The Sound of those Buzzing Magnets
ฝัง
- เผยแพร่เมื่อ 26 มิ.ย. 2024
- You know those magnets that buzz when you throw them in the air? Why do they make that sound? In this video, we'll learn about magnetism, inelastic collisions, the geometric series, and the short-time Fourier transform and spectrograms.
Become a Patreon member: / physicsforthebirds
0:00 Intro
1:02 Modeling Magnetism
3:03 Collisions
4:09 Finding the Frequency
7:59 Audio
Thank you to Caleb Birtwistle for captioning!
You can try the code I used here: drive.google.com/drive/folder...
Models of magnets: p.2-5, www2.fisica.unlp.edu.ar/magnet...
Coulomb's original paper: www.ifi.unicamp.br/~assis/Cou...
Inelastic collisions: phys.libretexts.org/Courses/M...
STFT and other time-frequency transforms: arxiv.org/abs/2101.06707
If I was a spherical human in a perfect vacuum, this is the kind of stuff I'd spend my time on all day.
If people knew how easy finite element analysis was with ms excel, they could remove all the silly assumptions
Felonious Bolus disagrees
not if. When.
Don't forget that it's a perfect yet breathable vacuum.
Did you just point out being spherical because otherwise you would have spent all your time wanking?
"Just shy of infinite" is a _very_ funny phrase.
Yes, I'm sure it's far lower than TREE(3).
Forever minus one day.
One day divided by forever?
It’s an oxymoron, just shy of infinite also means infinitely far from infinite, funny thought lol.
9.9999999e307
I feel like this channel is the epitome of the idea that anything in the world can be interesting if you look at it from the correct angle!
Just as long as you don't look at the world as only right angles!
Vsauce?
@@muhfuckersfuckfuckers1108 maybe, but it doesn't click with me the same way Bird does. Vsauce is also super cool though!
I mean.. everything is connected to everything else and you like something, therefore you like everything if you allow enough connection hops.
@@blacklistnr1 I'm not sure I agree with that logic. I find spiderman cool, but even though Superman is a comic book super hero, I find him dreadfully dull. Just because they're related doesn't mean that they're equally interesting
I love this channel, because it doesn't assume the audience knows nothing like most science channels, but it still explains everything clearly in case you don't.
I would rather go to Hell than submit to a false god.
@repentandbelieveinJesusChrist9no thank you
@repentandbelieveinJesusChrist9
Take your beleaves somewhere else john
@repentandbelieveinJesusChrist9nuh uh
@repentandbelieveinJesusChrist9False prophet
For a while you've been making videos that are honestly some of my favorite on the entirity of youtube! They're niche but interesting and engaging which I find so impressive. They're also sneakily educational which is wonderful. Thank you for the incredible works.
I'm not very good with words, but this is exactly what I wanted to say. Clearly, I must be a bird. ❤
As a kid I once accidentally found two oddly-shaped magnetic rocks while goofing around in my neighbors’ backyard, and I loved them, and they made a similar sound. Sadly I’ve since lost them but I have never forgotten them.
Wait a minute, there's a magnet behind that rock!
Lost but not forgotten 07
That's also how magnetism was first discovered way back when :) they would've been called lodestones for the longest time. Some cultures highly valued polished and shaped ones, I wouldn't be surprised if they liked the sound too.
Great video! Fun fact, the magnets don't bounce infinitely many times due to the air's viscosity... There is a cutoff for a critical Stokes number (and another characteristic elastic number) for which particles approach one another without rebounding.
Thank you for saving us from absurdity 😂
If the magnets were in a vacuum, would they buzz infinitely?
@@woomy2343no, heat is still generated albeit a small amount. No system is perfectly closed.
@@TeamTechSkatersheat is just the magnets buzzing at a very small scale, so technically, yes, in the classical limit. But also no, heat/sound is actually quantized in solid-state physics, and also, with no air they wouldn't be making noise at all.
@@NXTangl I had replied but I need to investigate your comment about solid-state quantization before I think I make it again. Care to explain so I understand?
What I had said before is that heat will still be generated by the exchange of kinetic energy even on the small scale. This exchange excites the atoms and would give rise to temperatures because heat is still incurred, even in a vacuum. To answer woomy's question in an applicable sense, no system is closed, and losses are always expected. If start changing givens, my answer may change
Once again you've managed to create an absolutely captivating video about a topic that most people never really think about. I love the pacing of your videos and how you manage to connect two seemingly unrelated concepts in unexpected ways.
when I was little I used to do drugs
Can you please tell your pfp to stop spinning?
My greatest accomplishment in life will be when I can understand everything being said in physics videos like these.
I understood about half of the video so I’m getting closer.
My greatest accomplishment will be when my viewers can understand everything being said in physics videos like these!
A couple of advanced placement high school courses will get you more than all the way there lol
Almost everything he is talking to is being thaught in advanced mathmetics (you will have to take if you want a degree in engeneering)
Stuff like this is why so many physicists are also musicians! Understanding harmonics comes far more naturally after you've played with timbres and disharmonic overtones in a musical context. (Which is exactly why I suspect the creator chose this subject!)
