Shalom Yeshua Ha-Mashiach é. Menor letra da Torá está no meio ? Como o Redento no meio do Candelabro ? Yeshua tem o radical valor numérico de Riacho, rio ? O Sacerdote levanta a mão fazendo simbolo de três em cada mão e a cabeça é o centro simbolizando a menorá e então o Mashiach veio no centro e meio do quarto milênio ? No riacho aonde David pegou as 5 pedras , é o Meio da semana e o Braço do meio do candelabro? , Divisor de Águas, O Rebento que carregaria e cumpriria todo queijo que trouxe a seus Irmãos, com as 5 Pedras Cravada no coração ( Torá ) ? Reflitam em mais pontos Dese Samuel ........😊 " Serpente de Bronze que Moshe Levantou " . Leviathan da Sabedoria ? ua-cam.com/video/vaQ7RoednlE/v-deo.html Yerushalayim de Ouro ua-cam.com/video/1g65M14zL00/v-deo.html Shema Yerushalayim yisrael 1 - ua-cam.com/video/7kXIokZOhP4/v-deo.html 2 - ua-cam.com/video/KNJcmYXz-Xw/v-deo.html 3 - ua-cam.com/video/Eo4uDbfXav4/v-deo.html 4 - ua-cam.com/video/lirXouNqgYU/v-deo.html 5 - ua-cam.com/video/vv682LasZ_g/v-deo.html
I didn't know that the two vortices are really the two ends of a spinning tube. It nicely explains why they come in pairs, and the idea of using dye to make them visible is clever and beautiful. I learned something really neat today!
@@eduardodemedeiroscarlos5175 I think it goes much deeper than fluids. I suspect something analogous to this underlies entanglement and other quantum weirdness.
This is why I signed up to do Theoretical Physics at University. This is exactly what we didn't do during my course on Theoretical Physics at University. Sad times.
Followed you here Sancarn. Thanks! I really love this kind of thing. I'll see what else she has on her channel and most likely will subscribe. All the best to you. :)
Physics Girl - I've just found this video and it's brilliant! - I'm going to show it to all my pre-university and university level students when they are starting their learning for hydrodynamics. Many Thanks
+Someone Special Wish I'd had her teach my physics course in HS or at Purdue years ago, instead of the dour kraut I had there! I'd have enjoyed it MUCH more & paid better attention to it back then!
I've been recently studying the play of light reflecting on top of, as opposed to the shadows seen through the water, but that double vortex just blew my mind! That's amazing how it just rolls along, when the conditions allow for it.
Ok, this sounds good to me except for one thing. How much space time does a wormhole created like this cover. Physics Girl made a tunnel through the fabric of water and it wasn't a very long tunnel. The amount of energy required to create a wormhole that bends space time is astronomical, perhaps as much energy as exists in the entire universe.
Except that the fourth dimension is time and you can't have time as a dimension in your "4d plate". Also, we need two media (one being the fabric of space-time) for this kind of an arrangement, and last I checked our universe has only one. But the Idea is still open to future discoveries.
ive done this with a much larger plate with a sharper concave edge, and i love colliding the half rings. if you do it just right, the spots will start to spread out, then seem to get so close that they seem to swallow each other up, and then dissapear. at night sometimes bubbles get caught in the collision, and it highlights the vortex line with the pool light, and the vortices sometimes expand to over four feet in diameter before "exploding". another cool thing that happens when the dips get really close is that they get deeper due to the faster spinning caused by the stretching half ring, and makes a weird gurgling noise. its quite fun when you are bored and you dont like cold water. :)
Can you name the scientist who proved that life can be created or " evolved " from inorganic matter ??? The answer is no. It has never been proven. Why ? It is not possible. If life can't be created from inorganic material on purpose . Then how did it happen by accident ??? CLICK THESE LINKS TO WATCH Bold New Theory On The Origin Of Life ua-cam.com/video/DpuHOqbDjoc/v-deo.html&list=WL&index=1 Can Science Explain the Origin of Life? ua-cam.com/video/fgQLyqWaCbA/v-deo.html Origin of Life 1. Life Came From Other Planets. Myth of the Organic Soup & Abiogenesis ua-cam.com/video/ByUod2VmBQY/v-deo.html
I like how she is having fun translating the science into layman's terms for ease of understanding. Some people cannot even begin to wrap their mind around science. For me personally, I was chastised as a young boy for using big words... when others had no idea what I was talking about... it felt like I was speaking a different language and it took so much longer for me to put the same concept into simpler words for someone who maybe hasn't read as many diverse subjects. I grew up with an Encyclopedia Britannica set that was my internet before the internet.
That's awesome! Don't get discouraged if every class is not as interesting as this demonstration. If you can get through the boring classes there are countless phenomena like this one that can be understood and if nothing else, appreciated.
Jacob Beckey Great advice. At times, it's a struggle to understand the math and the concepts behind physics, but once you do you can explain phenomena like this. That's what's great about trying to understand the world.
Physics Girl To be honest I am under the impression that there should be more of this kind of "explaining phenomena" in education. People should start with something like this and say "Why?" Then we learn the reasons why. Then we start to relate it to other things like tornadoes and smoke rings. I had no idea that smoke rings form because of this, nor that mushroom clouds form from the same phenomena. And I've got a degree in Theoretical Physics... xD I think education really needs to be revolutionised. But it's getting there I guess.
N3rdSci3nc3 If you had a piston come out from the side of the pool and a layer of oil, say vegetable oil, thick enough to incorporate half the vortex ring, then you could test it. However, I suspect that the differing properties of the water and the oil will lead to instability of the vortex. The difference in physical properties; like the viscosity, density and compressibility, and even the chemical properties; like the molecular polarity, will lead to one half of the vortex ring lagging behind the other half. Friction between the two separating halves will lead to a loss of angular momentum as the water half of the vortex acts on the oil not in the oil's half of the vortex and oil's half of the vortex acts on the water not in the water's half of the vortex. Though it wouldn't hurt to perform the experiment and see for ourselves. Might have to reduce the size of the experiment a little, or find some where where oil and water are already being stored together where an apparatus can be submerged that would generate the vortex. Any ideas where such an experiment could be performed?
