Synchronisation
HTML-код
- Опубликовано: 29 сен 2024
- Synchronisation of 5 coupled metronomes done in Lancaster University, Physics Dep ( / lancasterphysics , Nonlinear dynamics and medical physics group.
Emails related to this video can be sent to:
a.bahraminasabNOSPAM at gmail dot com.
Some explanation by 'shoonya' which I think is pretty good:
Here you go: metronomes (or "pendula") when on table, oscillate with random phases, since that is how they started and they are "uncoupled" (no energy/information flows from one to other so they do not "know" each other.) When they are all together on the cans, notice that the cans themselves oscillate little, providing coupling/information crossover. which forces "synchronization" in periodic systems (discovered by Huygens in 17th century).
A useful book: "Synchronization: A Universal Concept in Nonlinear Sciences " by Arkady Pikovsky, Michael Rosenblum and Jurgen Kurths.
A scientific article: scitation.aip.o...
My personal homepage:
sites.google.c...
Reference to the original video: • Spontaneous Synchroniz...
Peer pressure in action. If you don't have a solid foundation, you'll end up just like the people you hang out with.
"You are the average of the five people you hang out the most with." In this case, you are the average of the four metronomes you tick the most with.
@@TheChamp1971 You can't hang out with five, if you are the fifth person, unless hanging out has a new meaning.
they are all separate on a table so of course they will not be in synch.
but when they are on the cans they provide energy which makes the cans move only slightly left and right at a constand speed. so eventually they all become synchronized. the rest is explained by shoomya or whatever in the description box
Imagine walking into a room with a guy standing there with this in front of him
winlip2 lol
Then someone yells, run for your lives!
I don't want to sound like that guy but although the metronomes themselves are synchronized, they are not synchronized to the steady BPM itself. I have measured from 85 BPM to 88. Basically the mechanical adjustment is varying the BPM of the "unison".
That's because this isn't a demonstration of one oscillator locking to a reference, it's a demonstration of multiple oscillators essentially injection locking to each other. Having the metronomes stay at a constant frequency is irrelevant to the demonstration.
Zmechanic Sure. But you certainly know what function is expected of metronomes right? (Beating according to the pre-defined BPM)
That is awesome!! (Adam Savage from Mythbusters voice:) "It's SCIENCE!!"
stumbled from a village not too far from lancaster, awesome :D
that's so awesome and creepy at the same time.
I think it's scary that they all tick together. It's like they're mindless regimented slaves beholden to the will of a queen bee.
does it work if you use more metromones?
y? why do they syncronize when u put em in a different base
thats really cool
Woooooowwww! Wonderful experiment!
wrong. there is someone moving the camera even as he lifts the board off the table.
if you would watch till the end num nuts, you would see that they stay in synch
can anyone explain how that's happening, please?
thanks ^^
Nice one!
that's interesting as a musician, metrenomes are my friends, its good to see them getting along
ahhhhh the fresh smell of physics
i love how the camera starts wobbling in sync too
this is truly amazing. proves why hanging out with positive people lifts your mood :)
we are the metronomes , you will be assimilated , resistance is futile .
To say it with Benjamin Franklin: 'Join or Die.'
Only if you stand on a board based on two cans. If you don´t like to be synchronised just leave the board.
@@Alternatives_Universum this was a joke . . . 6 years ago lol
Entrainment! This simple video demonstrates how communication of information works, and that wave dynamics is the fundamental physics of the universe described by so many hidden teachings (Cymatics). Whether Electronically, Sonically, Gravitationally or even mentally, all informational process are a product of entrainment cascading and unification of two bodies into a unified system of data flow. In humans, this works via open mindedness.. do we choose to allow the information in to IN FORM our minds.
I like the way you wrote "IN FORM" made an abstract point, /bravo
Not to be gross but kinda like a group of women menstrual cycles sync up....Physics.
Well it can happen too. It depends to the special relation between their frequencies. In the current expriment the ratio of frequencies is 1 but instead if it was 2 (=frequency1/frequency2), then we might have a metronomes which passes 2 priods while the other passes one and this pattern is repeated again. This type of synchrony called 2 to 1 and that we showed here is 1 to 1.
illuminati
+Alec C. DiamondKraut - funny kid
Freemasons
I thought N-sync broke up, nice to see they are in time with each other now! damn Justin looks different!
Yeah but itd be impossible to do that with six
ROFL!!
Like if Mythbusters brought you here
I recently built an android app to synchronize metronomes using UDP (I also tried with GPS time stamps and NTP server time stamps). This is probably a much more accurate way but requires at least a router. Additionally it is actually dependent on the android machine's processing speed AND what is happening in the background. E.G. If you are playing a video from youtube then it would hog up its wifi and create more lags in the app. Preferably you switch off every other data transmission and just let the app run =D
What would have happened if you left them flat on the table and not place them on the cans?
dude you have to check out the EPIC American Idol contestant Casey Abrams DUBSTEP REMIX, stuff is crazy!
