As an experienced phone flipper, this is one of the first things I've mastered. I can literally choose which side it lands on, and even change the rotation speed on any of the chosen axis. Sometimes it feels like a superpower.
Veritasium isn't right about everything. As a matter of fact he's been known to push agendas. It's true. Idk why he does it but he does. Probably money related.
Yea i love that part to. One explanation for him not giving us an answer, could be due to something called the Socratic method. Where the philosopher Socrates would pose a question without giving an immediate answer, thereby inviting his students to think for themselves, and rather guide the students to enlightenment, instead of delivering the answer on a silver plate.
Not really, the strange rotation is due to the inertia tensor of the cell phone. A cell phone has 3 main axes of inertia, one of which is stable, one metastable and one unstable. The axis shown is unstable. This property can be found in many cuboid bodies, even with a homogeneous mass distribution.
@@rommeldaswusteneinhorn6013 nice theory, but in reality tho, the instability of one of the spin is not because of the uneven inertia across the axes, but because it is not perfectly spun owing to the uneven internal weight distribution and other environmental disturbances like air resistsnce. The axis thing makes it harder, but if it were a well balanced cuboid being spun without environmental disturbances by a precision machine, it would spin nicely along whatever axis you wanted it to. The idea of the uneven axis is true, but it only makes things harder, and here the factors which make the thing much more complicated are the internal weight distribution, air resistance, and human imprecision. It'd be easier to do with an object with less difference in length between the two sides, or more density to combat air resistance. For instance, doing this with an ingot of metal would probably be easier than with the phone. I found it easier with a sort of heavy paperback book too
It’s about symmetry of the center of mass. The COM is not vertically aligned with the charging port (probably from the weight of the cameras but that could be wrong) so when you try to flip the phone end over end, you are applying different forces on each side of the center of mass making it rotate.
This video idea was stolen from one of his friends who has a chronic illness now and can't make videos. What a stab in the back. Remember physics girl and the Rodney Mullen Impossible flip vid?
This video idea was stolen from one of his friends who has a chronic illness now and can't make videos. What a stab in the back. Remember physics girl and the Rodney Mullen Impossible flip vid?
Intermediate axis theorem, basically every imperfection of your throw will be amplified, so not impossible, just very hard because you need a near perfect throw
This video idea was stolen from one of his friends who has a chronic illness now and can't make videos. What a stab in the back. Remember physics girl and the Rodney Mullen Impossible flip vid?
@@jeffmcdonald101 Physics demonstrations aren't "stolen" especially when they have such common household objects. Physics Girl's approach was also completely different, being able to interview a skateboarder on the application of the intermediate axis theorem to unique tricks in the sport. Derek made his own video on the intermediate axis theorem called "The Bizarre Behavior of Rotating Bodies" almost a year after hers and with its own approach based on tennis rackets and the Earth's rotation. You're just reaching for controversy and maliciousness where it doesn't exist and it's sad.
I would also add in the combinatiom of air resistance to the larger surface area and the inability to perfectly align the force applied to the phone straight down the middle.
Nope. It would also happen if the phone had a completely uniform weight distribution across it's shape. (But it wouldn't happen if you were able to perfectly flip it in a vacuum, so that there are absolutely no forces in the unintended direction of rotation from the start on)
He has long video about this effect including very detailed explanation. This is Janibekov’s Effect - named after USSR cosmonaut who first observed and described in detail this effect at the Salut-7 space station in 1986.
This video idea was stolen from one of his friends who has a chronic illness now and can't make videos. What a stab in the back. Remember physics girl and the Rodney Mullen Impossible flip vid?
This video idea was stolen from one of his friends who has a chronic illness now and can't make videos. What a stab in the back. Remember physics girl and the Rodney Mullen Impossible flip vid?
This video idea was stolen from one of his friends who has a chronic illness now and can't make videos. What a stab in the back. Remember physics girl and the Rodney Mullen Impossible flip vid?
Or the entire design of the damn thing. On the other hand, I think they did it for the benefit of not getting sued by apple. Which, if they wanted, they probably could since the phone is still identifiable.