It is hard to concentrate on the physics when the nature's beautiful creation is in front of you. That is why perhaps we do not often find beautiful professors :D
I am fascinated by the concept of a vortex, and so I love this video! It makes sense that I have this fascination, since I got good grades in math and science as a kid!
Wow that's awesome! I thought I'd know a lot more about these than I apparently actually know. The food-coloring experiment was pretty epic. I had no idea that these things take matter with them. (In retrospect it should have been obvious though, given that that's precisely how smoke rings work) Really nice experiment
Thank you. :) I was pretty shocked at how well that worked. I thought it might swirl around for a while on the surface or even get left behind, but it traveled down through the whole ring and stayed like that for a while.
kiysiy preservation of angular momentum, mostly. If you push water with a plate, it flows past the edge in a way that makes it rotate. You put angular momentum into the system (to do so, you must do work - not work in the everydaylife sense but in the sense defined in physics, but in this case the two concepts allign nicely) and that is one of the quantities which is always preserved in a free system (i.e. a system no work is performed on). The conservation of angular momentum explains why it is so stable. And the shape comes to be because we are talking about rotations here. Square vortices generally don't form. Elliptical ones could form, I guess. And under special circumstances (seem for instance, some of the vortices on Jupiter) they may be hexagonal.
Kram1032 Well, net angular momentum of the system is zero, and the dinnerplate isn't being torqued. It's like spinning up many pairs of flywheels, each CCW has a CW to cancel. But the net linear momentum isn't zero, so if you were floating in the pool, the Falaco half-ring gets momentum x, and your body gets equal momentum x in opposite direction. This illustrates that "vortex shedding" is the origin of thrust of propellers, rowboats, fish, and aircraft.
wbeaty Is it net-zero? Obviously, if you only take the cross-section that is visible on the surface, the two disks rotate in opposite directions so their combined angular momentum is zero. However, if you look at the bottom of the vortex-half-ring, there you have a rotational direction which may not be cancelled out. - it depends on what the air flow above that does, I suppose. Though given that there is a medium change, I don't think the induced angular momentum completely cancels out. Since you do work on the system, I don't see why there definitely shouldn't be any. That being said, I can see the linear momentum being non-zero too. (Else, after all, it wouldn't move forward) and for a full ring at least, I can see how angular momentum overally would cancel out and only that momentum would remain. Now I'd love to see a version of this experiment where you can also see the air flow. I'd assume that an air-vortex would form just as well as a water vortex did in these experiments. However, I'd also guess that the air half of the vortex would move at a different speed (if it didn't, it would have two separate momenta for the different media which would be weird.) and it probably wouldn't be as stable?
My goodness it's so refreshing to have a video show off something REALLY fun, with REAL science that doesn't just dumb it down beyond recognition. The part with the food colouring was very surprising! Recap (take notes rest of youtube): Attractive yet not just sexed up show host...with great monologue voice... No hyperbole clickbait buzzfeed title Accurate thumbnail... Intriguing content Seriously. Keep being my new favourite channel.
really nicely done - love the food coloring trick to see the connected half-vortex ring structure. Might be cool to try two different food colors (e.g. red and blue) in either half and watch the slow mixing (what causes the tangential transport along the vortex line? gravity/sedimentation?)
That was amazing! Really informative, just perfectly explained. And so easy, literally just physics happening right in front of you. I can't believe Mr. Wizard never figured this out!
This is intriguing, thank you for sharing! Also, your enthusiasm about Physics is just "so cool". The video honestly is a great representation of how awesome science can be. Especially Physics :)
beautiful water example of black holes/worm holes. The vortex shows 4th dimensional perspective, and the shadows show the 3rd dimensional perspective! Wow! I love this. thank you for being so incredibly brilliant.
From my observations, what's happening is that when the change in velocity creates a shear there's also a change in pressures whereby the vortex formed is at a high pressure and as it diverges outwards from the root low pressures will rise and sink into the vortex to equalise the pressure. Chances are the reason it lasts so long is because of the volume of the pool that has to sink into the vortex; it has to match the entire volumes pressure for it to disappate. I might be wrong hen it comes to the pressure duration but the dynamics are similar to an anti-cyclone.
I wonder if you did oil and water. If you could get two half vortices traveling at diferent speeds? Why did I watch this video at 10:30pm. Now I'm looking at a big plastic tub and wishing I had food dye and more vegtable oil. How am I suposed to sleep now?
no the reason is oil is less denser water ,so you will not observe it,but if u take liquids of nearly same density and having considerable difference in their viscosities then you will see vortex line at an angle
That.... was... awsome!!! Too bad we don't have many pools here in Norway. The public ones tend to have lots of pesky creatures with two arms and two legs that disturb the water..
Physics Girl, what if you try this with two fluids with different densities? Proverbial oil and water, could you have a half vortex at the boundary? Also awesome that when it hits the pool wall the volume stays the same so the diameter reduces. Great post.
That was really really neat. I'm kind of curious how many takes it took to get that nice sharp pair of vortices. Seems like for every good take you'd get a bunch of unusable blobs and have to wait for the pool to smooth out.
Haha that's a good question. The pool smoothes out enough after a minute or two. The wind is the real issue. The very first one I made was really good, but of course I wasn't filming. Then it was just a matter of getting the speed and direction of the "sweep" just right. :)
Dear Diana it is such a joy to watch your content! You truely are loving physics and teaching! Many many thx! One Love! Always forward, never ever backward!!
This effect is very cool, I couldn't help but think how this relates to space. If this effect could be replicated in the quantum vacuum of space, I wonder if it would create a wormhole and transfer matter from one vortex (wormhole opening / black hole) to another? Just a thought...
