This one was requested *a lot*. I hope it answers all your questions! It was great fun figuring it out. The sponsor is Jane Street. Take a look at the job opportunities they have: www.janestreet.com/join-jane-street/
Hey steve, just want to say stereograms are cool and all, but whats even cooler are youtube's 3d features and actually seeing the model in VR/AR. If you havent played with a VR headset yet but love 3D like I do, you're definitely missing out!!
As a peruvian i loved the fact that one ancient ítem from our past can still bring curiosity to a lot of people in other countries, and, to be honest i have always wondered how these work lol Love your videos, they are super interesting and fun.
I know how difficult making these transparent models can be after trying to put one together myself. Please continue doing what you do love your content
This is why I'm unsub and dislike the vid. He was stupid, X ray give him info and if you need bigger volume, then make a fucking cube 😒. It's handmade and probably a couple years old. I know that no one asked
FINALLY! I'm a ceramic artist and have been searching for references on how these are built. I've made singer whistles, ocarinas, and Aztec death whistles...now I'll build some of these. THANK YOU THANK YOU THANK YOU!!!🤘
@@Eidolon1andOnly The problem was the 2D version not having enough volume to replicate the required force to produce the whistle. He could've just extruded it and made the 2D version thicker, still flat and "2D" but wider
Dude, I grew up with 5 of these laying around in my house. Watching you holding one of my most precious belongings is just heartwarming. Greetings from Peru.
@@ameyabulakh3394 I mean it's fairly simple in principle, if you know how whistles work and know how water tension works then this is an easy concept to come up with, it's just combining those things to produce something really clever.
@@aurelia8028 Pottery that convincingly mimics bird song though? Modern bird whistles weren't invented until around the 17th century. We've had wind whistles since the Ancient Egyptians, but a water whistle that convincingly sounds like a bird?
I love the fact that the original and the cut in half version's tones are roughly an octave apart. That's what I would have guessed, but it's neat to hear it in a real physical form.
Perhaps Steve should see if someone could 3D-print things like these & although they may not be completely clear to see-through, even if they're semi-transparent you should be able to see any dark liquid inside them!
@@stevie-ray2020 I've seen some 3D prints from sanded resin turn out really clear, but obviously takes a lot more work and effort for nice transparency.
I was never able to whistle, I was watching this and thinking about the rounding where the air interlaps itself, I tried to shape my mouth, *and I was able to whistle for the first time in my life!*
@@hashfordalulz @W4iteFlame 7:04 You create the same geometry with your lower lip and lower teeth, and the air that you breathe will go into the gap and also over your lower teeth and "interrupt", making a whistling sound
Probably thousands of years of pottery makers just trying different shit until they landed on a design that yields something interesting, like this one.
Stirrup vessels are another type of interesting vessel from the region that could have been a place where acoustic properties of multi-chambered vessels was discovered. They are also highly unique and interesting in their own right definitely worth looking up
Being from Perú myself, this video was very very interesting. I owned one of those a while ago, but never truly knew how it worked, besides assuming it had a little whistle-like mechanism inside. Thanks for the video!
One option for this sort of thing is to get a full CT scan of the device (there are industrial CT scanning companies that do this). You can export the geometry as an STL and print it directly out of a clear material. Some SLA resins have very good optical properties and might work for your purpose here without having to reduce the geometry to 2D. I do think the 2D versions do help to make it easier to understand the concepts sometimes though.
As a guy that fixes various Xray stuff in the medical field I do many many 3D scans before I sign the equipment off to be used on people again. If you know a guy that does the same stuff I'm sure they would gladly take in whatever you want scanned to use as a phantom to prove accuracy of a system. That's what I do at least.
You could use a fluid with less surface tension next time when that's a problem. I found isopropyl worked way better than water when I was trying to print spirit levels the other week.
Great vid...another whistle that is cool af and has prehispanic origin is Aztec death whistles.When they are blown, they emit a frightening sound which resembles people screaming and suffering.There are others which sound like jaguars or birds...
I love this channel so much. Interesting and funny and just a really balanced, wholesome account. 5:55 is my favorite part though. “There is no escape. Only glugs,” but very quickly moving on just makes it so much better 😭💀 have learned a lot of wild things and uses for them from this channel. Love ya man, keep it up.
Thank you for the *cross-eyed* stereogram! I have one semi-lazy eye and I've never been able to see stereograms by the opposite method ("staring off into space"), so I could only guess at Magic Eye puzzles by working out the inverted version.
@@adrigax Yeah, if I relax my eyes to unalign them positively, I can sometimes get very brief convergence locks, but my bad eye tends to start drifting up and to the right, which ruins the alignment very quickly. I can get them to lock in vergence much better if I go cross-eyed, though - and the accommodation (focus) is better, maybe because I'm near-sighted in my bad eye.
Lol...I have amblyopia bilaterally, and there's really seldom any 3D for me. Crossing my eyes gives me two well separated images that do not mesh, and as for the staring off into space...well, no. Unusually though, both eyes have full function and while they can work together even whilst wandering (ex, I can watch the road and the rearview simultaneously), it's a conscious thing. And since using a smartphone, it makes typing accurately very difficult; the responsive bit for H, for instance, isn't quite where my finger thinks it is, so I get a lot of Js instead. Frustrating but fascinating!
@@RICDirector I've never really been sure if my effective depth perception and peripheral vision (enough to pass transient tests) are because I have partial correction from wearing a patch on my good eye for hours each day as a kid, or just a quirk of my particular amlbyopia. It does give me a good idea of which image in double-vision to treat as the "false" image, as the one from my bad eye is far more transparent, and gradually disappears if I keep my gaze fixed. I do still sometimes have to "cheat" on [DMV] vision chart tests if I don't have a valid opt*ist note on hand, but my peripheral vision and depth perception are relatively good for someone with 20/100 vision on one eye, when that eye also tends to fade to black in a strictly-static gaze over 15-30 seconds. ;D ... (that's a pun of an emoji) Edit: typos.