This video idea was stolen from one of his friends who has a chronic illness now and can't make videos. What a stab in the back. Remember physics girl and the Rodney Mullen Impossible flip vid?
For real, you just offset the way you apply the force to the phone and it flips just fine. I don't know why Veritasium has so much difficulty with this lol, it kinda discredits him a bit calling this "impossible".
Yeah, there's still irregularities, but they're much less noticeable because of the different axis, aka physics. If there's less momentum, then the weight differences will take over and make it spin weirdly like that. Kinda like the blowing your own sail myth, it works, if you blow reaaaally hard, which will kinda defeat the purpose of transportation, but it still proves that it is possible. Saying that this is impossible is just simply clickbait, and it worked, because we're here talking about it.
You can't do it. Not for at least a couple solid 360° rotations. One flip really fast doesn't count. Look up the intermediate axis (Tennis Racket) theorem, it's a well established effect. I would implore you to share a video of you disproving this theorem if you are indeed managing multiple rotations along your rectangular phone's intermediate (long/wide) axis.
@thequantaleaper According to the Wikipedia article for Tennis Racket theorm: "In almost all cases, during that rotation the face will also have completed a half rotation, so that the other face is now up." Note those first few words: "ALMOST all cases", meaning it is totally possible, just difficult. You just have to ensure that the force applied is arbitrarily close enough to the axis line to prevent significant rotation.
Wrong...the lack of desire for knowlege and learning has ceated CZcams shorts. Anyone who's interested in the answer could easily find it out in a few minutes.
My answer- The torque due to air resistance is high cause the ends are further away from the axis passing through the middle about which the phone rotates about because torque is proportional to distance from the axis. And because we can't exactly throw the phone symmetrically (one edge is closer to us than the other), the torque on the left and right side is also unequal, so it spins in the other directions too. In the first case, the area is so small that it can be called aerodynamic and the phone cuts through the air as it spins and air resistance has negligible affect. In the second case when phone is thrown while spinning along the longer side axis, the torque is low cause the maximum distance from the mid axis is small. And so in the third case where is goes out of control, I explain why it does so. Thanks for reading :D
It's not. It's because it's moment of inertia is higher around the x-axis than the y-axis. This is because the mass is closer to the y-axis when spun around the y-axis and further away from the x-axis when spun around the x-axis. Moment of inertia is proportional to the square of the distance from the axis the object spins around. If the phone was a square, the moment of inertia would be the same in both orientations and it would work.
@@isakhammer5428 what you say is true but it does not explain why the phone wobbles and spins in other ways too. Having a higher moment of inertial does not explain why it spins other ways also. Or maybe I missed something 🤔 I say if there was a way to perfect throw the phone symmetrically then it would not wobble
For those wondering about why he poses a question without giving an answer. One explanation for him not giving us an answer, could be due to something called the Socratic method. Where the philosopher Socrates would pose a question without giving an immediate answer, thereby inviting his students to think for themselves, and rather guide the students to enlightenment, instead of delivering the answer on a silver plate.
@@keepchatting-aneno. it's Socratic method plus advertisement. by making you ask he's inviting you to search. aka the longer video. it's both probably.
It's just physics! 1: No phone is perfectly calibrated to weigh exactly the same everywhere. 2: Air resistance. A force applied to any object, gives that object direction. In this particular case we need to take in count the shape of the object. The air resistance is increased while spinning the phone in this particular manner, So the phone is forced into a position where it is the least resistant to air, (and does the same with every spin), and at the same time, "trying" to maintain speed and direction.
It's neither of those things. A perfectly uniform phone-shaped brick thrown in a vacuum would still do it. The reason it happens is because the mass distribution of a phone is different along all three of its main axes, and as a result, each axis has a different moment of inertia. Spinning the phone around the top-to-bottom axis is the lowest moment of inertia, spinning it around the axis that goes through the screen is the highest, and flipping end-over-end has an intermediate amount of moment of inertia. And a rotation around that axis, for any object that has three different principal moments of inertia, is simply unstable. Theoretically if the phone was flipped with its rotation vector perfectly aligned with that axis, it could do a clean flip, but in practice that is impossible, and any deviation will eventually cause the rotation vector to wander off.
fact you can spin your phone, the thing its the centerpoint need be on one edge, grab the phone for the top of botttom edge with both hand and give it a good spin. obvviusly be sure you have a soft surface undeneat the phone, but you can
Not me learning 6 years ago how to flip my phone to make it do a 360 and a backflip at the same time and landing perfectly in my hand, performing it now on demand, being so good at it that I did it in the dark at 1:21am and actually felt proud because of it.
