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Fun fact, this is actually why chickens have giblets! It's a corruption of the old English word for cups, goblet, referring to the little bowl chickems keep in their internal cavity. This is one of those interesting linguistic facts I just made up entirely
I almost choked on my breakfast at “unless… you’re also 2D… and you’re coplanar with it”. The hesitations were crucial, as if he knew just how dumb an edge case he was about to describe.
This reminds me of the young adult Sci-Fi series by Timothy Zahn, 'Dragon and Thief' was the first one. The dragons can go from a full 3D in the world existence into a 2D form on the body of a host looking like a giant tattoo. It's an absolutely wonderful series, I still reread it regularly and I'm well into my 30s.
I've often seen chicken with those little cups, and wondered: why are they all carrying those around, and what are they for? Know I know! Thanks, Steve!
If I had a dollar for every time Steve recreated hydrodynamic mechanisms in 2D, I would not know how many dollars I'd have because I haven't been keeping track. But it would be enough dollars to where this joke would be appropriate.
@@jckf-- A live wallpaper of this would be amazing. I don't think 2D fluid simulations are too taxing nowadays, so a custom simulation of whatever shape, colour, flow rate, or viscosity you like shouldn't be too hard.
@TlalocTemporal You can probably setup something fairly optimised using nvidia flex or nvidia physx, or one of the many fairly optimised fluid physics libraries that exist in pretty much every language. (If you are feeling real crazy, you could try make a fluid simulator yourself. There are a lot of tutorials on the internet.)
@@coolkattcoder -- I've seen a dozen particle sim apps from a decade ago that ran on dirt pressed into a phone shape, so even mentioning a GPU is probably overkill for a few thousand particles. Battery drain on a laptop is what I'd mainly be worried about anyway. I wonder how Wallpaper Engine deals with live wallpapers, and how customisable you can get. If you could get the fluid sim working, adding reaction to the mouse would be cool.
I had to rewatch it twice because i couldn't stop thinking about how hard cleaning those magic goblets had to be and how disgusting they must get on the inside
It was sold as a magic trick rather than an item of drinking ware, but it wouldn't surprise me if kids used it for the latter. Probably have strong immune systems now 😂
The fact of using the trace efect to get the streamlines (in real life) rivals the time you used aliasing to be able to "record gravitational waves" (in your elastic model). You are an artist
Your videos seem to be the only ones where I find myself trying to like the video twice, once early on in the video because of some early explanation, and then later again because of the followups. Great video as always! I loved the effect of the water draining and refilling with the echo effect. Great visual aid
6:24 Seeing how the beads move reminds me of the Feynman sprinkler problem. The beads can be used to demonstrate the difference in direction and force between sucking in and blowing out water.
Steve Mould I never comment on anything on RUclips but I want to let you know that you have saved me years of anguish with this video. Ive been in wars in my head for years about whether this cup exists. I told friends, family and my mum who showed me the cup when I was little( she didn't remember it) and no one knew what I was talking about. I spent the last few years thinking it didn't exist at all, I've done search after search looking for this, searching things like "harry potter self filling cup" and whatnot and never found anything. You today have proven I am not insane. Thankyou Steve Mould I will be subscribed to you forever and always.
Here's a fluid dynamics question i had for years and never found a proper answer for, i dont think there's any videos on it either There's the thing you can do with bottles or jars to clean them, you partially fill them with water, then close them and shake. The question now is, how much water do you need to put in for the best cleaning effect? If it's too little, then the water doesnt have enough weight for a proper "impact", and if its too full then you cant build up enough speed for it to clean. What's the optimal volume for the best cleaning effect, and does it depend on the shape of the container? What other ways are there to increase the efficiency of that method? Of all youtube channels i watch I cant imagine any other being more suitable for this kind of question.
