The best part of this demonstration is the audio component. There are patterns in the sound, just as there are in the visuals. I know of no other demonstration where you can hear the pendulum "sing" like this. A great touch!
Yeah but it puts everything out of whack pretty quickly the ones with a shorter oscillation lose more energy than the ones with a higher oscillation and by the end they aren't lining up at all, well slightly.
This is just unbelievably cool! I never would have guessed they would have split apart into a disjointed mess and come back together and do it over and over again! I'd love to hear the science lecture that goes with this! Almost 70, never too old to learn!
The strings are different lengths which affects how long it takes to swing, that is the period. If you ever had a grandfather clock, the pendulum could be adjusted by raising or lower the weight on the end so that it swung exactly once per second. (The numbers following may not be the ones used in this demonstration but it illustrates the point). So what they did was determine how long to make the string so the first ball swung 50 times in 60 seconds. The next one is slightly shorter so it swings faster at 51 times in 60 seconds. The next 52 times and so on. At the end of 60 seconds they will all have completed a different number of COMPLETE swings so they will all be back in the original alignment. At 30 seconds the first ball will have completed 25 swings, the third ball completed 26 swings, etc. So every other ball are now lined up. The ball that completes 51 swings in 60 seconds completes 25-1/2 swings in that 30 seconds. So it is opposite the first group. The same with the balls that are “tuned” to 53, 55, etc in 60 seconds because they complete 24-1/2, 23-1/2, etc swings. It is the fraction of a swing that determines where each ball will be in relation to the others. At one point you see 4 lines of balls. That is when some have completed full swings, some half a swing past a completed swing, some 1/4, and some 3/4. All of the other patterns can be explained the same way. The “snake” is when the first completes a swing the next circle completes a fraction (say 1/10) more the next another 1/10 more and so on, so it looks like they are following each other. A lot looks like total chaos, but will eventually come back to where they all complete a swing at the same time.
This is the kind of creative teaching that can really make an impact on a student. Kudos to this teacher. For me it reminds me of orbital mechanics, and how they can be so chaotic and so synchronized at the same time.
The thing about orbital mechanics that always makes me crazy is the fact that if it's here for you to see, it's a stable system. If it were chaotic, it wouldn't be here. Just a long for the ride, hoping to overcome physics before our host star dies.
To correct the lady. The ones on longer strings don't go slower. They actually go the same speed. They just go further since their wave cycle is longer than those on shorter strings. Because their cycle is longer, the period to complete the cycle is longer giving the illusion that they go slower.
@WhoaBo Hunkered down in my bunker. All my windows and doors are boarded up but we can still hear the wind roaring and howling. It's very scary right now.
I had seen the Harvard video a couple years back and had to make one. My kids and I used golf balls, PVC pipe for the frame and fishing line. It worked great! A lot of fun. At a couple science fairs the kids would line up to take turns to lie under the pendulum wave as it cycled through ... Good stuff.
This is truly incredible. On a similar note, back when I was in high school (almost 60 years ago), the chemistry teacher had a demo showing water boiling at room temperature. An incredible "aha moment" for me. Became a chemist.
There are 16 balls total and according to the comments they swing between 50 and 65 times over the whole period until they are synced up again. Assuming simple pendulum, T=2pi*sqrt(L/g)So the longest one is 1.65x the length of the shortest one. The slowest one (longest) is 1.0404x longer than the second slowest. The second fastest one is 1.03149x longer than the fastest one.The longest one is 8' 4 5/64" (2.5419m)
Also, they are all connected to the same pipe. There is a small amount of energy being transmitted through that pipe continuously that harmonizes the action as well. This is simply provable with metronomes that do not sync when isolated.
@@timothyblazer1749They could all be suspended from different supports and it would still behave this way. It is not dependent on any feed back mechanism. It is strictly the different periods of oscillation because of the length of the strings.
@@bobh6728 I would bet money that it would be similar, but different in practice. I'm familiar with pendulums, and I did some work with double pendulums back in college. I don't think it would be as smooth.