I think its Because it's center of mass isn't in the middle. The phone isn't symmetrical in weight along its axis thus making it divert or rotate along its askew center.
@@MasterHamzway Axis 1 is perpendicular to the screen. Axis 2 is left/right along the screen Axis 3 is up/down along the screen It is spinning it around Axis 2 that has this problem
@@MasterHamzway I can label the axes in any order I prefer. Axis 1 is the shortest axis, axis 2 is the 2nd shortest axis, the intermediate Axis. Axis 3 is the longest axis. On my phone, axis 3 goes from the charge port to the user-facing camera.
This phenomenon is due to something that was discovered by the Russians onboard ISS when they saw how a thumb screw alternates its spin axis every set degree of rotation.
Gravity is like acceleration. It creates a force in the mass. The curve in the spacetime creates the acceleration where the two forces are equal and opposite.
Yeah, path of least resistance, even without air, or electricity. You see irregularities if you spin it from the side ("thin spin", not the flipping over like a pancake), it spins much more easily, but you can see that it takes a slightly larger rotation when the battery is on the bottom going up, it's not dramatic, but it's there. Kinda oval, a bit like a piston, or a planet in retrograde. The flat spin makes the travel distance and surface too great to overcome with a simple toss, it gets hit with double the handicaps. It "wants" to spin around its left to right axis, because that seems to be the most "natural", or balanced axis to spin on, but it can't because it is being spun around its head to toe axis, sorry for the lack of jargon. But it can flip properly with more force, for a while, until it shifts again eventually.
WRONg! This is ONLY when assuming you are holding your phone. If you add a stationary axis, say a Table for instance, the phone CAN be flipped in this “impossible” way. Try it by setting your phone on the edge of your table, slightly off hanging. Push directly down in the middle of the phone at the very end that is hanging off of the edge. In skateboarding trick terminology, this type of flip would be referred to as an “Impossible”. Rodney Mullen is the inventor, along with the Kickflip. With skating, the ground acts as the table would with the phone. There is also a clip of Rodney Mullen himself trying to flip a phone in this “impossible” way, to no avail. But it is DEFINITELY possible given a set of circumstances. TLdR: holding your phone makes it too unsteady to flip it. Use an additional stationary surface(a table, etc.)
Vsauce wouldnt leave us hanging like this.
The original video + explanation is literally 9 y old.
And he didn't, he does have a video on it
He's done it before 😂
I would have ended up thinking about my existential crisis and is my phone is spinning or is it me? 😂
@@nico210 that explains the old ass iPhone
This video was sponsored by someone who wanted to force to buy a new phone by smashing your current one.
Do it over a mattress?
or by repair service
Not trying with my phone
You're onto him 🧐😂
That's why he using 10yr old phone
* Raises the question *
* Refuses to elaborate and leaves *
I think it's the CZcams shorts 60 seconds restriction
Nah , it's because he already have a video on this topic
@@Grandiose11the video,is 24 seconds💀
@@paulcharles2532 This short is linked to the explanation video
As an experienced phone flipper, this is one of the first things I've mastered. I can literally choose which side it lands on, and even change the rotation speed on any of the chosen axis. Sometimes it feels like a superpower.
Vid, or it didn't happen.
Finally a rival
Our battle will be legendarrry
This happens because “someone” has made a-lot of money on videos, and has nothing to do. (Or inertia/ballast, nothing flat/rectangle spins a 360
this is so real, i too am a certified phone flipper
Veritasium isn't right about everything. As a matter of fact he's been known to push agendas. It's true. Idk why he does it but he does. Probably money related.
