Massive Explosive Chain Reaction at 200,000fps – The Slow Mo Guys

G: Hello, I’m Gav.
D: I’m Dan. G: We’re the slow mo guys and today
we are without lab coats. D: Well, we got these lovely things instead.
G: It’s true. We’ll start without our phones So there’s no microphones, but hopefully that one’s doing alright We’re here at the Colorado School of Mines and what are we going to be doing, Daniel? D: Well, when you’re mining you need to use explosives a lot of the time. So that’s what we’re gonna be doing, we’re gonna be using explosives. G: It’s quicker than a shovel…
D: Exactly, except for instead of using it for mining, we’re gonna be using it for slow mo guys purposes G: Yeah.
D: Which involves a toilet, a safe, some mannequins…
G: Some mannequins are going to bite it. D: plenty of explosives G: We also have an absolute myriad of phantoms to get absolute range of resolution and frame rates. So let’s have a blast Because of the puns and stuff D: I’ve destroyed a few bogs in my time.
G: You do like your spicy food.
D: It’s true. But now we’re literally going to destroy a bog. Okay. All right. This is pretty savage. So we’re gonna have det cord coming around and up into the system which is going to be full of petrol and then the detonation train will go down here into this five pound booster charge of high explosives which is going to detonate and cause a shock wave and hopefully destroy the bog.
G: So you’ve taken care of all the explosive putting and over here, in this giant metal protective box, we’ve got two Phantom v2512. This one is set to 28.500 frames a second. This one is set to 207.000 frames a second. So it’s very low resolution. But very very fast. Also up there in that yellow box we’ve got a v2640, which will be HD about 12 000 frames a second. (explosion sound) All right, let’s watch that back. Oh!
D: Oh wow! G: This– where’s the toilet?
D: It’s just disappeared G: I didn’t see a single piece. D: Not one piece, man. I just saw a big white bright flash. It was so bright. G: Maybe it went out the back? (explosion sound)
Both: Whoa! G: And all of this white cloud here is all petrol. D: So did we not see it from the other angle because the cloud covered it and now we’re seeing the viable bit? G: Yeah, I think or maybe it just went up. Look. It’ll light up out It looks cool.
D: Look all this. All of that is lighting up now. Look at it expand. G: Oh man, so scary. Tell you what, the dynamic range on this camera is not bad. Like it’s pretty much held all of those highlights, even though we’re such a higher ISO. D: You know it’s also really cool as often you don’t see a big flaming explosion with rubble going everywhere. It’s just a flame explosion. D: Whereas this…
G: Toilet-y shrapnel. Well, that’s where the toilet was. D: It’s– I think– There’s no pieces of it left. It’s literally dust. It has been entirely eviscerated. It’s dug a… pretty much a crater and cleared the area of stones completely. G: So this what’s up there with those guys? D: Wow! I’m touching it. Cheers for that. G: Next experiment.
D: This is the beefiest safe we could find for 150 dollars. I think it’s about 150 years old as well. G: I love how we paid 150$ for a safe that doesn’t work. D: We’re just trying to get into the safe, like if you imagine if you’re a bank robber, we’re gonna try and just blow a hole through the door. G: Yeah, this safe seems to have lost most of its concrete. But we’ve got this barrel here to see. Hopefully, we’ll see it come into there. D: Yeah. So what I’ve got here is a shaped charge. It looks funny because it’s got a copper cone inside and packed in behind the copper cone is explosives. This is the det cord. It’s what we use to initiate it. So explosion will come down the det cord, down here, hit the back of the shape charge and the explosive explosion the detonation will start at the back and travel forwards. What that’ll do is force this copper cone into an inverse jet so it will– the back part here, right the back, will come out here before this part even gets it and it will form a jet and that’s used to penetrate things like tanks armor or safes or anything like that and the correct– you have to have something called standoff and that’s six times the diameter of the cone which means that that’s about 23–24cm away from what you’re going to penetrate because that’s the width. The width is about 4cm. G: So if you had it too close, it wouldn’t be as effective. D: It wouldn’t be as efficient. The copper jet wouldn’t have reached peak, like, penetration capability. (explosion sound) G: I’ve never seen a shape charge in slo-mo.
D: Neither have I actually, not properly. ‘Cause they’re usually a part of– Both: Wow!
D: What?! G: That was absolutely instant.