I have normal eyesight, as far as I know, and I've never had much luck with the "staring off into space" stereograms, yet the cross-eyed ones work just fine.
Seeing all the effort that you had to put in to crack acoustics of just one of these puts me in amazement and lots of respect about the intelligence of Peruvian ppl who crafted a customised toy whistle each for a typical sound in nature back then and how similar to it!! They probably had no high tech tools back then like now to assist them, just pure intelligence, craftsmanship and their love for perfection! Its unbelievable!!🙏
Video suggestion: Death whistles. They actually sounds like a demon screaming. The Aztecs invented them and used them for special ceremonies like Day Of The Dead. They also use them in war against other tribes. Not only that but they played hundreds of Death Whistles in war). The video where I learned about death whistles was from "Mileán Ó Raghallaigh" on youtube. I don't actually know much about them. But I'd like to see how they work in a 2D version
It might help to use a 3D printer to produce wider versions. The water-tightness isn't perfect, but should be good enough, and you can always coat the parts in epoxy resin to seal the small gaps, relying on silicone for the seal between the printed parts and the acrylic.
@@drnarwhal2888 Steve's done the modeling himself on his transparent version. Find a frame where it's mostly planar with the camera, take a screenshot, drag that into your CAD software of choice, trace the elements, extrude, job done.
Sound Wobble from the gluggs. Water shaking effects the air currents, and that shake pattern is based on the interior geometry. Edit: My hypothesis was correct
@@jeremy7707 It's mainly because of the name. It was named wrong by the people who first found it, and even though now that we know who actually made it, the name stuck. It's like Chinese water torture, which was actually an Italian invention.
Have you considered asking the craftspeople who make these whistles how they understand how it works? I always find its most informative to have the people who MAKE something to explain it.
@@MrTachyon actually one of those vessels sells for 90$ on online websites, that's around 350 soles which is almost a third of the minimum wage in Peru. That's pretty good businesss right there
@@MrTachyon who do you know they aren't selliing themselves, i know plenty of artisans who sell online outside Peru because this kind of crafts are very sought after outside the country
I seriously think Steve has one of the best educational channels, his stuff is always equally as entertaining as it is educational, and he doesn't even have to do anything super silly to keep it interesting, he's just that good at teaching
I thought I was literally the only one who could go crosseyed and match images like that. I do it all the time with recurring patterns like bathroom tile, curtains. I never thought about using it to simulate something in 3D like that though, that was really cool.
2:15 OMG STEVE THANK YOU SO MUCH!!! It's been so many years that I wished someone made use of this to show us some 3D, while we're waiting for all the expensive hardware to come down in price!!!
Actually it’s been used extensively in the past. There are artworks that have elements that can only be viewed stereoscopically and is the basis behind all of those magic eye gimmicks that was popular in the 80s and 90s. Additionally novelty devices called stereoscopes have been around since the late 1800s. They worked by having two photographs of the same image shot from slightly different angles placed inside and the user would then look through the viewfinder and see a 3D image.
You should take a trip to Peru and learn how to make these first hand. Then you can make and smash all the examples you want. Would make for a fun video series, especially if you used some less than useful methods for smashing them. Perhaps resorting to rapid hot disassembly.
If you want to see more of that use, I'd highly recommend searching for cross-eye stereograms. There are even paintings that reveal an image only when cross-eyed! If you can "de-focus" your eyes so they're parallel (sometimes called a thousand-yard stare), there are also stereograms for that. VR headsets do something similar too. The lenses redirect light so that you can view parallel-eye stereograms without de-focusing your eyes, and the screen displays a constantly-updating parallel-eye stereogram!
I found something curious. I am nearsighted so if I take my glasses off and de-focus my eyes I still see close things crystal clear (because my eye can't focus to distant things so it just gives up on it and stays in close focus). This way the image is so much bigger and much eaiser to focus. If I put my glasses on I can't do this since I become able to focus to the distance and the 3D picture becomes all blury. In the same way if I do it cross eyed without glasses for some reason I can't focus my eyes but glasses on cross eyeing it, it works perfectly.
@@mlatpren If this one at 2:16 is viewed wall-eyed (focus in parallel) instead of cross-eyed then it's still 3D, but rotating in the opposite direction!
I think that would have been a nice opportunity to support some traditional communities which are creating these things. I could imagine that quite a few people would want to buy these now from a legitimate source where the money ends up in a good place.
Incredible, the engineering behind it! Not only it makes wobbling whistle. But it’s closely replicated the chant of some known tropical bird! I can’t even start to imagine how one come up with inventing one of those! ?
If I understand this correctly, the key components for making sound of this are the size of the connecting pipe between the two water vessels and the shape of the whistle. It doesn't sound like the shape of the water vessels or precise shape of the pipe matter. Given that. To test your hypothesis. Instead of trying to recreate it in 2d or print the water vessels. Couldn't you just 3d print the whistle and attach it to 2 connected water vessels made of non-3d printed products. I would guess that you could create the same effect using pre made materials like bottles, jars, or pipes for the water vessel and connecting pipe. Which are materials you could probably get transparent versions of then drill, glue, etc together or fine pipe adapters. Then as a bonus you would potentially be able to swap in different sizes of connecting pipe, different printed whistle shapes, and different sizes of water vessels to test various hypothesis about what role the size of the connecting pipe, shape of the whistle, and size of the water vessels has on the whistle.
You are correct, the determinate factors are the inner diameter of the connection (and/or if IT contains any obstructions to impede flow), and the size of the whistle cavity does affect the pitch of the tone. But there is yet another subgroup to the equation, and that is the TYPE of whistle mechanism. Depending on the cultural time period a vessel (or modern reproduction of one) was made, the mechanism can be a globular whistle with a rounded aperture contained within the chamber (as was used in the parrot example), or a ducted aperture like you would see on a recorder (as in the "snoring man" example). This type of aperture is typically outside the vessel on or near the stirrup, or carrying handle. They each make their respective sounds in a different way.