> What other ways are there to increase the efficiency of that method? if the bottle are long and have bigger base vs top: tilt ~30 to 45 degrees (depends on bottle shape) and rather than shaking it you spin it around and make use of both centrifugal force and leverage. since most gunk and residue are collected at the base of the bottle, which now are further away from center of rotation, the centrifugal force applied to them got amplified. It work best if the bottom of the bottle is concave instead of flat It will be harder to do with jar because their base vs top ratio are almost 1:1. You can close it, wrap the neck with strong rope, let it dangle and then spin it till the rope and jar is angled (similar to how centrifuge works in chemistry). But this usually not as efficient since your knot will likely be off-center of the jar center of mass and center of rotation.
Wait, i just remembered simpler method I usually use with smaller jars. fill 1/4 with water, close it, position perpendicular to floor in front of us (with both hand grabbing the top and bottom part) then do circular motion to induce centrifugal force. It's actually work better with less water since too much water will cause it to just slosh around. You can "aim" at certain part by tilting either hand.
its about optimizing pressure and force. the more water there is, the more that the air inside cushions it before it hits the bottom. this is because the water more easily forms a seal and prevents the air from moving out of the way. with less water, no seal will form, but the water will still be pushed to the side by the air, causing it to slide more than impact. the optimal amount of water is proportional not to the size of the container, but to the square area of the plane perpendicular to the direction of motion of the water. the container can have a ridiculous volume, but so long as the axes you are not shaking through are small, then so will be the amount of water you can use. testing it myself, it seems to be about 3 inches of water.
@@bepamungkas The swirling method is actually how I start washing pots. I fill it 1/4 ish, then stir it fast enough that the water climbs up the sides and starts scrubbing it somewhat. Then my hand, then the sponge, etc.
I am absolutely flabbergasted at how effective that echo effect is for visualizing real time particle motion.. that is one of the coolest things I have seen in a long time, what a find!
That probably has to do with boundary layer stuff, but if you look closely towards the end of the draining (easier to see without the echo effect) you can spot that it still forms a little whirlpool, that might have something to do with what we see. On further thought, we see a larger amount of beads moving above the drain and staying there while the whirlpool forms, so it seems that it's in fact giving a little _less_ priority to the water directly above the drain. On further further thought, I may have completely misinterpreted your comment, actually. In the video, Steve says he was asked if water drains from the top down or something like that, and I was thinking of that question as well while replying.
Auguamenti Edit: he uses it verbally in The Halfblood Prince to fill the crystal basin with water but couldn't collect the water with the cup(scoop) he had used when it was poison.
2:08 completely uncalled-for burn there! How much I play around with straws as a grown-ass man is my business and my business alone I'll have you know!
Alot of these principles help explain water distribution. Why water towers are so wide and squat for example helps keep the change in water level small and helps maintain constant pressure in pipes. Helps to visualize the change using a potential energy equation
One more thing. If you compare the water draining with flow of the sand in an hour glass, you might notice that the sand in the hour glass actually drains from the top. hence they have that conic slope on the top.
That water-draining effect is the same principal as the phone speaker blowing candles out. It sucks evenly but blows straight. I'd love to see that effect in a 2d work.
Steve, I don't know if anyone ever told you this, but for some reason I cannot help but appreciate you and the value you bring to all of us everywhere. You have an ability to really bring out interesting and fascinating things. The world would be a poor, poor place without you in it. You are a star. Your videos are excellent, and I get the feeling that you are too.😀
6:25 reminds me of air entering the back of a fan. I always used to wonder how a fan can produce so much positive air pressure at the front but almost no negative air pressure on the back, until I saw a video from "Matthias random stuff" (great channel) explaining how air enters the back from all directions evenly but exits in a straight column
I was thinking the same thing, but after checking he may be referring to the refilling charm harry uses on hagrid and slughorns drinks after the burial. That's the only instance I can think of in the book instead of the cave when he does try to refill the goblet with Aguamenti for Dumbledore.
6:30 In my perception, a 3d drain drags particles with increasing force related to the decrease in distance. Since angles are important in force transmissions and each particle has to push through a relative resistance a funnel shaped movement results, combining itself with the "coriolis principle" Ito a vortex (when disturbance is low enough) Hope this makes sense, since I am no professional! I just always loved to play with water, like creating vortexes with my hands or just watching it's reactions of flow to certain factors. :3
Well, that's what you got! No need to wonder. The beads hardly act on the water at all, so no worries there. As for turbulent flow, the water being poured in, right as it hits, (without double checking) I expect you would see some turbulent flow there.