+Akili Visual That actually seems plausible. The two largest hindrences besides the theorem would be the energy source to create such a vortex, and the ability of your cargo to survive such a journey.
Another really wonderful video, thanks!!! What I think is so great about this channel is not only the clarity of the content, but also that your enthusiasm sort of gives us permission to get excited about it with you, if that makes sense. If I may, I'd like to ask a question related to your pondering on how to show half of a smoke ring. (With the stipulation that i really don't know anything about fluid dynamics) What would be the effect of projecting a smoke ring along the meeting plane of air and a heavier-than-air gas, like Sulfur Hexafluoride?
Thank you! Honestly, I don't know much about fluid dynamics either. I think it's one of the most difficult branches of physics, and most undergraduates are not required to take any fluid dynamics classes. (I wish i had taken one in undergrad!) That's a very interesting question though. I would assume the vortexes would move at different speeds because the viscosity for the two fluid is different.
Physics Girl Yeah I was talking to my friend one time about how fluid dynamics, a seemingly important branch of physics, just doesn't seem to be required in undergrad or graduate school for physics. Engineers are the ones who take it. I'm still in undergrad (physics) perhaps I should consider it.
This would be a neat experiment. I'm not fluid dynamics expert at all, but I can imagine that if the two fluids are at rest and that you're simply moving the ring as you've described, there would be a difference in the vortex speed, but the resulting difference may skew the ring out into a line, and possibly rotate it completely and repeat. I'm thinking of a ring forming into a line, then forming into a ring again, etc. and that's because there is no net external torque, so angular momentum is conserved, thus if the system rotates partially, it must rotate completely to conserve momentum. I think the reason we have a half ring in the video is because of the extreme case, where the bound viscosity difference is so much, that there is no angular velocity for the ring system itself, but given a critical viscosity ratio between the two liquids, there may be a case which the ring forms and reforms. Not sure! Fascinating question though.
2014?! I only discovered this channel in the past couple years but she's been absolutely fantastic at this for the past... *mental processing* 7+ years?! Freaking awesome channel and I'm really happy I subscribed.
yes you will get four if the plate would have two extra holes and the extreme holes will spin in the same direction and the middle ones would spin in other direction but the intresting part is the diameter of the vortex is independent of the diameter of the holes drilled on the plate it is completly a function of velocity with which the plate has been pushed
Redditor here! Well said m'lady! It is rare to find a maiden so well educated! It is this concept (the vortex) which has allowed me to be the reigning Mountain Dew chugging champion at the local Renaissance Fair for the past 7 years. By creating a perfect vortex in your throat, the Mountain Dew can easily flow into your stomach without any air restriction. It's that easy! - Trilby McTip, Redditor, Brony, Atheist, Mountain Dew Chugging Champion
LowFlyinGirl +1... - I'd go so far as to say "rare to see such a well educated youtube host" - gender has nothing to do with it. This show is incredible for a lot of factors. Host, content, delivery.
Woah! That makes me wonder; if a dish-shaped solid were to “scoop” through a bit of our atmosphere from space, it might create a HALF RING TWISTER! And based on the inherent stability of the circular motion, the twister might go EXCESSIVELY FAR!! Do you think that’s possible? Or would it have to be a more dense medium like the water?
I hated physics. The only thing that I liked about physics class was when it ended early. But this. I watched and the jaw dropped and I literally said out loud, "woah, cool" right before you said it in the video. So. Awesome.
FRUHD I think what you are refering to.. is boring teachers who probably hate their job and aren't very good at connecting with the brains of their students.. they make science boring.. but then you look at Vsauce and shit.. and young people are very interested in science, but only if they have a reason to be interested.. otherwise it's boring. (A lot of science teachers aren't even scientist, they just read from books and stuff, and the ones who are scientist.. don't get paid as much as they should, and they get payed the same as the other teachers when they're the ones missing out on money to educate kids).
I've just discovered you through reddit. How do I not know about this channel yet? You're one of the best teachers I've seen and I've had some amazing ones.
You can do this at home in a cup of tea \ coffee etc (if its a big enough one) using your spoon in replacement of the plate. I actually have wondered about this a lot since the vortices are so stable, it is a lot of fun! Thanks for the great explanation, and a shout-out to #pbsspacetime for getting me here :P
@@bennybooboobear3940 Ooh that's an interesting idea! I can't even wrap my mind around a universe without both of those things existing, and whether its possible life could exist in either one of those universes..
if you want to see the whole ring in using two different mediums ( water and air) try using something a bit closer to the density of water, like oil, so you have water and oil, the whole ring should be there in the water and air but since food coloring cannot float in air you are unable to see it. so by using oil which is closer to water the food coloring should show the entire ring
They look like two black holes connected with a wormhole...! (I wonder if there would be any connection).The demonstration of matter exchange between the two vortices was amazing !
You didn't mention one cool thing: If you cut the vortex in the middle with the plate, they dissipate immediately. Also, would this be analogous to entanglement?
Apparently until it contacts a boundary of a different medium, water through water, air through air, space through space. I think space is where the greatest potential is and the question is how exactly to create the vortex. I think the answer can be seen in Giza but I don't know if it can be understood exactly. It seems to work as the electron transfer chain in our mitochondria most apparently with the slabs above the King's chamber resonating as the enzymes that attract the electrons in our cells. It may sound crazy but I am pretty sure it's correct.
The inventor, math prof RM Keihn, called these Cosmic Strings ...and published his swimmingpool photos in arxiv General Relativity and QM Cosmology. arxiv.org/abs/gr-qc/0101098
Well you tell how it formed but not why it lasts so long and the main reason you didn't, is because mainstram science cannot admit the natureal laws, because they would reset the matrix.
I think this may also be this vortex, but I'm not certain. I moved my spoon through my coffee this morning, where the rounded side was going against the water, and two vortexes formed on either side. They of course didn't last, but that's really cool!
