1]

"wonder how many headshots I can manage with one bullet if all my targets are lined up"

[@JohnDoeHZ]

Next up: The Golden Gun. Does replacing lead with gold make a difference?

[@I_killed_that_beard_guy]

It's me

[@jasonpatterson8091]

Not a big deal, but windshields aren't tempered. They're made of two pieces of normal, untempered glass that is cut then bent into windshield shape, then a layer of plastic (polyvinyl butyryl) is inserted between the glass layers and the entire sandwich is put into a giant autoclave (a pressure cooker, basically) where it melts and fuses the lites together. You can tell it's not tempered because windshields will chip or crack but don't explode in the way that a side or rear window does. You want the windshield to break and cave in but not explode in the event that either a sizeable object or a person hits it from either side. Source: Worked in a factory making auto windows, including windshields - broke enough of them to know tempered vs not

[@kebabit707]

@@jacobmancuso2251 it's a simple correction and some cool information some people might want/need to see, there is no need for someone to ask, and if there was, who asked YOU to ask "who asked"?

[@jasonm5874]

Yep. AS1 is lami for windshields and AS2 lami covers side glass like the newer Dodges where the doors aren't tempered and old cars with flat glass side windows that were lami.

[@ankitmitra2383]

lol like a cheese slice between 2 slices of bread after being microwaved

[@jasonm5874]

I also recall that some Euro imports that weren't meant for the states having tempered windshields that had to be replaced with AS1 lami to meet out standards.

[@AM23.]

Thank you, I install windshields and I was like I don't want to be that guy that leaves the comment

[@johnrishton510]

I'd love to see this done with heavily colored glass, so we'd know if the fragments of glass are pushing through each piece. It would also be beautiful I'm surprised the bullet fell behind some of those shards in velocity as well

[@Crushnaut]

Would also be cool to see the separation between the panes tested. I bet the glass chunks lose a lot of energy the further they fly.

[@jessieornot6121]

well, if the bullet hit a shard head-on at a later point it would shove the glass forward, plus the glass was in front of it from the beginning

[@brockoala2994]

This, please.

[@JwhateverJ]

Yes...more color. Everything should be colorful! :)

[@RandomCarrot2806]

Love how the glass mist as it travels around the bullet looks in slow motion. I wonder if you had different colored panes of glass how the colors would mix, would you be able to identify different layers from it's color creating a rainbow effect or would it all mix together?

[@raven4k998]

how far depends on the caliber of the bullet for one thing

[@charlieevergreen3514]

Different colors of glass have different metals incorporated into them, so their hardnesses vary by color, which would affect the results, but I agree that it would be cool to see that experiment!

[@kyle18934]

@@raven4k998 and powder load. idk, size might be more important here though. like an arrow in water vs a bullet in water.

[@raven4k998]

@@kyle18934 would it really I mean they are both going to make a splash when they hit the water the only reason the bullet would explode with contact with the water would be due to a higher speed then the arrow not cause of size I would say that bullets speed plus mass of the bullet both play a role in how many panes of glass the bullet penetrated

[@kyle18934]

@@raven4k998 they bolth definitely play a role, but what you said about thw bullet disintegrating will play a large part. the other part is the bullet may have a mass energy dump sooner rather than later. I'd post a link of the video I'm going to recommend, but it will just be deleted by Google. it's made by whoteewhoo, and it's called 30.30vs .308 vs 30.06 vs 300wsm water test. it shoes that the heavy slow 30.30 goes pretty far with its slow heavy bullet. also I'd recommend looking at the aps under water rifle. it was a rifle designed for under water firefights... (the cold War was a weird time) I don't remember how far they went under water, but it was impressive. the idea was since bullets don't travel well in water because the bullets speed is slowed down tremendously in water, they would make it fire darts. heavier darts made to be heavy enough to push through water, but have enough speed to do harm. there is an entertaining video I'm going to look for on something like this some guys made. idk if I'll find it.

[@blobfish.]

Gav, I will forever love when you edit in the speed of an object (i.e. 4:33) so we can visually understand how much something's momentum is changing as it moves through the frame. It's stuff like this that makes your editing so bloody enjoyable.

[@SwainixFPV]

It's nice but like cmon... km/h plzzz

[@catgoarcke]

Went into the comments to make this exact comment. Well put!

