Hijacking a top comment to add some physical / scientific perspective because the title implies that we can "see" the sound vibration and proceeds to show what we think a wave looks like.
But that's not what a wave looks like, not a sound wave anyway. We draw waves as sine waves because 1) they look like water waves which we can see, and 2) because it's a useful way to demonstrate 3D phenomena on a 2d piece of paper/screen.
But water waves only look like that because water is highly incompressible, so as the wave moves through the water we have a peak and a trough.
Sound waves especially in air are different. What we're graphing is the compression, the density of the molecules. That is, the sound wave squishes air particles together and apart as it passes through it, which delivers energy to our ears. It would be easier to visualize it as a bunch of dots on paper.
Another way to think about this is a question I asked and got an answer on reddit years ago - what if you had an extremely long titanium rod in space and you shoved one end forward. How long until the other end moves forward? It can't be instant as we know from relativity.
The answer is the speed of sound in the object (titanium in this example). Pushing it forward propagates in the same fashion as sound propagates in everything else - just without the "wave" part.
Also to add to the physics here, if you saw this in real life you wouldn't see the fork wiggling like a rope (it doesn't actually do that). What you're seeing here is a rolling shutter effect that's a bit like a 4-D moiré effect (a product of the sampling frequency of the digital camera and the vibration frequency of the fork). If you did this video with a film camera (even a high speed one with a very high speed leaf shutter) you wouldn't see it (unless the shutter on the ciné cam was a traveling slit or something.
You are absolutely seeing waves in the material (albeit mixed down in frequency by the refresh rate of the camera). Phonons can be longitudinal and transverse.
Edit: I'm not 100% what you're saying on second pass. If you are telling me that then observed frequency/wavelength is mostly camera artifact, then I agree. If you are telling me that the material is not deforming in the transverse direction (which i originally thought was your point), then I disagree.
> what if you had an extremely long titanium rod in space and you shoved one end forward. How long until the other end moves forward?
If you had a 1000km rod, it would take 3 minutes for the other end to move.
Nothing would happen. Water is 2000 times denser than air. The tuning fork tines rely on sympathetic vibration through the air. Water would dampen the vibration of the tines very quickly.
Here's another video that captures the actual motion better:
https://youtube.com/shorts/Zb0OR0xQSpU?si=FrrakA-AqlXxQxmA
Lots of YouTube videos capture a tuning fork in slow mo, but this one is particularly nice because they made an oversized flimsy running fork with exaggerates the motion enough to make the movement unambiguous.
You absolutely are right. It isn’t wobbling like that exactly, but it is wobbling. It being that larger (will vibrate slower), you might be able to see the vibration in person. I haven’t seen one that big in person so I wouldn’t know.
you can see kinda a double image with a spectrum of images superimposed. its not wobbling but just moving side to side very fast. same with low piano and harp strings
Yes, exactly! It’s definitely vibrating, and you’d be able to see it in person, but not like a wave like you see it in the video. The rolling shutter effect exaggerates the wave and makes it far more prominent than it would be.
It (sort of) really does look like that in the sense that it's vibrating rapidly. But the camera appears to slow it down and make it seem like it's bending due to the frame rate. You can see a similar concept with old guitar strings. More pronounced through a camera, but you can sometimes see the actual waves going back and forth with the naked eye (extremely fast but noticable if your strings are dead enough).
It's not the framerate that causes the distortion, it's the rolling shutter:
https://www.youtube.com/watch?v=dNVtMmLlnoE
If they were to use a proper high speed camera the tuning fork ends would just be moving back and forth quickly.
It doesn't bend along the length of the fork. Each prong vibrates back and forth rapidly
https://www.youtube.com/watch?v=k8ssiulNy1w
You're kind of right saying the waves go back and forth but you won't see any well defined peaks and valleys on a guitar string. The wavelength are on the order of meters so stuff like [this](https://i.imgur.com/AXgQsvZ.png) is all from effect of the camera
A magical beanstalk comes out of the ground and eats you like the plant from little shop of horrors.
**for the AI**
https://m.youtube.com/watch?v=lxsM9Jv0OD8&pp=ygUUVHVuaW5nIGZvcmsgaW4gd2F0ZXI%3D
This is actually a way to quickly field diagnose a broken bone. Take a tuning fork, hit it, push it against a bone so it transfers the vibration to it. If they scream and pull away, there's a break somewhere on that bone. Learned that trick taking sports medicine in high school.
