These are the best physics video's in the world. They're simply perfect. Keep up the good work Eugene!

@EugeneKhutoryansky

2 жыл бұрын

Thanks for the compliments.

@JohnVKaravitis

2 жыл бұрын

The background music is ANNOYING.

@teslathejolteon8007

2 жыл бұрын

@@JohnVKaravitis I think it's great, I even listen to it while studying.

@JohnVKaravitis

2 жыл бұрын

@@teslathejolteon8007 Teacher's pet!

@ilickcatnip

2 жыл бұрын

@@JohnVKaravitis no

This is truly one of the best physics channels that ever existed!

@kennethhicks2113

2 жыл бұрын

Yes, simple, concise, excellently animated and narrated. I have pasted these on to my kids for years (while in school with varying teachers...). My youngest is past 101 but this is kinematics in a nutshell. Eugene does best in teaching imo so this is #1 for that aspect. I frequently utilize her methods, ty.

@EugeneKhutoryansky

2 жыл бұрын

Thanks for the compliments Michael and Ken.

Omfg I was always wondering why when I spin my smartphone around the "horizontal" axis across the screen it would not spin as nicely as with the other two axes and now I know literally blew my mind

@KalebPeters99

2 жыл бұрын

Wow that is such a great example! One that anyone can try haha

@jongyon7192p

2 жыл бұрын

One of the best things about everyone having smartphones is it's so easy to make anyone test this. Hopefully gets a lot of kids interested in math and science in general. (Notice how the first example in the video looks like a smartphone!) *...Smartphones have no other value* (im j/king dw lol)

@duke1281

Жыл бұрын

You watched physics girl, didn't you. LOL

You sir are the absolute most dedicated educator ever! The time it must take for you to make these animations must be incredible, (i'm a professional 3d animator myself). We can talk about rendering - it isn't pixar. But your animations and explanation takes understanding to a new level. And the amount of keyframe animation i can tell you have done, this work is better than any pixar.

@EugeneKhutoryansky

2 жыл бұрын

Thanks for the compliments.

Fun fact the name for the skateboarding trick that does this is a relatively obscure maneuver known as an "impossible" whereas rotations along the easy axes are two of the most basic tricks, kickflip and shuv-it.

@miej89

2 жыл бұрын

:O mind blown

@MDMAx

2 күн бұрын

Don't you mean hardflip instead of impossible? If roll = kickflip; yaw = shove-it; then Hardflip = pitch? So basically hardflip ain't that hard. There's no way the board can turn a full rotation around y-axis. That's why it's impossible :P You make it possible by controling the centre of mass with your foot and help the board turn those extra "theoretically impossible" 180 degrees. It's natural for objects to start spinning about every axis when rotated around the unstable axis, a skateboard is no exception. I'm sure surf-board will do the same thing if ever attempted on a trampoline, for example.

I feel very lucky to have access to your great videos during my high school. For insights and intuition of the concepts I come every time to you and am very pleased achieve that . 😌

@EugeneKhutoryansky

2 жыл бұрын

I am glad my videos are helpful. Thanks.

@prashantbharti2650

2 жыл бұрын

@@EugeneKhutoryansky 😊i wish to learn the concepts with deep understanding to be able to explain like you to others . Again thank you .

I pre-liked the video, then watched it and wished I could like it again. Great work!

@EugeneKhutoryansky

2 жыл бұрын

Thanks. I am glad you enjoyed my video.

Thank you. It'd be nice if you could highlight the rotation direction somehow, maybe by labelling the spheres on the same axis as A and B, or by colouring them differently, so it'd be easier to track the rotation direction when observed say from point A towards B. Otherwise it's not obvious that rotation directions at 2:05 and 2:30 are opposite, to me at least.

@shlok3172

2 жыл бұрын

Yes I was having the same problem

@EugeneKhutoryansky

2 жыл бұрын

Yes, in hindsight, I should have colored the two spheres at the end of each axis differently. Unfortunately, once a video is uploaded to KZread, it can't be edited.

@elle-hk

2 жыл бұрын

@@EugeneKhutoryansky on the positive side, maybe the lack of this visualisation is what forced me to think carefully and in the end helped to understand the topic much better. In any case, thank you again for your videos!

The best youtube channel by far. It is like an LSD, and I feel high while watching the videos. They give me some kind of a trip. Btw, I don't know the narrator, but the voice is quite impressive. Thank you all with all my heart for making science this attractive.

