we’ll a vacuum chamber float on water or
sink and what will happen when you crack
the vacuum chamber underwater
well max mint I think we’ve come up with
a good way to make some small disposable
[Music]
rather than using a full-size vacuum
chamber and putting it into say a large
tub of water or swimming pool we’re
gonna see if we can’t make a very small
vacuum container just using a soda
bottle here’s the basic idea we’re going
to empty out our soda bottle drill a
small hole into the lid and add a rubber
stopper we’ll put the whole bottle and
stopper inside of a vacuum chamber and
suck all the air out the stopper should
prevent any air rushing back into our
bottle at which point we can see how
well it floats on water compared to a
bottle full of air the first step in
turning our little soda bottle here into
a vacuum chamber is of course going to
[Applause]
one more thing that I do want to do just
to see if we’re getting our vacuum is
I’m gonna drop a marshmallow down into
this bottle so it won’t have a complete
vacuum it’ll be a vacuum with a
marshmallow in it but I think that will
really help us see whether or not we’re
getting the effect we want this piece of
tape it’s gonna be pretty loose you
can’t really see it but there should be
just enough space for air to escape out
of the bottle all right time to fire
this up give it a test let’s take our
entire bottle with the modified lid
place it inside our vacuum chamber and
let’s drop one more marshmallow down
into that vacuum chamber so we can see
the difference between the two pull out
all the air and see what happens I spy
two expanding marshmallows just what I
was hoping to see I think we’ve got a
pretty good vacuum now let’s see what
happens if we add air back in that
marshmallow doesn’t look as squished
down as this one did so I think we did
manage to keep a vacuum in there in fact
I’m gonna pull up on the rubber and see
if the marshmallow changes oh definitely
so we did have a vacuum in there and
then I broke the seal and now we don’t
have a vacuum in there it’s just full of
air and a marshmallow Jim so we
confirmed that it does hold a vacuum or
at least lower pressure it might not be
a complete vacuum but it’s much closer
than it is now you can see how squish
that marshmallow got poor guy same thing
one more time this time though we just
aren’t going to break the seal as long
I’m gonna put another layer of tape over
it to really hold down the rubber seal
you know I am providing lateral
stabilization trying to hold the bottle
from falling over but I am not holding
it up at all back even if I push it down
under the water you can see that it pops
back up quickly so confirmed a vacuum
chamber does float on water well I
didn’t actually think that a bottle with
a vacuum in it was going to sink when we
think about a bottle floating we think
about the air inside of it being what
keeps it float what really makes the
difference is whether the total density
of a bottle and whatever it contains is
higher or lower than the total density
of the water that it displaces the
bottle full of air weighs less than the
same volume of water a bottle full of
vacuum actually weighs even less than
that we don’t really think of air as
having much weight but it does have mass
it’s mostly made of nitrogen oxygen and
a little bit of carbon dioxide and some
other trace elements that air while very
lightweight to us does have some mass to
it however we were able to test and
confirm that a bottle with a vacuum in
it does float on water and now it’s time
to move on to the second part of the
common request which is to see what
happens if you break a vacuum chamber
underwater well once again I think they
meanwhile it has a vacuum so let’s pull
all the air out of our bottle once again
and then try and crack it underwater
pour marshmallow friend has now been
inflated and deflated and re-inflated
and
oh that’s so cool
[Music]
yeah water is just spring in there
superfast yeah it’s kind of cool because
those bubbles are vacuum that are just
surrounded by water and as the water
fills in all the spaces they dissipating
not all of them are vacuum though
because some of them stay and are
starting to float up toward the surface
maximum thank you for your suggestions
this has been great to experiment with
in fact that looked so cool that I think
we’re gonna have to scale that up and
maybe do one of our full-size vacuum
jars just get all the water on it find a
via swimming pool or something at least
a really big container of water and
something where I can get a lot more
momentum and just whack it with a hammer
get it to really crack open all once
maybe do that a few different times I
don’t know this is really cool check
your youtube inbox we are sending you 25
bucks and remember if you’ve got a cool
idea of something you want to see us do
let us know down in the comments if we
use your idea we’ll send you 25 bucks
hey guys thanks for watching if you’re
not a subscriber yet just hit the bottom
to get in the club if you missed our
last video or want to watch it again
just click up here at the top click down
there if you want to see what the
internet thinks that you should watch
next that’s it for now have fun be safe and see you tomorrow