American Idol Casey Abrams EPIC DUBSTEP Remix and Synch HD* by Ember Waves
the song is synched with the contestants audition tape, trippy stuff....
Not that big of a
Mysterie, the wood allows them to share and dampen all forces until they equal out. Now place one next to another one on a spinning plate, start them the same time and observe them desynchronising. You just proven time dilation to be nonsense.
Very cool. It may be easier to see the oscillations of the cans, however, if the camera was fixed on a tripod. But nice one anyhow.
if we put them back on the table they will eventually go out of synchrony.
I feel like I've been hypnotized
wow i think u need to find another hobby
Bueno, a mi me gustó, creo que cualquier persona que entienda algo de física puede resultarle un experimento interesante. Pero alguien me podría explicar por qué sucede?
Well, I liked it, I think anyone who understand about Physics would find this an interesting experiment. Now, can someone explain me why it that happens?
ho , lo q veo es que los balances de cada uno cambian( siendo todas del mismo peso)... al ser mas rapida la
compensacion de movimiento de la base con las latas, mandando el peso al lado contrario del movimiento generado, y quedando syncronizados muy interesante movimiento angular
I believe the answer lies in the resonance of the system.
Just imagine you were on a ship and everyone tried to make it turn over by running from one side to the other (however initially all run at random times). Eventually, as the ship starts turning, everyone would end up running in phase with each other and the ship. Same principle.
I believe the answer lies in the resonance of the system.
Just imagine you were on a ship and everyone tried to make it turn over by running from one side to the other (however initially all run at random times). Eventually, as the ship starts turning, everyone would end up running in phase with each other and the ship. Same principle.
This is harldy any amazing stuff. The momentum of the weights make the board move back and forth, since it's on those 'wheels', which in turn influenced the metronomes to move in synchronization.
I think this falls under the category 'nifty science'.
does it work if you put the metronomes on the table ? i doubt ! it works because of the movment of the support
I saw this demonstration on one of the TED videos... cool stuff eh!? :) there is no mystery about synchronicity, it is just a natural occurrence of life. Be assured that there is a reason, and be satisfied with that. :)
resonance,nikola tesla!!! wireless energy stationary waves wooo lol. energy for the world for free, just check out my site if your interested in teslas wireless resonant energy system, i describe his patents
@bobdahaxor give me a good week or two and i'll reply to what you just said.. Alright, i'll start with google and "Damped Harmonic Oscillation"
so...good way to prove how time can be affected by a round body swirling movement, like the female menstrual cycle and the moon.
Way too much time on your hands ! hope you can pay off your student loan with this one ! te he.........
that is so cool
The cans are conducting themselves as information passers, wow! :O
My philosophy teacher mentioned this in class and called it syncopatic rythm, he could not explain it because his discipline in in humanistics not in phisics, but this is easy to understand, the spring of the metronome gives a very small push that keeps the oscilation acording to the natural frequency of the pendulum P=MS(mass x distance) if this little push is summed to the push of the moving board they will syncronize, faster at the resonant frequency of the board less as the frequency is off.
It's about coupling or resonance between oscillating systems - systems that have got rhythm. Vibrations are transmitted along the base so that the metronomes end up in sync. Human beings can also be regarded as oscillating systems which is how we appreciate music and 'resonate' with each other. See 'Beethoven's Anvil - Music in Mind & Culture' by William Benzon, for example, for some theories about this.
What in the name of 2021 have I clicked on this masterpiece. THESE COMMENTS ARE LEGIT MY AGE-
What I mean is, regardless of physics and dynamics, you expect a metronome to keep his tempo. It's an instrument of precision, as much as you would expect an odometer or thermometer to give the correct data.
This demonstration is, in fact, really cool and interesting, but it simply made me become fan of ELETRONIC metronomes in the future ;-)
At first glance I said, "how lame?!" On 2nd glance, it's like WOW. Yes, there is interesting physics here. BUT ! Social applications ! Like how diverse individuals can be made uniform by subtle application of media. WHO controls the "cans" in our world, controls the world ? And how can we get away and take back control ? Something to think about.
Hey could i use this video for teaching purpose??
well I'm not talking about a rocking motion that could be explained by the motion of the metronomes, or by momentum. it's not going back and forth. its just bumping around really slightly at random intervals. but it prevents you from being able to see the pop cans moving back and forth
?
I thought more or less that it did have to do with the cans, with the weight of the arms motion throwing together against each other until they threw equal weight into the same direction?
I'd hate to see you ever get a teaching degree.. or meet you at a bar >.> you must be very anti social...