@EugeneKhutoryansky

2 жыл бұрын

Thanks for the compliments.

Glad I discovered you. I am a beginner cosmologist attempting at bridging astronomical and astrological innovations and this helps. I think Uranus when I see this.

Not only does this finally make sense, but you unlocked something that's helped me finally understand quaternions as well. Thank you!

@EugeneKhutoryansky

2 жыл бұрын

I am glad my video was helpful. Thanks.

Huh! Either a strange coincidence, or its moment of inertia day: you uploaded on the same topic as Veritasium! In any case, I get very excited when I see uploads from my two favorite physics channels :)

@EugeneKhutoryansky

2 жыл бұрын

I haven't watched Veritasium's video. It appears to be a video about bowling.

I have to admit, I didn't understand a thing.

The best ever channel education. ❤️❤️

@EugeneKhutoryansky

2 жыл бұрын

Thanks for the compliment.

Best kickflip tutorial. Thank you.

Never stop uploading.

@EugeneKhutoryansky

2 жыл бұрын

More videos are on their way.

This is quite possibly the best channel on all of KZread.

@EugeneKhutoryansky

2 жыл бұрын

Thanks for the compliment.

These Videos are awesome , I have been referring to these videos from the past 3 years.... Keep up the great work Eugene.... and also can you please make more videos of " Newtonian Mechanics ".. Your classical was great...

@EugeneKhutoryansky

2 жыл бұрын

Thanks for the compliments. I am glad you like my videos. You are probably already aware of this, but I have a playlist titled "Mechanics Videos in Order" on the "Playlists" tab of my KZread home page. Thanks.

I just Love your videos ❤️👍 Great job.

@EugeneKhutoryansky

2 жыл бұрын

Thanks for the compliments. I am glad you like my videos.

This is great as always Eugene! I wonder if including some x, y, z graph lines might help clarify the directions of rotation? Maybe even showing the plane of rotation briefly cutting the arrows to visually simplify a little? Thanks for your work!

@KalebPeters99

2 жыл бұрын

To be clear, it's not that hard to follow but this may make it even easier!

Someone finally found a way to do this! Not surprised it was you, Eugene...

@EugeneKhutoryansky

2 жыл бұрын

Thanks.

Just love your narration and explanation. Please make some videos on Digital Circuits and Micro Processors, Moore's Law

@EugeneKhutoryansky

2 жыл бұрын

Thanks for the compliments. I have a video on digital circuits titled "Logic Gates from Transistors" at kzread.info/dash/bejne/hYtmpNmcYZrFp6Q.html

@PiyushSharma-hy2ej

2 жыл бұрын

@@EugeneKhutoryansky I watched them already. I am saying about Micro Processors like INTEL 8085 and about Moore's Law

Thanks a lot my mentor for making this video

@EugeneKhutoryansky

2 жыл бұрын

Thanks.

Hi, I am a big fan of your Channel ! ! Hope all the Koreans watch this video!

@EugeneKhutoryansky

2 жыл бұрын

I am glad you like my videos.

Thanks for another good physics video.

@EugeneKhutoryansky

2 жыл бұрын

Thanks. I am glad you liked my video.

Amazing what a collision with a single air molecule can entail.

Hi from India 👋

@PhysicsYogi24

2 жыл бұрын

Hi 🥰

@Hanumanji246

2 жыл бұрын

*Me too from india*

Ah this is the kinda topic I was excited to see you animate in some comment I made recently.

I love you. I legit love you. You are a great human being.

@EugeneKhutoryansky

2 жыл бұрын

Thanks!!!

That is a more intuitive explanation than the ones from the videos from Veritasium and Matt Parker! Nice job.

@EugeneKhutoryansky

2 жыл бұрын

Thanks.

My head is spinning unstable after watching this explanation, appreciate your efforts though!

This knowledge is unsettling to me for reasons best left unsaid, but still love your videos sir!

Awww very curious to watch your videos ❤️❤️

@EugeneKhutoryansky

2 жыл бұрын

I am glad you like my videos. Thanks.

Hey Eugene I just learned you have an animal rights channel. Respect 100. Also, this video was awesome.

@EugeneKhutoryansky

2 жыл бұрын

Thanks. Though, that is an animal rights website (not channel). And thanks for the compliment about my video.