Just saw you on Seeker talking about Nuclear Energy and decide to check out your channel and this is the first video I watched. I'm hooked. Can't wait to watch more.
I wish I'd seen this a long time ago as I have a smiliar experiment but using iron oxide magnetic salts with a spoon in a coffee jar!!! Thanks for the clarity
I love science videos - wish I could make some this interesting
You always create physics, your movement, your speed. Its all science.
Some years later, you sure did.
i think you did. 😊🤘🏻
Shalom
Yeshua Ha-Mashiach é.
Menor letra da Torá está no meio ? Como o Redento no meio do Candelabro ? Yeshua tem o radical valor numérico de Riacho, rio ? O Sacerdote levanta a mão fazendo simbolo de três em cada mão e a cabeça é o centro simbolizando a menorá e então o Mashiach veio no centro e meio do quarto milênio ?
No riacho aonde David pegou as 5 pedras , é o Meio da semana e o Braço do meio do candelabro? , Divisor de Águas, O Rebento que carregaria e cumpriria todo queijo que trouxe a seus Irmãos, com as 5 Pedras Cravada no coração ( Torá ) ?
Reflitam em mais pontos Dese Samuel ........😊
" Serpente de Bronze que Moshe Levantou " . Leviathan da Sabedoria ?
ua-cam.com/video/vaQ7RoednlE/v-deo.html
Yerushalayim de Ouro
ua-cam.com/video/1g65M14zL00/v-deo.html
Shema Yerushalayim yisrael
1 - ua-cam.com/video/7kXIokZOhP4/v-deo.html
2 - ua-cam.com/video/KNJcmYXz-Xw/v-deo.html
3 - ua-cam.com/video/Eo4uDbfXav4/v-deo.html
4 - ua-cam.com/video/lirXouNqgYU/v-deo.html
5 - ua-cam.com/video/vv682LasZ_g/v-deo.html
@@dinastiashalom4440 eso qué?
I didn't know that the two vortices are really the two ends of a spinning tube. It nicely explains why they come in pairs, and the idea of using dye to make them visible is clever and beautiful. I learned something really neat today!
Yes I wonder if it’s how wormholes in space work!!
Same!! 7 years later though 😆
@@eduardodemedeiroscarlos5175 I think it goes much deeper than fluids. I suspect something analogous to this underlies entanglement and other quantum weirdness.
This is why I signed up to do Theoretical Physics at University.
This is exactly what we didn't do during my course on Theoretical Physics at University.
Sad times.
Followed you here Sancarn. Thanks! I really love this kind of thing. I'll see what else she has on her channel and most likely will subscribe. All the best to you. :)
This stuff is cool, but theory is the coolest.
electrocat1 Stop saying cool so much
cabaretampere sorry are we cool?
+Sancarn Dindn't the word Theoretical give you a hint? :P
Physics Girl - I've just found this video and it's brilliant! - I'm going to show it to all my pre-university and university level students when they are starting their learning for hydrodynamics. Many Thanks
Wish they'd shown me videos like this when I did my GCSEs!
Physics girl: try this at home when you're pool is too cold to swim in.
Me: I've got a pool? So Cool!
Yes many things to ponder
Am I only who was expecting a line below "I tried this and it works" instead I have a pool?
😬
A bathtub, maybe...?!
I've seen it in a tub
I don't know how many people worked on this video, for how long, or what budget.... but it is a real accomplishment.
You deserve 4 million views.
Ikr she has 7 million now
8 million
@@ShiratoriIsOffline more than 10 million
@@fcktheworldeconomicforum6804 oh god, It's like seeing a relic of the past
4 billion**
SHE EXPLAINS IT SO WELL I WISH SHE TAUGHT ME PHYSICS
+Someone Special She's already doing this
I think she will teach physics only to +Someone Special
+Someone Special Wish I'd had her teach my physics course in HS or at Purdue years ago, instead of the dour kraut I had there! I'd have enjoyed it MUCH more & paid better attention to it back then!
Someone Special I want her to teach me biology practical.
+Steve Kramer :what is dour kraut?
The food coloring trick is super cool. Really great demonstration! Thanks!
WOW where di you find all these people who are actually interested in learning something!!?? Well done!! Nature is AWESOME cool Vid!!
"Happy physicsing!"
"Nowadays, any noun can be verbed."
- author unknown
Verbed is also an example.
Nouned browned Aired googled youtubed tabbed PCed (personal computered ) Mobiled phoned lol there are a lot of them
@@catgirlQueer Verb is the word.... XD
@@catgirlQueer Happy exampling
Verbified
I've been recently studying the play of light reflecting on top of, as opposed to the shadows seen through the water, but that double vortex just blew my mind! That's amazing how it just rolls along, when the conditions allow for it.
i'm not sure which is cooler - the phenomenon or the explanation.
Thank you!
you're so cool and dreamy @-@
Phenomenal Explanation ))
It's the secret to creating wormholes! All we need is a 4 dimensional plate and we can make a tunnel through the fabric of space and time!
Jacob really....
Ok, this sounds good to me except for one thing. How much space time does a wormhole created like this cover. Physics Girl made a tunnel through the fabric of water and it wasn't a very long tunnel. The amount of energy required to create a wormhole that bends space time is astronomical, perhaps as much energy as exists in the entire universe.
Looked like the tunnel was longer than the distance between point and point b
Except that the fourth dimension is time and you can't have time as a dimension in your "4d plate".
Also, we need two media (one being the fabric of space-time) for this kind of an arrangement, and last I checked our universe has only one.
But the Idea is still open to future discoveries.
but i don't think you will be able to find negative energy in your garage.