@@Freestila So how I do it is relax my eyes and let them cross slightly. That will result in basically 2 sets of images each with a right and left video on them. Try to overlap the middle two video images (basically the left video in one with the right video in the other). It can be tricky so it might help to move your phone or laptop closer or farther away from you. But for me it generally quickly "pops" into a single 3 dimensional image that is moving and in focus. It's hard to describe but I hope this helps!!
@@Freestila I put my phone 15cm from my face and focus on something roughly 70cm in front of me. Merge the middle two of the four images in the middle, if you can do magic eye you can find it.
I have to say,these whistles must have high tech behind them originally, but enough of the knowledge survived through the passing down of the art for generations.I think those are so beautiful .
I have been fascinated by these and the Aztec screaming whistle since I was but a young buck. Awesome to see These topics covered by one of my favorite youtubers
I agree those stereograms are very useful! I use them to view protein structures and they are genuinely essential for me to understand how things are laid out in 3D.
2:21 Kinda hard to do the whole "3d trick" when I've only got one eye. Note: The previous sentence is an example of self-deprecating sarcasm. It was not and is not in any way, shape, or form intended to insult or otherwise verbally assault the creator of this video. Note 2: For anyone that's curious, I lost my left eye to meningitis when I was 5 months old. I didn't lose it to some wacko with a gun, or had it gouged out by a shard of glass in a car accident. Just plain old surgery to save a little baby's life, nothing special.
Great vid as always ! Many radiologists would be glad to try and do a full 3D CT scan of your suprising objects, so that you can fully appreciate their internal structure and 3D-print them. Well, I'd gladly do it if you happen to come by Paris 😁
Hi, thanks for the insightful info, really appreciate it. If you're interested in joining my Discord where we chat through ideas here's a one time link: discord.gg/P2QMZSsjhm
I wish that you had also bought the wolf one. It really does sound like a howling wolf when you tilt it. The whistle inside that one must be rather different than the other ones.
you know it says alot about how you break down a subject that i can still follow along just fine having been awake for four days. always found it frustrating when someone would profess themselves to be teaching something or explaining something and you never actually get the answers to the how because it often gets left in a very stock way of explaining something without every bothering to break down each functional variable. great work
Such a great channel. I'm a Mold maker, and as such I spend a lot of time thinking about negative space, surface tension, pressure and vacuum effects- these cross sections are always fascinating to me.
The cross-eyed thing is really cool. I've always had problems with double vision and using that disadvantage to view it in 3d is really amazing. Thanks for that!
That “stereogram” video was the coolest thing I’ve seen in a video, wow. It’s one thing to have a page in a book become 3D, but to have a video turn into a hologram was something else!
Here's a fun illusion: from 2:05 a for a while after, which way is the pot turning? left or right? Some people can even "decide" a direction and it'll look like the pot is turning the direction.
I saw an exhibit at the Science Museum in London that demonstrated this with a rotating cube. They tell you to close your eyes and look again a few times. Each time you look at it your brain chooses a direction to interpret it as moving. It is because of the ambiguity between which lines are in front and behind.
2:15 OMG, that was the first time I was able to see a stereogram! I could never see the magic eye things, and I tried for so, so long. It only took me about 15 or 20 seconds here and I was able to see this in 3d. It was so freaking awesome.
Lol, I had a similar story but the other way around. I remember watching these "fake 3D effect" videos and images that can trick your brain into thinking it's looking at a 3D image, by just crossing your eyes and focusing both images with each eye at the same time. But I didn't know it was called "stereogram". Also, to me I found quite difficult to recreate this stereogram, as the image was spinning around, and when it got to the back part of the whistle, my eyes just moved with it and lost the focus to the 3D image. I don't know if I explained myself correctly. English isn't my first language.
For future reference, waterjet abrasive tables can do curves just fine! I've used an Omax machine for years, making intricate, curvy cuts for in-house designed motorized satellite dishes.
@@seanbordenkircher7854 way easier to x-ray it. I'm a mechanical engineer who regularly works with this type of thing. It's a pita to figure that out for an existing object. The z axis stuff might have also had a tilt and it's just seriously unlikely to be worth it.
@@pmberkeley oh no, I agree, x-ray would be much easier, and non-destructive. I was simply responding to a point about waterjet tables that he seemed to misunderstand.
@@seanbordenkircher7854 he's somebody who uses those types of machines all the time. I interpreted it to be that he didn't know the exact internal axis and water gets are necessarily linear. By hand you can cut it however.
i literally just came across a video of a Peruvian man using these Whistling Vessels and was like "wow these are soo cool i wander how they work". And then i saw the first vid on the recommended tab was a Steve Mould vid explaining it ^-^. Thanks Steve
Holy crap, that stereogram thing TRIPPED ME OUT! I didn't know what to expect: I was moving my phone back and forth, in and out, in front of my face like madman when suddenly the 3d image just snapped into existence like a SHOCK, my phone disappeared and I was in a weird 3D VR brain mode. I mean, I think it was only shocking because I didn't know what to expect, but that was trippy!
2:40 that stereogram part was AWESOME. Always love those. If you don’t know how to view a stereogram, it’s totally worth searching UA-cam for a video on how to, because you can ACTUALLY trick your brain into seeing something in 3D when it’s actually just 2D. It’s pretty trippy.
@@SteveMould In the next video I attempt to use a Peruvian water whistle to hail a taxi in NYC. Coming later... One trick the whistle cartel doesn't want you to know! Love you Steve!
