The Barkhausen Effect Lets You Hear Magnetic Domains

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The Action Lab

The Action Lab

Күн бұрын

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I show you the Bakrkhausen effect in which you can hear magnetic domains shifting inside metal.
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Пікірлер: 812
@Tom5TomEntertainment
@Tom5TomEntertainment 2 жыл бұрын
The Barkhausen effect had a lot less to do with dogs than I thought
@rudolphclaus9565
@rudolphclaus9565 2 жыл бұрын
....😂
@FingerprintGamer
@FingerprintGamer 2 жыл бұрын
I guess the algorhytm listened bark and started showin pedigree ads here Not even kiddin i relly got a pedigree ad
@lightspeed-mecharena5929
@lightspeed-mecharena5929 2 жыл бұрын
Bærk
@oggy107
@oggy107 2 жыл бұрын
lmao
@todaywefly4370
@todaywefly4370 2 жыл бұрын
Class clown. 😏
@ajtheanomaly9764
@ajtheanomaly9764 2 жыл бұрын
I can’t believe I’m hearing atomic structures move that’s fuckin awesome
@PlatinumH.2
@PlatinumH.2 2 жыл бұрын
lol xD
@Alvan81
@Alvan81 2 жыл бұрын
It also shows how our perception of 'solid' matter is an illusion.
@Alvan81
@Alvan81 2 жыл бұрын
@*S U C T I O N* Ok. The video of the particles implied some physical "movement". I mistook the changes in the material for movement. However there are other observations and methods that validate my comment about 'solid' objects, correct? 🙂
@otinane89
@otinane89 2 жыл бұрын
@@Alvan81 The fact that the magnetic domain switches polarity doesn't prove that the material is not solid, or that our understanding of what is solid, is false. It just proves that solid materials and generally matter, can have properties that we don't know or easily understand, a good example is quantum spin, that is the way matter interacts with electromagnetism. Don't forget that most materials do not have magnetic domains.
@AndreasDelleske
@AndreasDelleske 2 жыл бұрын
@@Alvan81 I would rather say the word "illusion" needs a lot of context :)
@bluefoxf5963
@bluefoxf5963 2 жыл бұрын
8:28 - the most important part of video, this show that sound comes from switching domains NOT from magnet flying around the coil ( thus it also generate changeable magnetic flux which generate small current). It means that flux change rate is the greatest when domains are switching inside iron bar...
@antonk.653
@antonk.653 2 жыл бұрын
I would dispute (or prove) that actually. I would make a test with just the coils without the Iron bar inside, and subtract that noise from the experiment. The result would be mostly the same, but it would also shut up all the smartasses talking about magnetic induction (me included).
@TheMlg556
@TheMlg556 2 жыл бұрын
@@antonk.653 yeaah I agree, there must be a significant amount of induced current with that number of loops and a bigass strong magnet moving around
@PlayNowWorkLater
@PlayNowWorkLater Жыл бұрын
Another to totally agree. At first I wasn’t convinced, it seemed like you were just creating electrical current as the magnet waved across the coiled wire, but as soon as you showed the part about approaching the end with one pole, then repeating it with no noise, and then flipping it and the noise returned. Super cool experiment!
@t.n.t1229
@t.n.t1229 Жыл бұрын
@@antonk.653 i don't think we can easily subtract that noise, because the coil with and without iron bar have different inductive reactance, it means the noise from the inductive current of the coil with iron bar still different from the noise without iron bar we can't just subtract it.
@Regularsshorts
@Regularsshorts 2 жыл бұрын
You are best science teacher I could ever get.
@HANNYAFACE
@HANNYAFACE 2 жыл бұрын
And neil Tyson
@Regularsshorts
@Regularsshorts 2 жыл бұрын
Yeah and veritasium?
@Regularsshorts
@Regularsshorts 2 жыл бұрын
Arvin ash?
@Regularsshorts
@Regularsshorts 2 жыл бұрын
😁
@jayneshpatel7925
@jayneshpatel7925 2 жыл бұрын
I watch all of them 😀
@zipityzap7675
@zipityzap7675 2 жыл бұрын
So that’s how they made the Minecraft sand sound.
@ivander1511
@ivander1511 2 жыл бұрын
@I care Don't care, didn't ask
@bhuvaneshwaranm5798
@bhuvaneshwaranm5798 2 жыл бұрын
@@user-kc1oy4hq9u don't just report the comment report the channel too. He's spamming all over.