D: Whaat G: All right, wind that back, hold on. It’s honestly like when a meteor enters the atmosphere and you’re watching a big ball of light coming through the air. D: It’s the same sort of speed as well, I feel like. G: The cup has already gone into the water And then when we spin on you’ll see that miles later the barrel comes up D: Oh, I just love how directional this explosive is. and that’s what it does. It’s its job. G: Literally nothing went anywhere else. D: Oh, perfect, look at that! Hang on. So it went into the barrel but it didn’t come out the other side, which means there must be some copper at the bottom. But it’s annihilated all the concrete around it it’s like you see all this concrete here yeah that was in the safe and I know we say this a lot. But like it’s nothing. It’s just a skew solid Mel So all of the shaped charges I’ve used before in the military have been solid copper lining Yeah, whereas this is an oil and gas shaped charge and it’s actually made of copper powder. So there won’t be any Solid bits of copper anywhere and you can see here. That’s what that is. Yes. That’s what that is That’s a smattering of copper powder. And before when you ones that are used against tanks and things you can actually see the copper That’s left over in the hole that makes because it’s solid copper. So we’ve got Doris and Frank here, who are Retired mannequins. Well, I’ve noticed that Doris’s fingers come off. Yeah, that’s why she was retired to shed an industrial accident This is a shock tube. Yeah and has inside it’s called a dust explosion which travels down the tube and 2,000 meters a second and that’s enough to initiate a detonator Which is then enough to initiate det cord which is what it’s used for But what we’re going to do is trail it all the way from where we are All the way down swirling around it’s going to come to doris here. We’re going to wrap it all the way around doris Like this down to the bottom where we’re going to hit a detonator Into some det cord which is then going to wrap all the way back around her around her here And then that will actually explode and hopefully sort of obliterate because this is just sort of quite safe It won’t do anything to her and then the det cord this is quite long It’s gonna travel from a neck all the way down to here where we’re gonna have a shaped charge Which is then gonna go through what’s his name Frank through Frank? Yes, Frank through Frank and then we’ve got some foam casters on the other side that all hopefully explode when the Copper jet manages to go through so this is a huge chain reaction of a bunch of different types of explosives It’s a explosive train is what it’s called. So you start small with something like this Yeah, you’re going to prime explosives with detonator and then into det cord and then it will main charge so this time I’m going to Set the exposure on the Phantom’s much lower so we don’t get as much white out from the det cord explosions get more detail. Yeah Look up her skirt. I was looking into my finger Look up her skirt from here down. This is a special occasion yeah, because we’ve got a return of a very rare guest the slimmer guys its other Dancer its rival dads. This is a little bit of an awkward situation having both of us here at the same time You may not recognize down because in this video he has a shirt on finds Explosives in bare chest just doesn’t work out. So then this one here will be the edge we Start from that will go up the stairs. See this little symbol here That’s where we’re gonna pop the det cord in that little cradle Yeah, so it’s enough explosive force to initiate the shape charge which is gonna last its way through Frank. This is an absolute operation It’s just raw nerve record to watch your det cord on your head Basically, I mean it’s perfectly saying you can chew it and it wouldn’t do anything. I Have taste earlier. It’s called secondary explosive Fare to be second. Sorry, I think so. That’s the shot right there Quick it looks fake, isn’t it? It’s gonna be like a little disco happening in Most dangerous nightclub ever Do you think the the det cord because it was wrapped so tight around the head it all just went at once around the head Yes Sympathetic detonation. So yeah, one of the layers would have got the next one The shape charge beats the shockwave, yeah, it’s insane I Deliberately made this one much much darker because we’re sure and much much slower But we should actually see the shop tube travel almost a leisurely pace at this frame rate. Oh Here we go. It’s gone down the legs waiting come in. Any second. Oh, where are we? Oh, here we go. I think it’s just The step up in speed is so insane Whoo, because you see the shock tube going only 2,000 meters a second, but the det cord is then going at 7,000 It’s a huge step up and that shaped charge that looks like a damn rocket going off that’s getting about 10,000 meters a second and when you were describing the shape charge, I thought it would be more like a shotgun We’re just kind of blow all in one direction But it’s so narrow and so specific like you could you could shoot someone with it Yeah, the field you could shoot it right at someone and it might miss it’s like a neat it’s like an explosive needle Well, there’s a hand, oh was that good hand. Oh That’s a shame. She’s had a hell of a retirement by there looking what’s done to address the debt course just like Crisped it up d dressed. Look what the shape charged it to this guy it completely sawn him in half Oh, Totally honestly when I saw him in half here, I thought that this part had just come off Yes same but then I thought you’re connected. Actually, it’s still connect. This is just loose. Oh He’s just taking him in half is