I tried it and i have to buy another phone
this has to be sponsored by a phone company
😂
😂😂😂
To be fair, he did say it wouldn’t work. Just not what IT was.
Because you forgot to shake the phone to distribute the weight before flipping.
I love the part where he explains why it happens
Yeah he is just like Vsauce
Yeah, its the only good part of this vid
Actually he wont explain , because he's actually doesn't know why does this happen and expects us to explain for him .
Intermediate axis theorem. Look it up.
Yea i love that part to. One explanation for him not giving us an answer, could be due to something called the Socratic method. Where the philosopher Socrates would pose a question without giving an immediate answer, thereby inviting his students to think for themselves, and rather guide the students to enlightenment, instead of delivering the answer on a silver plate.
It happens because the internal parts of the phone aren't evenly spaced out or weighted
Not really, the strange rotation is due to the inertia tensor of the cell phone. A cell phone has 3 main axes of inertia, one of which is stable, one metastable and one unstable. The axis shown is unstable. This property can be found in many cuboid bodies, even with a homogeneous mass distribution.
@@rommeldaswusteneinhorn6013 nice theory, but in reality tho, the instability of one of the spin is not because of the uneven inertia across the axes, but because it is not perfectly spun owing to the uneven internal weight distribution and other environmental disturbances like air resistsnce. The axis thing makes it harder, but if it were a well balanced cuboid being spun without environmental disturbances by a precision machine, it would spin nicely along whatever axis you wanted it to. The idea of the uneven axis is true, but it only makes things harder, and here the factors which make the thing much more complicated are the internal weight distribution, air resistance, and human imprecision. It'd be easier to do with an object with less difference in length between the two sides, or more density to combat air resistance. For instance, doing this with an ingot of metal would probably be easier than with the phone. I found it easier with a sort of heavy paperback book too
Got it first try ?? Whats wrong with my phone
he doesn't know why it happens, he's genuinely asking us
LMAO
He linked the answer in the caption
That’s really how he made it seem with the cut 💀
Congratulations,you didn't understand the joke @@Ravgo
Lmaooo😂😂😂😂@@Liefx
Veritasium In The Transition Phase Of Becoming Vsauce😅
Little did you know, he's actually Vsaucium!
Vsuckium
Verisaucium?
There is literally only those mid sentence breaks and the notorious piano sound missing
Nine years ago they collaborated on videos called What is Random? What is NOT Random?
It’s about symmetry of the center of mass. The COM is not vertically aligned with the charging port (probably from the weight of the cameras but that could be wrong) so when you try to flip the phone end over end, you are applying different forces on each side of the center of mass making it rotate.
Back in my day these videos came with explanations
It's called Dzhanibekov Effect, he has already made a long video about it some years ago
Edit: It's titled Bizarre Behavior of Rotating Bodies
Are you blind? There's a link
Back in your day shorts didn't exist and people had the attention span to watch a video long enough to explain it all
@@pleb130back in my day, we didn't have the time to watch a whole video that's probably 20 minutes for an explanation. Or not
Instructions not clear: phone became a helicopter.
Helicopter helicopter! 🚁
Put it on airplane mode then
@@TheCoBBus Ah damnit I came here just to say that 😅
Try turning it off and back on again
This video idea was stolen from one of his friends who has a chronic illness now and can't make videos. What a stab in the back. Remember physics girl and the Rodney Mullen Impossible flip vid?
bros tryna break our phones💀
The phone flips like one of the greatest gymnast
This is because of tennis raket theorem the phone turns in different direction because that axis has unstable moment of inertia.😊👍
Well and the battery and other parts make the phone unbalanced internally
So,,, what makes it unstable?
Because why
@@jackknifegibsontry it with something neuitral you will see the same effect
That's a lot of words to explain nothing
Just imagine how many people will break their phone after that video😂
Welcome to the new generation of plug-in ad for iPhones.