[@ScKTM68]

@@SwainixFPV no no no, only cheesburgers per minute

[@blobfish.]

@@SwainixFPV oh I definitely agree with that 😂

[@SquirrelTheorist]

Exactly!! Very well put

[@zaaragos1993]

Was so confused as to what Gav was doing at 14:15 then realised that in the next shot his beard and hair is shorter meaning the mirror shot was done later and just inserted at the end. Had a chuckle when I realised what he was doing

[@EpicATrain]

I noticed that too! That one section was filmed weeks later and spliced back into the episode. lol

[@3alabo]

I thought he had a schizophrenic breakdown

[@SuperBman1221]

AND different shirt

[@ottard]

A slomo of chainsaw cutting would be interesting - to really see how the tooth cuts. John Adler does a great job explaining the theory.

[@jeremybusbee7799]

"Many blade go fast in circle"

[@ottard]

@@jeremybusbee7799 Im sorry, what do you mean?

[@jeremybusbee7799]

@@ottard I just explained a how a saw works to you

[@ottard]

@@jeremybusbee7799 Good for you.

[@anonymousbanana204]

@@ottard Not good for him, good for you. He just told you how a chainsaw works🥇

[@clerklierbrush0869]

These guys are one of the core channels of KZbin and what it used to be. I'm glad to see them adapt and continue this good content. Love it!

[@adamplace1414]

Dan says about destroying a GoPro "Was I the last person to do it? I shot one with a cannon" in the same way I'd say "Do we need milk? I bought some yesterday." What a gloriously odd life these two lead.

[@Gary_your_snail]

Lol

[@thithi8793]

ok

[@jsalsman]

Great attitude and collegiality they have!

[@x86_architecture10]

ok

[@ApotheosisStone]

I remember a kid brought a sample of bulletproof glass as a show and tell and they mentioned it was 7 panes thick glued together. I'm curious how the result would differ if they stacked the glass so it was touching each other. The cloud of shrapnel wouldn't be clearing the way for the bullet and it would be great to get a shot of a bullet stuck part way through the last pane coming at the camera.

[@ShasLaMontyr]

I always appreciate hearing Dan going through the steps of safety with the gun, there's no joking about it and it's not removed from the edit.

[@Kiina312]

It’s is actually one of my favourite parts, to hear him go through it in the background. I grew up around fire arms (I’m Australian) which is kind of rare here now, so to hear Dan use the safety protocols is really comforting for some reason.

[@dmpyron2]

What they don’t show I’m sure happens is “ears, make ready …”. You don’t see the hearing protection but if they’re wearing eye pro I’m sure they have plugs.

[@FireStriker_]

I’m always loved hearing that. One of the things that makes me love slow mo guys so much

[@marioschaffner5395]

@@dmpyron2 yeah, you can see the dans earplug at 4:22

[@pinkcupcake4717]

I find it very comforting. Safety first!

[@extosshady1421]

This would’ve been a pane to clean up

[@hamishgamble3870]

Be careful you don't sit down, that would be a pane in the ass!

[@xenogamer101]

😂😂😂😂I'm having belly pane from all this laughter

[@PastelPiku]

If you guys ever do this again it'd be super cool to space the last pane out further so you can see the bullet bounce off with less of the debris in the shot, though that would probably be super difficult as the bullet sort of changes trajectory. Still incredible footage you guys capture with this one.

[@mattfennell9852]

I appreciate your continuing to keep Dan’s gun safety call-outs in the edit for each shot. 👍

[@thiscard]

agreed

[@tommyvincent399]

6:49

[@Dad......]

@Jim Jam FFL owner in America here. 95% is a high estimate, and it's common practice to recommend training and offer referrals, but I do wish it was legally required. In a country with no minimum military service, I feel training to own a firearm should be standard. Why do we need driver's licenses but not gun owner's licenses? Because so-called "2nd Amendment Advocacy Groups" have people paranoid about gun registries and confiscation because they want to avoid as much regulation as possible.

[@vertipop]

@@Dad...... wow. that’s ridiculous, america is strange

[@jmayer29]

@@Dad...... Your privilege to drive is not a right enumerated in the Bill of Rights, hence the difference. I agree training is important and a damned good idea, but that doesn't mean I support infringement of the Second Amendment.

