The equation looks like this; T=2π√(L/g) where g=9.8 (approximate acceleration due to gravity on earth in metres/second^2) "L" being the length of the pendulum string, "T" being the period of 1 oscillation. if the pendulum string is shorter, the time taken to swing from one side to the other and will be shorter, this can explain the different time the swinging actions take, giving the wave like effect. Mass, height and shape are not important as air resistance is negligible in this scale of experiment guys.
I know the equation but it is not complete, it does not take into account the effect of the resonance with the adjacent pendulums, in the case in which the pendulums are in ferromagnetic material, it is also necessary to take into account the magnetic fields which mutually influence each other .... real situation is much more complex, the equation you mentioned applies to a single pendulum sufficiently far from other pendulums, placed on the equator at 4 meters above sea level, where G = 9.80665 m / s², in a vacuum sealed chamber pushed, at the temperature of 4 ° C and the only force exerted on the pendulum is that of gravity, it is a purely theoretical condition far from the real conditions and would not give an exact result anyway ...
D. Ryan The shape isn’t even called “DNA” It’s a double helix... you can find it in tons of places... even the strands of keratin that make up your hair
Thx for this. It explains a lot of things. :) “If you want to find the secrets of the universe, think in terms of energy, frequency and vibration.” ― Nikola Tesla
This is amazing. I thought of doing something similar with bowling balls and steel reinforcement rods out in the backyard, you know, one of those executive toy ball bearing clicker novelty things, only on a much bigger scale. This kid who lives down the street from me actually built one and got it swinging, but he stepped in between it and they had to take him to the clinic.
abacada seesyou drugs. or at least that was my first thought when I saw the video; how I could have watched this for hours when I used to smoke a lot of weed.
Nice. For version three, how about covering each pendulum with a disc of reflective tape and filming in the dark with a bright light near the camera lens?
It's dancing with me. It's like this incredibly benevolent force that wants me to know that there's no reason to be afraid. Sometimes there's so much beauty in the world, it makes my heart burst.
+Nova Hayes It's just because pendulums have a different period swing depending upon their length. He just has a gradually lengthening bit of string for each glowy bit. Kind of looks like a xylophone, but with strings and masses instead of bars.
damn, you should start a museum/exposition with all your illusions/science/art! I'm sure everyone would love to pay entrance to see a lot of your work in real life.. I would!
Our brains make it amazing. We see patterns, waves and we understand it as a kind of order. Maybe there's some kind of order but we can see just lets say 10% of it in this simply movements. The more creative mind the more subjective patterns. you know what I mean.
It's not really our brains, the wave occurs becuase each pendulum has a slightly different frequency of oscillation from the different lengths of string. This kind of order is simply inherent to the universe, or more specifically, periodic motion. We see a pattern because there is one, nothing about it is random.
this is the coolest thing my eyes have ever been bestowed upon when i saw this and really noticed all the patterns i was amazed this is truly amazingly beautiful keep up the good work man and make some more stuff like this!
I am not too sure about it and I have only thought about it for a few minutes but I think you just have to keep the differences constant. So you would have to space the nuts apart in the same distance and, which is the most important of course, have the lengths of the strings differ in the same amount. I believe he used twelve nuts. Take one nut, hang it up and divide the length of the string you left by twelve (so it has to be the one with the longest). Then go down in these 12th steps for each
The mass of the weights is the same. It's the length of the strings. The different lengths create different frequency in the speed that each weight swings back and forth.
T = 2(pi)sqrt(L/g) where T = period of pendulum L = length of rope g = acceleration due to gravity this works for pendulums that are displaced a small degree. the L of each pendulum is longer than the last, therefore, according to the equation, the T of each pendulum is bigger than the last. some interesting things i noticed: the pattern of the oscillating pendulums resembles sinusoidal waves. 1 wave - 0:39 3 waves - 0:50 2 waves - 0:57 3 waves - 1:10 1 wave - 1:20 very peculiar
Actually, it's called differential equations. We can describe how things move in reality by observing multiple instance, determining relationships and constructing physical laws. These laws can then be used inside a differential equation to account for various forces that attribute to the movement of the objects. These differential equations can be used to find the length each object should hang to create this effect, and hence, you get this.
The lenght of the string affects the period of the pendulum, that's how these masses, despite of being released at the same time, move at different rates. T= 2pi Square Root( lenght of string/ gravity) If analyzed with Energy, they all have different Gravitational Potential Energy and therefore, different Kinetic Energy. GPE=KE mgh= 1/2mv^2
The time for them to complete one "round", is T=2*pi*sqrt(length/9.81), and thus the longer ones take more time to swing... that creates the changing patterns :)
FABULOUS! I'm blending science and literature with my 5th grade students tomorrow - looking at pendulum patterns and waves, and then into the Pit and the Pendulum - to go with our late October study of Edgar Allen Poe! This is the icing on the pendulum cake of videos! THANKS!
@ThreeCheersForBryan - Doesn't matter as long as the lengths are all of equal increments and distance apart. For example, if one string is 18in. then make sure the next is 17, the next is 16, 15, 14, etc. Also each string needs to be the same distance apart.