This might even be my favourite video from you to date. From the delivery, humour, effects and science, it's all just perfection. Thank you Steve - love you long time.
Hey, kind of a stupid question, but on 2:30 you mention how surface tension plays a role on this effect. Does this mean liquids with less surface tension (such as ethanol) require smaller holes for this effect to work?
Those beads and the echo effect were so rad! I have only seen convection currents with dye, but those beads were such a neat take. Can you use those beads to do small explosion, like a very small firework or something that won't do a great deal above the water but might show some of the expansion and contraction that happens. If you could get (I think they are called) pistol shrimp to do there thing with those beads I would love to see it. O, idea, maybe you could see something sort of like the pistol shrimp snap with water hammer in a glass coke bottle if the bottle doesn't break. I think the mechanism is a bit different but I'm curious about seeing that vacuums rapid filling and whatnot. Anyway, love the stuff you make! Thanks!
The harry potter is no longer sold, probably because it can't be completely cleaned, and I can't imagine all the grime that can build up inside over time (especially with children's that will put anything into it). Btw the echo effect is a probably the coolest thing I have see so far.
6:24 This looks exactly like the pattern of airflow around the back of a floor fan; the side it's drawing air from. It's drawn from every possible direction and the part where the airflow can be felt is surprisingly small.
6:45 the funnel shape actually helps the volume above the funnel to retain it's overall distribution, and is how multi colored toothpaste keeps consistent stripes from beginning to end of the tube. Even a very shallow funnel slope can cause fluid before the funnel to move towards the drain in a laminar flow fashion.
Speaking of refilling charms... My boy Mould really going back to the ol assassin's teapot well hard here lol "Yes hello algorithm, I'll take a teapot tidal wave and a side of Harry Potter fans, thanks!" You do what you gotta do man, get some!
Just last night I was playing with one of those double sided colored oil/water clocks kid toys and was noticing how the bottom has three small openings so the oil can drop down the sides while the water pushes up the middle. If I collected a lot of the oil and put it to the bottom covering all 3 holes, you can see the water create a little tunnel and splits the oil in half as it rises. It was fun to watch.
The drain segment from 7:00 to 8:00 reminds me of how if a hole appears in a plane at altitude (or a space station) people far from the hole wouldn't even notice (other than the noise), as the velocity of the air is a function of the distance to the difference in pressure (the hole to the outside). I think this is a general thing too - differences in pressure in a common medium (air, water, whatever) quickly balance out with the nearest things moving most quickly to balance them, and again, this is kind of what does the damage in enormous bombs.
i didnt realise how grossed out i am at harry potter now. knowing JK is actively attacking a marginalised group just gives an ick to the entire franchise now.
That echo effect with the water beads looks so much like the effects from an old web game called "Powder Game" and a standalone simulation game known as "The Powder Toy"
I got one of these from my grandparents for my birthday when I was a kid. Used it in my magic act a few times in my schools talent shows. My grandad would perform card and other small magic tricks for all us grandkids which got me into magic. He passed away earlier in the year at the age of 94 and they're some of my favourite memories of him.
kinda wish we could collectively move on from HP given just how full of bigotries it is, and how it still makes money for an active and vocal transphobe (not to mention the other yikes folks that person funds and hangs out with)
Feels completely unnecessary honestly. Like she denies n4z1 crimes, there are probably other ways to make this exact video without bringing hp into it. It definitely distracts from the actual information he's trying to convey, which is bad if he's trying to educate.
You can actually feel the flow is exactly like this in 3D when you put your hand close to a drain filled with water in either bathtub or sink. Love the experience.
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Here before this blows up and first and 5th like
what's the song at the 7:00 minute mark?
@SteveMould video idea: 2d carburetor
@@ryzvonusef Baby Its You - Revel Day
@@FrontFacingBrian1234 Thank You!