@droidksn6372
@droidksn6372 2 жыл бұрын
Ok reported this video and channel for spamming.
@zipityzap7675
@zipityzap7675 2 жыл бұрын
@@droidksn6372 @I care is a bot .
@themonkeyman2547
@themonkeyman2547 2 жыл бұрын
There's industrial test machines based on this phenomenon. The can determine grain size and density of steel, and thereby infer the grade and hardness. We used them in an auto plant to check gears for proper heat treat and composition without running a destructive hardness test
@thestraynetwork
@thestraynetwork 2 жыл бұрын
Awesome
@DefianceGJ
@DefianceGJ 2 жыл бұрын
Anything with magnets always intrigued me! My favorite is showing magnetic field lines with that dish and light setup you had! I showed my little sister that and now she’s looking at magnetic fields of everything😂
@1GLO919
@1GLO919 2 жыл бұрын
what video was that?
@drderpphd
@drderpphd 2 жыл бұрын
@@1GLO919 I think this one ... kzfaq.info/get/bejne/fdZ1nJCbuNPHn3U.html
@1GLO919
@1GLO919 2 жыл бұрын
@@drderpphd thanks man
@coolbionicle
@coolbionicle 2 жыл бұрын
I love how it sounds like shifting sand around. It really demonstrates the particulated nature of magnetic domains.
@androidphone1901
@androidphone1901 2 жыл бұрын
Exactly!
@IIswagdelicious
@IIswagdelicious 2 жыл бұрын
I guarantee when it was time for science projects to be presented in his class, everyone looked forward to him presenting
@Vitotcher
@Vitotcher 2 жыл бұрын
In 9 minutes I actually learned about this topic more and understood it better than back in the university, where we would spend 2 hours listening to a boring lecture and end up not understanding anything about the magnetic domains This is one of the reasons I love The Action Lab so much, I wish schools had such visual and demonstrative lectures like videos on this channel
@xDR1TeK
@xDR1TeK 2 жыл бұрын
Theory and implementation are always funny. Science goes head over heels to prove things mathematically, implementation is just copper wire wound up on an iron core and voila.
@netx421
@netx421 2 жыл бұрын
You're leaving out the transistor sir.
@xDR1TeK
@xDR1TeK 2 жыл бұрын
@@netx421 indeed. First solid state device was a stone with pin wire touching it.
@netx421
@netx421 2 жыл бұрын
@@xDR1TeK yes, germanium (edit: Galena). The coil is an inductor, when the magnetic field changes in the rod at the core another magnetic field is generated and opposes it in the coil, this in turn creates a potential used to trigger the transistor in the amplifier, generating a static click.
@beactivebehappy9894
@beactivebehappy9894 2 жыл бұрын
@@xDR1TeK like that we can generalize every metal to trivial things. Like you been say the atom bombs were made from green white stones found in rocks. For most of the current advancements, the things were actually known fundamentally before they were discovered to be known. You can actually find many elements missing from the first periodic table which were predicted to be there. Voila they were later discovered to exist!! Having said that I agree to you you but still it took a lot of observation and study to go past simple concepts like metals and rocks
@xDR1TeK
@xDR1TeK 2 жыл бұрын
@@beactivebehappy9894 at least theory had to come after observation, and then the theory would assist to fill in the blanks. Still, the implementation is far simpler than theory, at least if you allow a margin for error. This is something I experience a lot while designing Circuits. there are times, theory prevails like when you design antennas. if you try to wing it all day long without pencil and paper, the antenna still won't work. Voila is defeated. 😜
@thomashan4963
@thomashan4963 2 жыл бұрын
I love how you are teaching the basic of electromagnetism in the most simplest way. ❤️
@Ash-ft5su
@Ash-ft5su 2 жыл бұрын
At this point I think you’re responsible for about half of my education.
@RADCreativeArt
@RADCreativeArt 2 жыл бұрын
This would be extremely interesting to the paranormal investigators. I always questioned the white noise boxes.
@AmaroqStarwind
@AmaroqStarwind 2 жыл бұрын
That implies that the ghosts are electromagnetic. You ever notice how ghosts appear on film-based photography, but not as easily on analog video, and not at all on digital cameras? I think part of that comes down to electromagnetic interference and the physical properties of light.