3:53 makes me wonder what a 4D whistle might be like. What would its properties even be? How might fluids flow in a 4D structure? Would it be possible to simulate the sounds it produces, and would those sounds even be the same in different 3D slices of 4D space?
You can really tell how connected to nature the people that made these were the human knowledge of the animal and its call combined with human ingenuity to reproduce to sounds with them jugs is just amazing to see and how delicate it looks with the x ray
You know something that your are my most favourite you tuber. I really get amazed and it's a fun to watch your videos. The amount of hard work you put is mind blowing. It's a deep request please continue this work always. 🙏😊
I came into this video expecting more of Steve’s signature transparent models of opaque things, but I was surprised that he added x-rays to the mix, and even stereoscopic images.
Its very interesting and quite impressive that despite being made by hand that so many effects can be balanced depending on the features of the HAND MADE pots. And they can't necessarily test it because it's clay pottery
This one was requested *a lot*. I hope it answers all your questions! It was great fun figuring it out.
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Thank you! This video is so cool
@@khalilahd. c0g
Amazing video thank you
Hey steve, just want to say stereograms are cool and all, but whats even cooler are youtube's 3d features and actually seeing the model in VR/AR. If you havent played with a VR headset yet but love 3D like I do, you're definitely missing out!!
Wow i love the stereogram
Problem is I watched that clip for 10 minutes on repeat and need time to reset my vision 😂
The “human whistle” definitely sounds like someone snoring, I could imagine the whistles being used in story telling
Kids listening to the story:
"HERE IT COMES!! THE PART WHEN THE PROTAGONIST SNORES!! "
"YEAH YEAH THE SNORING PART!!! "
It really does! I couldn't figure out how it sounded like a person until I read your comment, and then it was obvious.
That was exactly my thought too
It's a person whistling :3
Although I guess someone who doesn't blow much air xD
@@kakyoindonut3213 there's plenty of stories which involve characters falling asleep, there's no need to be sarcastic lmao
As a peruvian i loved the fact that one ancient ítem from our past can still bring curiosity to a lot of people in other countries, and, to be honest i have always wondered how these work lol
Love your videos, they are super interesting and fun.
I'm also peruvian and I agree with you.
How intelligent they were , interesting
I am peruvian... PERO HABLA EN ESPAÑOL PE CAUSA xd
@@panpollo3383 he wants that the creator can read his comment, so he write his comment in english.
Are you a real peruvian or mixed as hell
I know how difficult making these transparent models can be after trying to put one together myself. Please continue doing what you do love your content
being able to view it as a stereogram made me feel like a superhero ❤
Try making the real one
how'd it go?
This is why I'm unsub and dislike the vid. He was stupid, X ray give him info and if you need bigger volume, then make a fucking cube 😒. It's handmade and probably a couple years old.
I know that no one asked
do you?
FINALLY! I'm a ceramic artist and have been searching for references on how these are built. I've made singer whistles, ocarinas, and Aztec death whistles...now I'll build some of these. THANK YOU THANK YOU THANK YOU!!!🤘
Do you post them anywhere? Id love to see
I just learned to make a clay ocarina it was so fun
Oh shoot! Do you have a link to your stuff that you makes?
Hahahahahaha smart man
I would love to see a 3D CAD model of one for 3D printing.
Steve Mould: X-Ray images handcrafted whistles to prevent breaking it.
Also Steve Mould: Breaks it anyway
Just like Surgeons in any Hospital...
Exactly. Seems bizarre to me. Could have found another way to make a 3D transparent whistle.
@@Eidolon1andOnly The problem was the 2D version not having enough volume to replicate the required force to produce the whistle. He could've just extruded it and made the 2D version thicker, still flat and "2D" but wider
Why does it need to be '2d'? Could have just made the transparent version thicker and still see just as well through it.
Making things transparent and watertight in 3D is MUCH harder than making them in 2D.
Dude, I grew up with 5 of these laying around in my house. Watching you holding one of my most precious belongings is just heartwarming.
Greetings from Peru.
Did a quick search and these can date back to 500 BC..
Peruvian pottery makers were damn clever to make this back then.
That's pretty damn impressive.
pft. we have made pottery for like 10000 years
Wondering how they made it.
@@ameyabulakh3394 I mean it's fairly simple in principle, if you know how whistles work and know how water tension works then this is an easy concept to come up with, it's just combining those things to produce something really clever.
@@aurelia8028 Pottery that convincingly mimics bird song though? Modern bird whistles weren't invented until around the 17th century. We've had wind whistles since the Ancient Egyptians, but a water whistle that convincingly sounds like a bird?
"I don't want to break it in half because they're hand-made"
-cuts it in half still-
By hand
@@melodycaroline4520 still. people want to see the skeleton of the whistling vessel.
And the magic GLUE comes in and save the day ... and the whistle !
Lol
@@Taleton yeah because of a work of art that's been cut in half and glued back together is good as new right? lol
To finish your whistle research, you should look into how the Aztec death whistles sound so much like a scream.
A friend of mine told me to look it up and I did....but unfortunately at 3 AM. I was horrified for a week lol
Yes
Oh I definitely wanna see that
I 3d printed one, it is terrifying. They also make ones that sound like a jaguar and it is very convincing, artisans sell them in Mexico City.
@Sabizos what do you mean?
I love the fact that the original and the cut in half version's tones are roughly an octave apart. That's what I would have guessed, but it's neat to hear it in a real physical form.
Me : "Hey Good Idea, he will not destroy the vessel this times "
Steve, litteraly ten seconds after : "Here is the vessel cut in half by hand" !
You can still put it on a display, but you have only one side xD
You can display both sides at once now.
@@benwisey So, he actually made it better...?
Perhaps Steve should see if someone could 3D-print things like these & although they may not be completely clear to see-through, even if they're semi-transparent you should be able to see any dark liquid inside them!