[@gweria]

Honestly just seeing how much each glass pane decelerates the bullet really helps visualise why ceramic armor plates are so effective.

[@gtarules1]

Does it?

[@dustsans9859]

?it Does

[@Nillix1]

?ti seod

[@RetroLifes]

@@gtarules1 * *vsauce theme begins* *

[@demp11]

@@RetroLifes or does it?

[@Outfitperfect]

3:07 I LOVE seeing proper handling of guns!! Just the «safe» thing really made me happy for some reason.. respect for weapons is important!! They’re deadly if you can’t use them properly..

[@averythesuperhero]

They're deadly if you do use them properly too lol they're a deadly weapon (But I do know what you're saying)

[@RealNaisuCinema]

@@averythesuperhero dont feel bad i was thinking the same thing lol.

[@Down.Range.]

Aren't you a genius

[@Turtle9815]

I think what he means is that of friendly fire or self inflicted shots. Although they still are deadly even with safety on and no mag, it's still a blunt object. But that's waaay rarer to happen unintentionally than a gun going off

[@foreverblessed3511]

Your a smart cookie ain't ya

[@AaronMittelmeier]

These boys show us fun and physics in a beautiful way. Thank you gentlemen. That last shot, with the bullet coming 'at me'.. you captured something special with this one.

[@arcticangel1628]

2:26 & 4:33 Imagine that bullet being Superman smashing through walls in slow motion.

[@TimeBucks]

This was definitely one of the best slow-mo uploads

[@BeeKeeper-]

Yes

[@dasloco121]

The absolute legends out here continuing to deliver the most fascinating, wholesome content around. Never change, lads.

[@datgaydangernoodle1315]

They never have, and i dont think they ever will!

[@vox.6607]

nice pfp

[@nikmrn]

Bot comment lmao

[@nikmrn]

@Posejdon ???

[@Pman353]

@@nikmrn it’s a bot

[@asclay2004]

i love that either from his time in the military (or his own curiosity and edification) dan is able to provide all this insight into bullets in this video and the tiny gun shooting the bullet video

[@justsomerandomname2067]

I really like the sound design in this video, it really adds so much

[@glenngriffon8032]

As much as I like seeing Dan play the goof who always ends up in a pratfall or something silly like that i really like these moments where he shows off how knowledgeable he actually is. Telling us about bullets, or his knowledge of explosives. It's just cool.

[@joshuakuehn]

It's so easy to forget he's ex military

[@tmobile2120]

anytime fire arms or anything military, dan takes the lead

[@pat2rome]

Same with Gavin unloading cinematography knowledge!

[@isturbo1984]

guns are cool

[@transtubular]

@@joshuakuehn But how much of his service actually required him to handle/use firearms? Besides basic training?

[@phillipsmith4979]

Looks like you did a great demonstration of the space armor effect. The spacing allows some of energy to dissipate. It would be nice to see a control where the glass plates aren’t spaced.

[@cgi2002]

Not just spaced armour but the spalling effect. The displaced material was just as effective at breaking the next glass pane as the bullet in many of the panes.

[@gareththompson2708]

@@cgi2002 It's the energy the bullet initially transferred into the array of panes, more than the bullet itself, that is breaking the glass. On the first pane all of that energy was concentrated in the bullet itself, but more and more of that energy was dispersed into the glass on the later panes.

[@viran9122]

take it a step further and just do a big block of glass

[@sadlerbw9]

I was thinking the opposite: space the panes further apart and see if that reduces the number of panes it goes through! Actually, I think I'd like to see your suggestion as well.

[@barongerhardt]

At NASA we called this kind of armoring a Whipple shield.

[@emreb.2159]

You're actually able to see the stages of deformation on the bullet through each layer of glass, that's crazy

[@chimpaflimp]

I love these videos, where you can really see Dan's military knowledge shine through.

[@minecrafter0505]

0:33 now that is an unfortunate quote if taken out of context... "It's definitely the sound that precedes a bunch of kids scrambling in different directions. - So we're gonna be using a 9mm round"

[@Am_Cookie2436]

Someone, somewhere, probably said that exact thing while doing it.

[@_black_7790]

Oh my god, Gavin why!

[@Dark0neone]

they've really acclimated to American culture

[@Kaje_]

Cursed indeed.

