Hello there!
I'm Gav.
I'm Dan.
We're the Slo Mo Guys. And today we're gonna use a
very fast camera to look at some
underwater explosions. We're gonna use these little
bangers m1000's, stick them in so they
float so they sit in the middle cause
they actually just rise to the surface otherwise
yeah we once tried this before but
with the old camera wasn't fast enough
yeah we were trying to film it at 2500 frames a
second. Today we're going to do 28,000
frames a second. That's should really open our
slow mo eyes into what's really
happening and maybe even if we're feeling
cheeky go little bit slower. Looking forward to this.
Looking forward to it. I'm a get a lighter, alright?
Don't try this at home, either .
Now, the explosive creates a little sphere so I'm
going to focus on where the front of
that sphere is going to be, and not on
the banger itself so at the beginning it'll
probably be out of focus but it'll come into focus hopefully.
(Explosion sound)
Hehe!
That's cool!
Little funk, smells good, ready?
Woah! That's actually wicked! That's very cool! Oh! It's like that the
light comes back as it comes in. Like all
the explosive mass is being
recompressed into heat.
So cool! Okay, I'm going to expose it really dark.
So you can see more detail in the explosion.
That first one was pretty bright.
(Explosion sound)
Kinda close with your hand
there... nah, it's fine, done this before. It's actually quite
long way a fuse inside this is. Yeah once
it disappears in this is where your
hands on it when the fuse hit the banger
That's fine. Look at that, that one little moment in time
is so cool that last for such a small
amount of time. It's just a banger. One lil' banger.
Aw, man. There was a frame and that looked like a mushroom cloud.
I was gonna say it looked like a nuke in the middle of there.
we are now at 512 x 320 pixels which is
shockingly bad. Um, sort of lower than
standard def bad but the upside is
we're at a hundred and twenty thousand frames a second. So slight issue
with the filming in high-speed and
having to stop...
ATCHOO!
You all right?
Bloody Hell!
only you in high-speed so everything's
dark but I'm also stopping down the lens
so much that, uh. This is what I can see on
the screen if you're struggling to see
it's absolutely nothing
so this will be trial and error as in
the exact framing
no idea if we got that. The thing is that
the refresh rate on that
screen is so bad that I didn't see anything
on it so I have no idea whether we got it yet
Struggling to find it. It's only a split second...
Wait. Is that the amount of footage you've
selected? Whoa! We got it! Awesome, that's perfectly in frame!
*Dramatic Music*
*BOOF*
Very cool. That was wicked. Very very cool so it
seems like we're never gonna be able to
see the entire explosion in full detail.
We are going to be able to see
either just the very beginning or not
the beginning and some of the rest of it.
Yeah, so we've taken different
exposures and we've got like different
stages of the explosion (yeah) correctly
exposed
ok so I'm actually quite interested to
see what the surface of the water does
as the explosion happens so we're going
to position one a few inches under and
do it sort of more normal frame rate
What's normal frame rate? (haha, 28,000) That's *not* normal frame rate.
On this camera it is! :D
nice
very nice
*Dramatic Music*
*BOOF*
*Frame rate change*
*Frame rate change noise*
Well the tank survives another video
I don't know what we're going to have to do to get rid of this thing. It's impressive.
yeah although the ink one wasn't really pushing it to its limits. Yeah. right, right, right.
Yeah. That was crazy
I love seeing those cavitation balls I'm not
sure if it is just a vacuum or whether
the reaction from the banger actually puts
air into there but it- it closes in again
and sort of reignites whatever is in there.
It is cool it's also interesting how
because the fuse contains its own
source of oxygen
even if it's underwater you don't need
to worry about it. It will still go. It's so cool.
I love doing stuff at those ridiculous frame rates
Well, hopefully you enjoyed that video. I found that one fascinating!
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so hopefully we'll see you in the next video!
I'm so sweaty.
Care for a dip?
*Disgusted*
Aww, why does it smell bad?!
It always smells like --?
Ugh, I got my sleeve wet in it!
Hahahaha
Watch your watch
Ah yeah
Bet that would have looked quite cool in slo-mo.
now you tell me
I'll fill it back up just to do that again