This video is sponsored by Apple
Better buy apple stock 😆
Mattress enters the chat
Me who already have broken phone😢😂
Bro made thousands of people spin their phone
Bro gives me heart attack after each i phone flips
This video was sponsored by all smartphone companies in existence
This video idea was stolen from one of his friends who has a chronic illness now and can't make videos. What a stab in the back. Remember physics girl and the Rodney Mullen Impossible flip vid?
@@jeffmcdonald101who?
@@jeffmcdonald101 Ive seen many videos on the topic, so hard to say such a common/basic video was "stolen".
@@jeffmcdonald101 press x to doubt
Dude is responsible for hundreds of broken phones now 😂
skip kssue
Thanks for the broken phone screen mate! 😂
As a skater, the phone just wants to do a hard flip
Which is why the Impossible flip is so hard on a skateboard. All hail Rodney Mullen.
Bro left us without answering
There's a full video about it
Exercise left to user
Welcome to clips. First time?
Intermediate axis theorem, basically every imperfection of your throw will be amplified, so not impossible, just very hard because you need a near perfect throw
@@-_-feddeNot near-perfect: fully perfect, and in a complete vacuum because interactions with air molecules are also amplified.
Bold of you to assume I have a spare phone to spin.
Last time I tried I had to buy a new one .
When you haven’t done your homework and it’s your turn to present your work
This feels like a conversation that should only be had when one or more people are high af.
I’m sure plenty of stoners watched this
@@michaelnixon5524 Me included XD
🤳: Now I’ll flip you.
📱: 🤸♂️🤸♂️🤸♂️🤸♂️
ᴺᵒᵒᵒ️️🤸
This video idea was stolen from one of his friends who has a chronic illness now and can't make videos. What a stab in the back. Remember physics girl and the Rodney Mullen Impossible flip vid?
@@jeffmcdonald101 might want to put the crack pipe down there Jeff
@@jeffmcdonald101 Physics demonstrations aren't "stolen" especially when they have such common household objects. Physics Girl's approach was also completely different, being able to interview a skateboarder on the application of the intermediate axis theorem to unique tricks in the sport. Derek made his own video on the intermediate axis theorem called "The Bizarre Behavior of Rotating Bodies" almost a year after hers and with its own approach based on tennis rackets and the Earth's rotation. You're just reaching for controversy and maliciousness where it doesn't exist and it's sad.
Vsauce would even explain why you left us hanging
OLD VIDEO BUT YOU REMAKE IT IN SHORTS GOOOD
I think it is because of the weight distribution in the phone
I would also add in the combinatiom of air resistance to the larger surface area and the inability to perfectly align the force applied to the phone straight down the middle.
It’s not just that, because it’s true even for objects of perfectly homogeneous density.
I think it is because of black magic
Nope. It would also happen if the phone had a completely uniform weight distribution across it's shape. (But it wouldn't happen if you were able to perfectly flip it in a vacuum, so that there are absolutely no forces in the unintended direction of rotation from the start on)
@@NoName1918blackberry*
Plot twist: he doesn't know the answer and asks genuinely
The answer is in the video he links at the bottom of this one. "5 fun physics phenomena"
He has long video about this effect including very detailed explanation. This is Janibekov’s Effect - named after USSR cosmonaut who first observed and described in detail this effect at the Salut-7 space station in 1986.
@@JamOwnzU i don't see it though, the link is full of hashtags instead.
@@vit3060
Somebody has a brain and a memory.
This video idea was stolen from one of his friends who has a chronic illness now and can't make videos. What a stab in the back. Remember physics girl and the Rodney Mullen Impossible flip vid?
Bro gave us assignment to be submitted by Monday 💀
This guy has a contract with phone insurance companies
Alternate title: "How to trick idiots into having to buy a new phone"
This is why Rodney Mullen named the trick "The Impossible"
whilst also proving the fact that this is not impossible, its just difficult.
This video idea was stolen from one of his friends who has a chronic illness now and can't make videos. What a stab in the back. Remember physics girl and the Rodney Mullen Impossible flip vid?
Thanks you
@@jeffmcdonald101 please explain how it is a stab in the back? I remember that video but don't see how you're making that connection.
@@jeffmcdonald101 dude yes!!