@@stevie-ray2020 I've seen some 3D prints from sanded resin turn out really clear, but obviously takes a lot more work and effort for nice transparency.
I was never able to whistle, I was watching this and thinking about the rounding where the air interlaps itself, I tried to shape my mouth, *and I was able to whistle for the first time in my life!*
SAME. I JUST NOW TRIED IT
@@stevenlynch3456 Really? I don’t understand but I really want to be able to whistle!😢
I still don't understand how...
@@hashfordalulz @W4iteFlame 7:04 You create the same geometry with your lower lip and lower teeth, and the air that you breathe will go into the gap and also over your lower teeth and "interrupt", making a whistling sound
Reverse engineering is so cool, more fascinating is how such whistles were created in the first place🤯
I find that quite impressing too!
Probably thousands of years of pottery makers just trying different shit until they landed on a design that yields something interesting, like this one.
like low-key it kinda looks like someone was making 2 teapots stuck together
Stirrup vessels are another type of interesting vessel from the region that could have been a place where acoustic properties of multi-chambered vessels was discovered. They are also highly unique and interesting in their own right definitely worth looking up
Could have been much the same way as many fascinating inventions came to be. Quite by accident.
How can you see this in 3D?
The Peruvian potters have refined their craft to the point where they can imitate different birds! Phenomenal!
Being from Perú myself, this video was very very interesting. I owned one of those a while ago, but never truly knew how it worked, besides assuming it had a little whistle-like mechanism inside. Thanks for the video!
Como se chama esse objeto?
@@patymelo3238 Huacos
Steve: I won't smash this beautiful handcrafted thing
Also Steve: I'm gonna cut it in half by hand
Well he isn't smashing it
Because the X-ray image wasn’t helpful for Making the 2d version
There’s a dude in Peru who makes these, watching this video, saying to himself…. “Aye Dios! Dave you could have just asked me how it works!”
One option for this sort of thing is to get a full CT scan of the device (there are industrial CT scanning companies that do this). You can export the geometry as an STL and print it directly out of a clear material. Some SLA resins have very good optical properties and might work for your purpose here without having to reduce the geometry to 2D. I do think the 2D versions do help to make it easier to understand the concepts sometimes though.
As a guy that fixes various Xray stuff in the medical field I do many many 3D scans before I sign the equipment off to be used on people again. If you know a guy that does the same stuff I'm sure they would gladly take in whatever you want scanned to use as a phantom to prove accuracy of a system. That's what I do at least.
That would be pretty cool.
0:02 Please have this person consulting with a neurologist!! That hand shacking is not normal in people younger than 65!
You could use a fluid with less surface tension next time when that's a problem. I found isopropyl worked way better than water when I was trying to print spirit levels the other week.
That is literally why they're called "spirit" levels. You use "spirits" inside.
Bit of washing liquid.
Try mineral spirits. It flows so easily that a folded paper towel or rag like you would for other water-like chemicals just doesn't stop it.
@@eideticex But it would get dirty i think. And cleaning that seams very difficult.
@@tissuepaper9962 even just adding a small drop of dish detergent to the water will break the surface tension.
Great vid...another whistle that is cool af and has prehispanic origin is Aztec death whistles.When they are blown, they emit a frightening sound which resembles people screaming and suffering.There are others which sound like jaguars or birds...
I get the bird ones - but to have a vessel that resembles snoring sounds of a human is insane . 🤣🤣🤣 like the geometry & science behind it is amazing .
Those ppl that hand made these jar whistles….simply amazing.
I love this channel so much. Interesting and funny and just a really balanced, wholesome account. 5:55 is my favorite part though. “There is no escape. Only glugs,” but very quickly moving on just makes it so much better 😭💀 have learned a lot of wild things and uses for them from this channel. Love ya man, keep it up.
Thank you!
“There is no escape. Only glugs.”
If you made that a T-Shirt I’d buy it.
Thank you for the *cross-eyed* stereogram! I have one semi-lazy eye and I've never been able to see stereograms by the opposite method ("staring off into space"), so I could only guess at Magic Eye puzzles by working out the inverted version.
I can look at stereograma both ways and in this case, both work. But it makes the model turn the other way around.
@@adrigax Yeah, if I relax my eyes to unalign them positively, I can sometimes get very brief convergence locks, but my bad eye tends to start drifting up and to the right, which ruins the alignment very quickly. I can get them to lock in vergence much better if I go cross-eyed, though - and the accommodation (focus) is better, maybe because I'm near-sighted in my bad eye.
Lol...I have amblyopia bilaterally, and there's really seldom any 3D for me. Crossing my eyes gives me two well separated images that do not mesh, and as for the staring off into space...well, no.
Unusually though, both eyes have full function and while they can work together even whilst wandering (ex, I can watch the road and the rearview simultaneously), it's a conscious thing. And since using a smartphone, it makes typing accurately very difficult; the responsive bit for H, for instance, isn't quite where my finger thinks it is, so I get a lot of Js instead.
Frustrating but fascinating!
@@RICDirector I've never really been sure if my effective depth perception and peripheral vision (enough to pass transient tests) are because I have partial correction from wearing a patch on my good eye for hours each day as a kid, or just a quirk of my particular amlbyopia. It does give me a good idea of which image in double-vision to treat as the "false" image, as the one from my bad eye is far more transparent, and gradually disappears if I keep my gaze fixed. I do still sometimes have to "cheat" on [DMV] vision chart tests if I don't have a valid opt*ist note on hand, but my peripheral vision and depth perception are relatively good for someone with 20/100 vision on one eye, when that eye also tends to fade to black in a strictly-static gaze over 15-30 seconds. ;D ... (that's a pun of an emoji)
Edit: typos.
I have normal eyesight, as far as I know, and I've never had much luck with the "staring off into space" stereograms, yet the cross-eyed ones work just fine.
