i must say, the effects of the bubbles in the water remind me of gravitational effects, for instance the first one with the big bubble and small bubble, they seemed to be moving about in a way very indicative of the way stellar masses move through space, collisions and absorptions as well. and the effervescent tablet's bubbles remind me of the way early planets formed, with bigger bubbles absorbing smaller bubbles to grow larger. was quite interesting
people need to appreciate the fact that in space, things react a little different than down here, it's way more different when things are happening in near zero gravity... also, astronauts can spend time having fun, too.
Two things: 1. Water at the molecular level is polar; because of the way it is shaped, it has tiny electric charges at either end. At the surfaace of the water, because there's an overall neutral charge on either side, the molecules align to form a "skin" of sorts. 2. Air pressure; air surrounding the water pushes it into a spherical shape and that is the shape with the highest volume:surface area ratio and therefore the lowst overall energy.
people have questioned the reason for the station for quite a while. for me as an engineer its experiments like these, which could never be carried out on earth that makes the space station worth its weight in gold. many lay people would wonder what the reason for such an experiment was but looking at this vid will explain to me how fuel in a fuel tank will behave under forces and how said forces would be distributed.watching this vid will help me to design better tanks for jets!
It's called a science experiment. Here on earth with gravity bubbles interact different. To be able to find out how bubbles and their surface tensions react without any outside forces makes the experiment more pure and the results can be used in other calculations.
Haha, lost it too! "Bubbles ... and then the bubbles... and bubbles... bubble wars" But actually pretty cool that the two biggest bubbles, polarized like that.
Amazing! I finally saw this old experiment. Pay close attention, for this a "scale model" of what would happen to earth if we get hit by a large rock. Earth would be the bubble of water. NOTE: The earth is very fragile indeed.
A sphere of water exists in space where there is no gravity, this is why there is a wire in the video, it is there to keep the water sphere in place for experiment purposes.
it's because of a property that water has called "surface tension", basically water wants to take whatever shape has the lowest surface area, and in a vacuum that's a sphere.
i'm confused on what this means. i understand what's happening, but what is the point of doing these experiments? if someone could tell me...i'd be much appreciative.
It's a sphere because it's IN SPACE. Gravity isn't acting on it. The only way you can get in on Earth is observing it during free fall, when it reaches terminal velocity.
That's the coolest thing I have seen in a long time! I never considered that an air bubble would be contained in a sphere of water in microgravity. Seems obvious now... I kinda thought surface tension would force the bubble out. It's obvious now why it doesn't!
@daleetMeh EXACTLY. THAT'S part of why his job appeals to me, aside from the fact that what he is doing looks exactly like what a kid will do under those circumstances.
they did those experiment in the international space station. I think the only way to produce those water sphere on earth is to use laser or sound resonnance to maintain them in mid air. So you cant do this at home
Which is why water heated in a container to a temperature where it has a much higher vapor pressure, will show less surface tension? The surface tension is the result of the difference between the liquid's would-be vapor pressure and the pressure of the gas surrounding it?
Water clings to things to like glass (and water) because of the H-bonds between the water and other substance. Because of this water sticks to itself and forms the sphere. This is also due to the ~0g environment.
@xgotarox That quotation was a generalization and it was incorrect. Not everything is in free-fall: the gas in a stable star is not in f-f unless fusion turns off, in which case it goes into f-f and we are not in f-f as we sit/stand/run(well, kinda) etc. What I was referring to in that quotation was the larger objects in the macroscopic universe: stars, planets, etc.
@xgotarox Also, I think that if you're at rest relative to a center of gravity, then you're not in free fall. That's why it's called free fall, right? An object is /free/ to /fall/ towards the center of gravity. If you fall off your chair, you're in free fall (for a /very/ short time). If you fall off your bed, you're also in free fall. If you jump up, you're in free fall when you come down. If you blast off in a space ship, you're not in free fall.
"if you were to spin it, would it pan out flat and then become spherical again as it slowed?" I'd say so....cool idea! You can see the same thing right here on earth with water droplets on a surface, poke em with your finger a little and they'll go back to their dome shape.
you need to be able to see ahead to envision the benefits. There may not be immediate short-term benefits from many small scientific researches, but they form the foundation of many future discoveries and inventions.
your a legend!!! thank you so very much for the effort you put into these answers they were very helpfull i hadent comprehended the carbonisation in a vacuum part expert enough for me!
well, its not really surface tension, its the cohesive properties of the water molecules that do this. cohesion is also responsible for surface tension.
You build a space shuttle, launch into earth's orbit, then you carefully dispense the water into your testing environment, take a straw and slowly introduce some air into the interior of the water ball, etc., etc.
@amsterdamob The first one is what would happen to the earth if it got hit by a really big asteroid or comet, and if you want to travel and colonize space, its important to know how things will work in space.