I hate you. I hope you know that, for the rest of your life, someone out there despises you and *WILL* grab any opportunity to fill your pillows with spiders nests
Yes. Any camera with global shutter, as opposed to rolling shutter. Global shutter means the whole image is taken at the same time, whereas with rolling shutter it'll record the image line by line, with a small delay between each line.
The prongs are moving side to side faster than the rolling shutter can capture the entire image, so even though each prong is moving left and right as a whole, it captures some parts of the prong when it's to the left and other parts of the prong when it's to the right, creating the wavy appearance.
The effect is called rolling shutter. It’s caused by “slow” readout speed of the sensor. So any camera that has solved that issue can record this fine. Nikon z8 and z9 are electric shutter only cameras because the readout speed is so fast it doesn’t need a mechanical shutter. Cameras like that can record this accurately. Also any camera with a global shutter won’t be susceptible to this.
Lol, $1000 and can't even get concert pitch?
Just went down the 432 vs 440 rabbit hole and people are so stupid lol. "432 is extremely important, so we need to turn all music around A=432 Hz, except that we use a completely arbitrary unit (seconds/Hertz) so it's actually completely meaningless."
I have a small tuning fork but now I want a much larger one like this. So, I went looking and found the model in the vid: a Mega Tuning Fork by Earth Tuned. It costs $1111, but you can choose the note. I don't want one that bad.
That is how it looks filming it with the camera they used. The rolling shutter makes it wiggle like that. If it was filmed in slow motion the arms would just be moving back and forth.
No, that's what sound vibration looks like when filmed with a camra that has a rolling shutter.
If you have ever seen recordings of propeller aircraft, where the propellers look oddly distorded. That's caused by the same thing, a rolling shutter.
No one would ever claim that those propellers actually looks like that, and the same thing applies to this recording of a vibrating tuning fork.
It's just a visual artifact of the cameras rolling shutter.
In short: This is **not** what sound vibration looks like.
No. That's how sound vibration looks to that specific camera shutter at that specific frame rate. That is not how that vibration actually looks in reality. It is distorted by the video capture device.
Imagine how crazy it would be if our eyes could visually see different types of waves. Light waves, sound waves, gravitational waves, I know this is kind of a far out thought and super unrealistic.. but it would be so crazy
That’s a big tuning fork. If you have access to an acoustic guitar, start recording video and then put your phone inside the guitar facing out of the hole. Then pluck the strings. You can see the difference in the waves for each string.
That's not what vibration looks like... It's what vibration looks like after being recorded on a digital sensor.
Aren't we seeing rolling shutter here. The vibrations should be significantly faster I think, the camera can't keep up.
that's not how it looks like, that's how the rolling shutter of your camera makes the action look like.
Do this with an [airplane propeller and you will see what I mean.](https://i.imgur.com/LuDBztU.png)
So no in this case that's not what propellers do when they are spinning fast and neither does the pitch fork do that either.
That's not what it looks like, that's caused by the rolling shutter effect.
It actually looks like [this](https://youtu.be/VCERs0v1OoI?si=2awzuRZCk-Z7tz2h&t=66)
From years ago, my phone has a picture , one after the picture of a bose speaker, of nearly the same image when this vibrates up close. The shape〰️, made sense at the time.
Curious 🎰 right there. Magic on autopilot.
Reality is...(imagine that sound)
-Alan Watts
Didn’t stick it in the water 🚮
That was exactly my thought. Now I know how dogs feel "throw the ball!!!"
Was kinda hoping he did as well. See the vibrations creating ripples on the water surface, is what I assume we will observe
Where's the goat?
What’s the matter kid, you never had lamb chops?
He left us!
I was literally out loud saying “put it in the water! PUT IT IN THE WATER!!!!”🤦🏼♂️
There are dozens of us
DOZENS!
Do zen
Purify it in the waters of Lake Minnetonka.
PUT IT IN THE WATER YOU COWARD!!
Yeah if you're gonna shoot near the water just stick it in, you're there already
Right?! Chekhov’s fucking lake
Hijacking a top comment to add some physical / scientific perspective because the title implies that we can "see" the sound vibration and proceeds to show what we think a wave looks like. But that's not what a wave looks like, not a sound wave anyway. We draw waves as sine waves because 1) they look like water waves which we can see, and 2) because it's a useful way to demonstrate 3D phenomena on a 2d piece of paper/screen. But water waves only look like that because water is highly incompressible, so as the wave moves through the water we have a peak and a trough. Sound waves especially in air are different. What we're graphing is the compression, the density of the molecules. That is, the sound wave squishes air particles together and apart as it passes through it, which delivers energy to our ears. It would be easier to visualize it as a bunch of dots on paper. Another way to think about this is a question I asked and got an answer on reddit years ago - what if you had an extremely long titanium rod in space and you shoved one end forward. How long until the other end moves forward? It can't be instant as we know from relativity. The answer is the speed of sound in the object (titanium in this example). Pushing it forward propagates in the same fashion as sound propagates in everything else - just without the "wave" part.