2:07 -- the food coloring idea was brilliant!
ive done this with a much larger plate with a sharper concave edge, and i love colliding the half rings. if you do it just right, the spots will start to spread out, then seem to get so close that they seem to swallow each other up, and then dissapear. at night sometimes bubbles get caught in the collision, and it highlights the vortex line with the pool light, and the vortices sometimes expand to over four feet in diameter before "exploding". another cool thing that happens when the dips get really close is that they get deeper due to the faster spinning caused by the stretching half ring, and makes a weird gurgling noise. its quite fun when you are bored and you dont like cold water. :)
That's not what I was expecting when she added the food dye
It's not food dye it's food coloring silly
@@bonardemyma9523 it's just the same bruh
If you see one of these coming your way, DON'T PEE IN THE POOL!
@@BozHogan lmao
I hesitate to bring religion into this, but the first image you show is a perfect representation of The Flying Spaghetti Monster.
Hahahhaha praise be
Peter Young haha 😁
Can you name the scientist who proved that life can be created or " evolved " from inorganic matter ??? The answer is no. It has never been proven. Why ? It is not possible. If life can't be created from inorganic material on purpose . Then how did it happen by accident ??? CLICK THESE LINKS TO WATCH Bold New Theory On The Origin Of Life ua-cam.com/video/DpuHOqbDjoc/v-deo.html&list=WL&index=1 Can Science Explain the Origin of Life? ua-cam.com/video/fgQLyqWaCbA/v-deo.html Origin of Life 1. Life Came From Other Planets. Myth of the Organic Soup & Abiogenesis ua-cam.com/video/ByUod2VmBQY/v-deo.html
Peter Young ramen
e8iMm7KE999 hey tard, science isn't a democracy. It doesn't care what you think or believe, it will remain true.
I like how she is having fun translating the science into layman's terms for ease of understanding. Some people cannot even begin to wrap their mind around science.
For me personally, I was chastised as a young boy for using big words... when others had no idea what I was talking about... it felt like I was speaking a different language and it took so much longer for me to put the same concept into simpler words for someone who maybe hasn't read as many diverse subjects.
I grew up with an Encyclopedia Britannica set that was my internet before the internet.
I learned so much from watching this video it's ACTUALLY AMAZING.
Yess!! Now I have a video to show people when they ask why I'm always doing this with my miso soup.
XD
So true i do that.
aca
acapellascience yum I love miso soup and I do the same too
wait but how do you fit a plate in the bowl
After watching this, I signed up for Physics next term at my school. Thanks for the push! I was on the fence, but I'm excited to take it!
That's awesome! Don't get discouraged if every class is not as interesting as this demonstration. If you can get through the boring classes there are countless phenomena like this one that can be understood and if nothing else, appreciated.
Jacob Beckey Great advice. At times, it's a struggle to understand the math and the concepts behind physics, but once you do you can explain phenomena like this. That's what's great about trying to understand the world.
Physics Girl To be honest I am under the impression that there should be more of this kind of "explaining phenomena" in education. People should start with something like this and say "Why?" Then we learn the reasons why. Then we start to relate it to other things like tornadoes and smoke rings. I had no idea that smoke rings form because of this, nor that mushroom clouds form from the same phenomena. And I've got a degree in Theoretical Physics... xD
I think education really needs to be revolutionised. But it's getting there I guess.
Sancarn Totally agree! If schools approached education like this, we'd learn a lot more as kids.
New video! Check out this crazy vortex in the pool #physics ua-cam.com/video/pnbJEg9r1o8/v-deo.html
Could you get the fully ring by doing this where water and oil meet?
N3rdSci3nc3 If you had a piston come out from the side of the pool and a layer of oil, say vegetable oil, thick enough to incorporate half the vortex ring, then you could test it. However, I suspect that the differing properties of the water and the oil will lead to instability of the vortex. The difference in physical properties; like the viscosity, density and compressibility, and even the chemical properties; like the molecular polarity, will lead to one half of the vortex ring lagging behind the other half. Friction between the two separating halves will lead to a loss of angular momentum as the water half of the vortex acts on the oil not in the oil's half of the vortex and oil's half of the vortex acts on the water not in the water's half of the vortex.
Though it wouldn't hurt to perform the experiment and see for ourselves.
Might have to reduce the size of the experiment a little, or find some where where oil and water are already being stored together where an apparatus can be submerged that would generate the vortex.
Any ideas where such an experiment could be performed?
So cool. I'd try it, but I live in the UK where we don't have outdoor pools. Or sun.
It is hard to concentrate on the physics when the nature's beautiful creation is in front of you. That is why perhaps we do not often find beautiful professors :D
It would be interesting to take a massive plate and do that in an olympic size pool to see how big the shadows would be!
I did this with my little niblings and they LOST THIER MINDS 😂
Thanks for teaching us Dianna, I really hope you recover soon. ❤
I am fascinated by the concept of a vortex, and so I love this video! It makes sense that I have this fascination, since I got good grades in math and science as a kid!
Wow that's awesome! I thought I'd know a lot more about these than I apparently actually know. The food-coloring experiment was pretty epic. I had no idea that these things take matter with them. (In retrospect it should have been obvious though, given that that's precisely how smoke rings work)
Really nice experiment
Thank you. :) I was pretty shocked at how well that worked. I thought it might swirl around for a while on the surface or even get left behind, but it traveled down through the whole ring and stayed like that for a while.
> oval or a square?
kiysiy or a trefoil knot. Search on vortex knots
kiysiy preservation of angular momentum, mostly. If you push water with a plate, it flows past the edge in a way that makes it rotate. You put angular momentum into the system (to do so, you must do work - not work in the everydaylife sense but in the sense defined in physics, but in this case the two concepts allign nicely) and that is one of the quantities which is always preserved in a free system (i.e. a system no work is performed on). The conservation of angular momentum explains why it is so stable. And the shape comes to be because we are talking about rotations here. Square vortices generally don't form.
Elliptical ones could form, I guess.
And under special circumstances (seem for instance, some of the vortices on Jupiter) they may be hexagonal.