Curious: were the small lengths of pipe that the pendulum balls swung over magnetized? Seems to me that the orbs would have come to complete stop after so many swings without some sort of energy to keep them energized. I'm just a layman but isn't friction a big factor here that should inhibit the orbs from swinging continuously? Just saying..
One of the most amazing things I have ever seen.... its breakdown of music theory by the magic of maths and physics really reminds me really how incredible the universe is. Thank you so much for sharing.
This is a perfect example of math being beautiful. When the frequencies of the pendulums line up at certain points it is mesmerising. An amazing demonstration!
This was wonderful to watch.Thank you for sharing it. I am grateful also to the people who took the time, care and know how to build thisI only wish that they had filmed it until it returned back to as it started
This is so relaxing to watch =) It will never work 100%,especially since you have them contacting objects (although barely), though this very contact is enough to throw off the whole flow. I do like the noise from the contact though, it allows you to both here and see the general patterns it forms. Great Video!
in the last moments of the video you can hear the person explaining how the physics work: #God did it. Pity to see such natural beauty soiled with #superstition .
Climate change. Climate change is the reason this happens. It’s all about climate change. Paint things orange you til the climate changes back to the previous time the climate changed and then the climate won’t change anymore and then unclimate change will be the new climate change change
The best way to study the physics behind this contraption is to have each kid run through it infividually. The kids that make it to the other side without getting knocked unconscious will have a proper understanding of the laws of motion. The kids that don't make through will understand how the concept of force works! I call it a hands on approach to learning.
Always the same patterns and same conclusions unless disrupted or friction or function has changed endless possibilities, but if left, the same patterns exist singular or together. Much like our planet and how we move on it or share the space within it. Outside of our planet and around our planet. We are all connected and have our own momentum trying to change that or throw it off of balance could be detrimental. That would change the course and cause for concern and have the same altered results. Bumping or swaying out of control ends up out of tune and can distrupt or bring everything to a halt or cause chaos and, in turn, would be considered out of control and lose its meaning and purpose. These are very humbling and very gentle reminders that we should be more aware of our movement. It affects everything in us and around us. Cause and Affect. Nurture Nature. Self love Give love. Find Peace Create Peace. One With God Our Creator.
It's interesting, the wave form changes like music notes, if contraption was 10x longer I bet the disorganized moments would show larger numerous wave forms.
Top beam is forced into a waveform flex by the weight of the initial force... Thereafter the waveform forms in the objects below and the rest is just momentum conservation.
Nice one! The size of it takes it from impressive to magical. I built one too, well a few but only have one video. It's not a great video but it's a pretty good demonstration, along with other forms of harmonic systems. You should check it out.
It demonstrate that they're governt by laws of Nature...motion, gravity, dynamic, math, physics and whatnot... There was NOT a single moment of chaos even it may appear so... Is nature ever in chaos? Does laws of nature ever create or allow chaos if laws of nature are unchangeable? Also un-bribable and un-cancelable. Unlike "laws" of men....!? So to me lawmaker is ONLY God/Nature. And what men makes is edicts, commands, orders, wishes.... Wouldn't you agree?
period for suitably small angle is 2*PI*sqrt( l / g). Not sure how a non rigid pendulum would work, but different supporting string/cable lengths is all you need for different periods - mass does not matter
Michael Bauers One question I did have was the bells. They seem to work via contact with the "pendulums" which is another variable - wondering how they minimized the slow down due to this. Of course wind would also mess up the pattern if it was slowing down some, and speeding up others.
+Michael Bauers If you look, you can see some metal pieces attached to the bottom of the bowling balls. It wouldn't take a very large force to make the chime ring, and if you attached them to the bowling balls via something that had give to it, it wouldn't really leech away much momentum from the swing.
hello, i really want to come visit this. i know it says it is not open to the public but can someone please direct to me where i could visit one of these in person if its not this one. what a shame they do not open this to the public.. to share this beauty with those interested. thank you
Doesnt this happen because the balls are different weights and swing at different inertia forces? Or is it because the balls are hitting differently shaped or sized sounding charms? Lol so rad
![[UNCUT] เก็บ "สจ.โต้ง" เอี่ยวมาเฟีย รู้ตัวคนบงการ ก่อนสั่งลั่นไก I คนดังนั่งเคลียร์ I 13 ธ.ค.67](http://i.ytimg.com/vi/o-J_p62D40w/mqdefault.jpg)
The best part of this demonstration is the audio component. There are patterns in the sound, just as there are in the visuals. I know of no other demonstration where you can hear the pendulum "sing" like this. A great touch!