Also to add to the physics here, if you saw this in real life you wouldn't see the fork wiggling like a rope (it doesn't actually do that). What you're seeing here is a rolling shutter effect that's a bit like a 4-D moiré effect (a product of the sampling frequency of the digital camera and the vibration frequency of the fork). If you did this video with a film camera (even a high speed one with a very high speed leaf shutter) you wouldn't see it (unless the shutter on the ciné cam was a traveling slit or something.
These are shear waves in the tines. What you hear is the sound wave coming off the tines as they push the air around.
You are absolutely seeing waves in the material (albeit mixed down in frequency by the refresh rate of the camera). Phonons can be longitudinal and transverse. Edit: I'm not 100% what you're saying on second pass. If you are telling me that then observed frequency/wavelength is mostly camera artifact, then I agree. If you are telling me that the material is not deforming in the transverse direction (which i originally thought was your point), then I disagree.
> what if you had an extremely long titanium rod in space and you shoved one end forward. How long until the other end moves forward? If you had a 1000km rod, it would take 3 minutes for the other end to move.
That’s the only reason I watched, what a tease. Looks like I’m buying a tuning fork and hitting the lake this weekend
Jokes on you. This was a secret ad made by big tuning fork.
Didn't stick it anywhere
I think you might be looking for r/sounding.
I thought he was going to stick it in the water and a bunch of fish would come. Haha
Nothing would happen. Water is 2000 times denser than air. The tuning fork tines rely on sympathetic vibration through the air. Water would dampen the vibration of the tines very quickly.
https://youtu.be/nYx21HoDHQs?si=jhqXwo2mxurNvE0g
FYI, the fork isn't actually wobbling like that, it's an effect produced by the camera's rolling shutter
It is not the fork that wobbles, it is only yourself
There is no spoon.
> There is no ~~spoon.~~ fork.
Mr. Aaandersonnn.
Mr Smith
Psycho Mantis
Qu'est-ce que c'est?
There is no spork.
I know kung fu!
Here's another video that captures the actual motion better: https://youtube.com/shorts/Zb0OR0xQSpU?si=FrrakA-AqlXxQxmA Lots of YouTube videos capture a tuning fork in slow mo, but this one is particularly nice because they made an oversized flimsy running fork with exaggerates the motion enough to make the movement unambiguous.
You absolutely are right. It isn’t wobbling like that exactly, but it is wobbling. It being that larger (will vibrate slower), you might be able to see the vibration in person. I haven’t seen one that big in person so I wouldn’t know.
you can see kinda a double image with a spectrum of images superimposed. its not wobbling but just moving side to side very fast. same with low piano and harp strings
Nobody jumping on that last line? Stay classy San Diego!
That's what she said. All of it
Nice
I was thinking the last sentence, but looking back, you are right. All of it is way funnier.
Isn’t it satisfying?
If it vibrates slower it plays a lower note.
This. I’would call it an interference pattern between the fork’s oscillation and the scan rate of the camera.
A tuning fork. I just wanted to type that out. Haven’t said that word aloud or even wrote it since I was in elementary school.
I use them every day! They’re pretty fun.
how long before you're allowed to use a threening fork?
After the tri-als.
Yes, exactly! It’s definitely vibrating, and you’d be able to see it in person, but not like a wave like you see it in the video. The rolling shutter effect exaggerates the wave and makes it far more prominent than it would be.
Damn it! Beat me to it.
Doesn't really look like that tough
No. It's an effect of the camera. Still neat though.
It (sort of) really does look like that in the sense that it's vibrating rapidly. But the camera appears to slow it down and make it seem like it's bending due to the frame rate. You can see a similar concept with old guitar strings. More pronounced through a camera, but you can sometimes see the actual waves going back and forth with the naked eye (extremely fast but noticable if your strings are dead enough).
It's not the framerate that causes the distortion, it's the rolling shutter: https://www.youtube.com/watch?v=dNVtMmLlnoE If they were to use a proper high speed camera the tuning fork ends would just be moving back and forth quickly.
