The Sound of those Buzzing Magnets
Рет қаралды 980,094
Күн бұрынYou 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
@sandordugalin8951 11 ай бұрын
If I was a spherical human in a perfect vacuum, this is the kind of stuff I'd spend my time on all day.
@ZebraLemur 11 ай бұрын
If people knew how easy finite element analysis was with ms excel, they could remove all the silly assumptions
@austinpeterson4898 11 ай бұрын
Felonious Bolus disagrees
@heather19515 11 ай бұрын
not if. When.
@Crosseyedhero 11 ай бұрын
Don't forget that it's a perfect yet breathable vacuum.
@AlbertoCiarrocca 11 ай бұрын
Did you just point out being spherical because otherwise you would have spent all your time wanking?
@Palozon 11 ай бұрын
"Just shy of infinite" is a _very_ funny phrase.
@lyrimetacurl0 11 ай бұрын
Yes, I'm sure it's far lower than TREE(3).
@asheep7797 4 ай бұрын
Forever minus one day.
@Neuro_nActivation 4 ай бұрын
One day divided by forever?
@Disregardedinc 4 ай бұрын
It’s an oxymoron, just shy of infinite also means infinitely far from infinite, funny thought lol.
@PWMV573 4 ай бұрын
9.9999999e307
@headcrabking9054 11 ай бұрын
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!
@michaelf8221 11 ай бұрын
Just as long as you don't look at the world as only right angles!
@muhfuckersfuckfuckers1108 11 ай бұрын
Vsauce?
@headcrabking9054 11 ай бұрын
@@muhfuckersfuckfuckers1108 maybe, but it doesn't click with me the same way Bird does. Vsauce is also super cool though!
@blacklistnr1 11 ай бұрын
I mean.. everything is connected to everything else and you like something, therefore you like everything if you allow enough connection hops.
@headcrabking9054 11 ай бұрын
@@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
@jucom756 11 ай бұрын
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.
@alluringvoice7081 11 ай бұрын
I would rather go to Hell than submit to a false god.
@eagonwild 11 ай бұрын
@repentandbelieveinJesusChrist9no thank you
@divat10 11 ай бұрын
@repentandbelieveinJesusChrist9 Take your beleaves somewhere else john
@snailcheeseyt 11 ай бұрын
@repentandbelieveinJesusChrist9nuh uh
@mrbanana6464 11 ай бұрын
@repentandbelieveinJesusChrist9False prophet
@mathpuppy314 11 ай бұрын
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.
@ForestFire369 11 ай бұрын
I'm not very good with words, but this is exactly what I wanted to say. Clearly, I must be a bird. ❤
@LimitedWard 11 ай бұрын
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.
@lorenzodiambra5210 11 ай бұрын
when I was little I used to do drugs
@TheKeller101 10 ай бұрын
Can you please tell your pfp to stop spinning?
@SnailSnail622 11 ай бұрын
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.
@wheedler 11 ай бұрын
Wait a minute, there's a magnet behind that rock!
@amitakler4710 10 ай бұрын
Lost but not forgotten 07
@kaitlyn__L 9 ай бұрын
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.
@silverspuppet 11 ай бұрын
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.
@physicsforthebirds 11 ай бұрын
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!
@leoanimations4360 11 ай бұрын
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.
@physicsforthebirds 11 ай бұрын
My greatest accomplishment will be when my viewers can understand everything being said in physics videos like these!
@marcello9476 11 ай бұрын
A couple of advanced placement high school courses will get you more than all the way there lol
@LemonsRage 11 ай бұрын
Almost everything he is talking to is being thaught in advanced mathmetics (you will have to take if you want a degree in engeneering)
@kaitlyn__L 9 ай бұрын
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!)
@JCisHere778 11 ай бұрын
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.
@wiegraf9009 11 ай бұрын
Thank you for saving us from absurdity 😂
@woomy2343 11 ай бұрын
If the magnets were in a vacuum, would they buzz infinitely?
@TeamTechSkaters 11 ай бұрын
@@woomy2343no, heat is still generated albeit a small amount. No system is perfectly closed.
@NXTangl 11 ай бұрын
@@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.
@TeamTechSkaters 11 ай бұрын
@@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
@alienbroccoli8296 11 ай бұрын
Congratulations on the 100k!
@Mcbuzzerr 11 ай бұрын
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!
@dustlessbowl4708 11 ай бұрын
I want you too
@Frau_Brotchen 5 ай бұрын
@@dustlessbowl4708 what 😳
@dominiklukacs7677 11 ай бұрын
"Just shy of infinity" is my new favourite phrase
@pyglik2296 11 ай бұрын
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.