Bro literally used an iPhone to spin 💀
instructions unclear, phone flew out the window and now watching CZcams on my toaster
This short is definitely responsible for several dropped and destroyed phones.
I remember a video that mentioned Russian astronauts and a bolt that would do the same.
here it's way simpler though; just the fact that battery is commonly is on one side, affecting the weight distribution
@@i-am-art no it occurs even in objects that have uniform density
It is due to intermediate state of the inertia, see the mentioned video it has the explanation
the guy name was Dzhanibekov
This video idea was stolen from one of his friends who has a chronic illness now and can't make videos. What a stab in the back. Remember physics girl and the Rodney Mullen Impossible flip vid?
Turning smart phones into flip phones
I love the part where u told us why this happens
Isn't this the "Dzhanibekov effect" or tennis rocket theorem? In fact Veritasium himself posted a video about this effect a couple of years ago.😃
Yep! Also known as the intermediate axis theorem. The intermediate axis is inherently unstable.
tennis rocket theorem be like
can you pls send the link to that video?
It is
It’s calledJ2 (the middle inertia of angular motion) instability. ❤
“How did your phone shatter like that?”
Me: ...
I found this out on my own, it made me love to just flip my phone like this and watch it spin.
The phone has the tendency to want extra trick points when u flip like that
Who else tried
👇🏻
👇🏻
As soon as he said "have you ever tried to flip your phone" i knew he was talking about the intermediate axis theorem and i got really excited 🤣
Great now im in the bathroom resisting the urge to start flipping my phone over the tile.
Dude, why? Phones today don't break so easily. (Except for apple)
Bro really thought we wouldn’t recognize the Apple logo
Or the entire design of the damn thing. On the other hand, I think they did it for the benefit of not getting sued by apple. Which, if they wanted, they probably could since the phone is still identifiable.
This video idea was stolen from one of his friends who has a chronic illness now and can't make videos. What a stab in the back. Remember physics girl and the Rodney Mullen Impossible flip vid?
@jeffmcdonald101 no it wasn't. Veritasium made a video explaining this phenomenon years before Diana got sick
Pov: you spinned your phone to test it
NO DEREK NOT THE CLIFFHANGER 😂
myth busted, it's hard but not impossible.
For real, you just offset the way you apply the force to the phone and it flips just fine.
I don't know why Veritasium has so much difficulty with this lol, it kinda discredits him a bit calling this "impossible".
Indeed. You can learn to do it consistently in an hour
Yeah, there's still irregularities, but they're much less noticeable because of the different axis, aka physics.
If there's less momentum, then the weight differences will take over and make it spin weirdly like that.
Kinda like the blowing your own sail myth, it works, if you blow reaaaally hard, which will kinda defeat the purpose of transportation, but it still proves that it is possible.
Saying that this is impossible is just simply clickbait, and it worked, because we're here talking about it.
You can't do it. Not for at least a couple solid 360° rotations. One flip really fast doesn't count. Look up the intermediate axis (Tennis Racket) theorem, it's a well established effect.
I would implore you to share a video of you disproving this theorem if you are indeed managing multiple rotations along your rectangular phone's intermediate (long/wide) axis.
@thequantaleaper According to the Wikipedia article for Tennis Racket theorm:
"In almost all cases, during that rotation the face will also have completed a half rotation, so that the other face is now up."
Note those first few words: "ALMOST all cases", meaning it is totally possible, just difficult.
You just have to ensure that the force applied is arbitrarily close enough to the axis line to prevent significant rotation.
The cliffhanger hit me hard!
He has the full video on his channel.
“Have your ever tried to spin your phone?”
Hell nah bro 💀
I was never worried about why it wouldn’t spin “cleanly”.
