[Captions by Judy V. at Y Translator] In today's video, we are revisiting experiment
where we tried breaking a vacuum chamber underwater.
We're going to do that again, but with a few twists varieties
that should make it even cooler.
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Not too long ago, we had an experiment where we learned
what would happen if you had a vacuum inside a glass bottle,
and then shattered that bottle underwater.
I thought that experiment looked really cool,
and I said that I wanted to revisit it,
maybe scaling it up.
There are some varieties that I really want to try,
and this is because I thought that looks so cool
that I needed more footage of it,
and so we now have a flat walled aquarium,
and I've got eight different bottles,
and we're going to try a few different things.
We're going to put some stuff in the bottles
before we pull a vacuum,
then close them off,
and then break them underwater,
and see what happens.
Here's the basic idea.
A small piece of rubber will work as a stopper over a glass bottle.
We'll pull all of the air out of the bottle in a vacuum chamber.
We'll fill some of our bottles with a variety of different materials,
and see how they look when they break underwater,
especially in slow motion.
As a sort of comparison shot, we'll start with a plain empty bottle
with a vacuum inside,
and see how that looks.
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Similar to last time,
we are going to start with one miniature marshmallows in our jar,
and that's just to give us a visual representation
of whether or not we've got a good vacuum pulled in the glass.
As you probably know, if there is a good vacuum,
that marshmallow will be puffed up quite a bit.
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The marshmallow seems to have stuck to the bottle
from a little bit of residual moisture,
but it shouldn't affect anything.
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3, 2, 1.
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That's interesting.
It actually cracked the first time.
The glass was damaged but holding itself together.
That's so weird.
Like you can feel everything gets sucked in a little bit,
and it sounds just like...
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We tried putting one marshmallow in the bottle.
Now, let's see what happens if we fill it quite a bit.
The marshmallows will expand in the vacuum.
So hopefully, they'll kind of fill the whole bottle before it shatters.
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Some of the marshmallows down near the bottom got big fast
enough that they sort of plugged everything up,
so the lower marshmallows don't have any space to expand.
You can see how big the marshmallows at the top are.
Okay, we've got a jar of partially inflated marshmallows,
because they inflated so much that they started deflating again.
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It's cool to see this one in slow mo
because as I saw the result,
I wasn't quite sure how all of the marshmallows
ended up in that one corner.
Next up, we're going to try some neon blue food coloring.
We're just pour all of it into the bottle,
and we'll see what happens to it when we pull a vacuum.
But it's not going to completely turn into gas,
so we should still have really low pressure in there.
Let's find out.
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The super low pressure is causing our food coloring to
start bubbling a little bit.
No, now, it's causing it to bubble quite a bit.
Bubbling and splattering all over though.
It's kind of neat.
All right, I think that means we're at a good vacuum.
Let's pressure back in.
Maximum effect.
I'm going to try and coat this whole bottle in our food coloring.
Just looks like blue glass now.
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That's awesome!
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That was really impressive watching how fast and far that blue coloring spread.
It was almost instant that the whole tank was blue.
Looking at it at super high speed, of course, I can see
that it wasn't actually instant,
but it felt that way when I was doing it.
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I really liked how the bottle with the food coloring in it went,
so now, I want to try using this super neon green ink.
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That's delightful.
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It sinks instead of floating.
Is not as much floating.
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Not many things that I've put in a vacuum chamber
have expanded more than whipped cream.
So now we're going to try putting a little bit of that
in one of the bottles, see what it does.
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I'm a healthy person.
Whipping cream in a vacuum bottle.
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I actually want to stop it before it goes too far
because we have tested, and you can unwhip cream
by pulling too much of a vacuum.
So, we're just going to leave it nice and expanded.
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What might happen if we have something in the bottle
that reacts with the water itself?
We're going to try using a little bit of baking soda,
and a little bit of citric acid.
When they're both dry, they aren't going to react,
but as soon as water hits them, we should have quite a good fizz.
1, 2, 3.
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Because we're watching it at such slow frame rate,
it's fun to see the glass shatters,
the water flies into the vacuum,
fills it up,
the bottom starts dropping off,
and then, kind of right when you think like,
"Oh, it's over,"
that's when it starts reacting with the chemicals inside the glass,
and you get a second burst of fizziness.
Now, in this bottle, we've got five different colors of sand,
layered on top of one another.
The sand of course is just a powder,
and isn't going to react in the vacuum chamber,
but I'm really hoping we have like a cool spray.
Like when the water goes rushing into that depressurized bottle,
it all just like fly in there,
and they'll have colors going everywhere.
3, 2, 1.
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That is some really fun footage.
I love watching those in slow motion.
I like we got several different results.
We had some of them where the bottle got cracked all the way through.
We had somewhere just cracked part of the way,
and we just had these fun explosions.
Water just flying around.
Colors, sand, whipped cream.
Overall, I really enjoy doing this.
If there's anything you would like to see us try inside a vacuum bottle,
breaking it underwater, let us know down in the comments.
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