"This is some Harry Potter merchandise that you can't get anymore, must be about twenty years old..." "...I cut one in half anyways" lol
I'm not even a HP fan but that made me furious lmao
@@GeneralPenemontoSeriously.
FOR SCIENCE!
I did think it might actually be worth something by now, and then he destroyed it. Expiriosa!
That bit filled me with joy
The smash cut at 3:59 away from the second "explanation" of how chickens drink really got me 😂
Of how "chickens" "drink"
same 🤣
It's the Benton Harbor effect
He was like "all right this bit is done" before it was
Steve was really a goofy goober in this video
I learned so much about chicken anatomy in this video.
I was just gonna come and say I learned so much about chickens today...
Fun fact, this is actually why chickens have giblets! It's a corruption of the old English word for cups, goblet, referring to the little bowl chickems keep in their internal cavity. This is one of those interesting linguistic facts I just made up entirely
@@TwoDementedGuys You mean their combs and wattles?
@@TwoDementedGuys lol! As someone who is interested in linguistics, you had me until the last line 😂😂😂
He just mentioned messing with a straw as a kid when this popped up for me.
I almost choked on my breakfast at “unless… you’re also 2D… and you’re coplanar with it”. The hesitations were crucial, as if he knew just how dumb an edge case he was about to describe.
@@TwisterTornado flatland?
@@TwisterTornado There's also "The Planiverse" by A.K. Dewdney. It's a very different take on what living in 2d might be like.
This reminds me of the young adult Sci-Fi series by Timothy Zahn, 'Dragon and Thief' was the first one.
The dragons can go from a full 3D in the world existence into a 2D form on the body of a host looking like a giant tattoo.
It's an absolutely wonderful series, I still reread it regularly and I'm well into my 30s.
As a 2 d man who was present at the demonstration all I can say is: "all I'm seeing is a bunch of lines moving up and down!"
edge case indeed
The echo effect basically lets us see the velocity vector of all the parts of water. So mesmerizing and neat!
And how it changes over time. That's really cool because normally we only get static visualizations of a vector field.
I like the fact that it demonstrated that some water drops down into the corners, and then "waits" until the "end" to drain out.
fun fact its just the previous frames being replayed at a lower opacity.
I need that song, though.
@@flowstategmng gotcha king. Baby it's you - Revel Day
I've often seen chicken with those little cups, and wondered: why are they all carrying those around, and what are they for? Know I know! Thanks, Steve!
As a chicken owner, it gets really expensive replacing them all the time, they're very bad at keeping a hold of them!
@capnprat7692 Have you tried giving them syringes? Maybe your chickens are able to keep their syringes better.
I thought they were little helmets.
"Know I know!"
I wish that you had wrote, "Know I now!".
Imagine my confusion when I read this comment before getting to the salient part of the video.
If I had a dollar for every time Steve recreated hydrodynamic mechanisms in 2D,
I would not know how many dollars I'd have because I haven't been keeping track.
But it would be enough dollars to where this joke would be appropriate.
Probably enough to buy a burrito
69
Well done sir, well done
I see what you didn't do there
You‘d have enough do do the joke a few more times
it's really time for Steve to open a museum of things cut in half, to put all the stuff he destroyed somewhere
He's doing 'what's inside' did, but with less hedonistic destruction
Heck, he should build two museums.
@@micahanglen4331On opposite sides of the same street
😂😂😂....
...stop it. He knows what he's doing.
The echo effect really made the difference. I’d love to see more with those neutrally buoyant particles
Just give me a loop of the convection one in a container that has a 16:9 aspect ratio so that I can have it as a wallpaper
@@jckf-- A live wallpaper of this would be amazing. I don't think 2D fluid simulations are too taxing nowadays, so a custom simulation of whatever shape, colour, flow rate, or viscosity you like shouldn't be too hard.
@TlalocTemporal You can probably setup something fairly optimised using nvidia flex or nvidia physx, or one of the many fairly optimised fluid physics libraries that exist in pretty much every language. (If you are feeling real crazy, you could try make a fluid simulator yourself. There are a lot of tutorials on the internet.)