Seeing all the effort that you had to put in to crack acoustics of just one of these puts me in amazement and lots of respect about the intelligence of Peruvian ppl who crafted a customised toy whistle each for a typical sound in nature back then and how similar to it!! They probably had no high tech tools back then like now to assist them, just pure intelligence, craftsmanship and their love for perfection! Its unbelievable!!🙏
If you want something x-rayed, just take it to a local vet ( Yes I've done this)
Says the person who's had how many X-ray machines?
Do they happen to have a CAT scanner?
I'm Peruvian, I didn't even know these artifacts existed.
These are probably Caucasian in origin, not actually Peruvian.
Always happy to watch a new edition of the ongoing Saga of “Steve makes 2D water things”
Video suggestion: Death whistles. They actually sounds like a demon screaming. The Aztecs invented them and used them for special ceremonies like Day Of The Dead. They also use them in war against other tribes. Not only that but they played hundreds of Death Whistles in war). The video where I learned about death whistles was from "Mileán Ó Raghallaigh" on youtube. I don't actually know much about them. But I'd like to see how they work in a 2D version
It might help to use a 3D printer to produce wider versions. The water-tightness isn't perfect, but should be good enough, and you can always coat the parts in epoxy resin to seal the small gaps, relying on silicone for the seal between the printed parts and the acrylic.
I wish I could find a file to print one of these myself but as far as I can tell, nobody has made one yet.
@@drnarwhal2888 Steve's done the modeling himself on his transparent version. Find a frame where it's mostly planar with the camera, take a screenshot, drag that into your CAD software of choice, trace the elements, extrude, job done.
as soon as I read epoxy my mind jumped to the idea of a collaboration between steve and xyla foxlin
Sound Wobble from the gluggs. Water shaking effects the air currents, and that shake pattern is based on the interior geometry.
Edit: My hypothesis was correct
Do the Aztec Death Whistle next! That's a great whistle and something to make yourself some nightmare fuel, if you need it! 😉👍
Yes
Inca's made these whistles. Not the Aztecs
@@tracischmidt8593 Yeah they did. But most people don't really know the difference.
@@brandonnguyen6718 whole different country actually! i wish they did know the difference :/
@@jeremy7707 It's mainly because of the name. It was named wrong by the people who first found it, and even though now that we know who actually made it, the name stuck. It's like Chinese water torture, which was actually an Italian invention.
2:40 - The spinning ballerina illusion
Finally, my time as a middle schooler learning to cross my eyes at will is paying off!
Great video as always
Same!
"There is no escape, only glugs."
I like and no replies? Let me fix that
Have you considered asking the craftspeople who make these whistles how they understand how it works? I always find its most informative to have the people who MAKE something to explain it.
And paying them to make things fair.
@@MrTachyon actually one of those vessels sells for 90$ on online websites, that's around 350 soles which is almost a third of the minimum wage in Peru. That's pretty good businesss right there
@@Monki_29 Ah yes, the classic "exploitation is justified because its screwing them slightly less than their wrecked economies already do" mindset
@@Monki_29 ..The people reselling them get rich but the people who make them don’t get their fair share.
@@MrTachyon who do you know they aren't selliing themselves, i know plenty of artisans who sell online outside Peru because this kind of crafts are very sought after outside the country
Wouldn't contacting the people that created the whistles be easier?
I’ve never even seen something like this. So cool! I love that I never know what I’m going to learn about when you post but I’m never disappointed 😅🙏🏽
I seriously think Steve has one of the best educational channels, his stuff is always equally as entertaining as it is educational, and he doesn't even have to do anything super silly to keep it interesting, he's just that good at teaching
You are now becoming like the ray mak guy lmao. I see u everywhere.
I thought I was literally the only one who could go crosseyed and match images like that. I do it all the time with recurring patterns like bathroom tile, curtains. I never thought about using it to simulate something in 3D like that though, that was really cool.
As a Peruvian I clicked on the notification as soon as I read "Peruvian"
Hi Steve
Lmao same
Surprised that people came up with such an amazing device, imagine what a common person must have thought when hearing this back in the days
I love that transparent models are now the staple of this channel, keep up the good work
2:15 OMG STEVE THANK YOU SO MUCH!!! It's been so many years that I wished someone made use of this to show us some 3D, while we're waiting for all the expensive hardware to come down in price!!!
Actually it’s been used extensively in the past. There are artworks that have elements that can only be viewed stereoscopically and is the basis behind all of those magic eye gimmicks that was popular in the 80s and 90s. Additionally novelty devices called stereoscopes have been around since the late 1800s. They worked by having two photographs of the same image shot from slightly different angles placed inside and the user would then look through the viewfinder and see a 3D image.
@@joshs5577 I meant on YT 😅
@@cheaterman49 In that case do you remember the Google Cardboard. Same thing but with UA-cam.
Yo the rotating x-ray animation can be perceived as rotating in either direction. It's like the spinning dancer illusion.
I love how this has become the "transparent replica" channel. It's great and it cracks me up every time you do it.
If only Steve would start embracing the third dimension. An entire video of why a flat model didn't work, but no thought on making a wider one lol
You should take a trip to Peru and learn how to make these first hand. Then you can make and smash all the examples you want. Would make for a fun video series, especially if you used some less than useful methods for smashing them. Perhaps resorting to rapid hot disassembly.
The one at 0:17 woke up my sleeping cat and stopped the other dead in her tracks, so it’s gotta be bird-like enough to count for something
After watching this video, it's hard not to appreciate the crafts of these traditional inventors were genius in their respective work of art
2:16
I never knew being able to go crosseyed has such a use! That is so cool! I'm blown away that I can see it in 3D!
If you want to see more of that use, I'd highly recommend searching for cross-eye stereograms. There are even paintings that reveal an image only when cross-eyed!
If you can "de-focus" your eyes so they're parallel (sometimes called a thousand-yard stare), there are also stereograms for that.