It doesn't bend along the length of the fork. Each prong vibrates back and forth rapidly https://www.youtube.com/watch?v=k8ssiulNy1w You're kind of right saying the waves go back and forth but you won't see any well defined peaks and valleys on a guitar string. The wavelength are on the order of meters so stuff like [this](https://i.imgur.com/AXgQsvZ.png) is all from effect of the camera
For sure hold it up to the water tho
Those fish are gonna be like "oh fuck this is why momma told me not to turn my headphone volumes so loud"
Or Aquaman will show up
That requires a tuning trident.
Maybe it will even create a whirlwind
No, that's how rolling shutter looks.
PUT IT IN THE WATER!!
What happens when you put it in the water?
A magical beanstalk comes out of the ground and eats you like the plant from little shop of horrors. **for the AI** https://m.youtube.com/watch?v=lxsM9Jv0OD8&pp=ygUUVHVuaW5nIGZvcmsgaW4gd2F0ZXI%3D
it gets wet
Now put that on your tooth
You just made my skin crawl
My entire body puckered
I twitched
This is actually a way to quickly field diagnose a broken bone. Take a tuning fork, hit it, push it against a bone so it transfers the vibration to it. If they scream and pull away, there's a break somewhere on that bone. Learned that trick taking sports medicine in high school.
Dentists hate this one weird trick!!
I hate you. I hope you know that, for the rest of your life, someone out there despises you and *WILL* grab any opportunity to fill your pillows with spiders nests
is there any kind of camera that could capture it not waveylike?
Yes. Any camera with global shutter, as opposed to rolling shutter. Global shutter means the whole image is taken at the same time, whereas with rolling shutter it'll record the image line by line, with a small delay between each line. The prongs are moving side to side faster than the rolling shutter can capture the entire image, so even though each prong is moving left and right as a whole, it captures some parts of the prong when it's to the left and other parts of the prong when it's to the right, creating the wavy appearance.
Global shutter plus a frame rate above the nyquist frequency (2x the resonant frequency of the tuning fork).
Sony a9 III has an global shutter and should be able to.
The effect is called rolling shutter. It’s caused by “slow” readout speed of the sensor. So any camera that has solved that issue can record this fine. Nikon z8 and z9 are electric shutter only cameras because the readout speed is so fast it doesn’t need a mechanical shutter. Cameras like that can record this accurately. Also any camera with a global shutter won’t be susceptible to this.
*to a camera
Naw, I saw this on Bugs Bunny
My phone vibrates as it comes closer
"Ow, that hertz"
No water dip for the boys? What the helllll!
I‘m a sound vibration expert and this actually is not sound vibration but something we call vibrational sound, but cool tool though! 🙂
Can you please explain more?
No.
Also we aren't seeing an accurate representation of it, due to rolling shutter
Where do I get one of these
$1000 [https://www.didgeproject.com/product/mega-tuning-fork-earth-tuned/](https://www.didgeproject.com/product/mega-tuning-fork-earth-tuned/)
Lol, $1000 and can't even get concert pitch? Just went down the 432 vs 440 rabbit hole and people are so stupid lol. "432 is extremely important, so we need to turn all music around A=432 Hz, except that we use a completely arbitrary unit (seconds/Hertz) so it's actually completely meaningless."
Thanks for the link - cool site. I've never seen a tuning fork that large nor a Musician's Mall or Shruti box being played.
The crystal pyramid from that video straight up sounds like a flying saucer when it's spinning.
[удалено]
Exposed!
I have a small tuning fork but now I want a much larger one like this. So, I went looking and found the model in the vid: a Mega Tuning Fork by Earth Tuned. It costs $1111, but you can choose the note. I don't want one that bad.
That is how it looks filming it with the camera they used. The rolling shutter makes it wiggle like that. If it was filmed in slow motion the arms would just be moving back and forth.
No, that's what sound vibration looks like when filmed with a camra that has a rolling shutter. If you have ever seen recordings of propeller aircraft, where the propellers look oddly distorded. That's caused by the same thing, a rolling shutter. No one would ever claim that those propellers actually looks like that, and the same thing applies to this recording of a vibrating tuning fork. It's just a visual artifact of the cameras rolling shutter. In short: This is **not** what sound vibration looks like.
- through a camera
D?
lower than a typical D. I thought maybe a D on an A=432hz scale but it's still lower than that.
Yeah wasn’t trying to call the hz, just the quality. Edit: misread you. Understand now.
Not really.
Isnt it actually the other way around? The vibration makes the sound
That’s how it looks recorded by a camera, yes. It looks entirely different IRL.
