I think the revsersed diver is just the same bottle with more pressure in it to begin with, and the way you squeeze it actually make the bottle expand in volume so that the pressure drops.
The pressure actually remains the same. Have you ever tried to blow air in a balloon? The pressure inside the balloon remains the same when it's fully filled or not filled with air.
@@IAmGaz_ late... I actually caught the act in very few seconds he started, but boy he did well with his narration and slight of hand. Thats why it was 'well played'.
HA ! i was looking up exactly how to spell '' calrissian '' because auto spell check labeled it a wrong and suggested that it be spelt as '' Cartesian '' , and now i found a video in my '' recommendation list, and here we are. the purposeful answer i came up with was '' pressure '' from a full liquid diver, to a drop of air diver. that is what makes the diver sink [ with a drop of air ] , to one that rises , = pressure. . . the solid full diver rises when pressure is applied, verses the pressure to one diver that has a drop of air that causes it to sink, both have the same response = pressure. yes i did pause it at 1:53 . hmm, i did not think about reverse pressure, but still pressure none the less...... well in one case pressure was less in a certain area. awesome video !! 1000 thumbs up !!
My guess from 0:55: squeezing the bottle compresses the air inside the diver. The mass of the air doesn’t change, but the volume of water inside the diver and thus the mass of the water does change. Thus the weight of the diver is able to overcome the buoyant force. Edit: From 1:27: The “reverse version” is just you squeezing the bottle in a way that the volume inside the bottle increases. So the air in the diver decompresses a little.
Half a year ago, we had to make a projekt for it with a bottle. I did not understood how it worked,but i still have it. I knew that it has little air in there, and about the pressure but like... How.. So now i watch the video and i will understand
Oh cool! Wow I should have figured that because I've been reducing the pressure in large dishsoap bottles for years when trying to refill it with air, after squeezing it out.
You're squeezing the bottle differently. Has to do with the shape of the container changing. It creates more space in the same enclosure chamber and lowers the pressure.
In one the air is being pulled out and the other is being compressed by the way you are squeezing it. It’s just changing it’s buoyancy by air volume inside the diver.
My guess is that when you "squeeze" the bottle, you push the front and back out from squeezing the sides which actually decreases the pressure and unsqueezes the bottle, making the gas in the diver less dense and float up
1:29 its definately the way you squeeze. When squeezing the far side, the bottle wants to get round, increasing its volume. Because there is a fixed ammount of matter inside the bottle, the pressure Drops, allowing the gas in the heavy balanced diver to expand, increasing its boyancy and rise.
@@joed420 you think you're so amazing do you? That your guess you just made there is right? I don't care about lying to myself, that's the difference between you and me. I guessed to improve myself, turns out I am right. Besides that, this experiment is not hard to figure out by any means, so there's that. What kind of person thinks that someone commenting to this is cheating himself? Seems like you are very insecure about yourself 🤔😏
Great learning videos , thanks !! But why doesn’t space vacuum suck up earth atmosphere ? Can you demonstrate that in an experiment with a can of soda inside a vacuum chamber maybe ..
I nailed it before seeing the answer. There was a hint i how you... ummm... "squeezed" the second bottle, distorting it, actually increasing its volume.
I got to 1:18. Not looking at other responses and giving my answer. The first one the increased pressure of what little air is at the top of the bottle makes the driver sink. It was filled and capped at one atmospheric pressure. Conversely, the second bottle capped off at a vaccum so that when squeezed it causes the air at the top to pressurize to around normal atmospheric pressure. Going to unpause and see how well I did.
The method of the squeeze in the rising one the squeeze is really expanding the bottle creating lower pressure and the sinking one you create higher pressure resulting in the gas bubble to shrink making it less dense and the opposite for the other, I noticed this straight away, I did this kind of thing before to get a flame into a bottle so i can light a gas bottle rocket so i knew it would make a negative pressure on that shape of a bottle also works with shampoo bottle when you squeeze too much out and want to suck it back in
Wow great video I really enjoyed it and very interesting! You learn something new every day, and that's a good thing. So thank you for that! Have a good one buddy and see you next time:D
That's actually pretty cool I don't know how to explain it but when you press the bottle on the sides it decreases the gas pressure on top while the driver's gas is the same, making it go up, when you press the bottle from the back and front it increases the pressure and it goes down
Same effect taking place. The differences are that the second one has added mass, so that it's neutral state is slowly sinking. And the other difference is the way you squeezed the bottle. By pushing the short sides, you cause the long sides to bow out - This actually reduces the pressure in the bottle.
