This demonstration is used to explain how starfish move without having a brain. www.kqed.org/science/1970271/... and how fireflies synchronize flashes in this TEDx talk by Orit Peleg • How fireflies communic...
@Charlie’s flying the plane. You can't see dislikes here. Wich is why Wesley G replied with "Legit an underated comment". Low amounts of likes and a good joke makes it underated you odd scented sock.
For those of you interested in the "why". There are an odd number of metronomes. This makes sure there's a force greater in one direction as 3/5 metronomes will swing that way. This exerts force on metronomes that aren't moving that direction, nudging them backwards from their momentum. This slight nudge backwards counters the pendulum effect causing the metronome to move further towards the side with greater force. Over time this will cause all metronomes to synchronize to the greater force pendulum. If you were to do this with four metronomes it might get interesting as 2 are going left, 2 are going right, but eventually friction in the bearings will force a side.
It's cool how the 4 on the right are lending some of their energy to the one on the left. Watch the left one. It has a smaller swing than the others and gradually gets greater until it matches the others. For anyone not understanding this the cans and board are the key. The board shifts slightly back and forth dampening some while adding energy to others until synchronicity is achieved.
@@alextownsend6662 What does earshot have to do with it? You could just remove the cans from the bottom and they wouldn't sync like this. It's the motion of the board that causes the synchronization, the energy of motion is what is being referred to.
This is exactly what happened with the Millennium bridge in London! People eventually walking in time and amplifying the bridge sway before it was deemed too dangerous to use, closing 3 days after opening.
If I had to guess, the swinging of each metronome got transferred into the plank they were balancing on, which slowly sped up and slowed down each one until they swung together.
Yes. It's all about transfer of energy. If the metronomes where simply placed on a flat solid table they would NOT sync up. It's the rolling platform underneath them that "evens" out the energy of the metronomes above.
@@utube9000 Actually they might still sync up, through tiny vibrations and shifting of the table. But it would take a long time. If they were placed on an "ideal" table that did not move or shift at all then they wouldn't sync up.
No. It will happen regardless of the swinging base, it may just take longer to happen. Grandfather clock pendulums will synchronize, clocks in a clock store. Its from a morphogenic field. In nature you see it with schools of fish swimming in unison, and flocks of birds. All moving as though they are of one mind, making movements far to quick for each single animal to be independently sensing and making assessments at every fraction of a second. That would be impossible. Its morphogenic fields. Its also how homing pigeons navigate.
Shoutout to the one metronome that refused to sync up and kept its own beat for as long as it could. Don't feel bad man, peer pressure is hard to resist.
@@simonhampson5082 Some, like you, do not have the ability to think on a larger scale like the person who set up this display or the soundmapper commenter. You are a single metronome.
I heard someone discovered it, cuz he watched 2 pendulum clocks getting synchronized like that while trying to sleep and then tried to unsynchronize them
It was discovered by the guy who invented the pendulum clock (to help sailors keep time with land for navigation purposes) and while he laid bed ridden with some illness or broken bone or whatever, he noticed that two pendulum clocks when supported by the same beam would slowly synchronize regardless of their starting position. So yeah, pretty much.
I wish that were true. It annoys me greatly that turn signals blink at different rates. The more makes of cars in the turning lane the worse it gets. IT HURTS!
@@PetCactusA_HarmlessLittlePrick geez mate if that's your only problem life is pretty good for you ....... I just ran out of beer, that's way worse than worrying about blinkers.
The energy at the top of the movements is dispersed down into the table (besides the normal constant forces acting against them) and because they all move with the same frequency of motion their transfer of energy harmonizes. Like ripples that overlap but eventually join into one larger ripple/wave.
As a kid I always listened and watched whenever nearby cars in the turning lane would match the tempo of my mom’s car’s turn signal lol. This feels like the exact same thing. The turn signals take turns alternating and then being perfectly in sync for a moment, then back to out of sync, then alternating, etc etc forever!
Damn, i saw this video a few years back and had no clue how it worked (was like 14 at the time) but coming back to it with a degree in physics i can confidently say i still have no clue whats going on
Its quite simple. When one of the metronomes swings a force is exerted on the bottles below which causes them to move. When multiple does that it moves in such a way that the small forces exerted on the bottles slightly alters the swinging motion of the metronomes until they eventually synchronize with each other. I have just gotten started in studying physics and could easily figure that out cmon dude.