Yeah but it puts everything out of whack pretty quickly the ones with a shorter oscillation lose more energy than the ones with a higher oscillation and by the end they aren't lining up at all, well slightly.
“Sing”?
Except for the coughing. :(
@@owenbartrop8963 Would be better without physical contact, using a light beam to trigger sounds.
You have not been around long.
This is the sort of stuff TH-cam should be for.
I don't know. I think breaking my brain once is enough for one day.
It used to be
Yeah this and fart videos
This is just unbelievably cool! I never would have guessed they would have split apart into a disjointed mess and come back together and do it over and over again! I'd love to hear the science lecture that goes with this! Almost 70, never too old to learn!
The strings are different lengths which affects how long it takes to swing, that is the period. If you ever had a grandfather clock, the pendulum could be adjusted by raising or lower the weight on the end so that it swung exactly once per second.
(The numbers following may not be the ones used in this demonstration but it illustrates the point).
So what they did was determine how long to make the string so the first ball swung 50 times in 60 seconds. The next one is slightly shorter so it swings faster at 51 times in 60 seconds. The next 52 times and so on.
At the end of 60 seconds they will all have completed a different number of COMPLETE swings so they will all be back in the original alignment.
At 30 seconds the first ball will have completed 25 swings, the third ball completed 26 swings, etc. So every other ball are now lined up.
The ball that completes 51 swings in 60 seconds completes 25-1/2 swings in that 30 seconds. So it is opposite the first group. The same with the balls that are “tuned” to 53, 55, etc in 60 seconds because they complete 24-1/2, 23-1/2, etc swings.
It is the fraction of a swing that determines where each ball will be in relation to the others. At one point you see 4 lines of balls. That is when some have completed full swings, some half a swing past a completed swing, some 1/4, and some 3/4.
All of the other patterns can be explained the same way. The “snake” is when the first completes a swing the next circle completes a fraction (say 1/10) more the next another 1/10 more and so on, so it looks like they are following each other.
A lot looks like total chaos, but will eventually come back to where they all complete a swing at the same time.
No, you never are! Keep looking and learning.
@@bobh6728
Teachers are a special breed, they make all the difference in learning...
@@bobh6728
I haven't done the research yet, but what you say sounds very plausible!
@@fredgervinm.p.3315But most only teach what they are told too unfortunately
This is the kind of creative teaching that can really make an impact on a student. Kudos to this teacher. For me it reminds me of orbital mechanics, and how they can be so chaotic and so synchronized at the same time.
He is ONE AWESOME teacher - a true educator!!!!! I loved his classes and his hands-on approach.,
Except, theyre saying that its God doing this...
No, its physics.
The thing about orbital mechanics that always makes me crazy is the fact that if it's here for you to see, it's a stable system. If it were chaotic, it wouldn't be here. Just a long for the ride, hoping to overcome physics before our host star dies.
@@TheHunted385 And we have physics because of....
You're sooo close to getting it.
@@squidvis We dont know why we have physics. Claiming its God is just as speculative as claiming were in a simulation or its made of magic.
To correct the lady. The ones on longer strings don't go slower. They actually go the same speed. They just go further since their wave cycle is longer than those on shorter strings. Because their cycle is longer, the period to complete the cycle is longer giving the illusion that they go slower.
I think they were going by the colloquial meaning of slower. Not that the velocity is lower, but that it takes longer to complete a cycle.
Try explaining your way to a child lol
@WhoaBo Hunkered down in my bunker. All my windows and doors are boarded up but we can still hear the wind roaring and howling. It's very scary right now.