VR headsets do something similar too. The lenses redirect light so that you can view parallel-eye stereograms without de-focusing your eyes, and the screen displays a constantly-updating parallel-eye stereogram!
@@mlatpren I first tried to do the thousand-yard stare and wasn't able to, then I realized we were supposed to go cross-eyed anyways. Pretty cool.
But the immediate cut to a singular image at 2:54, while going crosseyed, was totally irritating:(
I found something curious. I am nearsighted so if I take my glasses off and de-focus my eyes I still see close things crystal clear (because my eye can't focus to distant things so it just gives up on it and stays in close focus). This way the image is so much bigger and much eaiser to focus. If I put my glasses on I can't do this since I become able to focus to the distance and the 3D picture becomes all blury. In the same way if I do it cross eyed without glasses for some reason I can't focus my eyes but glasses on cross eyeing it, it works perfectly.
@@mlatpren If this one at 2:16 is viewed wall-eyed (focus in parallel) instead of cross-eyed then it's still 3D, but rotating in the opposite direction!
I think that would have been a nice opportunity to support some traditional communities which are creating these things. I could imagine that quite a few people would want to buy these now from a legitimate source where the money ends up in a good place.
Incredible, the engineering behind it! Not only it makes wobbling whistle. But it’s closely replicated the chant of some known tropical bird! I can’t even start to imagine how one come up with inventing one of those! ?
If I understand this correctly, the key components for making sound of this are the size of the connecting pipe between the two water vessels and the shape of the whistle. It doesn't sound like the shape of the water vessels or precise shape of the pipe matter. Given that. To test your hypothesis. Instead of trying to recreate it in 2d or print the water vessels. Couldn't you just 3d print the whistle and attach it to 2 connected water vessels made of non-3d printed products. I would guess that you could create the same effect using pre made materials like bottles, jars, or pipes for the water vessel and connecting pipe. Which are materials you could probably get transparent versions of then drill, glue, etc together or fine pipe adapters. Then as a bonus you would potentially be able to swap in different sizes of connecting pipe, different printed whistle shapes, and different sizes of water vessels to test various hypothesis about what role the size of the connecting pipe, shape of the whistle, and size of the water vessels has on the whistle.
You are correct, the determinate factors are the inner diameter of the connection (and/or if IT contains any obstructions to impede flow), and the size of the whistle cavity does affect the pitch of the tone. But there is yet another subgroup to the equation, and that is the TYPE of whistle mechanism. Depending on the cultural time period a vessel (or modern reproduction of one) was made, the mechanism can be a globular whistle with a rounded aperture contained within the chamber (as was used in the parrot example), or a ducted aperture like you would see on a recorder (as in the "snoring man" example). This type of aperture is typically outside the vessel on or near the stirrup, or carrying handle. They each make their respective sounds in a different way.
OMG, the stereogram works. This is why Steve's videos are so amazing, so many "wow" moments. Thank you for this!!
How did you do it? I can do magic eye pictures, but two videos? How should you do that?
@@Freestila So how I do it is relax my eyes and let them cross slightly. That will result in basically 2 sets of images each with a right and left video on them. Try to overlap the middle two video images (basically the left video in one with the right video in the other). It can be tricky so it might help to move your phone or laptop closer or farther away from you. But for me it generally quickly "pops" into a single 3 dimensional image that is moving and in focus. It's hard to describe but I hope this helps!!
@@Freestila I put my phone 15cm from my face and focus on something roughly 70cm in front of me. Merge the middle two of the four images in the middle, if you can do magic eye you can find it.
I have to say,these whistles must have high tech behind them originally, but enough of the knowledge survived through the passing down of the art for generations.I think those are so beautiful .
Smashing just felt wrong, so I cut it in half! Problem solved i guess?
I have been fascinated by these and the Aztec screaming whistle since I was but a young buck. Awesome to see These topics covered by one of my favorite youtubers
I agree those stereograms are very useful! I use them to view protein structures and they are genuinely essential for me to understand how things are laid out in 3D.
This ua-cam.com/video/gpLm695aeXM/v-deo.html
I recently learned how to see them and they're wonderful...
2:21 Kinda hard to do the whole "3d trick" when I've only got one eye.
Note: The previous sentence is an example of self-deprecating sarcasm. It was not and is not in any way, shape, or form intended to insult or otherwise verbally assault the creator of this video.
Note 2: For anyone that's curious, I lost my left eye to meningitis when I was 5 months old. I didn't lose it to some wacko with a gun, or had it gouged out by a shard of glass in a car accident. Just plain old surgery to save a little baby's life, nothing special.
My man just dropped the stereogram on us, like it was nothing. Blew my mind, it would be worth a video on its own!
After all that Steve STILL destroys his handmade whistle 😂😂
Great vid as always !
Many radiologists would be glad to try and do a full 3D CT scan of your suprising objects, so that you can fully appreciate their internal structure and 3D-print them. Well, I'd gladly do it if you happen to come by Paris 😁
Hi, thanks for the insightful info, really appreciate it. If you're interested in joining my Discord where we chat through ideas here's a one time link: discord.gg/P2QMZSsjhm
I never knew about these whistling jars. How neat! The ingenuity of the people who invented it is truly amazing.
I wish that you had also bought the wolf one. It really does sound like a howling wolf when you tilt it. The whistle inside that one must be rather different than the other ones.
Oh, where is that sold? I would love to have a howling wolf jug and support an artist
you know it says alot about how you break down a subject that i can still follow along just fine having been awake for four days.
always found it frustrating when someone would profess themselves to be teaching something or explaining something and you never actually get the answers to the how because it often gets left in a very stock way of explaining something without every bothering to break down each functional variable.
great work
Such a great channel. I'm a Mold maker, and as such I spend a lot of time thinking about negative space, surface tension, pressure and vacuum effects- these cross sections are always fascinating to me.