@@antenym8947 i know😂😂 i just thought the joke would be more funny if i said i had no clue Also you would get a 1/3 for that explanation because it’s actually a frequency system with each metronome applying their frequency to the moving beam causing the beam to have an average frequency that it then applies back to the metronomes equalising till everything has the same frequency (tbh even my explanation is still not complete since i study physics to be a teacher rather then a researcher)
@@rykehuss3435 what energy? Although it can be explained using energy theory when explaining it with frequency the only energy in the system is in the frequency and thus you can use frequency instead of saying “the frequency of the metronome uses its energy to apply movement to the beam which changed that movement back into energy to change the frequency of the metronome” “better wording would be “metronome 1 applies its frequency to metronome 2 using the beam as a medium”
The extent of my HS physics teacher's explanation of particle-wave duality was to have us all play with water tanks generating waves without any context. Only decades later did I learn what was behind it. If I had had a decent physics teacher I might have gone into that field.
@@workingTchr A really good, inspiring teacher is SO important. I was fortunate to get the Science Master in my senior high school years and he was so good that I ended up doing a science degree with a chemistry major. Sadly, school is a long, drawn out pitch battle that tends to make hacks out of many teachers and students alike. They say Finland has a better approach.
Thank you for this helpful tutorial! I've been trying to synchronize my 53 metronomes for so long, and thanks to you my 6 year journey towards absolute synchronization has finally come to a close! I can finally complete the ritual and reunite with the elder god Bephemorus and be his subservient reaper of souls for the rest of eternity.
I think this happens because the metronomes average out one direction, so if three swing left and two swing right, the average is swinging left, causing the platform to move in that direction and weaken the rightward swinging of the two metronomes. Eventually, those two are so weakened that they stop entirely, but then the motion of the platform causes them to swing again, this time in the direction of the other metronomes, thus causing them to sync up. This is just a theory though, I have no way to confirm or deny this, but it makes sense to me.
kuramoto is an abstract synchronization model. This behaviour is modelled uisng some other coupling terms. If I remeber correctly, they have coupling terms similar to Vanderpoll oscillators.
Beautiful. It is important to note that the synchronising effect is communicated through their common base. The 'stragglers' are nudged into sync by the momentum of the 'increasing majority'.
I know your own understanding and what fascinates you within is what you look for in the external world. some will see God, some physics, some a 440 engine. I saw the vocal minority a part of a political communications theory called the spiral of silence. seems i wasnt the only one that applied this to the masses.
If anyone wonders how this works: the rocking of the base provides resistance for the swinging arms, which slows down their motion in the opposite direction, and propels it in the correct direction. It's like continuously nudging someone the right way when they're dizzy.
Thank you. I saw this too and wondered if this should be call spontaneous when it truly isn't. But everyone else it's talking about its beautiful rhythm
How about other situations like for example, one day I was sitting on my car with the alerts light turned on. The car right in front of me was also with its alert lights on and every now and then both them synchronizes. Is there a possible way where both of alert lights were affecting and /or interfering each other?
The explanation for this is that the vibrations and kinetic energy of each metronome is transferred into the surface below which moves depending on the net force. This same force is disturbed back to each metronome. The most stable energy state is when they are all in sync with each other and not conflicting each other’s movement. When they eventually reach that state, they can’t get back out the cycle since it’s the most stable.
0:41 All the clocks in the school collectively growing louder as the end of the class draws near but you've only answered 13 out of 100 questions so far.
I may not understand how it works when actually being the one to *witness* this phenomenon, but I DO understand, if only in application instead of theoretical, how boosting someone on a trampoline works, so I agree with very much so.
wow something has roughly the same BPM as a famous song for a few seconds and all of a sudden theres thousands of retards trying to get likes. fuck off:)
All together in one synchronized movement, all in step... Politically, this tendency to feel good in a model of minimized individuality has proven very dangerous.
@@Tenaxis it's a comment section. Abiding by youtube term and agreements then hes fine. Some people like myself like reading comments like those anyway. Comments don't need to appeal to everyone. That wouldn't make sense.
It's interesting how different the feeling can be. For me, it's the other way around. Somehow I have "respect" for this effect here, in a rather negative, intimidating way. For me, the whole thing radiates something, like several different currents are switched to the same, until there is only one direction, to which everyone submits. That has something of a dictatorship. I know I'm exaggerating, of course, it was just about the vibes i get from this scientific phenomenon :)