Since each metronome pushes on the board when it swings, and they are all on the same board, they are all effecting each other's swings. This means that for each swing, they move a little closer "in sync". It's this same principle that prevents them from going out of sync for very long.
how you did it man how it happens
what a fuck mn that was frikin asoemeeeeeeee
shiyt
Hello, I need Injection Locking commercial products, is there any? Please suggest me.
Not being a specialist of mechanics or physics, of course I don't know what I'm taking about! I never pretended it otherwise... I'm just a viewer seeing a strange physics behavior here.
So yeah, obviously it shook my faith in those metronomes.
Well, in our case all of them are the same but it shouldn't make that much difference. keep all the frequencies at 186 or higher. Then it should easily works. The base should not be heavu and the surface must be smooth. Hope this helps.
Its called Resonance. I studied in 10th grade about it. Nothing special in this video.
Just so someone is really interested. Same thing happens if you go to a good movie, a good concert, watch a good TV program or join a good discussion.
*** NOT SYNCHRONISATION ***
This is nothing to do with synchronisation.
This guy has you all fooled. He's doing research into human responses/reactions for some psychology degree.
We are nothing more than white mice.
i have another theory...i think that happend because he put the board with all 5 metronoms on those 2 cans , forcing the board to bend in the middle....and give metronoms diffrent angles...
Hey some nonsense thought here.
Wouldn't be neat if metronome follows my timing on playing the piano instead of vice-versa? Mmmm... Got to get some cans and wood and place them on top of my piano. :-)
Wow, science-y people bicker on youtube too.
I have to agree with stephendb - it is awesome. There's something really satisfying about watching them all come in to sync. :)
siddharta: when the platform is allowed to move freely, the synchronization happens much more faster because each metronome can transmit it's inner state change to others more efficiently
o experimento tem que ser feito de pijama, senão não funciona.
I don't know if my terminology is correct, physics is not my thing. If I understand correctly, is it safe to say the following: Their individual frequencies were over rode by what they shared in common and that was the carrier wave, the board balancing. Is this correct?
Nice toy! Can we change the sound? A Xmas carol will be nice thus will make a nice addition to my Xmas tree!!!
When the Dark Rainbow kills the beloved of one of the Champions of the Rainbow of Light, she turns against both gods of Ponyland for revenge. But you cannot kill a Rainbow.
Superb comment, Gorden Brown will have him in his Cabinate in a jiffy !
wOw
it's one of those past little things you would used to think about when you were a kid, among many other quirky things..
or at least i know i did >.>
@nosnibor800 recall from introductory mechanics that linear oscillators have fixed frequency given by system parameters e.g. for pendulum f = sqrt(g/L). In fact, this is simply a leading order term in an expansion about a small amplitude. In synchronization, nonlinear oscillators adjust their period by changing their amplitude. The non linearity of these metronomes comes from their large amplitude and the drive mechanism which injects energy into the system.
I hope this explanation helps.
Not at all. It's specifically called the entrainment of frequencies. Where there is a forced vibration on each other. They then "lock" in time with a lower frequency afterwards. Hense the movement of the cans due to the conversation of angular momentum. Sorry if I was unclear before. I forgot the name of the phenomenon. Also, WHO PUT -1? Guess you don't know what your talking about
This is actually a demonstration of damped harmonic oscillation. The metronome needles are at the same speed & the only variable left is time. When he adds the board there is a transfer of angular momentum because of the phenomenon of Angular momentum as a generator of rotation. As the soda cans move, angular momentum is being transferred from the needle, to the system & cans. This transfer of angular momentum is the damping force. This & conservation of angular momentum makes the needles sync
when any metronome swings it exerts a oscillatory force on the surface that is bearing it, a table or piano usually do not move due to this force (it's simply to small to move them).
once a metronome is placed on the board the force induces acceleration.
the metronomes are coupled via this acceleration, any metronome that swings out of phase feels a force (due to this acceleration) that tends to slow it's swing which in turn brings it back into phase....
The metronomes are creating a complex wave, and the rocking motion when set on the cans is created by this wave. The motion is a reaction to the wave (actually, the table was reacting too, but friction was stronger so it metronomes didn't move, and thus weren't doing any work and losing energy), and has a dampening effect on the wave by using up extra energy. This smooths out the irregularities in the wave until it reaches a low energy state: a standing wave.
I think you'll find it's spelt with an "s". You see in the country England there is this language that people speak. It may shock you to learn that it is called the English language. The United States have made an attempt to speak and write this language, much like yourself, and yet for the most powerful country in the world the ability to do so correctly has passed you all by.
= D
Just understanding that things have a natural resonant frequency doesn't explain it all. The energy has to be connected before something like this can occur, hence the common platform. It's a subtle, yet very powerful effect. However, it's probably a lot more interesting to an engineer than a burger flipper. Perhap the bored folks should go back to the 16YO girl getting beat up, and leave this stuff for the people who can appreciate it.