I already know the answer, but you should do these videos in two parts a day apart, so you can tell who cheated. Basically, one you squeeze the bottle front and back so it increases the pressure inside, the other you're squeezing the sides so the front and back bow outward, decreasing the pressure. It's the same way I make glue get sucked back into the bottle.
My guess is that when you are squeezing it from the sides you are making a lower pressure in the bottle cause the Cartesian diver to become more buoyant rather than less buoyant.
Honest guess, I'm stopped at 1:52 and I think it's how you're squeezing the bottles. On the normal one you're squeezing it more on the broader side. This will increase pressure, however on the reverse bottle you're squeezing it on the thinner sides! This makes the broader sides push outwards and decreases the pressure.
Buoyancy is changed by pressure, at the normal water enters the system and gives a negative value resulting in going down, the reverse, when you squeez the bootle on the 2nd you you change again the pressure resulting this time in less pressure that makes it go up, i think the bottle is not cylindrical and with a approximate rectangular shape you can make the pressure go up and down by squeezing it on the right sides, like the shorten sides the bottle gets more circular and that makes more space and that is less pressure. Sorry for the wired way of typing this but it is typed as i thinked on the 1st run.
the answer is pressure : by pressure the mid of bottle you has changed the pressure around the water from all direction into left and right, making the middle are having less pressure then the air inside the balloon are bigger by adding pressure from the side you changed the pressure to more focused in middle, making pressure in middle are higher so the less air will be floating because differential pressure like you says in 6.29 and what hapnned in vaccum chamber are more easier to explain, because the different pressure are not from water volume but by the air volume, which is in normal pressure the water having more weight than air, but in low pressure water will be having less weight (or i should call it volume?), because the air having less than usuall so by gravitational both of them will be floating. and air will be sucking it and making it lighter than water (feeling confuse?), the amount of air is bigger than water, less denser than water and faster to sucking out, but in water, they have more volume inside the cup making air molecules inside them are slower and ending it with cool boiled water. so i think my guess is true, but it hard to explain with word since im not good at science but lovely to observe everything
1:55 my guess would be a change in air/water pressure when you squeeze the bottle. Both divers have water in them, physics tells me that the one on the bottom at normal pressure would have more liquid inside and less air to float it up. I thought it was odd how you were squeezing the bottle from the side, I thought it was for camera view or something at first , until i realized you were intentionally deforming the bottle to create a tiny change in air/water pressure. EDIT: after finishing the video. Yay physics wins again lol, now a question, does it matter how much air is in the top of the bottle? Would it still work if the bottles were only half full of water?
I have a question, why can you smell the rain? Especially the first few seconds when the rain just started. I think it’s the smell of dust but I’m not sure, and I don’t know why.
I think it’s because the rain washes away the plants’ oil. When it rains your smelling that. I think that’s why. I heard the reason before. I don’t really remember.
Is actually due to some oil scents exuded by some plants in dry seasons, the oil is called "petrichor" and is absorbed by the soil and this one is released when the soul gets washed by the rain. Releasing the familiar scent of the "wet soil" that we all recognize.
Ok, I haven’t seen the answer yet and I think that it has to do with the way he is squeezing the bottle. With the regular Cartesian diver he is putting the air inside the bottle under compression and for the reverse diver bottle he is pressing the other sides of the bottle, which creates a bit of a vacuum inside.