The polyrhythms this creates are absolutely beautiful, music in a pure form
Simply amazing. This reminds me the importance of experiment and see the real thing working, not just computers simulation
Oh no people are growing up and seeing things on a screen before they see it for real 😨😰🤕
I had seen the Harvard video a couple years back and had to make one. My kids and I used golf balls, PVC pipe for the frame and fishing line. It worked great! A lot of fun. At a couple science fairs the kids would line up to take turns to lie under the pendulum wave as it cycled through
... Good stuff.
It's amazing to think how far we have come with science and yet such a simple thing is so mesmerizing and beautiful.
That's pretty awesome to see there's so many different patterns in a simple wave...
I. am 73. I never saw this before. Fascinating!
There's much better examples of it. This one was pretty crude.
Конечно не видел. Раньше не было ютуба
We are all the same age on the Internet, because of it
This is truly incredible.
On a similar note, back when I was in high school (almost 60 years ago), the chemistry teacher had a demo showing water boiling at room temperature. An incredible "aha moment" for me. Became a chemist.
Vacuum bell?
Boiling at room temperature? Do you mean evaporation?
Water in the vacuum chamber did it for me too, alarm clock in the vacuum chamber was another good one.
A mathematician can explain this....😳
@@enekaitzteixeira7010No, it would be boiling.
There are 16 balls total and according to the comments they swing between 50 and 65 times over the whole period until they are synced up again.
Assuming simple pendulum, T=2pi*sqrt(L/g)So the longest one is 1.65x the length of the shortest one. The slowest one (longest) is 1.0404x longer than the second slowest. The second fastest one is 1.03149x longer than the fastest one.The longest one is 8' 4 5/64" (2.5419m)
That hurts my brain just reading it
Also, they are all connected to the same pipe. There is a small amount of energy being transmitted through that pipe continuously that harmonizes the action as well. This is simply provable with metronomes that do not sync when isolated.
@@timothyblazer1749They could all be suspended from different supports and it would still behave this way. It is not dependent on any feed back mechanism. It is strictly the different periods of oscillation because of the length of the strings.
@@bobh6728 I would bet money that it would be similar, but different in practice. I'm familiar with pendulums, and I did some work with double pendulums back in college. I don't think it would be as smooth.
Curious: were the small lengths of pipe that the pendulum balls swung over magnetized? Seems to me that the orbs would have come to complete stop after so many swings without some sort of energy to keep them energized. I'm just a layman but isn't friction a big factor here that should inhibit the orbs from swinging continuously? Just saying..
im not a very science person but this was very interesting and made me want to learn more....loved it
10/10
Thank you for all that information in the description! that vote was well deserved
I love the incorporation of sound to the visuals of the wave!❤
And then the teacher said; "now kids we have the obstacle course ready" - first one through get's a free dinner!
I thought it was an obstacle course too, looking at the thumbnail.
😂
Class buffoon:
-¡Leeeeeroy Jjjjjjjjenkiiiiiiins! Muah-hahaha!
One of the most amazing things I have ever seen.... its breakdown of music theory by the magic of maths and physics really reminds me really how incredible the universe is. Thank you so much for sharing.
th-cam.com/video/zAxT0mRGuoY/w-d-xo.html
Well formulated. I tried to say the same thing, no success.
Oh... I thought the universe happened by random accident!!!!!
Pretentious chav.
Wonderful pendulums is so fascinating. Great artwork! Congratulations on a great video too!.
YES! Thank you for this awesome demo!
If we ever want to catch up in STEM we need more teachers presenting kids science in an amenable manner like this.
As a Youth Bowler myself, this is very creative. Great job !
This is a perfect example of math being beautiful. When the frequencies of the pendulums line up at certain points it is mesmerising. An amazing demonstration!
Very well done! Fantastic visual explanation!
I could watch and listen to that for hours on end!
Love this! Makes me miss our place up there in those mountains! Great folks up there!
I hope that kid survived whooping cough.
I think he hacked up part of his lung watching this demonstration. Lol
I feel so horrible for laughing as hard as I did at this comment.
Thought it was the vid
It's AIDS. Believe me, I would know.
poor child. he sounded really ill. i hope no one else came down with whatever he had.
three minutes of staring ... wow. #physics
Thank you!
Someone get that damn kid with a cough some Robitussin.