all the phone that caught fire Didn’t actually get the other one look didn’t get that one. It just completely blew his front out his front fell off his To get Doris his head to fall off by wrapping it in det cord and it I saw it from over there Pop up about 30 40 feet and then it landed One of her eye sockets on oh no. Oh it’s Gruesomes a splintered sever. You should keep that the head yeah Use it as like a I mean surely though if I try and take it home when they try and swab it, they’ll be like I Think there’s a small amount of explosives there. So you just say to TSA just like well, yeah it blew up blew off obviously You using this as an another opportunity to blow up some of our merch yeah, all right, oh It’s a woman blow it out. Oh dear. This is a nice t-shirt, right? This you’re kidding All right looks that was good what you think yes lovely so we’ve made what can only be described as a monstrosity or some sort of secret weapon Let me talk you through this We’ve got an avalanche er easy used to fire into avalanches into a snow story to force an avalanche So it’s not dangerous. Yeah that leads down into this huge fat tube, which reaches all the way down to the floor, which is filled full of ammonium nitrate fuel oil Granular they look like what you feel a beanbag with except they explode. That’s exactly what looks and then round behind it You’ve got to five pound boosters this is all connected with about six foot of det cord so it’s about 50 or more pounds of Explosive – we also put a third mannequin up the back. Yeah We took her back there just to see if what the effects were Compared to obviously this guy’s gonna get a victory and I think that one’s probably not gonna see much though. I’ll see you there I wonder how much would be left. All right, let’s get the hell out of it Trevor how this place used to look before we did that experiment. Oh It’s just like it’s been a hurricane Shot to hang onto the ground in the hole of Thoreau guys, that’s never have the first I hope so Oh well back there it looked like a new it was so bright initially you can see Anything like how would you expose for that initial explosion? You could do it but you’d have to you probably wouldn’t see anything. You just see nothing to start with. Oh That looks like the end of the world oh oh just like a sparks sparks and flashes from the or it’s usually the rock or maybe just fast-moving plastic fast enough where it’s actually igniting on him It honestly looks like that was fired from a fat man. It does it looks like And then once did you see the shockwave go up you see it moving across all this floor back here See he’s got up there and then it’s lifting up all of the dirt and now it’s imploding back down Camera hammer yet that might be one of the best and most well-defined shockwaves I’ve ever seen It looks like a pyroclastic flow from her from a volcano, it’s just water Yeah, and then through the window but bash the camera out I can’t think of any time that I would have seen any explosion that was that big that close I’ve certainly never seen anything like that Explosion camera shelter. I feel like they’ve never done an explosion this big here. I think no, that’s why you’re like they definitely know Hey get bigger It’s blowing it in a like cripple their front ways it was there and it shoved it ripped it like a tin can What is interesting is that it shocked mud so far, like look at our old barrel with a hole in look at where that was Glad to see that even here You would have an absolutely murdered by that so the 26:40, which was up on the hill is it also got caked in one? I went out there what how quickly the mud caked the the view of the camera there Oh But such a wide lens on it This is the left hand mannequin that was here it was previously about here. That was the one that wasn’t the closest Yeah, and he’s turned to paste. I honestly don’t know if we could show this is a bit graphic This lady was stood here About five six meters away. Yeah, she got picked up by the explosion but another four meters back The legs off both her arms are off It’s just shows the massive amount of difference between evisceration a couple bits left and then like, you know Most of it left. I can’t believe it blew in our safety this because he put the charge behind the water that’s the that’s a thing in in a OD you is called a disrupter you place explosive charges behind water and it basically just Messes up everything that’s in front of the water really quickly. So he’s placed the charge behind the water in the waters just gone straight into the camera shutter, and that’s what’s done that Lets try and find a piece of your slow mo guys shirt Pull that out. That’s great Look at that It’s the RoosterTeeth thing. …Erteeth Oh no it’s “Terteeth” “Terteeth” “Terteeth” Euh “Terteeth” Well Do you know what my least favorite part of every Slo Mo video’s? What’s that? Well part for me being hurt. Yeah Is cleaning up afterwards. But all we’ve left today is a smoking crater. What and there’s like pits of genes That’s chicken stuff H. There’s no plastic It’s just biodegradable G that might be one of the most mental videos we’ve ever made. It’s insane That was that’s a lot of explosives. Yeah, well Big thanks to Vision Research for setting this up and letting us use their phantoms an extremely dangerous Environment and thanks to the Colorado School of Mines filling us come and blow stuff up here. Hopefully you enjoyed that video Feel free to follow us on social media and stuff subscribe to the slow mo guys, and we got a second channel We’ll see you next time Feel like the next video should be really relaxing in comparison Yeah, I think we need something like and I just chill this was yes. This is a lot