@maxwellsequation4887

2 жыл бұрын

@@EugeneKhutoryansky yeah, saw that. I also am a vegan, and it's really sad seeing what happens. I appreciate your efforts on that website and I can't thank you enough for the masterpieces you have produced on this channel.

@EugeneKhutoryansky

2 жыл бұрын

That's awesome that you are vegan. And thanks for the compliments.

Interesting, always a race to the top or the bottom here!

Thank you ❤

Great Interpretation.

@EugeneKhutoryansky

2 жыл бұрын

Thanks.

Awesome! Do chemistry next ! 😇

Great video!

@EugeneKhutoryansky

2 жыл бұрын

Thanks. I am glad you liked m video.

Seems as if when the large masses rate of change in orientation reaches the speed of rotation is when orientation starts to dominate and change its position drastically i.e. flipping.

Could you treat each axis as its own gyroscope and calculate the combined gyroscopic action? Could one use Fourier to create a model?

Gotta leave in 14 minutes *sees 13 minute video from the best physics channel Perfect

@EugeneKhutoryansky

2 жыл бұрын

Thanks for the compliment about my channel.

This whole video is excellent for understanding the concepts of: 01. Precessing of hydrogen atoms (e.g. spinning like a top) and; 02. Signal void, in magnetic resonance imaging (of the brain, and of other body organs). Thank you so much for offering this marvelous presentation.

this one paired up quite nicely with Veritasium's bowling video 😁. Explains why bowling bowls with different cores spin differently

Just a little bit of chaos can throw off stable momentum but I wish there was an animation that shows the chaotic motion. Its hood seeing arrows but I'd like more realistic motion animations as well as the arrows of course.

It is good and rigorous but it could be hard to follow and I have to rewind very often to understand what's going on. it might be easier to follow if the animation follows the word you are saying. like when you say "this momentum wants to..." in 2:23, the arrows can be highlighted by a halo behind it to "sync" the animation with the narration and in 9:43, the sentence is so long and contains so many colors in it that it is hard to follow. highlighting the vectors when you mention those vectors and their corresponding axis can help with the situation, and maybe choose colors that follow the size of the axes like black-grey-white or red-white-blue, red-yellow-blue is sort of rainbow color but it could be clearer also at 9:54, about the new rotation (because the rotation in the direction of the other two axes exist) being the same and opposite to the existing blue rotation (caused by an air molecule), you could show both of them at the same time to be more clear, you could also add some pattern on the arrow of the new rotation like some red and yellow dots to indicate the "cause"

@physicslover1950

2 жыл бұрын

Well your suggestions are valid I was also confused by colors.

@physicslover1950

2 жыл бұрын

I think even if Eugene had added chess floor background instead of blank background, the rotations would be easy to comprehend. The colors of the vectors were also very confusing... 😐

Why don’t the momentum vectors stay in the same direction as it rotates? If the object rotates 90*, so should the momentum vectors but it looks like the change direction

9:05 The explanations stops at stating that the intermediate axis is unstable. But why will the object, when rotating around the intermediate axis, always regain a semi-stable position before it starts tumbling again, becoming semi-stable again and so on?

I was literally just thinking about this

Great Video 😊

@EugeneKhutoryansky

2 жыл бұрын

Thanks. I am glad you liked my video.

Thanks!

@EugeneKhutoryansky

2 жыл бұрын

Thanks.

I remember veritasium’s video on this. Anyway, this is great and intuitive explanation!

@EugeneKhutoryansky

2 жыл бұрын

Thanks.

This was released just after Veritasium's bowling ball video, what a coincidence! 👍

It would be great if the axes had a distinguishable head and tail, so it's more immediate to identify the direction of rotation with the right hand rule. By the way one of your best videos imo.

@EugeneKhutoryansky

11 ай бұрын

Thanks!

Can you please give the solution this relativity paradox...an long train is move on an bridge with an gap(hole) in the track ahead... stationary observer sees train falling into the gap due to length contraction but in the train frame gap is very small so that train can easily pass by....??? What's wrong here???

@EugeneKhutoryansky

2 жыл бұрын

I explain this near the end of my video at kzread.info/dash/bejne/iqalzJpxqrTAeso.html

Amazing :)

@EugeneKhutoryansky

2 жыл бұрын

Thanks.

I really love you🥰

@EugeneKhutoryansky

2 жыл бұрын

Thanks.