I think I know it, the normal one has so much water in it that it floats on top and when you compress the bottle the pressure goes up because of which the diver goes down. The reverse diver on the other hand has more water in it so it's usually on the ground, but you compress the bottle in a different way which leads the front and back wall to go away from each other which makes more space in the bottle, that way the pressure goes down and the air in the diver is enough to get it on top of the bottle. It could also be that I messed something up and some things are the opposite of what I said
I stopped at 1:53 to gander a guess: it's the shape of the bottle. This can't happen in a cylindrical bottle like a water bottle. The Listerine bottle can be reduced in volume by squeezing one direction (flattening) and increased in volume when squeezed from a different direction (fattening). When the volume of the bottle increased the air in the glass tube expanded as well increasing its size and buoyancy thus floating. When it was flattened, the air also squeezed and reduced its buoyancy and thus sinking.
Is it based on the water put in the little capsules. Once you put enough pressure it'll make the one with more water rise. Let it go and the weight of the water is more than the pressure needed to rise.
My guess would be a denser liquid than water that under normal conditions is just slightly denser than water so it sinks, but when the bottle is squeezed and the pressure inside rises raising the water density a bit, the flask becomes slightly less denser than the water and so it floats.
I have a weird but good question. Are you able to make a cloud probably inside the pressure chamber or some other way and make it rain as well. If so are you able to move or delete that cloud or even release it into the atmosphere in your recording room
my first question would be why are you squeezing the two bottles differently? that makes me think that youre trying to draw a vacuum in the top part of the bottle, reducing the pressure on the gas bubble which causes the gas in the tube to expand and displace the water inside of it, making it weigh less so that it floats up.
The reverse is simple. By squeezing the sides youre decreasing the pressure inside, which causes the air bubble in the diver to expand, pushing water out and increasing its buoyancy as a result.
paused at 1:55 - my guess is it has something to do with the fact that you're squeezing the bottle differently, maybe *decreasing* the pressure inside and causing the diver (which has been made less buoyant than the other) to rise. edit: I was right!
1:52 - Not sure what the liquids are but my guess is they are different and that chemical difference reacts differently with the divers' specific gravity.
I really dont know what I'm getting into, but let me try explain it : For the regular cartesian diver, when you apply pressure on the top, it sinks to the bottom because it's sort of "looking" for a less pressured area because of that air bubble. The reversed one is basically the same principle, except it must be heavier/ more dense, so it sinks to the bottom when no pressured is applied. Did I get it right?
great video but I still don't understand how it works. yes with the air pressure but why ? one floats up and the other one goes down depending on the air pressure but why ? how does the bubble change ?
The way the pressure is being applied to the bottle increases or decreases the volume of the bottle. Given that the bottle is closed, the overall density increases or decreases compared to the diver's
When pressure is applied to the front and back of the bottle, upward water pressure increases. When pressure is applied to the sides of the bottle, water pressure decreases due to the expansion of the bottle.
I'm guessing that it has to do with how you squeeze the bottle because in one way you're compressing the fluid and the other way you're removing a gamp causing a vacuum and it will allow the air bubble in the diver to expand and rise
I think the amount of water on top of the glass increases and decreases depending on how he squeezes the bottle and the glass is very close to sinking or floating already
I tried to think myself first... how would he do it? I failed... On the internet I googled "expansion under pressure" and found a unique material that expands under pressure. It is a crystal. Maybe this some nice stuff for the Action Lab???
I think the revsersed diver is just the same bottle with more pressure in it to begin with, and the way you squeeze it actually make the bottle expand in volume so that the pressure drops.
He also squeezes the bottle in different places
i don't fully get it but I think basically you change the density by controlling the atmospheric pressure
That's exactly what I was going to say, but ya beat me to it! :-)
@@telephony You are a smart man
The pressure actually remains the same. Have you ever tried to blow air in a balloon? The pressure inside the balloon remains the same when it's fully filled or not filled with air.
Listerine bottle was a great choice. Well played.
Lakru Mallawa huh?
@@IAmGaz_ Do you ever use mouthwash? Don't recognize the bottle? Hmmm
Of course I do. I just don’t get the “well played”
@@IAmGaz_ OH yeah.. haha sorry! I got it now.
@@IAmGaz_ late...