It makes me think of the little magic worm things from the beginning of James and the Giant Peach
@@coolkattcoder -- I've seen a dozen particle sim apps from a decade ago that ran on dirt pressed into a phone shape, so even mentioning a GPU is probably overkill for a few thousand particles. Battery drain on a laptop is what I'd mainly be worried about anyway.
I wonder how Wallpaper Engine deals with live wallpapers, and how customisable you can get. If you could get the fluid sim working, adding reaction to the mouse would be cool.
From 7:04-7:30 and 7:32-7:41 song: “Baby It’s You” by artist: Revel Day, for anyone that’s wondering. Outro song: “Strut Funk” by Dougie Wood.
bless!
Thanks lol. Knew the comments had the answer to my thought
At last, this outro song is identified ! Thanks a lot.
I had to rewatch it twice because i couldn't stop thinking about how hard cleaning those magic goblets had to be and how disgusting they must get on the inside
that occurred to me too, probably why they arent for sale anymore if i had to guess
@@nickolaswilcox425 yeah, It would basically have to be water only and only for party tricks and not drinking
@@voidmayonnaise You're not tasting the chocolate milk, you're tasting the mould.
Fungi Sporatum!
It was sold as a magic trick rather than an item of drinking ware, but it wouldn't surprise me if kids used it for the latter. Probably have strong immune systems now 😂
#7:02 Amazing that a simple video effect can turn a picture of a scalar field into a vector field!
Yes, but also kind of obvious intuitively because it's enabling visualisation of the time dimension
The fact of using the trace efect to get the streamlines (in real life) rivals the time you used aliasing to be able to "record gravitational waves" (in your elastic model). You are an artist
the echo effect with the glowing particles at the end looks soo starry night, never cease to amaze us, never stop, you the best in what you do
actual comedy genius 2:57
I will now imagine chickens holding tiny cups
3:50 I'm learning so much about how chickens work 😂
Combine the little cup and the little arms that some people put on them
The echo effect showing flow in a liquid is really a hidden gem in this video. Glad I watched the whole thing; that almost deserves its own video
Your videos seem to be the only ones where I find myself trying to like the video twice, once early on in the video because of some early explanation, and then later again because of the followups.
Great video as always! I loved the effect of the water draining and refilling with the echo effect. Great visual aid
Steve is such a video editing genius. I dont know what I liked more: the science, the chicken jokes or the sexy laser cutter
That premiere pro echo effect is darned cool!
Human crowd movement with the echo effect?
Might see reoccurring patterns in human foot traffic behaviour, could be interesting?
The sidebars into chicken drinking anatomy really showcase Steve's slow descent into madness, and I'm all for it.
6:24 Seeing how the beads move reminds me of the Feynman sprinkler problem. The beads can be used to demonstrate the difference in direction and force between sucking in and blowing out water.
Steve Mould I never comment on anything on RUclips but I want to let you know that you have saved me years of anguish with this video. Ive been in wars in my head for years about whether this cup exists. I told friends, family and my mum who showed me the cup when I was little( she didn't remember it) and no one knew what I was talking about. I spent the last few years thinking it didn't exist at all, I've done search after search looking for this, searching things like "harry potter self filling cup" and whatnot and never found anything. You today have proven I am not insane. Thankyou Steve Mould I will be subscribed to you forever and always.
And yet, now there is one less of them in the world...
Here's a fluid dynamics question i had for years and never found a proper answer for, i dont think there's any videos on it either
There's the thing you can do with bottles or jars to clean them, you partially fill them with water, then close them and shake. The question now is, how much water do you need to put in for the best cleaning effect? If it's too little, then the water doesnt have enough weight for a proper "impact", and if its too full then you cant build up enough speed for it to clean. What's the optimal volume for the best cleaning effect, and does it depend on the shape of the container? What other ways are there to increase the efficiency of that method?
Of all youtube channels i watch I cant imagine any other being more suitable for this kind of question.