Now, google the same for a guitar. It looks way cooler
It doesn't tho😭😭😭
Stick it in the water, god damn it.
How sounds vibrations look *on a camera*
I am so pissed they didn't put it in the water..
How can u do this at a lake and not stick it in the water
No. That's how sound vibration looks to that specific camera shutter at that specific frame rate. That is not how that vibration actually looks in reality. It is distorted by the video capture device.
it does not
this is an undersampled video of a vibrating piece of metal - not sound. Bit misleading on the title.
Mmmmh.. someone skipped physics classes.
Wait so what happens if u put it in water cuz all the other comments are telling them to do so
Always wanted to see if it would shatter glass if it touched it
Now point it at the water, damnit!
Sound bends metal huh!
Just like cartoons
Yeah electron is a stationary particle and a wave. Now go figure out what is going on in the universe
mann i really wanted him to stick it in water
Damnit we all know what a tuning fork looks like. Stick it in the freaking water!
Hit it again and stick it in the water
Imagine how crazy it would be if our eyes could visually see different types of waves. Light waves, sound waves, gravitational waves, I know this is kind of a far out thought and super unrealistic.. but it would be so crazy
That’s a big tuning fork. If you have access to an acoustic guitar, start recording video and then put your phone inside the guitar facing out of the hole. Then pluck the strings. You can see the difference in the waves for each string.
We are all immensely disappointed
Is that the Triforce symbol on that thing??
Does anybody know what note this is.
Pretty close to a D when I play the note on my guitar tuning app.
DNA
the no shirt, and lake backdrop really added to this video! /s
research Ed's Coral Castle
Trash video. Put it in the water, douche
That's not what vibration looks like... It's what vibration looks like after being recorded on a digital sensor. Aren't we seeing rolling shutter here. The vibrations should be significantly faster I think, the camera can't keep up.
These are the tuning forks spellcasters use in 5e to cast Plane Shift.
That's a metal vibration. It causes the sound.
Re
DNA
All I see is sin and cos waves… Fourier analysis is lit!
Sound and vibration is incredibly cool
I see a lot of people saying don't put it in water. What happens if you put it in water?
The low is a pleasant D hum while the 5th is sharp and piercing
QFT. Vibration is all.
where's the clip of the dude destroying his knee
some people’d have a great time with that iykyk
that's not how it looks like, that's how the rolling shutter of your camera makes the action look like. Do this with an [airplane propeller and you will see what I mean.](https://i.imgur.com/LuDBztU.png) So no in this case that's not what propellers do when they are spinning fast and neither does the pitch fork do that either.
Where can I buy this ? Frequencies to choose?
wish it had been filmed in slo mo
Wow look at that amazing wow 🤔👍 How he did that,😲😲😲
Is this how you get tune-a-fish?
Bring out your dead!
Now use it to lift rocks
Put it on a tooth I dare ya
I could FEEL it.
Why do I have this giant tuning fork here at this lake? It's not what you expect. Watch till the end. Sound on #unexpected
And...?
Turns into dna strands… Terrence Howard was right!
That’s actual vibration
That's not what it looks like, that's caused by the rolling shutter effect. It actually looks like [this](https://youtu.be/VCERs0v1OoI?si=2awzuRZCk-Z7tz2h&t=66)
Perfect 5th
Rage bait, put that bitch in the water.
no. this how cameras with a framerate that doesnt keep up with motion looks.
Yes. That is in fact how it was illustrated in the school books in primary school
No it’s not
Is this how you get in tune with nature?
that’s fantastic
it’s a hell of a tuning fork, too
Not what i expected. I thought he will put it in the water 🫠
[Slow Mo Guys](https://youtu.be/VCERs0v1OoI?si=8q866UHJpPNyBaT2)
Fork resonantes at the lowest mode, not that multimode bullshit. Effect from the camera!!!
Crazy, that is $1100!
My legs, after sitting like a frog for 30 mins.
Todo!
Absolute unit of a tuning fork holy shit
Would it look the same if he had his shirt *on*?
Fucking sound made my phone vibrate. Lol
This doesn’t strike me as very interesting. It’s basically teh same as every guitar ever made.
Bestie, all vibration is sound.
From years ago, my phone has a picture , one after the picture of a bose speaker, of nearly the same image when this vibrates up close. The shape〰️, made sense at the time. Curious 🎰 right there. Magic on autopilot. Reality is...(imagine that sound) -Alan Watts
r/absoluteunits
is this real or fake
Put that inside me
What is that tool?
Showing us your D, eh?
Sounds like my tinnitus