[@kyle8971]

You can tell these two are best friends and equally as interested in the projects they do when you hear them simultaneously say "wow" at seeing the bullet bounce off the pane of glass at 12:19. The best part is knowing there are thousands of other people who joined them in that moment for that exclamation of wonder.

[@cabbage4994]

Also just the exchange at 6:07

[@bananapufferfish3626]

RIP Dan's lab coat

[@Yarnballer]

I think this experiment would be interesting if they used panes of glass of multiple colors (eg, red, blue, yellow, orange, violet, etc.) to track what glass remnants continued moving forward and at what point those glass remnants stopped. In other words, would any glass shards move between the panes (or would they be deflected by the next pane) or if they did move at what point would they stop and at what rate would they stop.

[@RyuuTenno]

“Let’s be honest, when have we ever given something useful?” Dudes, I’m certain Hollywood absolutely loves you for these videos cause you’re able to slow everything down considerably and give other researchers information they’ve never had before.

[@FUBARguy107]

Did you know Gav did the slow motion for the newest Judge Dredd movie?

[@grdprojekt]

@@FUBARguy107 when you say *newest* I thought they're making a new one, turned out Gav did make the slow mo sequences in the 2012 film. Dope

[@FUBARguy107]

@@grdprojekt Sorry for that confusion haha

[@ThatGameGuyy]

While watching this I was wondering what percentage of the glass dust from the first pane made it through to the end, perhaps a follow-up experiment with colored glass could elucidate that?

[@ericglenn9984]

The spirit of old KZbin is kept alive through this channel.

[@Dagget08]

Awesome video as usual guys :) But I have to say I loved the beard interaction around the 14:15! That's awesome... made me laugh :) Don't think a lot of people caught that one :)

[@dylantobler1135]

I caught that too! Spent like three minutes trying to figure out what they were tripping about

[@HiImBQ]

Wondering how many days it's been :D

[@coolguyhino92]

im so lost..

[@icky_thumper]

That is hilarious! I noticed it too, and I figured I couldn't have been the only one. Funny that it's such a small group of us that noticed the beard.

[@PosyMusic]

Amazing shot from the mirror! (And very subtle joke at the end...)

[@michel3876]

Where they touch their faces? I didn’t get it

[@xRobotBoyxBR]

@@michel3876 them hair and beard are grown

[@hazrduspog2868]

@@michel3876 they filmed the last shot at a much later date, different table and all, and their beards grew a bit, subtle jokes

[@jklmnopski7421]

Subtle stubble joke

[@michel3876]

@@xRobotBoyxBR haha wauw thanks I didn’t catch that at all

[@wangchobo7647]

In terms of usefulness and information, you guys are actually extremely helpful to vfx artists as your videos are excellent reference footage

[@thoatran2718]

ok

[@paleporcelainkat]

I think one of their videos was inspiration for an explosion in a Star Wars movie

[@blobfish.]

@@paleporcelainkat yes! It was in Solo 💥

[@dhoffnun]

Right? This reminds me of that scene in the first Matrix movie when the helicopter hits the glass and this ripple goes out before the glass all shatters - you can see the real version of that here if you look close. Just a slight warping alongside the cracking. So cool.

[@Dayvit78]

Have they ever collaborated with Corridor Crew?

[@exothermal.sprocket]

For those familiar with ballistics, this is what happens with a low standard deviation. When you've chosen a brand of ammo that has a very consistent speed between one shot to the next, consistent bullet weight from one shot to the next, your impact energy is also going to be quite consistent.

[@DotKom01]

2:22 "I think I underestimated how powerful a 9 mil round is" Indeed. It can, after all, blow your lung out of your body.

[@Overthinking-rain]

you shouldn't even underestimate a .22 LR

[@unconcernedcitizen4092]

It absolutely cannot blow a lung out of a body.

[@bigbaddms]

@@unconcernedcitizen4092 That's an O'Biden quote

[@kingcosworth2643]

@@unconcernedcitizen4092 That's not what Biden claims, got to be true

[@AaronBrooks1]

Props to the sound engineering at 11:31 which may be the most satisfying bullet sound I've ever heard.

[@mattgentry6387]

listen to it at .25x playback speed! Its such a tasty sound.