Yeah after the VID I still look at a coughing person like they are a serial killer
Bravo! Clap, Clap!!! Very intriguing... Loved it. Thanks for the awesome video!!
Physics is so cool. And building big examples of complex physical principles, in your backyard, is just plain awesome!
I love how this brought out such enthusiasm from the kids! Yay teachers :)
These kids are never going to forget this day.
And some might even learn a physics Job later.
This makes all the sense in the universe!
Шикарно! Я смотрел затаив дыхание! Очень показательно и доходчиво! Спасибо!!
I love this and am bent on getting a few built in Indy!
Summer camp gauntlets have come a long way
I'm not sure how you didn't get more likes. I'm still chuckling over here.
One of the best videos on TH-cam
The entire history of the Universe and its cycles in this wonderful short experiment
Классное видео!
Физика!
Amazing thing to do outdoors with kids! Just fantastic. I love all the Oooohhhs and Ahhhhs!
This is also amazing demostration of how you can nurish 1000 mosquitos in the quickest time. Nice job..😂
Thank you for posting and for your wonderful post explaining it and including links. :-)
I was almost asleep until 2:53
This was wonderful to watch.Thank you for sharing it. I am grateful also to the people who took the time, care and know how to build thisI only wish that they had filmed it until it returned back to as it started
They’ve got some balls showing this
Some big brass balls
Top class observation!!!
This is so relaxing to watch =)
It will never work 100%,especially since you have them contacting objects (although barely), though this very contact is enough to throw off the whole flow. I do like the noise from the contact though, it allows you to both here and see the general patterns it forms.
Great Video!
in the last moments of the video you can hear the person explaining how the physics work: #God did it. Pity to see such natural beauty soiled with #superstition .
If God is all then how could it had not been God? duh. lol
Zarah McIntosh "God" isn't all, that's how. Fairy tails are for children.
Shane Oshea lol then it means we all have different definitions for "God".
Zarah McIntosh And most likely they're all wrong.
Vigilant Pigeon I know I'm not wrong :) and there's nothing anyone else can do about it.
I am reminded of harmonies separated by octaves
This is such a cool demo
My science teacher Mrs. Ellis said this is her favorite video and she watches it everyday
That's how all the planet is moving around the sun, dancing.😊
Most. Satisfying. Vid. Ever.
And Kids asked their teacher: "Why is this happening, how does it work?" He replied "I have no idea, but this is awesome, right?"
Lol 😆
Because time of pendulum depends on length of pendulum
Longer needs long time 🤠
It's because the string that's holding each mass is shorter/longer
'Homeschooled?'
Climate change. Climate change is the reason this happens. It’s all about climate change. Paint things orange you til the climate changes back to the previous time the climate changed and then the climate won’t change anymore and then unclimate change will be the new climate change change
Best illustration of life I have ever seen. I'm 54
I almost got myself hypnotised watching this
You’re not exploring how the world works, but how your mind works.
He-ey !!
1:17 By far the best pattern!
So cool! Thanks for sharing! :)
It's some kind of relaxing watching this.
Very well built !! Giant -so cool 💫👏👏👏
This just popped up and I'm glad it was so cool 😎
The best way to study the physics behind this contraption is to have each kid run through it infividually.
The kids that make it to the other side without getting knocked unconscious will have a proper understanding of the laws of motion.
The kids that don't make through will understand how the concept of force works!
I call it a hands on approach to learning.
I’m one of those kids in the Video and It took so much to stop us from constantly being in the Swing zone lol
Now that is a field trip those kids will remember.
Everyone should watch this at least once in their life
Gravity and motivation. Beautiful.. 😊
beautiful physics.
I was waiting for someone to run through the dam thing 😂
I LOVE this!!! Gotta share!
Always the same patterns and same conclusions unless disrupted or friction or function has changed endless possibilities, but if left, the same patterns exist singular or together.
Much like our planet and how we move on it or share the space within it.
Outside of our planet and around our planet. We are all connected and have our own momentum trying to change that or throw it off of balance could be detrimental.
That would change the course and cause for concern and have the same altered results.