> What other ways are there to increase the efficiency of that method?
if the bottle are long and have bigger base vs top: tilt ~30 to 45 degrees (depends on bottle shape) and rather than shaking it you spin it around and make use of both centrifugal force and leverage. since most gunk and residue are collected at the base of the bottle, which now are further away from center of rotation, the centrifugal force applied to them got amplified. It work best if the bottom of the bottle is concave instead of flat
It will be harder to do with jar because their base vs top ratio are almost 1:1. You can close it, wrap the neck with strong rope, let it dangle and then spin it till the rope and jar is angled (similar to how centrifuge works in chemistry).
But this usually not as efficient since your knot will likely be off-center of the jar center of mass and center of rotation.
Wait, i just remembered simpler method I usually use with smaller jars. fill 1/4 with water, close it, position perpendicular to floor in front of us (with both hand grabbing the top and bottom part) then do circular motion to induce centrifugal force. It's actually work better with less water since too much water will cause it to just slosh around. You can "aim" at certain part by tilting either hand.
its about optimizing pressure and force. the more water there is, the more that the air inside cushions it before it hits the bottom. this is because the water more easily forms a seal and prevents the air from moving out of the way. with less water, no seal will form, but the water will still be pushed to the side by the air, causing it to slide more than impact.
the optimal amount of water is proportional not to the size of the container, but to the square area of the plane perpendicular to the direction of motion of the water. the container can have a ridiculous volume, but so long as the axes you are not shaking through are small, then so will be the amount of water you can use.
testing it myself, it seems to be about 3 inches of water.
@@bepamungkas The swirling method is actually how I start washing pots. I fill it 1/4 ish, then stir it fast enough that the water climbs up the sides and starts scrubbing it somewhat. Then my hand, then the sponge, etc.
that goblet would be impossible to clean
yeah, i am guessing that is why it was discontinued.
What if you fill it with soapy water and pinched the holes while you swirl it around (and maybe use something to cover the top) ?
If it could be separated in 2 parts, no problem.
You just have to clean it with magic
@@eduardosuela7291 good news lol
I am absolutely flabbergasted at how effective that echo effect is for visualizing real time particle motion.. that is one of the coolest things I have seen in a long time, what a find!
This is an intentionally one of the best videos I have seen about boundary layers
Do...do you mean unintentionally? 😅
That Echo is a cool effect Would be awesome to see dyed iron fillings thrown at a magnet
So for your water draining question, I notice it's giving a little more priority to directly above the drain than to the sides of it
That probably has to do with boundary layer stuff, but if you look closely towards the end of the draining (easier to see without the echo effect) you can spot that it still forms a little whirlpool, that might have something to do with what we see.
On further thought, we see a larger amount of beads moving above the drain and staying there while the whirlpool forms, so it seems that it's in fact giving a little _less_ priority to the water directly above the drain.
On further further thought, I may have completely misinterpreted your comment, actually. In the video, Steve says he was asked if water drains from the top down or something like that, and I was thinking of that question as well while replying.
3:50 love this type of joke with you trailing off so funny
7:50 Van Gogh🖤
For real though, I think you could publish some of these results. Your ability to visualize flow is very cool.
I think publishing things on RUclips can also get recognition
for sure he's developing lots of little curiosities for more people to explore!! 🐣
Auguamenti
Edit: he uses it verbally in The Halfblood Prince to fill the crystal basin with water but couldn't collect the water with the cup(scoop) he had used when it was poison.
2:08 completely uncalled-for burn there! How much I play around with straws as a grown-ass man is my business and my business alone I'll have you know!
I eagerly await more wizard content from Mould the Warlock
Whose patron is what entity again?
Ah yes, Newton with his three laws.
Alot of these principles help explain water distribution. Why water towers are so wide and squat for example helps keep the change in water level small and helps maintain constant pressure in pipes. Helps to visualize the change using a potential energy equation
One more thing. If you compare the water draining with flow of the sand in an hour glass, you might notice that the sand in the hour glass actually drains from the top. hence they have that conic slope on the top.
I only watch videos about Harry Potter and fluid dynamics so this is right up my Diagon Alley.