I actually caught the act in very few seconds he started, but boy he did well with his narration and slight of hand. Thats why it was 'well played'.
HA ! i was looking up exactly how to spell '' calrissian '' because auto spell check labeled it a wrong and suggested that it be spelt as '' Cartesian '' , and now i found a video in my '' recommendation list, and here we are.
the purposeful answer i came up with was '' pressure '' from a full liquid diver, to a drop of air diver. that is what makes
the diver sink [ with a drop of air ] , to one that rises , = pressure. . . the solid full diver rises when pressure is applied, verses
the pressure to one diver that has a drop of air that causes it to sink, both have the same response = pressure.
yes i did pause it at 1:53 .
hmm, i did not think about reverse pressure, but still pressure none the less...... well in one case pressure was less in a certain area.
awesome video !!
1000 thumbs up !!
Action lab की जय हो।
Action lab की जय हो।
Action lab की जय हो।
I think I would get a reply from Action Lab🤔
Let's see
Jai action lab, jai pibg
@@tarangpatil6952 I don't play pubg , I stopped long ago bro.
Yes!!! *I am always on the lookout for another fantastic ActionLab video!!!*
Love this guy!!!
My guess from 0:55: squeezing the bottle compresses the air inside the diver. The mass of the air doesn’t change, but the volume of water inside the diver and thus the mass of the water does change. Thus the weight of the diver is able to overcome the buoyant force.
Edit: From 1:27: The “reverse version” is just you squeezing the bottle in a way that the volume inside the bottle increases. So the air in the diver decompresses a little.
Half a year ago, we had to make a projekt for it with a bottle. I did not understood how it worked,but i still have it. I knew that it has little air in there, and about the pressure but like... How.. So now i watch the video and i will understand
I don't know, but i stopped the video and started praying to my new God. for he maketh thingy float and he maketh thingy sink. All Hail.
Oh cool! Wow I should have figured that because I've been reducing the pressure in large dishsoap bottles for years when trying to refill it with air, after squeezing it out.
It's so easy to see what's happening here, he's clearly a magician
Pfffffttt... Idiots, he's clearly not a magician, the diver's a paid actor.
You are genius. You give New features and questions to old and known experiments.
You're squeezing the bottle differently. Has to do with the shape of the container changing. It creates more space in the same enclosure chamber and lowers the pressure.
You are forcing the bottle to be more cylindrical by squishing it on its long end.
This actually increases it volume, dropping the air pressure above.
@@mastervelyk2507 ok?
@@mastervelyk2507 Your brain can speak? Do you have a second mouth in your head?
the clearest Listerine ad I had ever seen :D
I think because of the format of the bottle when you squeeze it from the sides it actually increases in volume, making the pressure go down.
In one the air is being pulled out and the other is being compressed by the way you are squeezing it. It’s just changing it’s buoyancy by air volume inside the diver.
A question came in jee advanced 2021 today based on this
True
My guess is that when you "squeeze" the bottle, you push the front and back out from squeezing the sides which actually decreases the pressure and unsqueezes the bottle, making the gas in the diver less dense and float up
In the beginning I thing it's a bored scientific thing. But what you showed is pretty convincing and easy to realized.
1:29 its definately the way you squeeze.
When squeezing the far side, the bottle wants to get round, increasing its volume.
Because there is a fixed ammount of matter inside the bottle, the pressure Drops, allowing the gas in the heavy balanced diver to expand, increasing its boyancy and rise.
Yes I can watch the video and comment afterwards also!
@@joed420 you think you're so amazing do you?
That your guess you just made there is right?
I don't care about lying to myself, that's the difference between you and me.
I guessed to improve myself, turns out I am right.
Besides that, this experiment is not hard to figure out by any means, so there's that.
What kind of person thinks that someone commenting to this is cheating himself?
Seems like you are very insecure about yourself 🤔😏
*_Laughs in Vsauce_*
Ohhhh, so basically its the pressure on the bubble?
Great learning videos , thanks !! But why doesn’t space vacuum suck up earth atmosphere ? Can you demonstrate that in an experiment with a can of soda inside a vacuum chamber maybe ..