Bumping or swaying out of control ends up out of tune and can distrupt or bring everything to a halt or cause chaos and, in turn, would be considered out of control and lose its meaning and purpose.
These are very humbling and very gentle reminders that we should be more aware of our movement.
It affects everything in us and around us.
Cause and Affect.
Nurture Nature.
Self love Give love.
Find Peace Create Peace.
One With God Our Creator.
That is cool!
How long does the wave last, or does it last forever? Fascinating! I need to learn physics!
They lose energy over time. Each swing reaches a slightly lower height than the one before, so it will eventually stop.
till it stops
It's interesting, the wave form changes like music notes, if contraption was 10x longer I bet the disorganized moments would show larger numerous wave forms.
He was my professor last year! Awesome awesome guy who makes some super cool stuff and is a super cool teacher! haha
+Grayson Nolen What's his name and how do I contact him?
+David Michael His name is Jeff Goodman and his email is goodmanjm@appstate.edu.
More please and thank you..
Awesome
Now kids, you must run through this without getting hit by the bowling balls or you're not getting back on the bus!
1:20 great
AWESOME!
この大きいサイズは良いね👍✨
these kids are alot more patient than i woulda been lol
I’d be the one to trip into the thing and get the crap beaten out of me by bowling balls
Wow that was amazing. Bet it took ages to configure. awesome results though
Top beam is forced into a waveform flex by the weight of the initial force... Thereafter the waveform forms in the objects below and the rest is just momentum conservation.
lindo e perfeito
Nice one! The size of it takes it from impressive to magical. I built one too, well a few but only have one video. It's not a great video but it's a pretty good demonstration, along with other forms of harmonic systems. You should check it out.
I loved it . What's the origin of sound
Now tell me physics is dull😂. Pendulum theory and beat-frequency all in one demo. Brilliant.
2:10 "more slowly"? im german, so i am not sure, but wouldnt it be "slower" ?
eh either way
A noun might be slower but it goes more slowly. Adjective (slower) applies to noun, adverb (slowly) applies to verb.
So, what does it demonstrate?
It demonstrate that they're governt by laws of Nature...motion, gravity, dynamic, math, physics and whatnot...
There was NOT a single moment of chaos even it may appear so...
Is nature ever in chaos?
Does laws of nature ever create or allow chaos if laws of nature are unchangeable?
Also un-bribable and un-cancelable.
Unlike "laws" of men....!?
So to me lawmaker is ONLY God/Nature.
And what men makes is edicts, commands, orders, wishes....
Wouldn't you agree?
period for suitably small angle is 2*PI*sqrt( l / g). Not sure how a non rigid pendulum would work, but different supporting string/cable lengths is all you need for different periods - mass does not matter
Michael Bauers One question I did have was the bells. They seem to work via contact with the "pendulums" which is another variable - wondering how they minimized the slow down due to this. Of course wind would also mess up the pattern if it was slowing down some, and speeding up others.
+Michael Bauers If you look, you can see some metal pieces attached to the bottom of the bowling balls. It wouldn't take a very large force to make the chime ring, and if you attached them to the bowling balls via something that had give to it, it wouldn't really leech away much momentum from the swing.
hello,
i really want to come visit this. i know it says it is not open to the public but can someone please direct to me where i could visit one of these in person if its not this one. what a shame they do not open this to the public.. to share this beauty with those interested.
thank you
Perfect video to watch at 4:00 AM
THIS is how to get kids interested in science! They couldn't take their eyes off of it. 😊
Doesnt this happen because the balls are different weights and swing at different inertia forces? Or is it because the balls are hitting differently shaped or sized sounding charms? Lol so rad
Yes, thank God for making the governing physical laws, to create beautiful thoughtful examples like this.
I almost creed when She said that at the end. 🤯😫😭
The explosion at the end was the best
I love this! As a homeschooler, where could I find a lesson or unit that goes with this?
LSD? Check. Bowling ball pendulum? Check. I know what _I’m_ doing for the next 12h.
How does touching the copper pipes not significantly slow down the swing of the bowling balls? what makes the connection?
I love how humans will gather and stare in expectation together. Just staring.