@RADCreativeArt
@RADCreativeArt 2 жыл бұрын
@@AmaroqStarwind I’ve been investigating for about 15 years and it’s always a surprise to see what is caught on camera and audio. My first KZfaq video clips was one of them. I have it posted up on my channel. My daughter passed away suddenly in May and she came to me to tell me to keep going. She even knocks into the camera I was filming with.
@tronalddump2267
@tronalddump2267 2 жыл бұрын
@@AmaroqStarwind it's all the same photons though
@tronalddump2267
@tronalddump2267 2 жыл бұрын
@@RADCreativeArt overactive imagination
@AmaroqStarwind
@AmaroqStarwind 2 жыл бұрын
@@tronalddump2267 Electronics and film record light differently. The electronic sensors in a video camera or a digital image sensor only respond to certain wavelengths of light, and just turn a pixel on or off based on how intense that light is. Film reacts differently to light because it's an actual physical medium. Technology Connections has a video about it if you're curious.
@slesinski57
@slesinski57 2 жыл бұрын
This is fantastic. I am definitely going to show this demo to my AP physics c students. So cool. Thanks for making me a better teacher.
@fmdj
@fmdj 2 жыл бұрын
That was a particularly good one, love how you managed to demonstrate invisible microscopic things with just household items
@skougi
@skougi 2 жыл бұрын
Always enjoy this channel’s content. Thank you for posting, and all of the work (behind the scenes) we can’t watch. Also, these vids that aren’t rehashing all the usual “science” topics are one hell of a breath of fresh air I didn’t know KZfaq needed. bravo, encore!
@Rutetid
@Rutetid 2 жыл бұрын
Dude it feels really good when you can relate the things what you studied at school with this and it all sums up , live your videos
@willcollins9470
@willcollins9470 2 жыл бұрын
I've been in electronics a long time and i keep seeing stuff here I've never seen before. thank you.
@rgbii2
@rgbii2 2 жыл бұрын
Enjoyed the video. The magnet in the cup was a great way to visualize the small magnets in metal!
@Kennedy-id8fg
@Kennedy-id8fg 2 жыл бұрын
this is so incredible you explain cool complicated things so diligently!!
@nerdexproject
@nerdexproject 2 жыл бұрын
I love how you come up with all these fascinating experiments!
@antonk.653
@antonk.653 2 жыл бұрын
The demonstration with the plastic cup blew my mind. That is neat for nerdy funfacts during parties, but also extremely helpful for actual physics classes.
@RandyKing314
@RandyKing314 2 жыл бұрын
Cool demo! Also, thanks for the part with the magnet in the cup
@WouterVerbruggen
@WouterVerbruggen 2 жыл бұрын
The overall flux change when moving the magnet closer to the solenoid will also induce a signal. This however is of much lower frequency and therefore either not audible, or a bass-like hum you won't notice. In applications of this technique, it is easily filtered out.
@hashbrown777
@hashbrown777 2 жыл бұрын
Yeah, I would've much preferred his control being another winding around a wood stick or something, not just disconnecting the circuit entirely
@TheRealDefacto
@TheRealDefacto 2 жыл бұрын
He actually does the control by bringing same pole of the magnet again and again and there is no noticeable noise. So induction ain’t it.
@WouterVerbruggen
@WouterVerbruggen 2 жыл бұрын
@@TheRealDefacto Read the second sentence of my comment and you'll see that I explain exactly why you don't hear that.
@TheRealDefacto
@TheRealDefacto 2 жыл бұрын
Wasn’t replying to you dude, I just replied to hashbrown’s comment.
@WouterVerbruggen
@WouterVerbruggen 2 жыл бұрын
@@TheRealDefacto my bad, there was no "@xxx" so that implies it was a response to the main thread.
@thoreberlin
@thoreberlin 2 жыл бұрын
This is one of the best ferromagnetism classes out there! Wish i had had this, when when i started at the university.
@SomebodysNephew
@SomebodysNephew 2 жыл бұрын
Man. I somehow missed this one. Good video. Appreciate the updates .
@JakeHarris0
@JakeHarris0 2 жыл бұрын
Maybe your best short. Great explanation!!!