The main stuff is that the metronoms are on a moving surface. When the movement is against the weight it slow down the movement. When it is in the same way, it will accelerate it. So after a while, they all will be synchronized. At the beginning the movemant of the plank will follow up the majority of the metronoms (sum of the enregy of the movement of each one). If they was still on the table : no synchronization could happen.
Hmm... synchronous lateral resonance.. Hey didn't this happen to the Millenium bridge in London.. random foot steps from the hundreds of people started to get in sync as they started to balance against the lateral movement of the bridge. Unfortunately it fed back to the bridge causing it to sway more. They cured it with some dampers to prevent the bridge swaying so much.. This is a good example of how the sync occurs - see, an engineering degree never goes to waste LOL!!!!
Interesting, this somewhat violates the second law of thermal dynamics. But whilst taking the class I question the professor on the statement "Entalpy tends to make things more random" I asked him then to explain why crystals would form. His response was that there is the word "tends" in the statement.
But then, crystals are a somewhat lower energy state too.
Either way, neet proof guy. Good job.
Male Answer Syndrome: Lets say you put a plank on 2 barrels, get on and shift your weight to make the plank roll back and forth on the barrels. Easy. With 2 people you have to work together so you reinforce your effort, not weaken it. Same with the Metros. An out of sync Metro's force will be increased or decreased by the motion of the board, it's speed therefore will change, and it will be InSync with majority of the Metronomes. At least that's my guess. I don't know, I deliver pizza.
Very good!! Now explain the mechanics or the phenomenon of the synchronization of the oscillations, whether its micro or macro, atomic or sub-atomic, and all of the nuances that cause the 5 metronomes to converge to the point of synchronization? Can you make a line graph of that? What real world applications can we glean from the synchronization of the oscillations? The results are rather breathtaking. Are we on the verge of a major technological breakthrough as a result of this?
It seemed one or two were coming in and out of sync....is that supposed to occur? Near the end it seemed almost spot on, however.
Very neat.
Yeah, cobber, a couple of cans and we all play in time... cheers!
Although this is pure physics, but I could not help myself comparing the effect these 2 cans have on the pendulums, with the effect media has on people's minds. Both effects are intangible, relatively weak and unnoticeable, yet, over time, it is still powerful enough to eradicate everyone's own perception and independence to synchronize them in one herd, slowly and steady.
Entrainment is the process whereby two interacting oscillating systems, which have different periods when they function independently, assume the same period. The two oscillators may fall into synchrony, but other phase relationships are also possible.
Now what dose this mean for brain waves and Heart beats?
Frequency synchronization has a number of applicable uses. Anything from demolitions to transportation.
It can also be used to add to structural integrity. In California, USA there are many buildings and homes built on rollers to take advantage of the exact principle shown in this video for the purpose of making them more sound in earthquakes.
Neat stuff. It seems that the little pushes of the metronome arms when they change directions causes the arms to accelerate if they're going in the same direction and slow down when they're going the opposite way. My guess is that the metronomes would tend to synchronize to the metronome with the biggest moving mass. :-)
I would think the graph of this stabilization would look like the graph of a metronome with a lot of friction.
You know, going up (for example) 2 units, and down 1.8 units and up 1.6 units and so on until it approaches 0, perhaps asymptotically.
Think of a sinus curve with the amplitude approaching zero.
no, the frequencies dont have to bee off balance to get back into balance. The frequency stays the same, the syncronization occurs because the moving board helps to put the metronomes into the same place in the frequency. Imagine it as a sine curve, they are all at different parts, but the same period. The syncronization aligns them in the curve
It demonstrates how coupled oscillators become synchronized. If the metronomes were put on a hard surface there is no coupling between them and each act as independent oscillators (with slightly different natural frequencies). The plank and can-rollers allows energy to couple between them and the system eventually oscillates at the synchronized frequency.
I'm guessing this will happen with all metronomes as long as they are set for the same tempo. It's a function of conservation of energy and equal and opposite reaction. The energy is transferred from one metronome to the other when they are on a board which the metronomes impart energy (motion) to. VERY interesting.
The addition of 3 more metronomes would not make the system any more "chaotic" for what matters is the net push acting on the base, which would in turn accelerate the slower-than-average metronomes. The metronomes will eventually synchronize when the faster running ones slow down, slower running ones speed up, thus bringing system to equilibrium in somewhere between the two.
Does it work only for odd number of metronomes or any number of metronomes?
It's quite simple. The dinglebooble reverses the polarity of the trunion flange every half cycle, leading to an accumulation of imaginary inertia in Hilbert space, which is forced to re-discharge via an energetically favourable process. It's the same principle as used at the LHC to accelerate protons.