Hello, I'm Gav I'm Dan we're the Slow Mo Guys
and today
we have a
Sprinkler little sprinkly boy a little sprinkly boy that you'd probably find on the ceiling of a public place in there or in movies
Or in a movie. Yeah
Most people have seen one of these go off probably in a movie or in real life if you've been slightly unlucky
But not everyone knows exactly how they work. So with the use of these
bad boys this one
And this one will show exactly how they work in slow-mo. These are not light. Yes. I'll put them down there. Yes
All right, then. How do these work then? Essentially? What happens is you got a fire in a room?
It's all burning hot all the heat rises to the ceiling where your sprinkly boys are. What happens is this little
Glossy juicy amp you'll hear the juice in the ampule expands due to the heat and that smashes the glass
Which then lets the water flow through and hopefully douse the fire this particular one we've got here
will hopefully explode at about 68 degrees C or
155
American things yeah, yeah
Fahrenheit, thank you
We'll start up here at a thousand frames a second
In 4k before going a little bit faster to get that glass break. You got goggles. I have got goggles. Yeah, okay
I'll put them on probably sticking one. Yeah, okay. We don't have a fire in the garden. So I'm just gonna use this blurry
Flippn' eggs, ah the gas that's quite shocking
It went like POOF
Quick it made like a right popping sound good because
You see the whole plateful yeah, I just like it was a good gun going
The way the hose is set up and the pipe is like
The thing is because it's so what type like there was a little bit in there in the trim so it like what
Okay now we're good okay now we're going for a cheeky top-down
Sort of like ceiling view. Yeah. Yeah. Okay say when I'm in position of the unfortunate fool in the fire
The only difficult years I have this aiming the blowtorch away from the camera. I
Don't light that. Okay
Say when I might aim down today, okay
You ready? Yep
Oh no
All right
well
It's very shocking every time it is every time I can't help but like make a noise. I tried not to that time
Jokes around that's so much air in there. Yeah
I feel like if you installed sprinklers the fire would be fans severely before right. It's not my job
Okay, look that's a really good one. You can see clearly that we they're like fans of the
Sprinkler, they're causing that pattern of water to go out everywhere
Yeah, it's just the metal shape that causes such a widespread
It comes out like in a nice torrent and then it pees out everywhere to the sides
It's good design don't realize it's not just the glass ampule that goes this is one that hasn't been fired
And this one that has when you look down this here
You can see there's a big hole where the glass sample was on this one. There's like a whole metal surface that is there
so I think that ampule actually like holds the metal surface in and then when the ampule breaks they're like
metal disc drops and allows the water through
Okay for the next shot we need a much higher framerate
so we borrowed this bad boy from Destin the v25 11 and
If you've seen this camera before you'll know that has very loud fans. So
Sorry about that
Okay, we're now looking around this area
28500 frames a second get a bag the camera because it could get a splash Oh
It gushes out there straight after the red goes and the red goes flying
Yeah, you can see the amount of force that blast is that thing down?
Yeah, it's like a torrent of water after the glass ampule bursts
Yeah, it's like it pushes the little plate down and then it's like a full-on torrent comes down. The the turret is much wider
So it's much thicker stream that I imagined. I thought would be much much finer stream, but it's like
so did I I mean we're learning about how these work and
I can show you the plate that sits there that the glass anchor breaks them that's loose just completely falls away and allows the loads
of work, very
All right now a much lower resolution we're a hundred and three thousand frames a second
Gets me every time
Yeah, it's like the pressure bursted but we know it's the the liquid leaving
The regular crew comes out like sideways and on the torrent just goes downwards. They're completely different. You see the red
It's just come out words completely later. Is that powerful of birth?
Yeah a little bit of air it's mystifying
Yeah
I'm telling the steady guitar. It really kicks up. It has a lot of recoil. Oh, yeah
Hard to see what I'm moving that slowly
That's who's been eating my damn hammock I think it is he stood next to the evidence as well
Return to the scene of the crime. Have you?
Look at what you've done
It's pretty cute though, I forgive him make an episode of planet Earth
All Right, see ya
after feasting on the hand of the possibly
Leaving it in tatters
That was $79 down the tree I
Think he's left some poo in the garden as well
It's not often that I actually get to use a blowtorch and that causes me to get wet. That's true
Yeah, also little red red speckles all over your face a lot. Really? Yeah
I think you got some of the glycerine I think that's good. It's not only bad not ideal. I think it's like not lead-free
I like video. So I like it where you sort of learn it
You can visualize exactly how it works
And now I'll never look at them the same way
I can put on the smug voice if anyone tries to ask me
I'd be like nah, I think you'll find it's the ampule of glycerine causes. The explosion is a great word
It's underused amp pure and now because you've experienced five
Explosions of glass ampules you'll be less shocked if they go off for real. I don't think it will be
No, you Wayne. I definitely on today's video
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