7:20 the water is rizzing up us 😂
What…
The echo effect is amazing! I could watch that all day🤯
7:10 that immediately makes me think of spaghettification. It looks so cool
I reckon you love magic, Steve. And Harry Potter.
6:55 I could watch this all day
That water-draining effect is the same principal as the phone speaker blowing candles out. It sucks evenly but blows straight. I'd love to see that effect in a 2d work.
As a chicken, I can confirm Steve is completely right.
Steve, I don't know if anyone ever told you this, but for some reason I cannot help but appreciate you and the value you bring to all of us everywhere. You have an ability to really bring out interesting and fascinating things. The world would be a poor, poor place without you in it. You are a star. Your videos are excellent, and I get the feeling that you are too.😀
6:25 reminds me of air entering the back of a fan. I always used to wonder how a fan can produce so much positive air pressure at the front but almost no negative air pressure on the back, until I saw a video from "Matthias random stuff" (great channel) explaining how air enters the back from all directions evenly but exits in a straight column
Used to have this thing as a kid :) loved it
0:01 Shadow wizard money gang.
"Harry Potter Goblet and the Assassin's teapot" is one of lesser known books
As a 2 dimensional being who's always coplanar with your example mechanisms, I learned nothing.
8:03 Why is he crying during the video 😅😂
5:04 - Ah, I see you went to the Techmoan school of audio editing.
Not sure what version Steve was watching but Harry 100% uses the incantation for Aguamenti in HBP.
not in the book.
I was thinking the same thing, but after checking he may be referring to the refilling charm harry uses on hagrid and slughorns drinks after the burial. That's the only instance I can think of in the book instead of the cave when he does try to refill the goblet with Aguamenti for Dumbledore.
You had a lot of fun with this one, makes for an awesome video. Dang ol chicken syringes
I guess they're trying to break the turkey baster monopoly.
6:30 In my perception, a 3d drain drags particles with increasing force related to the decrease in distance.
Since angles are important in force transmissions and each particle has to push through a relative resistance a funnel shaped movement results, combining itself with the "coriolis principle" Ito a vortex (when disturbance is low enough)
Hope this makes sense, since I am no professional!
I just always loved to play with water, like creating vortexes with my hands or just watching it's reactions of flow to certain factors. :3
The water creating charm in Harry Potter is Aguamenti
It would be cool to see laminar flow with the echo effect, if it's even possible to have laminar flow with beads in the water
Well, that's what you got! No need to wonder. The beads hardly act on the water at all, so no worries there.
As for turbulent flow, the water being poured in, right as it hits, (without double checking) I expect you would see some turbulent flow there.
I had that goblet as a child. Nostalgia overload.
Steve Mould is getting daddier with every passing day
This might even be my favourite video from you to date. From the delivery, humour, effects and science, it's all just perfection. Thank you Steve - love you long time.
7:25 That bitrate drop 😅 I'm sure before youtube it looks a lot better!
Cutting that cup in half is cruelty
Hey, kind of a stupid question, but on 2:30 you mention how surface tension plays a role on this effect. Does this mean liquids with less surface tension (such as ethanol) require smaller holes for this effect to work?
The echo shot is amazing! Also, congrats on the laser cutter, here’s to many more cool videos to come!
3:41 VENTUS **wow**
Those beads and the echo effect were so rad! I have only seen convection currents with dye, but those beads were such a neat take. Can you use those beads to do small explosion, like a very small firework or something that won't do a great deal above the water but might show some of the expansion and contraction that happens. If you could get (I think they are called) pistol shrimp to do there thing with those beads I would love to see it. O, idea, maybe you could see something sort of like the pistol shrimp snap with water hammer in a glass coke bottle if the bottle doesn't break. I think the mechanism is a bit different but I'm curious about seeing that vacuums rapid filling and whatnot. Anyway, love the stuff you make! Thanks!
Hope you’re well, Steve
7:55 looks a lot like starry night to me
the echo effect was really cool, especially when the top level of water seemed to want to swirl in the middle, even on a mostly 2d plane
The harry potter is no longer sold, probably because it can't be completely cleaned, and I can't imagine all the grime that can build up inside over time (especially with children's that will put anything into it). Btw the echo effect is a probably the coolest thing I have see so far.