I love your video topics. They are simultaneously so disconnected, unpredictable and somehow still carry similar „vibes“. I hope you will be able (want to) continue to explore such unique topics.
Believe me, I cover these topics because I'm having fun with it. I'm just amazed that other people want to hear ramble about them!
Congratulations on the 100k!
Something about this video hit different. They usually feel like you are here to teach me something neat, but this time we were on an adventure to calculate the physics of a random part of life! It was so much more engaging!
I want you too
@@dustlessbowl4708 what 😳
As an engineering student my first thought after realizing that the force is inversly proportional to the inverse of the distance, was "Just approximate with a linear function", so when you said you're gonna assume constant force it just got better.
lol us engineers and our linear approximations
pi^2=g=10
"Just shy of infinity" is my new favourite phrase
It would be interesting to use those frequency curves to synthesize an audio clip, and see if it sounds like the real magnets.
It wouldn't be perfect. Every material has it's own resonant frequencies which would help sustain some frequencies while muting other frequencies. This is why different shaped rattlesnake eggs sound different. Making real world sounds synthetically is really hard.
I absolutely love your videos because they're this wonderful combination of niche topics with eloquent explanations and amazing visualizations! Nothing else on TH-cam can come close to these! Thank you!
rarely do I watch a math video where I feel the math as much as I hear it. This just FEELS right as you go through explaining it.
_What is the sound of two buzzing magnets?_
-- ancient bird proverb
now we know about two magnets buzzing, but we have yet to determine the sound of one magnet buzzing
Absolutely in love with the intro music at 0:58 - ESPECIALLY the arpeggiated synth fade out. It makes me feel a certain way, can’t stop replaying it
As many said, your videos are amazing.
One thing I have to mention is about your video on music. The part where you explained why and how certain harmonies sound good for us has a special meaning to me. I experienced this before watching your video, while messing around with sound. Your explanation was kind of a miracle to me.
Hey, thanks for letting me know that. That makes me happy!
I'm an Audio Engineer, and I just found a couple of these magnet sets the other day! I'm absolutely going to try to get a higher resolution spectrogram.
It’s really nice to see a science channel that doesn’t explain how sound waves work like there talking to pre schoolers
I used to have a pair of those magnets as a kid that i haven't thought about in almost 2 decades. Amazing video as always, and thanks for the blast of nostalgia!
You should swallow one wait a few hours then swallow another
@@napoleonbonerfarte6739 you get a free trip to hospital and time off school, assuming you don't die :)
Just discovered your channel: love it. You elaborate with simple but clever and effectice animations, and you explain the math behind it without dumbing stuff down too much but pacing it enough that its entertaining even to people who aren't here the check or recreate your work.
This is slowly becoming the best science channel on TH-cam.
I remember how much I used to play with these as a kid. Never knew there'd be a video so many years later explaining how they work
I've been getting this recommended since you uploaded it for some reason... I'm so glad I decided to watch.
I seriously love your contents. keep em coming, you will be one of the best educators in youtube, I can see it happening.
I really enjoy your videos. I feel like all of them are stuff you fell into a rabbit hole googling then realized you had enough understanding to look into it much further than the average person
Its always awesome when your model actually fits your data. Great ending!
knowing nothing about most of what you just said, I still found this extremely interesting. Thank you.
I love how you are able to present and explain content that can conceptually be understood by almost everyone
I really, truly, love your channel. I hope you keep going.
Dude I watched this high has a kite and while I didn’t understand the math at all; I was thoroughly intrigued and impressed by the quality of this video, well done homie keep doing this!
I hope ur content reaches even a wider audience...! you somehow spark the joy of science in me...! thanks!!
These videos are so well done that honestly it's just amazing, i hope you continue doing this because it's just amazing :)
I really enjoyed this video! The explanations are straightforward and I really like your use of coding tools for analysis. It really gives the video a “hands-on” sort of feel!
Really nice explanation with a neat visual check to back it up! Haven't thought about these magnets in years, but now I kinda want to go dig them up again...
Bruh, I clicked on the video thinking it will be like a simple fun physics video. I did not expect it to be this deep at all and that's a compliment.
Very cool and fun video! Enjoyed seeing you play around with equations to see if they fit the experiment!
i had this exact question in my head last week, thanks for answering it :)
I don't know why this was recommended to me, but I am so happy it was. Subbed, and cheers!
I'm not a physics guy, but this video was awesome. I liked seeing calculus used! I don't really intend to study and use many physics concepts, but I really respect people like you who can find a question about something and just use them to find the answer.
Nice. Well done little physics experiment and analysis.
it would be really interesting to use the equation to synthesize audio waveforms and see how well it matches, plus turn some knobs to generate sounds from preposterous magnets
this made my brain happy, subscribed !
honestly amazing! i love the idea behind this
This video is so nerdy, and I say that with a just-shy-of-infinite amount of love. I want more nerds in my recommendeds. Great stuff.
I'm loving this, and I really hope your channel blow up because it's really interesting!