@xgotarox There is a single object that they are falling towards: the Earth. In my example of skydiving, you don't have enough horizontal speed (tangential speed?) to go into orbit around the Earth, so you fall straight to it. However, the space station is travelling fast enough that instead of falling into the Earth, you're falling around the Earth which is indefinite free-fall (ignoring the fact that your orbit decays, of course- the decay would just make it definite free-fall)
Note; whilst your enthusiasm for interplanetary (well, almost) travel is commendable, none of the effects seen here are observable on the Moon, or any other object with an appreciable surface gravity.
Hmm.. well I certainly wish they could have done that. It would have been a difficult trick to manage, but... Yeah, so long as the rotation speed wasn't too fast I think it'd flatten out, kinda like taking a beach ball and squeezing it from the top and bottom. A quick google search suggests the name of the shape it would take is "oblate spheroid". And yes, when it stops it should go back to being spherical.
If you froze a sphere of water in low gravity then set it rotating, In theory I would expect it to spin faster as it melted; yes or no? ( Not taking into account the friction of the air surrounding the sphere.)
Close enough; the International Space Station (ISS), in low orbit. You only get free spheres of water-in-air like that in microgravity (or less, naturally).
that guy should try that same experiment with molten glass or some kind of alloy that melts slightly above room temperature... and toss a little sand art in it~
The station rotates in an orbit around the Earth. The centrifugal forces and the gravitational forces cancel each other inside the station to give net 0 body force. In other words, the station follows a geodesic in the curved space-time around the earth.
retnuh66, I have to admit that in theory you're right. But for all intents and purposes this is zero g. An orbiter is probably as close as you could get. Plus any outside gravitational forces would affect the orbiter and anything in it equally so the frame of reference (in this case, the orbiter) would stay the same. But yeah, there is a minuscule gravitational force between all matter so you have a valid point :-)
Um.... I don't know what to say to that. The first problem is that if you took a 2 liter of Coke (diet or otherwise) and opened it up in space (in other words, in a vacuum), all the CO2 would fizz out even without mentos. You'd need a mechanism to add the mentos to the soda and then expose it to vacuum. From there.. I can't adequately visualize the long term effects. I think you start off with an expanding cloud (of ice particles).
i saw this awhile ago and i found it very interesting. but now i think ive realized something much deeper to all this. since this is done in space, and most of our earth is covered in water.. and the rock in its core is liquid.. and its floating through space. it would behave in a similar way. if we got struck by an astroid.. expect the back side to blow out, and for earth quakes to jiggle around back and forth. and the bubbles would be different densitys of rock. that can pop/collapse etc.
I return to this video roughly once per year. I absolutely love the commentary describing what is happening in this video.
That was possibly the coolest thing about water that I have seen in my life so far.
i must say, the effects of the bubbles in the water remind me of gravitational effects, for instance the first one with the big bubble and small bubble, they seemed to be moving about in a way very indicative of the way stellar masses move through space, collisions and absorptions as well. and the effervescent tablet's bubbles remind me of the way early planets formed, with bigger bubbles absorbing smaller bubbles to grow larger. was quite interesting
people need to appreciate the fact that in space, things react a little different than down here, it's way more different when things are happening in near zero gravity... also, astronauts can spend time having fun, too.
I think that if NASA started putting more cool stuff like this on RUclips they would completely revive interest in the space program.
Two things:
1. Water at the molecular level is polar; because of the way it is shaped, it has tiny electric charges at either end. At the surfaace of the water, because there's an overall neutral charge on either side, the molecules align to form a "skin" of sorts.
2. Air pressure; air surrounding the water pushes it into a spherical shape and that is the shape with the highest volume:surface area ratio and therefore the lowst overall energy.
That's the coolest spherical harmonics demo I have seen
people have questioned the reason for the station for quite a while. for me as an engineer its experiments like these, which could never be carried out on earth that makes the space station worth its weight in gold. many lay people would wonder what the reason for such an experiment was but looking at this vid will explain to me how fuel in a fuel tank will behave under forces and how said forces would be distributed.watching this vid will help me to design better tanks for jets!
One of the coolest things I have EVER seen.
Awesome. As cool as it all was, I especially liked the Aspirin in the sphere.
It's called a science experiment. Here on earth with gravity bubbles interact different. To be able to find out how bubbles and their surface tensions react without any outside forces makes the experiment more pure and the results can be used in other calculations.
2:03, I like how the water reaches up and takes the tablet from him. Science is sweet.
to put it plainly this is FREAKIN AWESOME!!!
I love his descriptions... I have to remember them when Im talking to my mechanic...
Haha, lost it too!
"Bubbles ... and then the bubbles... and bubbles... bubble wars"
But actually pretty cool that the two biggest bubbles, polarized like that.