Liked your topic
Maybe Earth's gravity holds atmosphere intact.. ;)
You are in fact decreasing pressure instead of increasing due to pressing at the slimer sides. It expands the bottle and the bubble as well.
Thanks for these explanations, your channel means a lot for me.
Why so...
It's the way you're squeezing the bottle. You're creating lower pressure in the bottle and causing the air pocket to expand rather than compress.
A question similar to this came into JEE ADVANCED 2021 physics (paper2) 😂
Because of the form of the bottle and the way you squeeze it you are either increasing or decreasing the pressure inside of the bottle.
This is interesting
I loved it
I wish I have the permission in school to show them what I learn without them, thanks to you I learn more like this😁
I nailed it before seeing the answer. There was a hint i how you... ummm... "squeezed" the second bottle, distorting it, actually increasing its volume.
@theactionlab this will make a great action box
I got to 1:18. Not looking at other responses and giving my answer. The first one the increased pressure of what little air is at the top of the bottle makes the driver sink. It was filled and capped at one atmospheric pressure. Conversely, the second bottle capped off at a vaccum so that when squeezed it causes the air at the top to pressurize to around normal atmospheric pressure. Going to unpause and see how well I did.
thanks a lot for my preparation of teaching！
Is the reverse cartesian diver anything like the reverse cowgirl?
Lmaoo!!! Haha I'm dying
No literally I'm dying plz help
squeeze her on the side and your diver will go up?
My boy Danny Flo
No... A reverse inverted cowgirl.
The method of the squeeze in the rising one the squeeze is really expanding the bottle creating lower pressure and the sinking one you create higher pressure resulting in the gas bubble to shrink making it less dense and the opposite for the other, I noticed this straight away, I did this kind of thing before to get a flame into a bottle so i can light a gas bottle rocket so i knew it would make a negative pressure on that shape of a bottle also works with shampoo bottle when you squeeze too much out and want to suck it back in
Love it you are thw best
Great video! Thanks this was interesting
Thanks for the video really helpful
Wow great video I really enjoyed it and very interesting! You learn something new every day, and that's a good thing. So thank you for that! Have a good one buddy and see you next time:D
That's actually pretty cool I don't know how to explain it but when you press the bottle on the sides it decreases the gas pressure on top while the driver's gas is the same, making it go up, when you press the bottle from the back and front it increases the pressure and it goes down
Oh wow I actually got it
Same effect taking place.
The differences are that the second one has added mass, so that it's neutral state is slowly sinking.
And the other difference is the way you squeezed the bottle. By pushing the short sides, you cause the long sides to bow out - This actually reduces the pressure in the bottle.
I already know the answer, but you should do these videos in two parts a day apart, so you can tell who cheated.
Basically, one you squeeze the bottle front and back so it increases the pressure inside, the other you're squeezing the sides so the front and back bow outward, decreasing the pressure. It's the same way I make glue get sucked back into the bottle.
awesome experiment.
That’s cool and all but are those Listerine bottles?
My guess is that when you are squeezing it from the sides you are making a lower pressure in the bottle cause the Cartesian diver to become more buoyant rather than less buoyant.
This reminds me of ballast tanks and the Galileo thermometer
I thought that aswell
Honest guess, I'm stopped at 1:52 and I think it's how you're squeezing the bottles. On the normal one you're squeezing it more on the broader side. This will increase pressure, however on the reverse bottle you're squeezing it on the thinner sides! This makes the broader sides push outwards and decreases the pressure.