@dandeeteeyem2170
@dandeeteeyem2170 2 жыл бұрын
Seriously dude, your videos explain so many fundamental concepts in science better than anyone else out there. They need to show your videos in schools as a teaching aid! I wish KZfaq had been around when I was in school 🙂
@GamesTutorials_
@GamesTutorials_ 2 жыл бұрын
I love each of your experiments, I always learn with each of them. Thanks.
@emmanueloverrated
@emmanueloverrated 2 жыл бұрын
That was truly a very interesting video James. Thank you very much.
@StresstechGroup
@StresstechGroup 2 жыл бұрын
Cool demonstration! We actually manufacture quality test equipment for ferromagnetic parts based on this phenomenon. Instead of bar magnets we use AC magnetic field to sinusoidally excite the domains. The Barkhausen noise is then read-out with a pick-up. Based on the signal amplitude one can measure the hardness of the sample without destroying it.
@gianbaumann7131
@gianbaumann7131 2 жыл бұрын
hey man i love your videos so mutch cuz its like knowledge i will probably never use but its also sooo entertaining. you 100% got me on every of your videos
@ganko2240
@ganko2240 2 жыл бұрын
Amazing, I had always wondered about domains and this just nails it!
@wulfseig1864
@wulfseig1864 2 жыл бұрын
I had the best Science teacher in school and you remind me of him. Science class was my favorite. With your channel it still is my favorite.
@OnTheRiver66
@OnTheRiver66 2 жыл бұрын
I always learn something from your videos. I thought I knew all non destructive tests for metals but did not know about this one.
@alifetomake
@alifetomake 2 жыл бұрын
Interesting! Now, could you tell me why some of my tools become magnetic with time? Is this related to this effect?
@ronaldkristijanto3796
@ronaldkristijanto3796 2 жыл бұрын
If you "rub" a piece of non magnetic iron with a magnet (with one pole one direction) it will "straighten" those small magnetic domains and the iron will become magnetic.
@rllysaltsmybananas
@rllysaltsmybananas 2 жыл бұрын
But it won’t last, iron is not a permanent magnet; steel is.
@ronaldkristijanto3796
@ronaldkristijanto3796 2 жыл бұрын
I said "tool" instead of iron earlier and I edited it because it can mean something else LOL ...
@prakharmishra3000
@prakharmishra3000 2 жыл бұрын
@@ronaldkristijanto3796 XD
@ther701
@ther701 2 жыл бұрын
Maybe due to Earth's magnetic field. It might be inducing little permanent magnet property.
@theresamclaird1572
@theresamclaird1572 2 жыл бұрын
Fascinating - great video!
@ProjectPhysX
@ProjectPhysX 2 жыл бұрын
Wow this is so cool! I didn't know about the Barkhausen effect before. I always learn something on this channel :)
@vinitapandey7267
@vinitapandey7267 2 жыл бұрын
Cool man!!! Understood the concept of electromagnetic induction in a different and creative way..👍👍😄
@alyn7d7
@alyn7d7 2 жыл бұрын
Action lab is my #1 favorite channel to watch on KZfaq.
@petergoestohollywood382
@petergoestohollywood382 2 жыл бұрын
I’m still mind boggled from when I first learned about how in solid metal depending on temperature the crystal structure changes entirely ... and apparently even magnetic domains. Awesome experiment, gonna recreate it with my amp now haha. Thank you for being awesome!
@marwansallouta2101
@marwansallouta2101 2 жыл бұрын
Amazing experiment, Thank you.
@michaelmoran2059
@michaelmoran2059 2 жыл бұрын
Your videos never cease to amaze me! Ridiculously brilliant content! How you make it easy to understand is beyond me but you do it brilliantly!! Top Content sir! Keep it up!
@johnmelon45
@johnmelon45 2 жыл бұрын
I did not know that. Thanks mate!
@oladosvinzuella6998
@oladosvinzuella6998 2 жыл бұрын
this is the most interesting episode of the action lab I have ever watched wooooooooooooow thank you so much
@eplumer
@eplumer 2 жыл бұрын
That was an excellent explanation
@justablank1184
@justablank1184 2 жыл бұрын
You are always cool! I have learnt so much already!
@yadhu4379
@yadhu4379 2 жыл бұрын
You are great sir. Truelly waiting for your next video.. Love from India
@eeriklilles9323
@eeriklilles9323 2 жыл бұрын
Great demonstration
@pbp6741
@pbp6741 2 жыл бұрын
Excellent demonstrations.