Kram1032 Well, net angular momentum of the system is zero, and the dinnerplate isn't being torqued. It's like spinning up many pairs of flywheels, each CCW has a CW to cancel. But the net linear momentum isn't zero, so if you were floating in the pool, the Falaco half-ring gets momentum x, and your body gets equal momentum x in opposite direction. This illustrates that "vortex shedding" is the origin of thrust of propellers, rowboats, fish, and aircraft.
wbeaty Is it net-zero? Obviously, if you only take the cross-section that is visible on the surface, the two disks rotate in opposite directions so their combined angular momentum is zero.
However, if you look at the bottom of the vortex-half-ring, there you have a rotational direction which may not be cancelled out. - it depends on what the air flow above that does, I suppose. Though given that there is a medium change, I don't think the induced angular momentum completely cancels out. Since you do work on the system, I don't see why there definitely shouldn't be any.
That being said, I can see the linear momentum being non-zero too. (Else, after all, it wouldn't move forward) and for a full ring at least, I can see how angular momentum overally would cancel out and only that momentum would remain.
Now I'd love to see a version of this experiment where you can also see the air flow. I'd assume that an air-vortex would form just as well as a water vortex did in these experiments. However, I'd also guess that the air half of the vortex would move at a different speed (if it didn't, it would have two separate momenta for the different media which would be weird.) and it probably wouldn't be as stable?
My goodness it's so refreshing to have a video show off something REALLY fun, with REAL science that doesn't just dumb it down beyond recognition. The part with the food colouring was very surprising!
Recap (take notes rest of youtube):
Attractive yet not just sexed up show host...with great monologue voice...
No hyperbole clickbait buzzfeed title
Accurate thumbnail...
Intriguing content
Seriously. Keep being my new favourite channel.
Thank you! I like the summary haha..
really nicely done - love the food coloring trick to see the connected half-vortex ring structure. Might be cool to try two different food colors (e.g. red and blue) in either half and watch the slow mixing (what causes the tangential transport along the vortex line? gravity/sedimentation?)
That's a great suggestion. Will have to try it soon.
That was really educational. I _thought_ I knew why the spots stayed together but I had NO IDEA about the "half vortex ring" phenomenon.
That was amazing! Really informative, just perfectly explained. And so easy, literally just physics happening right in front of you. I can't believe Mr. Wizard never figured this out!
I learn more from you, Vsauce, MinutePhysics etc then I do from school..
same
@@grieferoncamera4600 that was 4 years ago and now that i have advanced, school and college does teach you more than this lol, you'll see
@@somaannn If you spend enough time researching on your own then you'll learn more if you're really that dedicated
Me: *pauses at 2:34 *
Me: c:
Lol I see what you did there! XD
I don't get it
Why
I get it now! XD
Lol
I was completely unaware of this phenomenon until now. Holy crap, science is so cool.
My daughter likes the crazy pool vortex video so much!❤😊
Karlee, Well done!!!! You understand physics better than any professor. I think you should be teaching the course. Great video to show non believers.
This is intriguing, thank you for sharing! Also, your enthusiasm about Physics is just "so cool".
The video honestly is a great representation of how awesome science can be. Especially Physics :)
Thank you! I didn't realize how many times I said "so cool" but judging by the number of comments, it appears to be a lot! :)
Physics Girl
It was :) But it represents the awesomeness of science just so well... maybe it could be your catchphrase!
So in order to stop hurricanes we just need to destroy god's plate.
BinkieMcFartnuggets oh damn
Stop right there
McGuiness 👋🏼
BinkieMcFartnuggets, Harvard: bro we got some dorms here if you wanna stop by
Illuminati: we are tracking you down.
beautiful water example of black holes/worm holes.
The vortex shows 4th dimensional perspective, and the shadows show the 3rd dimensional perspective!
Wow! I love this. thank you for being so incredibly brilliant.
From my observations, what's happening is that when the change in velocity creates a shear there's also a change in pressures whereby the vortex formed is at a high pressure and as it diverges outwards from the root low pressures will rise and sink into the vortex to equalise the pressure. Chances are the reason it lasts so long is because of the volume of the pool that has to sink into the vortex; it has to match the entire volumes pressure for it to disappate. I might be wrong hen it comes to the pressure duration but the dynamics are similar to an anti-cyclone.
You can get this process if you drag a spoon though a hot drink
In my case I use :
- Hot coffee w/ 3 tsp of honey
- Metal tsp
I wonder if you did oil and water. If you could get two half vortices traveling at diferent speeds?
Why did I watch this video at 10:30pm. Now I'm looking at a big plastic tub and wishing I had food dye and more vegtable oil.
How am I suposed to sleep now?
make you some Flow-tubes Put one color in the oil and a Different color in the Water and
see but it might mix.
no the reason is oil is less denser water ,so you will not observe it,but if u take liquids of nearly same density and having considerable difference in their viscosities then you will see vortex line at an angle
Straight up made me spill my drink from laughter lol
That.... was... awsome!!!
Too bad we don't have many pools here in Norway. The public ones tend to have lots of pesky creatures with two arms and two legs that disturb the water..
Physics Girl, what if you try this with two fluids with different densities? Proverbial oil and water, could you have a half vortex at the boundary?
Also awesome that when it hits the pool wall the volume stays the same so the diameter reduces.
Great post.
3:28
This is probably the coolest part of the video for me.
Me to s4r1n
I Love Whirpools So much
Also My Mom Is Just Mad T Me So I Can't Make Whirpools
@@bonardemyma9523 r/youngpeopleyoutube
Woah, you actually put some ink to reveal the invisible spinning connection, I was craving to see that somewhere. So cool!
This experiment inspired us so we made pool vortexes and recorded it also!! :)))
But unfortunately, it wasn't sunny for us, so we had to put food coloring in to see the vortexes. :)
Um...Maybe You Right Rina
Nice Picture Rica Also
That was really really neat. I'm kind of curious how many takes it took to get that nice sharp pair of vortices. Seems like for every good take you'd get a bunch of unusable blobs and have to wait for the pool to smooth out.