Amazing! I finally saw this old experiment. Pay close attention, for this a "scale model" of what would happen to earth if we get hit by a large rock. Earth would be the bubble of water. NOTE: The earth is very fragile indeed.
Killer video, thoughtful experiment. Just plain awesome.
A sphere of water exists in space where there is no gravity, this is why there is a wire in the video, it is there to keep the water sphere in place for experiment purposes.
This is freaky and un-natural.
LOVE it.
it's because of a property that water has called "surface tension", basically water wants to take whatever shape has the lowest surface area, and in a vacuum that's a sphere.
actually its the surface tension of the water that makes such nice spheres. If the tension wasn't as high as it is, it would be more blobs.
Wiedza warta poznania rozdawania + podaj dalej Polecam.
02:35 - Check out the vortex that forms when those two bipolar bubbles merge.
they have so much they have to work on they never get bored ;)
Very cool demonstration!
i'm confused on what this means. i understand what's happening, but what is the point of doing these experiments? if someone could tell me...i'd be much appreciative.
this would simply be UTTERLY AWESOME if it was recorded with the best slow motion camera around!
I just Love this!!!! Thank you so much for posting!!!! Peace!
I love the "water droplets in a bubble in a sphere".
It states in the opening title that this experiment was conducted on the ISS (International Space Station). Pay attention.
How do you create and maintain the spheres? That is superb.
That is sooo cool, I'd love to do that kind of research some day.
very nice, please bring more of this.
It's a sphere because it's IN SPACE. Gravity isn't acting on it. The only way you can get in on Earth is observing it during free fall, when it reaches terminal velocity.
That's the coolest thing I have seen in a long time! I never considered that an air bubble would be contained in a sphere of water in microgravity. Seems obvious now... I kinda thought surface tension would force the bubble out. It's obvious now why it doesn't!
"well it's pretty simple u need some water and you need to be in space"
ahhahha, pretty cooOOOl!!!
@daleetMeh EXACTLY. THAT'S part of why his job appeals to me, aside from the fact that what he is doing looks exactly like what a kid will do under those circumstances.
very interesting. is this experament being preformed in space.
In this world, there are a great many things to be curious about, and there are even more in space.
if you were to spin it, would it pan out flat and then become spherical again as it slowed?
MGM and NASA presents:
2008 - Full scale bubblewar
with narration by an enthusiasistic voice
gotta love the vocabulary! Great video.
they did those experiment in the international space station.
I think the only way to produce those water sphere on earth is to use laser or sound resonnance to maintain them in mid air.
So you cant do this at home
Oh my fucking god.
That was worth every penny of the space program. Just, wow that is fucking amazing shit.
That was delightful.
This guy definitely knows his science.
Bubble, bubble... toilet trouble!
Very nice zero-G demonstration.
Which is why water heated in a container to a temperature where it has a much higher vapor pressure, will show less surface tension? The surface tension is the result of the difference between the liquid's would-be vapor pressure and the pressure of the gas surrounding it?
this is way cool, big up man
Water clings to things to like glass (and water) because of the H-bonds between the water and other substance. Because of this water sticks to itself and forms the sphere. This is also due to the ~0g environment.
in the description it says in the International Space Station, they're in space, no gravity
@xgotarox That quotation was a generalization and it was incorrect. Not everything is in free-fall: the gas in a stable star is not in f-f unless fusion turns off, in which case it goes into f-f and we are not in f-f as we sit/stand/run(well, kinda) etc. What I was referring to in that quotation was the larger objects in the macroscopic universe: stars, planets, etc.
el experimento se está realizando en espacio exterior en condiciones de gravidad cero.
en el experimento final, la reaccion es agua y CaCO3
This is like the best thing ever.
^.^awesome video did they make that sphere in the universe or is it posible to trick out the gravity on earth?
@xgotarox Also, I think that if you're at rest relative to a center of gravity, then you're not in free fall. That's why it's called free fall, right? An object is /free/ to /fall/ towards the center of gravity. If you fall off your chair, you're in free fall (for a /very/ short time). If you fall off your bed, you're also in free fall. If you jump up, you're in free fall when you come down. If you blast off in a space ship, you're not in free fall.
"if you were to spin it, would it pan out flat and then become spherical again as it slowed?"
I'd say so....cool idea!
You can see the same thing right here on earth with water droplets on a surface, poke em with your finger a little and they'll go back to their dome shape.
hugh? is it in space? or how do they create this bubble of water in free sphere?
I thought this was one of the most interesting things ive seen all day. Granted it was slightly random,,,, but i like that
Good vid
you need to be able to see ahead to envision the benefits. There may not be immediate short-term benefits from many small scientific researches, but they form the foundation of many future discoveries and inventions.
your a legend!!! thank you so very much for the effort you put into these answers they were very helpfull
i hadent comprehended the carbonisation in a vacuum part
expert enough for me!
well, its not really surface tension, its the cohesive properties of the water molecules that do this. cohesion is also responsible for surface tension.