That's pretty clever. 👍
Buoyancy is changed by pressure, at the normal water enters the system and gives a negative value resulting in going down, the reverse, when you squeez the bootle on the 2nd you you change again the pressure resulting this time in less pressure that makes it go up, i think the bottle is not cylindrical and with a approximate rectangular shape you can make the pressure go up and down by squeezing it on the right sides, like the shorten sides the bottle gets more circular and that makes more space and that is less pressure. Sorry for the wired way of typing this but it is typed as i thinked on the 1st run.
the answer is pressure :
by pressure the mid of bottle you has changed the pressure around the water from all direction into left and right, making the middle are having less pressure then the air inside the balloon are bigger
by adding pressure from the side you changed the pressure to more focused in middle, making pressure in middle are higher so the less air will be floating because differential pressure like you says in 6.29
and what hapnned in vaccum chamber are more easier to explain, because the different pressure are not from water volume but by the air volume, which is in normal pressure
the water having more weight than air, but in low pressure water will be having less weight (or i should call it volume?), because the air having less than usuall so by gravitational both of them will be floating. and air will be sucking it and making it lighter than water (feeling confuse?),
the amount of air is bigger than water, less denser than water and faster to sucking out,
but in water, they have more volume inside the cup making air molecules inside them are slower and ending it with cool boiled water.
so i think my guess is true, but it hard to explain with word since im not good at science but lovely to observe everything
Love your videos 😍😍😘😘😘
Today's fact: Samuel Jackson has a clause in his film contracts that allows him to play golf during film shoots whenever he wants.
Really ?
@@wayneboshoff2241 He's Samuel Fucking Jackson, he can do anything he wants!
@@cahidijoyoraharjo7833 we got to get these motherfricking snakes off this fricking plane
@@How_To_Drive_a_TARDIS I've had it! With these mothafuckin snakes in this mothafuckin plane!
Penny Wise in the Reverse Cartesian Diver: "We all float down here."
UA-cam bugs: "INCLUDES PAID SPONSERS"
Me: For two Listerine Bottles??
This was a good one, first time I saw this... didn't guess it. 👍
1:55 my guess would be a change in air/water pressure when you squeeze the bottle. Both divers have water in them, physics tells me that the one on the bottom at normal pressure would have more liquid inside and less air to float it up. I thought it was odd how you were squeezing the bottle from the side, I thought it was for camera view or something at first , until i realized you were intentionally deforming the bottle to create a tiny change in air/water pressure.
EDIT: after finishing the video. Yay physics wins again lol, now a question, does it matter how much air is in the top of the bottle? Would it still work if the bottles were only half full of water?
I have a question, why can you smell the rain? Especially the first few seconds when the rain just started. I think it’s the smell of dust but I’m not sure, and I don’t know why.
Wei Jin it's the dust. try it. go outside and water the dirt. smells good.
I think it’s because the rain washes away the plants’ oil. When it rains your smelling that. I think that’s why. I heard the reason before. I don’t really remember.
Due to plant oils & actinomycetes
Is actually due to some oil scents exuded by some plants in dry seasons, the oil is called "petrichor" and is absorbed by the soil and this one is released when the soul gets washed by the rain. Releasing the familiar scent of the "wet soil" that we all recognize.
I have never seen the 'reverse' demonstrated before!
Ok, I haven’t seen the answer yet and I think that it has to do with the way he is squeezing the bottle. With the regular Cartesian diver he is putting the air inside the bottle under compression and for the reverse diver bottle he is pressing the other sides of the bottle, which creates a bit of a vacuum inside.
Action lab rocks
That's pretty cool!
Mom:Throw Away Your Listerine Bottles
Me: You Got Vacuum Chamber?
A nice demonstration, do you do this with your students?
just for giggles and grins ; It goes up because the force is strong with you , Jedi Master.
I think I know it, the normal one has so much water in it that it floats on top and when you compress the bottle the pressure goes up because of which the diver goes down.
The reverse diver on the other hand has more water in it so it's usually on the ground, but you compress the bottle in a different way which leads the front and back wall to go away from each other which makes more space in the bottle, that way the pressure goes down and the air in the diver is enough to get it on top of the bottle.
It could also be that I messed something up and some things are the opposite of what I said
I stopped at 1:53 to gander a guess: it's the shape of the bottle. This can't happen in a cylindrical bottle like a water bottle. The Listerine bottle can be reduced in volume by squeezing one direction (flattening) and increased in volume when squeezed from a different direction (fattening). When the volume of the bottle increased the air in the glass tube expanded as well increasing its size and buoyancy thus floating. When it was flattened, the air also squeezed and reduced its buoyancy and thus sinking.