Haha that's a good question. The pool smoothes out enough after a minute or two. The wind is the real issue. The very first one I made was really good, but of course I wasn't filming. Then it was just a matter of getting the speed and direction of the "sweep" just right. :)
wow thanks for the explanation and the great effort making us this video! :)
"Many thanks to the Vlogbrothers for their sponsorship of this video!"
Glad to see you are selling out. That means more videos!
What? Getting funding is selling out?
Caleb Jones
Calm down. It was a joke.
Dear Diana it is such a joy to watch your content! You truely are loving physics and teaching!
Many many thx!
One Love!
Always forward, never ever backward!!
Thanks!
This effect is very cool, I couldn't help but think how this relates to space. If this effect could be replicated in the quantum vacuum of space, I wonder if it would create a wormhole and transfer matter from one vortex (wormhole opening / black hole) to another?
Just a thought...
+Akili Visual That actually seems plausible. The two largest hindrences besides the theorem would be the energy source to create such a vortex, and the ability of your cargo to survive such a journey.
Agreed
Another really wonderful video, thanks!!! What I think is so great about this channel is not only the clarity of the content, but also that your enthusiasm sort of gives us permission to get excited about it with you, if that makes sense.
If I may, I'd like to ask a question related to your pondering on how to show half of a smoke ring. (With the stipulation that i really don't know anything about fluid dynamics) What would be the effect of projecting a smoke ring along the meeting plane of air and a heavier-than-air gas, like Sulfur Hexafluoride?
Beat me to it. This exactly.
Thank you! Honestly, I don't know much about fluid dynamics either. I think it's one of the most difficult branches of physics, and most undergraduates are not required to take any fluid dynamics classes. (I wish i had taken one in undergrad!) That's a very interesting question though. I would assume the vortexes would move at different speeds because the viscosity for the two fluid is different.
Physics Girl Yeah I was talking to my friend one time about how fluid dynamics, a seemingly important branch of physics, just doesn't seem to be required in undergrad or graduate school for physics. Engineers are the ones who take it. I'm still in undergrad (physics) perhaps I should consider it.
This would be a neat experiment.
I'm not fluid dynamics expert at all, but I can imagine that if the two fluids are at rest and that you're simply moving the ring as you've described, there would be a difference in the vortex speed, but the resulting difference may skew the ring out into a line, and possibly rotate it completely and repeat. I'm thinking of a ring forming into a line, then forming into a ring again, etc. and that's because there is no net external torque, so angular momentum is conserved, thus if the system rotates partially, it must rotate completely to conserve momentum. I think the reason we have a half ring in the video is because of the extreme case, where the bound viscosity difference is so much, that there is no angular velocity for the ring system itself, but given a critical viscosity ratio between the two liquids, there may be a case which the ring forms and reforms.
Not sure! Fascinating question though.
Приятно удивлён. Столько просмотров и физика, а не дурости.
Спасибо. По больше таких каналов .
Это не мой папа!
2014?! I only discovered this channel in the past couple years but she's been absolutely fantastic at this for the past... *mental processing* 7+ years?!
Freaking awesome channel and I'm really happy I subscribed.
that was beyond cool! in 2.5 minutes you expanded my knowledge of tiny vortices by thousand fold.
What if there was a decent sized hole in the plate. Would you get four?
+The Federal Farmer yup
Could they move independently, though ?
+Sunomis yup
yes you will get four if the plate would have two extra holes and the extreme holes will spin in the same direction and the middle ones would spin in other direction but the intresting part is the diameter of the vortex is independent of the diameter of the holes drilled on the plate it is completly a function of velocity with which the plate has been pushed
The Federal Farmer that propbly could happen
Sun. Home pool. Clearly England is just not meant to see this.
All Countries You Can Do Everybody Has A Pool Exept for me :(
England Is A Geography of The United Kingdom
You can do it in a bathtub with a smaller plate.
Redditor here! Well said m'lady! It is rare to find a maiden so well educated!
It is this concept (the vortex) which has allowed me to be the reigning Mountain Dew chugging champion at the local Renaissance Fair for the past 7 years. By creating a perfect vortex in your throat, the Mountain Dew can easily flow into your stomach without any air restriction. It's that easy!
- Trilby McTip, Redditor, Brony, Atheist, Mountain Dew Chugging Champion
Such a chauvinistic comment. I am sure she appreciates it.
I smell a Poe. Oh god I hope I smell a Poe...
***** It's a fucking trilby, get it right.
PrestigeWorldwide Butt it´s a felt baseballcap worn backwards.
LowFlyinGirl +1... - I'd go so far as to say "rare to see such a well educated youtube host" - gender has nothing to do with it. This show is incredible for a lot of factors. Host, content, delivery.
saudades de você.. torcendo por sua recuperação
Whoa, she just made a wormhole in a pool. That's rad!
Underrated channel. Subscribing!
Thanks!
It's probably underrated bcoz it's science I'm subbing too
Woah! That makes me wonder; if a dish-shaped solid were to “scoop” through a bit of our atmosphere from space, it might create a HALF RING TWISTER! And based on the inherent stability of the circular motion, the twister might go EXCESSIVELY FAR!!
Do you think that’s possible? Or would it have to be a more dense medium like the water?
What if black holes are just vortexs
Why not be the first person to go into black hole and see if your theory was right.
See my comment! Didn't even see yours! :D
Icepalm Hearthgold Yeah! Travel 33 or more light years!!! 🙍
I mean why not? They are said to be connected with other ones too, like a tunnel, right?
That's what I was thinking.
I’ve had this in my watch later list for months, I love it & thank you for making people love physics, it’s one of my favorite branches of science
That was soooooo awesome. Out of all your vids this one rocked.
I hated physics. The only thing that I liked about physics class was when it ended early. But this. I watched and the jaw dropped and I literally said out loud, "woah, cool" right before you said it in the video. So. Awesome.