[@gavinnelson3402]

At first I doubted, but that is CRISP

[@zillbot]

Funny thing about that. They fake all the sounds in slow motion. They did a whole video on how slow motion audio is garbage and how they create their own audio.

[@quintonwilson8565]

Better than the movies.

[@quintonwilson8565]

@@zillbot There's no such thing as slow motion audio. Sound travels too slow.

[@guitarsimon1]

Dan’s legendary consistency once again, I don’t think Gav replaced him with a robot during the lockdown, I think he was always a robot.

[@Solnoric]

Just took off his skinsuit so they could send it in for repairs

[@alexfranz817]

He was in the royal army.

[@ritsukinoue]

So, in the videos he wasn't in, he's probably somewhere for maintenance

[@csn583]

Robots are losing their jobs to Dans.

[@isturbo1984]

thank you, for calling it the lockdown not not "the pandemic." too many people have been tricked into thinking authoritarian governments imprisoning everyone was necessary and the fault of a virus.

[@insomniacryan9916]

One of your best films ever, boys. Simple and glorious, with all the angles and moments I wanted to see, and plenty of time committed to the actual slow motion shots as usual. 10/10

[@jblen]

That shot of the bullet heading towards the camera, even though it's only a mirror, is I think the coolest clip to ever come from this channel. It's so cool it seems like it should only be possible with VFX but it was done for real by just 2 dudes and some glass.

[@Condor_]

I didn't even realize the suspiciously grown beards in between shots until you drew attention to them. I take it the last shot couldn't be made for a bit? Otherwise this was exceptional. Watching physics in motion like this is visual poetry. That mirror shot was pristine!

[@pilotben97]

Love the nod to filming at vastly different times 14:13

[@self1sch]

I don't get it lol

[@Travelinmatt1976]

Oh, I couldn't figure out what they were doing!

[@HueMann]

I noticed the difference even before they drew attention to it, and was like "wait, what?" bahahah. Love the subtle joke!

[@N0Xa880iUL]

@@self1sch The moustache and beard is bigger than in the start of the video. Suggesting that the whole video wasn't shot on the same day. I think it's probably because they were short on glass panes and the mirror for the last part.

[@mrbfros454]

I didn’t even understand what they were doing there! Would have completely missed it if not for this comment. Ty

[@twopintzVT]

I love the wonderment in their voice. After all this time and all this content they're still curious and fascinated by their findings. Cool video

[@DoctorPhilGud]

Props to your foaley guy. It sounds super good. I love the change in speed of the sound as the bullet gets slower impacts

[@blobfish.]

Gav does all the editing himself including sound 😊

[@helenchelmicka3028]

That's just what I thought! Great foley

[@Trumplican]

8:45 the shadows of the cracks appearing on the wood is so awesome

[@keinmyster8549]

@Whgu ybnm ?

[@DarkAngelEU]

I've been replaying the clip out of sheer amazement for the delay between the cracks and their shadows being cast on the wood. It's crazy a camera can catch that delay.

[@Trumplican]

@@DarkAngelEU yeah totally insane! As a kid i remember static and heavy grain in the old vhs recorders LOL it's nuts how far technology has come in 20-30 years

[@CarFanatic219]

Another fantastic video by the lads! The little continuity joke 14:15 with Gav and Dan having longer hair and beards and then cutting to the outro with haircuts and trimmed beards is hilarious to me lol

[@AcheForWake]

Was expecting a manscape promotion lol

[@Real28]

Ok that's what I thought was going on. I didn't get it until they cut and I immediately realized Gavs beard was half the size.

[@timhoogland1397]

haha thanks I was looking for an explanation

[@JoshuaP94]

This has to be one of the most satisfying videos you’ve made. Good job guys, keep it up!

[@engineeringworld.]

That was just incredible! Love how the bullet deaccelerates each time it hits the glass pane

[@euy8593Etjgb_]

The one time a verified account gets barely any likes

[@AnIrishPapaya]

13:30 Gavin did an excellent job with creating sound in this one. So believable even though its all crafted behind the scenes! I love the little chime noise at the end

[@peterelfman]

I noticed the sound was above and beyond as well. They're definitely leveling up!

[@syntaxusdogmata3333]

Last time I was this early, Dan had a full lab coat.

[@shannendawes8725]

Wait... that's a lab coat?? 😲

[@Pauly421]

That last shot made me gasp! Gav you're a genius. Also Dan is lethal with that pistol.