The Incas were highly intelligent people.
The cross-eyed thing is really cool. I've always had problems with double vision and using that disadvantage to view it in 3d is really amazing. Thanks for that!
That “stereogram” video was the coolest thing I’ve seen in a video, wow. It’s one thing to have a page in a book become 3D, but to have a video turn into a hologram was something else!
Here's a fun illusion:
from 2:05 a for a while after, which way is the pot turning? left or right?
Some people can even "decide" a direction and it'll look like the pot is turning the direction.
I saw an exhibit at the Science Museum in London that demonstrated this with a rotating cube. They tell you to close your eyes and look again a few times. Each time you look at it your brain chooses a direction to interpret it as moving. It is because of the ambiguity between which lines are in front and behind.
“There is no escape only gluggle” Truly masterful poetry
Me: goes into stereogram vision
Steve: goes back to regular video without warning
Me: 😵
These things are incredible!
Greetings from Peru! Love Steve's content. Keep it going!
I couldn't go cross eyed, but I could go like, half cross eyed, so I saw six images lmaooo
2:15 OMG, that was the first time I was able to see a stereogram! I could never see the magic eye things, and I tried for so, so long. It only took me about 15 or 20 seconds here and I was able to see this in 3d. It was so freaking awesome.
Lol, I had a similar story but the other way around.
I remember watching these "fake 3D effect" videos and images that can trick your brain into thinking it's looking at a 3D image, by just crossing your eyes and focusing both images with each eye at the same time.
But I didn't know it was called "stereogram". Also, to me I found quite difficult to recreate this stereogram, as the image was spinning around, and when it got to the back part of the whistle, my eyes just moved with it and lost the focus to the 3D image.
I don't know if I explained myself correctly. English isn't my first language.
For future reference, waterjet abrasive tables can do curves just fine! I've used an Omax machine for years, making intricate, curvy cuts for in-house designed motorized satellite dishes.
The issue is generating the proper curve, I think.
@@pmberkeley not necessarily, all you'd have to do is figure the rise and run and arc, plot your start, set up your material settings and blam.
@@seanbordenkircher7854 way easier to x-ray it.
I'm a mechanical engineer who regularly works with this type of thing. It's a pita to figure that out for an existing object. The z axis stuff might have also had a tilt and it's just seriously unlikely to be worth it.
@@pmberkeley oh no, I agree, x-ray would be much easier, and non-destructive. I was simply responding to a point about waterjet tables that he seemed to misunderstand.
@@seanbordenkircher7854 he's somebody who uses those types of machines all the time. I interpreted it to be that he didn't know the exact internal axis and water gets are necessarily linear. By hand you can cut it however.
I had a large grin on my face when you showed the 3d cross eyed thing. It was such a nice idea by combining that and an X-ray rotation.
i literally just came across a video of a Peruvian man using these Whistling Vessels and was like "wow these are soo cool i wander how they work". And then i saw the first vid on the recommended tab was a Steve Mould vid explaining it ^-^. Thanks Steve
Holy crap, that stereogram thing TRIPPED ME OUT! I didn't know what to expect: I was moving my phone back and forth, in and out, in front of my face like madman when suddenly the 3d image just snapped into existence like a SHOCK, my phone disappeared and I was in a weird 3D VR brain mode. I mean, I think it was only shocking because I didn't know what to expect, but that was trippy!
Cleaning these things must be such a pain
I became aware of these things about a day ago, and it made me intrigued into how they worked, so thank you so much for having made video about it.
I'm obsessed about this type of mechanisms because this channel
"i dont want to break it"
*proceeds to cut it in half
2:40 that stereogram part was AWESOME.
Always love those.
If you don’t know how to view a stereogram, it’s totally worth searching UA-cam for a video on how to, because you can ACTUALLY trick your brain into seeing something in 3D when it’s actually just 2D. It’s pretty trippy.
Ok Steve you can tell us the truth.
You're changing the name of the channel to: The amazing world of whistles with Steve Mould
It's inevitable at this point
@@SteveMould
In the next video I attempt to use a Peruvian water whistle to hail a taxi in NYC.
Coming later... One trick the whistle cartel doesn't want you to know!
Love you Steve!
Dude just revealed thousands of years of secrets like it was another Tuesday
3:53 makes me wonder what a 4D whistle might be like.
What would its properties even be? How might fluids flow in a 4D structure? Would it be possible to simulate the sounds it produces, and would those sounds even be the same in different 3D slices of 4D space?
I am from Perú, so to see a representation of my country in your channel really makes my day
Wow, that stereogram blew my mind! Keep up the great work man, love your videos!
Same, I was not ready for that
You can really tell how connected to nature the people that made these were the human knowledge of the animal and its call combined with human ingenuity to reproduce to sounds with them jugs is just amazing to see and how delicate it looks with the x ray
At this point Steve has developed an obsession for transparent 2D versions of weird vessels.
That's just him developing his own brand/image
You know something that your are my most favourite you tuber. I really get amazed and it's a fun to watch your videos. The amount of hard work you put is mind blowing. It's a deep request please continue this work always. 🙏😊
Ooh they sound so nice. Could have been interesting to talk to someone who makes them but great video!
Imagine sitting around with a handful of mud and coming up with this.
Wild!
Shame you had to cut the one. Since the 2d version didn't work right, I wonder if chemistry glassware would have been more effective.
no, it's very simple matter of acoustic volume. helmholtz resonance for a cavity :)
I came into this video expecting more of Steve’s signature transparent models of opaque things, but I was surprised that he added x-rays to the mix, and even stereoscopic images.
Steve has gone from "pouring things out of beakers" guy to "2D fluid mechanics " guy :)
Its very interesting and quite impressive that despite being made by hand that so many effects can be balanced depending on the features of the HAND MADE pots. And they can't necessarily test it because it's clay pottery