I hate to break it to you, but this was a physics video. ;)
Physics Girl and it was waaaaay awesome xD
FRUHD I think what you are refering to.. is boring teachers who probably hate their job and aren't very good at connecting with the brains of their students.. they make science boring.. but then you look at Vsauce and shit.. and young people are very interested in science, but only if they have a reason to be interested.. otherwise it's boring. (A lot of science teachers aren't even scientist, they just read from books and stuff, and the ones who are scientist.. don't get paid as much as they should, and they get payed the same as the other teachers when they're the ones missing out on money to educate kids).
It's summer. what am I doing here😭 I can't stop watching
I know right?!?! she's smart and awesome
+Evvy SoccerSinger same
صباحالخيرالليكانمنالمقررعقدهمعبعضالأحيانتطل
durka durka to you too
meadow boyd 😂😂😂😂😂
Awesome! :D
Siiiimp
method of explanation is so good.
I've just discovered you through reddit. How do I not know about this channel yet? You're one of the best teachers I've seen and I've had some amazing ones.
Get well soon
You can do this at home in a cup of tea \ coffee etc (if its a big enough one) using your spoon in replacement of the plate. I actually have wondered about this a lot since the vortices are so stable, it is a lot of fun! Thanks for the great explanation, and a shout-out to #pbsspacetime for getting me here :P
The thumbnail looks like squidward
Great video! I've observed this phenomenon for years but never found an explanation. And most important: it's fun to try it.
This is my favorite video of yours and the reason I subscribed a while ago. It came up again in my recommendations so I thought I'd watch it again. 😃
what kind of person dislikes a video like this?
A jealous person, that accomplishes nothing
The Anti-Vortex Lobby
@@reinforcedpenisstem Big Vortex
Sexist males
Jealous females
Random thots...
Gays
@@ryzerred761 gays?
its like a worm hole in space connected to each other
And maybe related to quantum entanglement also.
Maybe space and time are like two different medium, and we're just clinging to the skin between them (spacetime)
@@theAntiCauliflower maybe there would be just a “time” universe, or just a “space” universe!
@@bennybooboobear3940 Ooh that's an interesting idea! I can't even wrap my mind around a universe without both of those things existing, and whether its possible life could exist in either one of those universes..
Space time brought me here ^_^ Anyway is this the same what happens in a typhoon?
Reality brought me here
I brought me here
if you want to see the whole ring in using two different mediums ( water and air) try using something a bit closer to the density of water, like oil, so you have water and oil, the whole ring should be there in the water and air but since food coloring cannot float in air you are unable to see it. so by using oil which is closer to water the food coloring should show the entire ring
They look like two black holes connected with a wormhole...! (I wonder if there would be any connection).The demonstration of matter exchange between the two vortices was amazing !
You didn't mention one cool thing: If you cut the vortex in the middle with the plate, they dissipate immediately.
Also, would this be analogous to entanglement?
They Decenegrated Whey The Pole Cuts It Half
It’s not a wave… it’s a pair of entangled particles.
awesome video! :D
I totally just tried this with my kids and it was awesome!!!! They loved it!
Her passion for Physics just doesn't stop fascinating me, though I don't understand at times.
Man, if i die and see God. I'd ask him why quantum mechanics and why turbulence. These 2 are killers.
What makes you think that bronze age construct would know anything about the subject?
But what will you do if you don't see God
Quantum entanglement is probably the weirdest
Allen Don’t be religious
I'm optimistic about getting an answer to the former.
Can we make a connection of wormhole with this?
Apparently until it contacts a boundary of a different medium, water through water, air through air, space through space. I think space is where the greatest potential is and the question is how exactly to create the vortex. I think the answer can be seen in Giza but I don't know if it can be understood exactly. It seems to work as the electron transfer chain in our mitochondria most apparently with the slabs above the King's chamber resonating as the enzymes that attract the electrons in our cells. It may sound crazy but I am pretty sure it's correct.
Gerard Sanford what
i think we cant create them, i think they had to be made with the the big bang since you need that movement at the beginning? i dont know haha
I prefer to just think if it as magic.
!
Yep_ ))
I didnt knew about these two half vortex in water created by plate. Thanks for sharing these awesome phenomenon of nature...👍👍
Glad to see that this cahnel is growing so fast. Good job, Physics girl!
So cool so cool SO COOL can u say anything else 😂
So awesome
now, make a worm hole and I'll be really impressed :)
The inventor, math prof RM Keihn, called these Cosmic Strings ...and published his swimmingpool photos in arxiv General Relativity and QM Cosmology. arxiv.org/abs/gr-qc/0101098
wbeaty
Thanks Will, I don't understand the math of these Falaco Soliton, could you tell me if they can be called soliton if they are not a wave?
Well you tell how it formed but not why it lasts so long and the main reason you didn't, is because mainstram science cannot admit the natureal laws, because they would reset the matrix.
May I just say that you are one of the very few people that speak publicly that ACTUALLY USE the correct plural words!
I think this may also be this vortex, but I'm not certain.
I moved my spoon through my coffee this morning, where the rounded side was going against the water, and two vortexes formed on either side. They of course didn't last, but that's really cool!
Maybe this is how to create a Worm Hole in outer space? The dark circles remind me of Black Holes in space.
Intelligent and beautiful, Men are doomed.
Suddenly all women are like this apparently.
Really? With women like this i could talk about physics without feel like a freak.
You're one of the coolest channels on YT 💯 ty for existing lol 🙏
i have an irrational fear of whirlpools, so this entire video had my spine crawling, but it was still really cool
Just saw you on Seeker talking about Nuclear Energy and decide to check out your channel and this is the first video I watched. I'm hooked. Can't wait to watch more.
I wish I'd seen this a long time ago as I have a smiliar experiment but using iron oxide magnetic salts with a spoon in a coffee jar!!! Thanks for the clarity