[@kyrockhounder]

AWESOME!!! I love how well it captures the bullet going through the glass.

[@IRTEHBATMAN]

Being able to capture the bullet coming straight down the frame was such an incredible thing to see!

[@OxibanCraft]

I think it would be really interesting to see a similar setup but using a polarized light source (and filter) to see the tension inside the glass as the bullet deforms it. Should make for an awesome shot.

[@c6rbonbased120]

This last mirror shot was insane, like death coming for you. Great video like always, thanks. Maybe there are kinds of glass that do not shard as much for better visibility of the bullet? idk.

[@kevincostanzojr8308]

Gav’s beard changed sizes like three times lol

[@TheBluerayxx]

I love Gav's "Is this it??" and Dan, whose been in the army, is just like "Yep" so quickly.

[@MrZarewna]

That ending shot with the mirror was absolutely glorious. It was even better than I expected it to be.

[@SeanFerree]

Right! Same!

[@gregsquires6201]

This video is one of your best ever! Spectacular and surprising results. Well done.

[@AayushSingh]

"But, to be fair, when have we ever been that useful?" Loved that confession from Gav!

[@allandandeneau7357]

For a couple of slo Mo guys you both certainly grew your beards fast in the last part of the video. Great subtle effect at 13:47. I don't think many of your viewers caught that one.

[@the_meerkat1386]

ya they must've recorded the final clip first. I rewatched to see if it was just clever recording, but the final clip was recorded beforehand.

[@bertgoat8183]

@@the_meerkat1386 The way it was edited, it looked like he felt his beard for glass shards, and then shaved it just to be sure it’s all gone

[@the_meerkat1386]

@@bertgoat8183 oh ya it was very clever, it looked like they trimmed there beards for the video due to the glass, but they also looked confused as to how there beards would have grown back.

[@the_meerkat1386]

@@bertgoat8183 It's possible that they felt there beards for glass, and later realized that they could do something clever with the clip.

[@Petertronic]

I think they came back to film more after having the idea to use a mirror 😄

[@sdommiller]

It’s incredible how much you guys have improved over the years. And this one is aces. You two should be filming effects assets for Bond title sequences.

[@marveloussoftware4914]

Cool video. "The lead must be . . . somewhere else." Brilliant deduction, LOL!!

[@Filbie]

Really cool stuff guys!! Appreciate Dan’s gun safety as well ✌🏻

[@KingKaosUnkgedOfficial]

I have been watching the slow mo guys for years and I am not going to stop watching. Their science experiments are incredible! 😲

[@wedgie502]

This is where science meets art, in my opinion at least.

[@Botinanutshell]

Agreed

[@doctorboi4314]

Its not science, they aren’t testing anything, calling this science is like calling using your eyes science because you are viewing something in a certain fps

[@wedgie502]

@@doctorboi4314 right, there isnt any science to photography. no type of engineering required to figure out how a camera works. And I guess their visit to MIT didnt further the cause of science.

[@chrisditoro3876]

@@doctorboi4314 I would disagree there. It might not be incredibly rigorous, but they started with a hypothesis “enough panes of untempered glass will stop a 9mm bullet”, asked a question “how many panes”, built a test, got a result and then repeated the result several times. That’s the core of the scientific method.

[@FOFBASS1]

That last shot has got to be one of the best shots I’ve seen you guys to. An absolute masterpiece. Fantastic and amazing job guys.

[@SeanFerree]

Agreed!! Well said!

[@Andreas-ov2fv]

Now I just want to watch Dan run through 11 sheets of plywood in slow motion, Daniel Craig style

[@ayayatn4731]

Moral of the story always bring 11 pieces of glass with you

[@Artaimus]

I think the best part of the amount of times they've broken glass is that they constantly see the Matrix ripple effect. Not just a cool looking effect, but /what actually happens/ when you hit glass with a shockwave of some kind.

[@tompw3141]

Glass rippling will never not be amazing.

[@pat2rome]

@XD I always thought that ripple looked stupid and fake in the movie, then years later from their "throw a hammer at a mirror" video I realize it's 100% accurate to reality. Absolutely mind-blowing.

[@justinteal495]

The massive amount of hair and beard growth by Gav is truly the most impressive part of this video

[@robertlewis4666]

AMAZING! Simply gobsmacking amazing! Bloody well done!