Here "Intermediate acis therom" is clearly visible
It applied on that objects that has 3 different moment of inertia on 3 different axis.........😅😅😅
CZcams shorts have destroyed knowledge and learning
please tell me more about this hot take
Hank Green:
Wrong...the lack of desire for knowlege and learning has ceated CZcams shorts. Anyone who's interested in the answer could easily find it out in a few minutes.
yo are you good veritasium is regarded as one of the most educational channels
I agree but not Veritasium shorts I'd say there worse more brain melting content out there
"I don't need sleep i need an answer" ahh moment
"I've detected an accident. Dialing emergency services"
Instructions unclear: my phone flipped me and I am dead now
My answer-
The torque due to air resistance is high cause the ends are further away from the axis passing through the middle about which the phone rotates about because torque is proportional to distance from the axis. And because we can't exactly throw the phone symmetrically (one edge is closer to us than the other), the torque on the left and right side is also unequal, so it spins in the other directions too. In the first case, the area is so small that it can be called aerodynamic and the phone cuts through the air as it spins and air resistance has negligible affect. In the second case when phone is thrown while spinning along the longer side axis, the torque is low cause the maximum distance from the mid axis is small. And so in the third case where is goes out of control, I explain why it does so.
Thanks for reading :D
its not because of aerodynamics. this will happen in a vacuum too. it has something to do with the phone's moment of inertia
It's not. It's because it's moment of inertia is higher around the x-axis than the y-axis. This is because the mass is closer to the y-axis when spun around the y-axis and further away from the x-axis when spun around the x-axis. Moment of inertia is proportional to the square of the distance from the axis the object spins around. If the phone was a square, the moment of inertia would be the same in both orientations and it would work.
@@isakhammer5428 what you say is true but it does not explain why the phone wobbles and spins in other ways too. Having a higher moment of inertial does not explain why it spins other ways also. Or maybe I missed something 🤔
I say if there was a way to perfect throw the phone symmetrically then it would not wobble
I always thought that was a neat parlor trick that I invented myself
Reminds me of Rodney Mullen explaining the impossible flip.
Now I understand why so many have broken screens. They spin it and drop it all the time!
For those wondering about why he poses a question without giving an answer.
One explanation for him not giving us an answer, could be due to something called the Socratic method. Where the philosopher Socrates would pose a question without giving an immediate answer, thereby inviting his students to think for themselves, and rather guide the students to enlightenment, instead of delivering the answer on a silver plate.
or it came out of a longer vid
@@keepchatting-aneno. it's Socratic method plus advertisement. by making you ask he's inviting you to search. aka the longer video. it's both probably.
"So why does this happen?"
*refuses to tell us*
These are the videos that make me completely unwilling to look for “part 2”.
It's just physics!
1: No phone is perfectly calibrated to weigh exactly the same everywhere.
2: Air resistance. A force applied to any object, gives that object direction. In this particular case we need to take in count the shape of the object. The air resistance is increased while spinning the phone in this particular manner, So the phone is forced into a position where it is the least resistant to air, (and does the same with every spin), and at the same time, "trying" to maintain speed and direction.
It's neither of those things. A perfectly uniform phone-shaped brick thrown in a vacuum would still do it.
The reason it happens is because the mass distribution of a phone is different along all three of its main axes, and as a result, each axis has a different moment of inertia. Spinning the phone around the top-to-bottom axis is the lowest moment of inertia, spinning it around the axis that goes through the screen is the highest, and flipping end-over-end has an intermediate amount of moment of inertia.
And a rotation around that axis, for any object that has three different principal moments of inertia, is simply unstable. Theoretically if the phone was flipped with its rotation vector perfectly aligned with that axis, it could do a clean flip, but in practice that is impossible, and any deviation will eventually cause the rotation vector to wander off.
@@zuthalsoraniz6764 It's called the tennis racket theorem, intermediate axis theorem or Dzhanibekov effect.
fact you can spin your phone, the thing its the centerpoint need be on one edge, grab the phone for the top of botttom edge with both hand and give it a good spin. obvviusly be sure you have a soft surface undeneat the phone, but you can
Not me learning 6 years ago how to flip my phone to make it do a 360 and a backflip at the same time and landing perfectly in my hand, performing it now on demand, being so good at it that I did it in the dark at 1:21am and actually felt proud because of it.
“Relax, it’s iPhone”
evil vsauce: asks a question and never answers it himself
I think its Because it's center of mass isn't in the middle. The phone isn't symmetrical in weight along its axis thus making it divert or rotate along its askew center.