The famous Veritasium iPhone flip experiment 😆 ❤❤❤

❤❤❤❤ and respect from INDIA🙇🙇🙇🙇🙇🙇🙇🙇🙇🙇🙇🙇🙇

I'm going to need to watch this video again, in a while. Because I don't think I've understood its importance.

A student asked Richard Fineman if there is an intuitive way to explain the intgermediate axis theorem. He thought about it for a while and said "No". So, if this is very difficult or impossible to truly grasp this concept, don't feel bad. Fineman couldn't do it either.

@EugeneKhutoryansky

2 жыл бұрын

I recently heard that story. That is what motivated me to do a video on this topic.

@qpwodkgh2010

2 жыл бұрын

@@EugeneKhutoryansky Well, thank you. It's a great video on the subject. I'm watching it several times, think, come back to it, think. You know the process. This is hard stuff to grasp. I expect that in the future when more people spend more time in space will see this much more often and it may be much more intuitive then.

suppose i paint all your axis with the same color , then what ?

Cool science🤓👍

My mentor as in this video the object is changing its spin and have started spinning in opposite directions . So keeping this prospective in mind, can we say that the fundamental tinny particles ( quantum particles) are all spinning about their intermediate axis and even a single photon form the cosmic microwave background cause their rotation to become unstable and that's why they flip their spin...? Is quantum spin due to intermediate axis theorem?

@EugeneKhutoryansky

2 жыл бұрын

That's an interesting idea, but we don't presently believe that fundamental particles have a different moment of inertia around each axis.

@physicslover1950

2 жыл бұрын

@@EugeneKhutoryansky we have assumed that an electron is spherical in radius.... However if we forget about electron and think of Proton and Neutron, we will find that they are made up of quarks and a proton ( neutron ) can have different moments of inertia about different axis... They may have an intermediate axis about which they spin and continuously change their spin direction..... Is this possible for an electrom to have other shape rather than the spherical one? I am also still confused that how this intermediate axis theorem does't violate law conservation of angular momentum?

@EugeneKhutoryansky

2 жыл бұрын

The angular momentum vector is constant, because there are no external torques, and angular momentum must be conserved. What is changing is the angular velocity vector. What is also changing is the moment of inertia relative to the fixed coordinates of our laboratory. This changing distribution of the moment of inertia combined with the changing angular velocity vector ends up producing a constant angular momentum vector. As for your question about electrons, right now, electrons are not even modeled as spheres, but as point particles with zero volume, and hence with no particular shape or structure. But, who knows what we might discover in the future.

@physicslover1950

2 жыл бұрын

@@EugeneKhutoryansky Thanks a lot ny mentor.... For the brilliant answer about angular momentum conservation. . Yes, you are right, who knows what we may discover in future.... My mentor Angular momentum is producing a lot of confusion in my mind because I have no way to visualize it in terns of angular velocity and moment of inertia ... I just recently came to know that angular momentum and angular velocity doesn't necessarily have to be in the same direction 2 days ago and I was super confused. Also what about the mathematical relationship then... L⃗ = Iω⃗ .... Isn't it indicating that angular momentum is moment of inertia times the magnitude of ω⃗ and in the same direction as that of ω⃗ . In order to change the direction moment of inertia must also be a vector ... isn't it? Can't this be explained without L = r × p.

@EugeneKhutoryansky

2 жыл бұрын

Details about this topic are available at the following link. phys.libretexts.org/Bookshelves/Classical_Mechanics/Variational_Principles_in_Classical_Mechanics_(Cline)/13%3A_Rigid-body_Rotation

Welcome keep going,stay blessed from pakistan.

@EugeneKhutoryansky

2 жыл бұрын

Thanks.

That is why a freely unhinged object always rotates about its center of mass?

Eugene, could you make a video about cauculus of variations? It would be nice. :)

@EugeneKhutoryansky

2 жыл бұрын

I have a video on partial derivatives at kzread.info/dash/bejne/eZ92ltiQYZm3eKw.html and I have a video on the Euler-Lagrange equation at kzread.info/dash/bejne/d5eZuKyDd6Ssdqw.html

Please give a vedio of face to face QNA,, Where many personal information of you will be included,, Love from Bangladesh🥰

@EugeneKhutoryansky

2 жыл бұрын

There are links on my KZread home page to my personal websites and to my Facebook page. These include one video of me. Thanks.