EAT THE BUBBLE! That's cool. Nothing like Alka-Seltzer bubbles in space.
You build a space shuttle, launch into earth's orbit, then you carefully dispense the water into your testing environment, take a straw and slowly introduce some air into the interior of the water ball, etc., etc.
This is excellent! Would love to see more space videos on You Tube. Note: I wouldn't try Coke and Mentos on the Space Station. :)
I found it quite humorous that after entirely speaking in scientific terminology, he begins talking about "bubbles eating other bubbles."
how did you get the free sphere of water?
the video description says 'Waves in a Large Free Sphere of Water - An experiment at the International Space Station'
@amsterdamob
The first one is what would happen to the earth if it got hit by a really big asteroid or comet, and if you want to travel and colonize space, its important to know how things will work in space.
WOW, probably cost them millions in research to find out that water has waves, bubbles and even a bubble war with cannibal bubbles.
lol when he was explaining the acid tablet it sounded funny. "bubble war" haha
@xgotarox There is a single object that they are falling towards: the Earth. In my example of skydiving, you don't have enough horizontal speed (tangential speed?) to go into orbit around the Earth, so you fall straight to it. However, the space station is travelling fast enough that instead of falling into the Earth, you're falling around the Earth which is indefinite free-fall (ignoring the fact that your orbit decays, of course- the decay would just make it definite free-fall)
So yeah, that zero-gravity water looks really trippy.
Note; whilst your enthusiasm for interplanetary (well, almost) travel is commendable, none of the effects seen here are observable on the Moon, or any other object with an appreciable surface gravity.
how do you make the water float???
Hmm.. well I certainly wish they could have done that. It would have been a difficult trick to manage, but... Yeah, so long as the rotation speed wasn't too fast I think it'd flatten out, kinda like taking a beach ball and squeezing it from the top and bottom. A quick google search suggests the name of the shape it would take is "oblate spheroid". And yes, when it stops it should go back to being spherical.
If you froze a sphere of water in low gravity then set it rotating, In theory I would expect it to spin faster as it melted; yes or no? ( Not taking into account the friction of the air surrounding the sphere.)
how do they get it in like a weightless looking sphere like that??
How is this done?
i need to make this.
ridiculously cool vid
Close enough; the International Space Station (ISS), in low orbit.
You only get free spheres of water-in-air like that in microgravity (or less, naturally).
You are a genius!
Haha he sounds so excited over his bubbles.. Anyway, great vid. How's the sphere done anyway? :S Looks like zero-gravity, but it's not, is it?
how do they make the water stay in a sphere?
that guy should try that same experiment with molten glass or some kind of alloy that melts slightly above room temperature... and toss a little sand art in it~
2:03 - 2:50 .. Wow, awesome!
The station rotates in an orbit around the Earth. The centrifugal forces and the gravitational forces cancel each other inside the station to give net 0 body force. In other words, the station follows a geodesic in the curved space-time around the earth.
how do you get a sphere of water in the first place?
Ok, I've been corrected. However, this is not in free fall, this is in orbit. There's a difference, and it's micro-g.
bubble wars...whats the worlds coming to?! lol...awesome vid, really cool to watch and interesting.
Very cool video. Expand the frontiers of nowledge and stuff. LOL. Seriously though cool!
retnuh66, I have to admit that in theory you're right. But for all intents and purposes this is zero g. An orbiter is probably as close as you could get. Plus any outside gravitational forces would affect the orbiter and anything in it equally so the frame of reference (in this case, the orbiter) would stay the same. But yeah, there is a minuscule gravitational force between all matter so you have a valid point :-)
how did you harness the water
Very interesting. Thank you.
how u make zero gravity?? are u in the space??
This isn't all they do up there. This was probably just a fun experiment they did (it must get pretty boring up there).
that was crazy, cool stuff
Um.... I don't know what to say to that. The first problem is that if you took a 2 liter of Coke (diet or otherwise) and opened it up in space (in other words, in a vacuum), all the CO2 would fizz out even without mentos. You'd need a mechanism to add the mentos to the soda and then expose it to vacuum. From there.. I can't adequately visualize the long term effects. I think you start off with an expanding cloud (of ice particles).
but at what scale is this sphere of water large?
i saw this awhile ago and i found it very interesting. but now i think ive realized something much deeper to all this. since this is done in space, and most of our earth is covered in water.. and the rock in its core is liquid.. and its floating through space. it would behave in a similar way. if we got struck by an astroid.. expect the back side to blow out, and for earth quakes to jiggle around back and forth. and the bubbles would be different densitys of rock. that can pop/collapse etc.