Just found this channel immediately subscribed
Really liked the video, keep up the good work, I like who you explain things and really cool themes and subjects you bring up on this channel:)
Never would have thought I would be watching a video about bouncing magnets and enjoy it. You have earned a sub.
that was a lovely watch!
I got a couple of these as a kid and still have them. Thank you for making them interesting to play with again haha.
It would be nice to hear sound that fitted curve and its harmonics make.
this is one of the first things i ever modeled when i was first learning programming. i modeled the finite bounces by simply having a threshold for velocity where if the velocity of a ball was below the threshold, the velocity of the ball in the y direction was set to zero, and a different threshold for the x direction. this allowed for separate coefficient of friction and restitution and resulted in super realistic bounces. you can model this very easily though without using any formulas and instead just adding values each frame of a simulation with discrete time. if you make the discrete time steps 25 ms or less, your eye will not be able to see the steps and it will appear continuous. its pretty slick
Absolute madman content, love it, had to get my magnets off the shelf
Your channel certainly is an ascending star!
Can't wait to see the next video :)
Also I love how you drew the magnets. They look like extremely cute eyes
Thank you for making content like this. It makes me happy.
I understand nothing about complicated math, but I like this sound so I watched this whole thing.
I just finished physics to I actually understood some of the math that you were doing so I could see your logic behind it. Having the stuff I learned being applied in a different waves so interesting to see!!
You continue to create absolutely brilliant videos! Please keep up your work I love it dearly ❤
From theory to experiment and proof. Excellent video, that shows the scientific method into action.
Really good physics, it reminded me of the Tadashi Tokieda course "Invitation to simple modeling of complex fenomena"
Hi I just wanted to say thank you. Recently I went on a trip to Georgia to visit a museum and I bought those magnets. I loved playing with them until I dropped them on the tile in my house and they cracked. When I saw this video it made me so happy
Omg I had these magnets as a kid and I frikkin loved them!
Man I used to have these and other shaped ones as a kid, haven’t heard or seen anything about them in probably nearly 15 years until this video was randomly recommended
I love that the example music at 8:15 is the infamous "the lick".
Amazing topic my dude. I always think about this kind of stuff that we take for granted. Got my subscribe!
Ive never at all been interested in physics and its 2 am currently but I am paying full attention to this video
I love watching people do cool stuff
Yo thank you for answering questions I've always wondered about in an approachable way. Your videos really inspire me to learn about how the world works
this is one of the best channels on TH-cam
this is my first video of this channel and I love the name of the channel:° unironically :3
These videos really scratch that particular brain itch
Ah yes, finally. A physics channel for birds, like me. Subscribed!
For functionally no reason you have done some excellent work and that's wonderful👍🏻
Nice! A very solid analysis with good math! Well executed. It got me thinking about how delta/impulse functions might factor into it. In the early windows of the frequency analysis, where there's only one bounce per window, we can see the impulses as the vertical bars, covering every frequency. I think that the harmonics you see later on might actually be best considered an artifact of the fourier transform operating on a series of impulses occurring at a given frequency. It falls into that weird area of psychoacoustics where we transition from hearing them as separate events and instead hear them as sounds of a given frequency.
Olá, sou brasileiro. Adorei seu canal. Seu conteúdo é muito legal e didático. Espero que você continue fazendo mais vídeos e que eles sejam compartilhados. Propagar o conhecimento da maneira que você faz é louvável. Desejo muita sorte e felicidade para você. Abraço.
I opened the video thinking it would be someone clanking the magnets for 10 minutes. Ended up watching the whole video and got a mini lesson to boot, I call that a win.
This is freaky good science content
This was really cool!
I didn't understand anything after 3:00 but i somehow love videos like that.. about physics, chemistry, engineering. I Just love it.
Can i just say, thank you so much for using a dark background with white text. So much easier on the eyes 👍
I have my first day of college today and instead of sleeping I’m watching this video at 12:35AM
Good content bro have a sub
so cool! thank you for making these videos
Great video!
Wow a channel that’s exactly what my mom wanted me to watch, “why don’t you watch math videos instead of interesting facts” and this video is a mix I’m fine with
I literally just started playing with these maybe a few weeks ago crazy
Just noticed you hit 100k subs!! Congratulations man, it's so well deserved. Hope you have a good place on your wall for that play button
Broo. 😐Im an ACCOUNTANT/BUSINESS MAJOR, this just got me captivated 😍. I'm a fan.. And you sure as hell know how to make these complex concepts (for a business major) just seem fun and interesting ❤Thx m8💋
Super video! Everything was super clear and easy to understand. Btw what animation tool are you using to make your videos?
Loved this one!
I had these.
Miss em.
Wonderful video. Very interesting.
I don't understand most of the numbers but still enjoyed this thoroughly! :D
I "lick" what you've done with the audio analysis
your videos are sick my man, always super creative ideas and good production, even if I don't understand a lick of the physics aha
Congrats on the 100K subs!
Thank you for helping me get there!
5:55 *a geometric sum :)
Wonderful video!