@jajefan123456789 11 ай бұрын
lol us engineers and our linear approximations pi^2=g=10
@yokeshhsekoy 11 ай бұрын
I absolutely love your videos because they're this wonderful combination of niche topics with eloquent explanations and amazing visualizations! Nothing else on KZfaq can come close to these! Thank you!
@13mschen 11 ай бұрын
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.
@Ntrpy_ 11 ай бұрын
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!
@napoleonbonerfarte6739 11 ай бұрын
You should swallow one wait a few hours then swallow another
@kaitlyn__L 9 ай бұрын
@@napoleonbonerfarte6739 you get a free trip to hospital and time off school, assuming you don't die :)
@leobattle9489 11 ай бұрын
It would be interesting to use those frequency curves to synthesize an audio clip, and see if it sounds like the real magnets.
@rich1051414 6 ай бұрын
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.
@BenAlternate-zf9nr 10 күн бұрын
Came here to say this. You would have to model the vibration response of a single magnet when struck and layer that over the bouncing response.
@yanikb.1312 11 ай бұрын
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.
@physicsforthebirds 11 ай бұрын
Hey, thanks for letting me know that. That makes me happy!
@idontwantahandlethough 11 ай бұрын
_What is the sound of two buzzing magnets?_ -- ancient bird proverb
@brightblackhole2442 22 күн бұрын
now we know about two magnets buzzing, but we have yet to determine the sound of one magnet buzzing
@lephtovermeet 11 ай бұрын
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.
@mojoxide 6 ай бұрын
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
@thespacetimesignature 11 ай бұрын
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.
@abelandhisopinions888 11 ай бұрын
I hate how I don't understand when you start speaking math, and then brain just go back to "heehoo, magnet make noise 🙃"
@GuildOfCalamity 11 ай бұрын
This is slowly becoming the best science channel on KZfaq.
@mishram4446 11 ай бұрын
I seriously love your contents. keep em coming, you will be one of the best educators in youtube, I can see it happening.
@samuelspace101 6 ай бұрын
It’s really nice to see a science channel that doesn’t explain how sound waves work like there talking to pre schoolers
@sammy-the-haze 11 ай бұрын
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
@Ashinle 11 ай бұрын
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
@ConsultingHumor 7 ай бұрын
I love how you are able to present and explain content that can conceptually be understood by almost everyone
@shivajoshi9068 11 ай бұрын
I hope ur content reaches even a wider audience...! you somehow spark the joy of science in me...! thanks!!
@Arcsfinx5984 11 ай бұрын
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!
@bonnibel_bubblebuns 9 ай бұрын
I've been getting this recommended since you uploaded it for some reason... I'm so glad I decided to watch.
@Frogowning 9 ай бұрын
When you said "can you do something infinitely" I immediately said "your mom."
@Crystal-ef3dm 11 ай бұрын
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...
@jonathandavis7019 5 ай бұрын
Its always awesome when your model actually fits your data. Great ending!
@juliet4093 7 ай бұрын
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!
@hollowflower 11 ай бұрын
These videos are so well done that honestly it's just amazing, i hope you continue doing this because it's just amazing :)
@joaofreitas5483 8 ай бұрын
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:)
@gedaliakoehler6992 11 ай бұрын
Very cool and fun video! Enjoyed seeing you play around with equations to see if they fit the experiment!
@Melliyel 10 ай бұрын
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.
@Gunbudder 11 ай бұрын
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
@daltonbuffinton7275 9 ай бұрын
knowing nothing about most of what you just said, I still found this extremely interesting. Thank you.
@skyhighflying1525 11 ай бұрын
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!!
@CasMcAss 11 ай бұрын
honestly amazing! i love the idea behind this
@mrnobody2344 11 ай бұрын
You continue to create absolutely brilliant videos! Please keep up your work I love it dearly ❤
@marcovillalobos5177 11 ай бұрын
Really good physics, it reminded me of the Tadashi Tokieda course "Invitation to simple modeling of complex fenomena"
@douglaslowe6628 11 ай бұрын
i had this exact question in my head last week, thanks for answering it :)
@saitougin7210 11 ай бұрын
Nice. Well done little physics experiment and analysis.
@yumnuska 6 ай бұрын
I really, truly, love your channel. I hope you keep going.
@wunderedich5101 10 ай бұрын
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
@DonTinker 10 ай бұрын
I'm loving this, and I really hope your channel blow up because it's really interesting!