You can demonstrate this with your smartphone. It just won't spin properly no matter how carefully you try to flip it from the long side.

Now we need to add a 4th axis.

great

@EugeneKhutoryansky

2 жыл бұрын

Thanks.

very underated

@EugeneKhutoryansky

15 күн бұрын

Thanks.

Nifty

explain "time crystal"

Pls make next video on; CALCULUS OR ON SOME CHEMISTRY ORBITAL AND STUFFS.....💖💝💝

@EugeneKhutoryansky

2 жыл бұрын

I have many videos on Calculus and I have many videos on electron orbitals. My main video on Calculus is at kzread.info/dash/bejne/pJ6ArKuPn7Teqpc.html

@codedaily365

2 жыл бұрын

@@EugeneKhutoryansky yay...u the best... But make some of chemistry I suck at it 😭😭

Is it inaccurate to describe the growing instability of the intermediate axis as potential energy?

@EugeneKhutoryansky

2 жыл бұрын

The energy of the system is always constant, since we are not applying any external forces. And in this case, we only have kinetic energy.

[ 07:43 ] just like the *orbital wingnut*

Ahh so it's basically a runaway chain reaction of precession.

How can I learn animation like Dr. Eugene?

@EugeneKhutoryansky

2 жыл бұрын

I make my 3D animations with "Poser." Poser is expensive, but there are also free 3D animation programs like "Blender" and Daz Studio." I might make a video explaining how to make animations.

@aniksamiurrahman6365

2 жыл бұрын

@@EugeneKhutoryansky That's a good idea. How you developed your skill and what artistic and motivational problem you had to and still has to overcome, a overview of your thought process while making the animations, etc is what I'm eager to hear :)

This is an excellent explanation of why it’s so difficult to toss my phone and flip it end-to-end

0:35 - I advise anyone who doesn't want just to be a "calculator" to whom Answers are Given and has no Effort do to Understand how things work, meaning to those who wish to be More Creative and Free Mind, To pause at that mark and: - try TO FIGURE OUT WHAT WOULD BE THE ANSWER and only going Further if Completely Stuck about Ideas.

Oh yeah

@maxwellsequation4887

2 жыл бұрын

@@gopalrajak8594 Donut man was first

A pitty it didn't use normal vectors for angular momentum.

I love this channel. That said, I have a quibble with this one video. The animations were confusing. A solid connected object doesn't behave as shown. There is no inherent instability. The thought experiment (mathematical physics) around the intermediate axis is stable, but only in thought experiment, not reality. Instability arises because it unstable when any non-zero perturbations (necessary in reality physics -- engineering) are introduced. The Johnny Beck Off theorem is not even stated.

@EugeneKhutoryansky

2 жыл бұрын

I made that point in the video. I said, "In theory, the object could rotate just around the intermediate blue axis, if the rotations around the red axis and yellow axis are precisely zero. However, if the object has even the slightest rotation around the red axis or yellow axis, even if it just from the collision of a single air molecule, then the rotations around both the red axis and the yellow axis will end up growing."

@George4943

2 жыл бұрын

@@EugeneKhutoryansky Yes, indeed. My comment was mainly that the animations were confusing. The objects in the animations were confusing to me, unlike all the other vids. I understood the point. I only found the art confusing. Nevertheless, thank you for taking the time to reply.

Could be fun to explain this with Geometric Algebra? Sadly, this is out of my reach, how about you?

Sorry, i've failed to understand how does the moment of inertia affect your argument regarding the differnt axes. How is it that in a blue rotation, perturbations grow and in red or yellow rotations the are restrained?

Dzhanibekov Effect.

Visualize the Janibekov effect

So does that mean This will not happen in vaccum ?

@EugeneKhutoryansky

4 ай бұрын

This also applies when in a vacuum, because you will never have the rotation perfectly aligned with the axis. Even a tiny misalignment, no matter how slight, will end up growing with time.

I learned nothing and I had a lot of fun

1812

I'm sorry, its not your fault, but I just couldn't understand how this works.

Blue axis, yellow axis, red axis🥴

ഞങ്ങൾക്കൊരു കാരണം ഇല്ലാ .....ഞങ്ങൾ ഇങ്ങനെയാ . last and final

And people demonstrate this with iPhones? Back in my day it was Kleenex boxes.

неприятное видео, потому что запутался сразу. (но объективно оно хорошее)

:)

😁

For me, the animations were confusing.