[@chandlerhansen6841]

I would love to see you guys tackle non newtonian fluids, especially shooting at them.

[@DinnerForkTongue]

They have some non-newtonian fluid videos, in fact!

[@mtrivelin]

Congratulations guys! It's the most sophisticated awareness test I've ever seen. I had to watch it several times before I noticed when Gav and Dan changed their shirts and let their beards and hair grow, around 13:46. Well done! ;) Your footage breaking glass is amazing and beautiful. I have 3D rendered a panel being broken by an object and it takes many, many hours. I can imagine how complicated it would be to render a simulation of a bullet passing through several panes of glass as you actually did. It should take days of calculation and endless rendering time.

[@greybeard5123]

This really seemed like it was filmed in a day. I would never have noticed the shirt changes or the thicker beard/hair on my own.

[@E2O10]

@@greybeard5123 They alluded to it before the outro. Gav scratched his beard and walked off, then dan did the same

[@Lizlodude]

How did I not notice that, I though I just missed an in-joke or something lol

[@grimeyfresh9309]

I would have never noticed, wow! lol

[@MeltedMask]

oh wow. I did have nagging feeling that something was little off but still didn't realase what. Most of the video is filmed in springs. Mirror part is filmed in later. If you watch background, its easy to see when tree is bare, then lushy green and for the outro its again bare and dry. And that explain why they didn't achieve perfect stop at mirror take ( little differentiation to distant to firearm etc.)

[@ThatGuyLachlan]

Guns and glass shattering? Classic all slo mo guys, love it!

[@legate5923]

Don't read my name

[@smugslider3690]

you're right, i wont read your names

[@poo2uhaha]

@Don't read profile photo Don't google dinosaur with 500 teeth 💀

[@mangotheproto4714]

That last shot looks like it could be used for an ad for a movie

[@micaiahstice3355]

That’s absolutely interesting!! Could not stop 🛑 watching what was going to happen next!!!

[@blobfish.]

Worth pointing out that although it "went through" 11 panes, you showed it didn't necessarily break all of them by impacting the glass (the glass shrapnel did), so Dan's guess of 6 was actually pretty good.

[@pierrecurie]

You still wouldn't want to stand behind glass #7

[@ndlz84]

I'm not sure if the glass was breaking it or if it just looked like that as the dust hit the next pane and spread, but the bullet inside actually broke it slightly later

[@mb1287t]

Curious if they stacked 11 panes together and set one behind it if it would break the 12th.

[@pierrecurie]

@@mb1287t The separation really attenuates the energy a lot.

[@OnceShy_TwiceBitten]

@@pierrecurie idk after that one it was enough to break glass, but at the speeds they showed past that pane it would bounce off your soft tissue.

[@thecatherd]

I LOVE that mirror shot, looks like some nutty practical effects for filmography.

[@andersmalmgren6528]

You guys were very helpful used your data to calibrate the ballistics in our game how much a 9mm slows down in glass. Thanks a bunch! (Please do a 5.56x45 and 7.62x51 now ♥️)

[@kurosakiichigo7475]

You made a game where the speed of a bullet is a relevant thing to calculate? Care to explain?

[@andersmalmgren6528]

@@kurosakiichigo7475 yeah sure. It's called terminal ballistics and it's the study what happens to a projectile when it hits a surface and transfers it's energy. When it comes to external ballistics (How drag affects the bullet) we use known calculations to calculate the retardation using a ballistics coefficient. But when it comes to terminal ballistics the science is much more complex. So we have chosen to use graphs and extract data points from a various sources on the internet to fill these graphs. I can't link but if you Google "mda digital terminal ballistics" you should find a KZbin video showing our ballistics. Please let me know what you think or if you have further questions. :)

[@leonardoklausmann7972]

wut game?

[@andersmalmgren6528]

@@leonardoklausmann7972 the game is called Virtual Warfighter :)

[@tipi5586]

How have these guys managed to outdo themselves, yet again, however many years later? One of the best Slow Mo Guys videos ever.

[@tridocao143]

ok

[@Pauly421]

@@tridocao143 m'kay

[@PierceArner]

That was absolutely _INCREDIBLE_ footage, and so crazy to have had a single pane survive getting shot twice!