I subscribed
Is it based on the water put in the little capsules. Once you put enough pressure it'll make the one with more water rise. Let it go and the weight of the water is more than the pressure needed to rise.
You are decreasing the atmospheric pressure by increasing the volume of the bottle by squeezing it in a way that bends the bottle outward
Pressing the container in those two different ways causes either added or reduced pressure
The reverse is probably a denser gas, or less dense liquid. When squized the density of the liquid increases to make the bubble buoyant
expanding the volume of the reverse diver
Can ship float on water in vacuum
My guess would be a denser liquid than water that under normal conditions is just slightly denser than water so it sinks, but when the bottle is squeezed and the pressure inside rises raising the water density a bit, the flask becomes slightly less denser than the water and so it floats.
Cool 😎 science project! 🎭🎪🚩🇺🇸
I have a weird but good question. Are you able to make a cloud probably inside the pressure chamber or some other way and make it rain as well. If so are you able to move or delete that cloud or even release it into the atmosphere in your recording room
my first question would be why are you squeezing the two bottles differently? that makes me think that youre trying to draw a vacuum in the top part of the bottle, reducing the pressure on the gas bubble which causes the gas in the tube to expand and displace the water inside of it, making it weigh less so that it floats up.
That's beyond science!
The reverse is simple. By squeezing the sides youre decreasing the pressure inside, which causes the air bubble in the diver to expand, pushing water out and increasing its buoyancy as a result.
paused at 1:55 - my guess is it has something to do with the fact that you're squeezing the bottle differently, maybe *decreasing* the pressure inside and causing the diver (which has been made less buoyant than the other) to rise.
edit: I was right!
The exact question in jee advanced 2021
1:52 - Not sure what the liquids are but my guess is they are different and that chemical difference reacts differently with the divers' specific gravity.
whoa!
I really dont know what I'm getting into, but let me try explain it :
For the regular cartesian diver, when you apply pressure on the top, it sinks to the bottom because it's sort of "looking" for a less pressured area because of that air bubble.
The reversed one is basically the same principle, except it must be heavier/ more dense, so it sinks to the bottom when no pressured is applied.
Did I get it right?
great video but I still don't understand how it works. yes with the air pressure but why ? one floats up and the other one goes down depending on the air pressure but why ? how does the bubble change ?
Everybody will be a self proclaimed genius with this video. Barometric pressure. Without watching the video.
When you squeeze that Listerine bottle you are squeezing the Earth's air pressure.. But on a Microscale. Love your work.. Because Science.
i am so happy that the answer that i guessed was true 😀😀😀😀
The way the pressure is being applied to the bottle increases or decreases the volume of the bottle. Given that the bottle is closed, the overall density increases or decreases compared to the diver's
When pressure is applied to the front and back of the bottle, upward water pressure increases.
When pressure is applied to the sides of the bottle, water pressure decreases due to the expansion of the bottle.
I'm guessing that it has to do with how you squeeze the bottle because in one way you're compressing the fluid and the other way you're removing a gamp causing a vacuum and it will allow the air bubble in the diver to expand and rise
You sly dog. That was awesome and so easy. Thanks for a great video for demoing to grandkids.
I think the amount of water on top of the glass increases and decreases depending on how he squeezes the bottle and the glass is very close to sinking or floating already
This problem is asked in jee advanced 2021
If you put the reverse Cartesian Diver in the sea would it reach a depth where it would just be suspended in open water?
So does your Cartesian diver have coordinates yet? :) Good video!
I tried to think myself first... how would he do it? I failed... On the internet I googled "expansion under pressure" and found a unique material that expands under pressure. It is a crystal. Maybe this some nice stuff for the Action Lab???
So in theory temperature could also affect them.
Very cool I did 1 of them in school
Diffrent pressures the reverse diver must have a little more liquid in it or diffrent pressure in mould of diver
Ppl need to learn about pressures, gas pressures, positive pressure, negative pressures, and how pulmonary mechanism works.
The area above the water is in low pressure so when you press it the pressure becomes avalable for it to float