@somedude8604 11 ай бұрын
I got a couple of these as a kid and still have them. Thank you for making them interesting to play with again haha.
@brickshitter8015 10 ай бұрын
I don't know why this was recommended to me, but I am so happy it was. Subbed, and cheers!
@kaister901 5 ай бұрын
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.
@uub_ 11 ай бұрын
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
@LithiumThiefMusic 11 ай бұрын
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
@tomn.9987 11 ай бұрын
Never would have thought I would be watching a video about bouncing magnets and enjoy it. You have earned a sub.
@AndyChamberlainMusic 11 ай бұрын
that was a lovely watch!
@dracorey 11 ай бұрын
this made my brain happy, subscribed !
@TheDanielVictorLA 10 ай бұрын
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.
@BenjaminEhrlich272 11 ай бұрын
Thank you for making content like this. It makes me happy.
@mkb6418 11 ай бұрын
From theory to experiment and proof. Excellent video, that shows the scientific method into action.
@scottr2624 11 ай бұрын
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.
@Eliasmizuki 11 ай бұрын
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
@amitakler4710 10 ай бұрын
Just found this channel immediately subscribed
@jakipop3397 11 ай бұрын
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.
@brenobarbosa3489 11 ай бұрын
Absolute madman content, love it, had to get my magnets off the shelf
@ashtonsnelgrove2893 11 ай бұрын
I love that the example music at 8:15 is the infamous "the lick".
@MetalManiak93 11 ай бұрын
Amazing topic my dude. I always think about this kind of stuff that we take for granted. Got my subscribe!
@Jimmy-H 11 ай бұрын
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
@user-iq6en8ed7q 11 ай бұрын
this is my first video of this channel and I love the name of the channel:° unironically :3
@TheBreadPirate 11 ай бұрын
I understand nothing about complicated math, but I like this sound so I watched this whole thing.
@blackamaterasuflame 7 күн бұрын
I will be describing my bank account as "just shy of infinity" from here on out.
@deliriouscheeto 10 ай бұрын
Omg I had these magnets as a kid and I frikkin loved them!
@Zyrchin 11 ай бұрын
For functionally no reason you have done some excellent work and that's wonderful👍🏻
@minimoth 11 ай бұрын
Ive never at all been interested in physics and its 2 am currently but I am paying full attention to this video
@Sakrosankt-Bierstube 11 ай бұрын
I didn't understand anything after 3:00 but i somehow love videos like that.. about physics, chemistry, engineering. I Just love it.
@MannFace51 11 ай бұрын
Can i just say, thank you so much for using a dark background with white text. So much easier on the eyes 👍
@HimanXK 11 ай бұрын
These videos really scratch that particular brain itch
@ipeaceful6 11 ай бұрын
so cool! thank you for making these videos
@meme6793 11 ай бұрын
It would be nice to hear sound that fitted curve and its harmonics make.
@insooklee4294 11 ай бұрын
Great vid!
@syncalcal6802 10 ай бұрын
I literally just started playing with these maybe a few weeks ago crazy
@inakioalgoasi3693 11 ай бұрын
this is one of the best channels on KZfaq
@lucifersenpai6251 8 ай бұрын
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💋
@notjerrett 11 ай бұрын
Loved this one!
@adityakhanna113 11 ай бұрын
This was really cool!
@fawal.1997 11 ай бұрын
Wonderful video. Very interesting.
@ocelothayes9452 11 ай бұрын
As soon as I heard it after you asked the question. . I knew that’s what your sound bar would look like lol 😂
@stefanguiton 11 ай бұрын
Great video!
@zacharymesecke9638 11 ай бұрын
I love watching people do cool stuff
@bigbluebuttonman1137 11 ай бұрын
I had these. Miss em.
@PlasmaWisp100 11 ай бұрын
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.
@dylanswanson4271 11 ай бұрын
broo this is awesome, i just started using the jupyter software to build a baackground noise decoder with ML :3
@simonnygaardjensen1367 11 ай бұрын
Congrats on the 100K subs!
@physicsforthebirds 11 ай бұрын
Thank you for helping me get there!
@finlayrivers9839 11 ай бұрын
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
@deadhookerproductions1068 11 ай бұрын
Havent even watched this video i literally saw the thumbnail and im gonna bet money the amount of collisions those things have is like constantly in the pattern of pi or something
@Harpy-with-Legs 10 ай бұрын
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
@Bedogg25 7 ай бұрын
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
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