[@CoeCoeLoco]

*Freak On A Leash* was a CLASSIC video! Great shout out for inspiration...

[@LukaJebo]

i love how they were like the bullets gone, then found both of em so quickly

[@andrewgillis3073]

I’d love to see this done where the last pane of glass was further away from the others, so all we would see is the bullets and not the glass shards…. Still very cool, and Dan is a hero for demonstrating gun safety protocols.

[@GoHerping]

This is possibly the first video I've seen from a non-firearm channel that doesn't stress me out

[@thomasa5619]

To be honest you don’t really see any gun safety, you only hear him say it’s safe

[@gobblinal]

@@thomasa5619 That's a huge part of safety. Telling everyone else what's happening.

[@chregig7967]

@@thomasa5619 they can't show guns in the video or it'll get demonitized

[@apaceproduction]

Gavin really deserves an award for his massive contribution to KZbin. He’s the best!

[@xr6lad]

I take it you’ve never seen mythbusters who did all this 10-20 years ago. You’re 5?

[@godzilla001]

@@xr6lad citation needed

[@blobfish.]

@@xr6lad watching MythBusters on KZbin 20 years ago, were you? 😂

[@Kellanium]

officially the coolest thing you guys have ever done, that last shot.

[@TheValSawyer]

Whole new meaning to 'get the lead out'. I love you guys. I want to live next door to you.

[@soslunnaak]

dan is underated and a huge part of the slowmo guys he definitely earned that play button

[@billyhendrix5544]

He is literally 50% of slowmoguys

[@WestonNey]

That last shot with the mirror was one of my favorites! Such a cool perspective!

[@s.c.112]

This is a beautiful display of matter in extreme environments! Well done 👍

[@iggysfriend4431]

Absolutely stunning photography.

[@mansfieldtime]

My favorite part of the video other then a bullet bouncing of a pan of glass, was the calculations of how the bullet slowed from each impact. And then it was amazing that you found the jacket right next to the lead.

[@craigmitchell8892]

big love to the sound designer in this one, those glass noises were so satisfying

[@RoverIAC]

good point, that sound would have been added in edit.... very nice.

[@craigmitchell8892]

@@RoverIAC there was a video from a few years ago with Gavin and the guy who does the foley/sound design. Pretty interesting ☺️

[@IsraelStorey]

People used to think the audio was done by someone else since there's a guy who does just the audio for any slow motion stuff on Smarter Every Day and it sounds very similar, but Gav actually does it all himself. kzbin.info/www/bejne/e3mnZoOIp7hnhNU

[@PharaohOfTheDamned]

No but actually

[@blobfish.]

It was Gav! If it's not him that did it he will put the sound designer in the description. So in this case, it was all him. His editing is incredible.

[@swordsmancs]

It’s wild seeing the speed of the bullet in actual mph, and knowing that the bullet goes from “just got fired, feeling good” level fast to a speed low enough you could probably match it with a decent enough throw

[@jakegrist8487]

One of the most interesting takeaways for me was that the intermediate panes take a lot of damage just from the shrapnel of the preceding pane. I hadn't expected that.

[@lduker9731]

I love at 10:35 a lot of glass just dumps itself right in the garage can.

[@luc_official]

11:28 That shot looks unreal! It looks like a 3D render. So cool!

[@mtrivelin]

I made a render of a pane of glass being broken and it took many hours per frame. Imagine that it would be an incalculable time to try to render so many overlapping panels, particles and shards of glass. But I would like to try.

[@omas7609]

During the second shot you can see the shadow of the cracking glass on the wood.That’s so dope.

[@bny9318]

The last footage was straight out of a fever dream anime project..looks so goood.

[@JHNielson4851]

I would like to see the same test with a much larger spacing between panes. e.g. 1-3 feet. This would lessen the effect of glass shards breaking the next pane. Also a test with the glass panes at an angle to the bullet e.g. 30-45 degrees, to see how much the bullet would deflect.

[@HiddenAgendas]

and another test where they just stack the glass panes onto each other with no gaps.

[@stashbuster]

@@HiddenAgendas I came here to say exactly this :)

[@Alex_Meadows]

@@HiddenAgendas I was thinking the same thing. I don't see why it should make a difference, but my gut feeling is that it would get through fewer sheets if there were no gaps.