The echo mode with the glowing balls is awesome. It's essentially making a vector graph for the entire body of water. Very cool!
I love the fact that we live in an era where adults now talk about Harry Potter stuff
6:24 This looks exactly like the pattern of airflow around the back of a floor fan; the side it's drawing air from. It's drawn from every possible direction and the part where the airflow can be felt is surprisingly small.
"the big news is, im a wizard now." best intro possible
6:45 the funnel shape actually helps the volume above the funnel to retain it's overall distribution, and is how multi colored toothpaste keeps consistent stripes from beginning to end of the tube.
Even a very shallow funnel slope can cause fluid before the funnel to move towards the drain in a laminar flow fashion.
Can it hold water from the Nile?
Speaking of refilling charms... My boy Mould really going back to the ol assassin's teapot well hard here lol "Yes hello algorithm, I'll take a teapot tidal wave and a side of Harry Potter fans, thanks!"
You do what you gotta do man, get some!
3:04 🤣🤣🤣🤣🤣
Just last night I was playing with one of those double sided colored oil/water clocks kid toys and was noticing how the bottom has three small openings so the oil can drop down the sides while the water pushes up the middle. If I collected a lot of the oil and put it to the bottom covering all 3 holes, you can see the water create a little tunnel and splits the oil in half as it rises. It was fun to watch.
Water from the Nile
Nile water.
Heh.
Not a machine but your mechanism you brought up reminds me of the human knee locking
I am deeply hostile to using rowling in any manner for actual science or in fact anything non-evil.
The drain segment from 7:00 to 8:00 reminds me of how if a hole appears in a plane at altitude (or a space station) people far from the hole wouldn't even notice (other than the noise), as the velocity of the air is a function of the distance to the difference in pressure (the hole to the outside). I think this is a general thing too - differences in pressure in a common medium (air, water, whatever) quickly balance out with the nearest things moving most quickly to balance them, and again, this is kind of what does the damage in enormous bombs.
i didnt realise how grossed out i am at harry potter now. knowing JK is actively attacking a marginalised group just gives an ick to the entire franchise now.
lmfao
One of oh so many things I've been boycotting for years. Having no acquaintances or hobbies has helped that greatly, but things get boring real fast.
That echo effect with the water beads looks so much like the effects from an old web game called "Powder Game" and a standalone simulation game known as "The Powder Toy"
"Expecto transphobia" -JK Rowling
I love the way the currents of water being poured into and emptying out of the 2d chamber looks like van Gogh's Starry Night
Ew, Harry Potter.
I got one of these from my grandparents for my birthday when I was a kid. Used it in my magic act a few times in my schools talent shows. My grandad would perform card and other small magic tricks for all us grandkids which got me into magic. He passed away earlier in the year at the age of 94 and they're some of my favourite memories of him.
Very unfortunate thumbnail
The Echo footage was awesome
Truly, it was amazing to see the pathways of liquid vortices as they we're filled and drained
I get that you want to talk about science but we have to stop giving this woman social relevance. Reconsider your choices. Bye
🤣
The editing is SO on-point! All throughout, but especially @7:04
kinda wish we could collectively move on from HP given just how full of bigotries it is, and how it still makes money for an active and vocal transphobe (not to mention the other yikes folks that person funds and hangs out with)
Yeah... I can't really even like the video in good conscience... so much pain and suffering connected to it
Feels completely unnecessary honestly. Like she denies n4z1 crimes, there are probably other ways to make this exact video without bringing hp into it. It definitely distracts from the actual information he's trying to convey, which is bad if he's trying to educate.
I love when creators use good music. Nice little level up of your quality there, Steve.
What's the song?
This video is an absolute banger in so many ways
You can actually feel the flow is exactly like this in 3D when you put your hand close to a drain filled with water in either bathtub or sink.
Love the experience.
*Shows cool piece of Merchandise that has been discontinued for years*
Steve: "... so anyways I cut it in half just to be sure"