Remember, don’t try to flip your phone on top of a building
One of my favorite mystery demos to do with my physics class!!
Did it in my pool, and asked why it did not float.
Wait, on the 2nd spin Derek said "the short axis", but isn't that axis the longer one?
the short is the longer? did you really say that?
@@garymartin9777 Bruh, do you not know what an axis is? By it's definition that axis is the longer one
@@MasterHamzway Axis 1 is perpendicular to the screen.
Axis 2 is left/right along the screen
Axis 3 is up/down along the screen
It is spinning it around Axis 2 that has this problem
@@carultch Axis 2 is the one extending from the camera notch to the charging port, so the top to bottom one, hence the longer axis
@@MasterHamzway I can label the axes in any order I prefer. Axis 1 is the shortest axis, axis 2 is the 2nd shortest axis, the intermediate Axis. Axis 3 is the longest axis.
On my phone, axis 3 goes from the charge port to the user-facing camera.
This phenomenon is due to something that was discovered by the Russians onboard ISS when they saw how a thumb screw alternates its spin axis every set degree of rotation.
I flip my phone like that every time I pick it up. It's a dangerous lifestyle for sure.
People will say and refer to weird maths theorems...and its just cause the battery is on a side, and not on the center
Instructions unclear: I broke my phone and it's charging me for SA!
Ask Einstein man, he defeated me by proving gravity is not a force.
Gravity is like acceleration. It creates a force in the mass.
The curve in the spacetime creates the acceleration where the two forces are equal and opposite.
@@ReinoGoo was it Veritasium that made a video about it,
or was it some other creator?
POV: You just flipped your phone
Easy, my phone is a gymnast😂
Where’s the rest of the video? 😢
The link at the bottom of this one
flip the phone, it's on the other side
Dzhanibekov effect!
This is because the upper part of phone has less weight than lower so it creates torque when we try to rotate from middle axis and it rotates
Yeah, path of least resistance, even without air, or electricity.
You see irregularities if you spin it from the side ("thin spin", not the flipping over like a pancake), it spins much more easily, but you can see that it takes a slightly larger rotation when the battery is on the bottom going up, it's not dramatic, but it's there.
Kinda oval, a bit like a piston, or a planet in retrograde.
The flat spin makes the travel distance and surface too great to overcome with a simple toss, it gets hit with double the handicaps.
It "wants" to spin around its left to right axis, because that seems to be the most "natural", or balanced axis to spin on, but it can't because it is being spun around its head to toe axis, sorry for the lack of jargon.
But it can flip properly with more force, for a while, until it shifts again eventually.
You won't trick me into dropping my phone.
it's funny how the logo on the phone was blurred as if we all could never figure out what it was.
WRONg!
This is ONLY when assuming you are holding your phone. If you add a stationary axis, say a Table for instance, the phone CAN be flipped in this “impossible” way.
Try it by setting your phone on the edge of your table, slightly off hanging. Push directly down in the middle of the phone at the very end that is hanging off of the edge.
In skateboarding trick terminology, this type of flip would be referred to as an “Impossible”. Rodney Mullen is the inventor, along with the Kickflip. With skating, the ground acts as the table would with the phone.
There is also a clip of Rodney Mullen himself trying to flip a phone in this “impossible” way, to no avail. But it is DEFINITELY possible given a set of circumstances.
TLdR: holding your phone makes it too unsteady to flip it. Use an additional stationary surface(a table, etc.)
I did it after about 20 minutes of attempts or so. Of course it was by myself with no video evidence, but yeah! Try for yourself 😊
It will still deviate from the initial axis of rotation. The phenomenon is explained by the intermediate axis theorem
In his defence, his explanation of this effect is so complicated he could never fit it into a short
Instructions unclear.
Now there is only cracked glass in my home...
RIP to everyone’s phone who literally just tried this
It’s the same phenomenon when trying to flip a tennis racket, Table tennis racket or a badminton racket.
You want me to break my phone.
I see apple has been paying you 😂
Vsauce gave US explanations
Veritasium responsible for many cracked screens
Phone companies love him because of one simple trick!