@JerryMlinarevic
@JerryMlinarevic 2 жыл бұрын
Excellent demo.
@JoeySonal
@JoeySonal 2 жыл бұрын
So well explained!
@yello171
@yello171 2 жыл бұрын
Holy shit! I thought I couldn't understand Ferromagnetism better than I already do. But this demonstration, it's just something else.
@Ing_Failure
@Ing_Failure 2 жыл бұрын
-what are you doing? -listening magnets... -w h a t ?
@AmitSingh-sf5qp
@AmitSingh-sf5qp 2 жыл бұрын
I always touch if notification comes for your new video upload . I never miss it's EPIC no..
@TheGeenat
@TheGeenat 2 жыл бұрын
My favorite part was when you showed that you need to change the polarity of the magnet 🧲 to continue creating the white noise once the piece of iron was magnetically oriented. That was awesome.
@yaksheenkumar6270
@yaksheenkumar6270 2 жыл бұрын
You are the best teacher I have ever learn from
@AiAiTheMonkey
@AiAiTheMonkey 2 жыл бұрын
The research group I'm in actually works on a model that describes this behavior. The behavior is known as "well-organized criticality" and we describe it with a model called "avalanche slip statistics theory." This model actually applies to a ton of things such as earthquakes, ferromagnetic switching (Barkhausen noise), and even examples of stellar variability (what I work on). It's really cool stuff!
@JayElectroTech
@JayElectroTech 2 жыл бұрын
Best and simplest Example. 👏👏👏👌
@gearguy65
@gearguy65 2 жыл бұрын
This is how an electric guitar pickup works!
@westonding8953
@westonding8953 2 жыл бұрын
Wrapping that up was a genius illustration of magnetic domains!
@wasilwestside
@wasilwestside Жыл бұрын
Hi! Great video. I really enjoyed watching it and also gained valuable knowledge related to BN. Can you do one on magnetoacoustic emission as well?
@VivekYadav-ds8oz
@VivekYadav-ds8oz 2 жыл бұрын
How do you know it's not from the induced current of neodymium magnet? EDIT: Should've waited till 8:38
@AbsoluteAbsurd
@AbsoluteAbsurd 2 жыл бұрын
Lol
@TheRealDefacto
@TheRealDefacto 2 жыл бұрын
Lol same here
@McDylanNuggets
@McDylanNuggets 2 жыл бұрын
This is amazing to contemplate.
@greengonzonz
@greengonzonz 2 жыл бұрын
I'm subbed to this channel but don't always watch every vid. This video however had me fascinated. 👍💙
@forever-kq6mf
@forever-kq6mf 2 жыл бұрын
Man u are awesome!keep spreading education ❤️😀👍
@aaronrappleyea8202
@aaronrappleyea8202 2 жыл бұрын
Dang, the way he visualized this, opened another path in my mind
@Bindu369
@Bindu369 2 жыл бұрын
Wow amazing 😯💫I think action lab is best sci-fi channel ever see 😯👑
@yerranitesh3721
@yerranitesh3721 2 жыл бұрын
Literally, I wrote magnetism and materials for sensors Exam today morning. Now I see this video and you said everything I studied. ✌️✌️
@ShomeAvi
@ShomeAvi 2 жыл бұрын
Respect comes naturally for you sir.
@omsingharjit
@omsingharjit 2 жыл бұрын
It's pretty interesting when you are testing it
@brinkman4925
@brinkman4925 2 жыл бұрын
Pretty cool explanation
@Owen_loves_Butters
@Owen_loves_Butters 2 жыл бұрын
This explains so much
@AmitSharma-xu8bu
@AmitSharma-xu8bu 2 жыл бұрын
Amazing experiment
@matthewperlman3356
@matthewperlman3356 2 жыл бұрын
I found this effect many years ago, but I did not know the correct cause; at the time I had thought that it's was just the amp reacting badly to the generated DC voltage which was likely above it's designed input range. Thanks for explaining the real reason for this.
@eelcohoogendoorn8044
@eelcohoogendoorn8044 2 жыл бұрын
I love simple physics experiments like this, especially ones that I had never heard of before.
@NateCrownwell
@NateCrownwell 2 жыл бұрын
Super cool, Thank you :)
@stepananokhin693
@stepananokhin693 2 жыл бұрын
Wow! That's really cool!