sink and what will happen when you crack
the vacuum chamber underwater
well max mint I think we’ve come up with
a good way to make some small disposable
[Music]
rather than using a full-size vacuum
chamber and putting it into say a large
tub of water or swimming pool we’re
gonna see if we can’t make a very small
vacuum container just using a soda
bottle here’s the basic idea we’re going
to empty out our soda bottle drill a
small hole into the lid and add a rubber
stopper we’ll put the whole bottle and
stopper inside of a vacuum chamber and
suck all the air out the stopper should
prevent any air rushing back into our
bottle at which point we can see how
well it floats on water compared to a
bottle full of air the first step in
turning our little soda bottle here into
a vacuum chamber is of course going to
[Applause]
one more thing that I do want to do just
to see if we’re getting our vacuum is
I’m gonna drop a marshmallow down into
this bottle so it won’t have a complete
vacuum it’ll be a vacuum with a
marshmallow in it but I think that will
really help us see whether or not we’re
getting the effect we want this piece of
tape it’s gonna be pretty loose you
can’t really see it but there should be
just enough space for air to escape out
of the bottle all right time to fire
this up give it a test let’s take our
entire bottle with the modified lid
place it inside our vacuum chamber and
let’s drop one more marshmallow down
into that vacuum chamber so we can see
the difference between the two pull out
all the air and see what happens I spy
two expanding marshmallows just what I
was hoping to see I think we’ve got a
pretty good vacuum now let’s see what
happens if we add air back in that
marshmallow doesn’t look as squished
down as this one did so I think we did
manage to keep a vacuum in there in fact
I’m gonna pull up on the rubber and see
if the marshmallow changes oh definitely
so we did have a vacuum in there and
then I broke the seal and now we don’t
have a vacuum in there it’s just full of
air and a marshmallow Jim so we
confirmed that it does hold a vacuum or
at least lower pressure it might not be
a complete vacuum but it’s much closer
than it is now you can see how squish
that marshmallow got poor guy same thing
one more time this time though we just
aren’t going to break the seal as long
I’m gonna put another layer of tape over
it to really hold down the rubber seal
you know I am providing lateral
stabilization trying to hold the bottle
from falling over but I am not holding
it up at all back even if I push it down
under the water you can see that it pops
back up quickly so confirmed a vacuum
chamber does float on water well I
didn’t actually think that a bottle with
a vacuum in it was going to sink when we
think about a bottle floating we think
about the air inside of it being what
keeps it float what really makes the
difference is whether the total density
of a bottle and whatever it contains is
higher or lower than the total density
of the water that it displaces the
bottle full of air weighs less than the
same volume of water a bottle full of
vacuum actually weighs even less than
that we don’t really think of air as
having much weight but it does have mass
it’s mostly made of nitrogen oxygen and
a little bit of carbon dioxide and some
other trace elements that air while very
lightweight to us does have some mass to
it however we were able to test and
confirm that a bottle with a vacuum in
it does float on water and now it’s time
to move on to the second part of the
common request which is to see what
happens if you break a vacuum chamber
underwater well once again I think they
meanwhile it has a vacuum so let’s pull
all the air out of our bottle once again
and then try and crack it underwater
pour marshmallow friend has now been
inflated and deflated and re-inflated
and
oh that’s so cool
[Music]
yeah water is just spring in there
superfast yeah it’s kind of cool because
those bubbles are vacuum that are just
surrounded by water and as the water
fills in all the spaces they dissipating
not all of them are vacuum though
because some of them stay and are
starting to float up toward the surface
maximum thank you for your suggestions
this has been great to experiment with
in fact that looked so cool that I think
we’re gonna have to scale that up and
maybe do one of our full-size vacuum
jars just get all the water on it find a
via swimming pool or something at least
a really big container of water and
something where I can get a lot more
momentum and just whack it with a hammer
get it to really crack open all once
maybe do that a few different times I
don’t know this is really cool check
your youtube inbox we are sending you 25
bucks and remember if you’ve got a cool
idea of something you want to see us do
let us know down in the comments if we
use your idea we’ll send you 25 bucks
hey guys thanks for watching if you’re
not a subscriber yet just hit the bottom
to get in the club if you missed our
last video or want to watch it again
just click up here at the top click down
there if you want to see what the
internet thinks that you should watch
next that’s it for now have fun be safe and see you tomorrow
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