@brianwilson9501
@brianwilson9501 2 жыл бұрын
Breaks my brain 🧠 lol Sort of makes it look as though even some of the hardest objects are still fluids / fluid like. Always moving
@beactivebehappy9894
@beactivebehappy9894 2 жыл бұрын
7:20 the asmr we never needed but god are we happy with that!!!
@tungapalliashish1306
@tungapalliashish1306 2 жыл бұрын
I am very excited to know about what black energy means. I hope u will make a video on that. Thank you 😊
@Roust7
@Roust7 2 жыл бұрын
Part of your demonstration waving magnet near your coil also induced alternative current in the coil and the noise you hear on your amp. You have separate the movement of your magnet causing current in the coil
@lifesoldier
@lifesoldier 2 жыл бұрын
someone needs to make an album with this
@nileshbharti9144
@nileshbharti9144 2 жыл бұрын
Extremely amazing 😳
@The_Kiosk
@The_Kiosk 2 жыл бұрын
Love that Barkhausen!
@GhostinTube
@GhostinTube 2 жыл бұрын
Its a scary coincidence that I just wrote my uni exam about domains in ferromagnetic materials today and you post a video on the same topic
@TysonJensen
@TysonJensen 2 жыл бұрын
Love the auto captioning “bark housing effect.”
@202Electrics
@202Electrics 2 жыл бұрын
with the wire around that rod you can "hear" electronics do their job as well if you keep the rod close to your phone, computer or anything with microchips. EMF is kinda interesting.
@maniacmemes5746
@maniacmemes5746 2 жыл бұрын
Thanks for the information
@BlazinLow305
@BlazinLow305 2 жыл бұрын
It's not interesting when I'm trying to play high gain tones through my guitar amp, lol. Power can also apparently be "dirty" as well which is why my guitars are so noisy in this new house.
@whatitis5646
@whatitis5646 2 жыл бұрын
@@BlazinLow305 you can get a special capacitor bank to “clean” the power and use xlr cables to protect high gain audio from interference
@bobann3566
@bobann3566 2 жыл бұрын
Churning up the ether. Love it.
@jaymorris3468
@jaymorris3468 2 жыл бұрын
The excitement and white knuckle drama kept me tense and my teeth grinded together, you won't be disappointed, TRUST ME! 😁
@PlatinumH.2
@PlatinumH.2 2 жыл бұрын
Could you magnify the suns light on the electroscope to see if it has enough energy to strip of electrons
@acockatiel3577
@acockatiel3577 2 жыл бұрын
@I care no
@lightspeed-mecharena5929
@lightspeed-mecharena5929 2 жыл бұрын
I want to see it
@PlatinumH.2
@PlatinumH.2 2 жыл бұрын
@Dreadlord yup, me to
@jeanwanchen1
@jeanwanchen1 2 жыл бұрын
This is crazy. Very cool.
@Reliquancy
@Reliquancy 2 жыл бұрын
Barkhausen sounds like what they might call a dog pound in Germany.
@spiderdude2099
@spiderdude2099 2 жыл бұрын
That’s really cool how you can use the technique to test for metal defects.
@Amused_Comfort_Inc
@Amused_Comfort_Inc 2 жыл бұрын
I wasnt expecting him to pull out an Actual amplifier 😂
@illogicmath
@illogicmath 2 жыл бұрын
Let alone one for electric guitar
@AbsoluteAbsurd
@AbsoluteAbsurd 2 жыл бұрын
Well it makes sense
@yuribruxel6074
@yuribruxel6074 2 жыл бұрын
You have a coil in a changing magnetic flux. What your amplifier is perceiving is the generated electric field from the coil, aka voltage.
@Nyocurio
@Nyocurio 2 жыл бұрын
Why then does he have to flip the magnet for the effect to continue?
@erstwhilegrubstake
@erstwhilegrubstake 2 жыл бұрын
1:30 What a twist!
@jadendias9786
@jadendias9786 2 жыл бұрын
Nice one
@kreynolds1123
@kreynolds1123 9 ай бұрын
I wonder if it may be used to seed a random number generator efficently.
@vincevillalobos777
@vincevillalobos777 2 жыл бұрын
Very scientific :D Imma try it that's why I followed you :D
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