If you notice the pattern changes throughout the video... something has to be varied for the patterns to change. If it is simply just to do with the length of the strings then the pattern would remain the same. The frequency of the light is being varied to create the variety of patterns. I know this... I did this experiment during my A-levels.
Because longer pendulums have longer swing times or periods,so if they all start at the same time, the pendulums will gradually get more and more out of phase and will eventually line up again.
Think you need to resit your A-levels my friend. All that's different in each case is the length of the string. The time period of a pendulum is approx. equal to 2pi*sqrt(L/g) where L is the length of the string and g the acceleration due to gravity. Because each one has a different time period, the small differences accumulate over each successive swing of the pendulum. Eventually, two pendulums that were only 0.5secs out of sync are now much further apart and so their relationship changes.
Great! Congrats, it's a nice post! I've seen an old version, without lights. This one is really impressive... The other two videos of same subject are very good too.
Idk if anyone else noticed but the number of sets of waves in this video is exactly 10 if you count them correctly: 1, 3, 2, 3, 1. I wonder if there's a mathematical/physical formula able to explain this?
The double helix pattern always excited me the most seeing this in my younger days. :) Thank you for the great video. :) Got one with a strobe blacklight?
@Steve18282 Its actually called a helix :) DNA refers to deoxyribonucleic-acid which cannot be quantified as singular. The form it takes however, is a helix :) or maybe double helix, i can't remember.
@TrinityInfinity54272 Synesthesia is basical when senses are mixxed. so when u see something u could also hear it, seee every letter as a diff color, see sound...i think all combinations are posible i can see sounds, hear things i see(like when theres no real sound), see feeling (like pain or something like that), see smell So the patterns that they swing in make have a sound to me (i can slightly feel them too)
I'm almost obsessed with the song to this video! The show was quite spectacular and very fun to watch! Would you mind telling me the artist and song title to this? I'd appreciate it. Thx!
The entire motion like behavior is an illusion. A precise mathematical model of the phenomenon can be Obtained by solving for a dynamical system of 12 Differential equations one for each pendulum. Variation of the pendulum length leads to the discrepancy in the period. By Solving for the position of each pendulum (select an appropriate coordinate to project the position) at an arbitrary time t > 0 , you will get a beautiful description of the motion. Have fun.
LOVE this video...And I am VERY interested in the music track that you used...Who composed it, and who performed it??? Keep up the AWESOME optical illusion stunts....Wow!
I remember this experiment when I did A Level Physics. The key to understanding this is the frequency of the light source. The light source is basically turning on and off very fast but our eyes see a continuous light. By varying the speed at which the light is turned on and off, you see the pendulum objects in a different position.
Great!!! But where is the light that coming out from the bulb you use to shine on those pendulums? Cuz you turn off all light in your room so that violet light is still supposed to be shining right?
![Noob To Max With DRAGON REWORK In Blox Fruits [FULL MOVIE]](http://i.ytimg.com/vi/LnBMOinoOvA/mqdefault.jpg)
simplicity + accuracy + creativity = spectacular demonstration.
What?
The equation looks like this; T=2π√(L/g)
where g=9.8 (approximate acceleration due to gravity on earth in metres/second^2)
"L" being the length of the pendulum string, "T" being the period of 1 oscillation.
if the pendulum string is shorter, the time taken to swing from one side to the other and will be shorter, this can explain the different time the swinging actions take, giving the wave like effect.
Mass, height and shape are not important as air resistance is negligible in this scale of experiment guys.
You're a genius.
In short, T² is directly proportional to L.
I know the equation but it is not complete, it does not take into account the effect of the resonance with the adjacent pendulums, in the case in which the pendulums are in ferromagnetic material, it is also necessary to take into account the magnetic fields which mutually influence each other .... real situation is much more complex, the equation you mentioned applies to a single pendulum sufficiently far from other pendulums, placed on the equator at 4 meters above sea level, where G = 9.80665 m / s², in a vacuum sealed chamber pushed, at the temperature of 4 ° C and the only force exerted on the pendulum is that of gravity, it is a purely theoretical condition far from the real conditions and would not give an exact result anyway ...
T=2π√(L/g) is only an approximation for an ideal pendulum where θ is so small that sinθ ≈ θ
So confusing
at times, it looks like DNA spinning around
At 0:55 and 0:58
Reel Hawkins I had the same thought. Surely they here has to be a relation between our dna and wave probability.
D. Ryan no
D. Ryan The shape isn’t even called “DNA” It’s a double helix... you can find it in tons of places... even the strands of keratin that make up your hair
At times also like RNA ;)
I have nothing better to do than watch this over and over yay
Great video! I saved as a favorite to show to my six grandchildren. They're going to love it!
Wayne Schmidt Lucky grandchildren
New Sony PS5 Loading screen...
SONY MAKE THIS A THING!!!
+FR - Clan I actually find Xbox better then PS1,2,3,4,fi...oh wait thhat one isnt already out
Yes!
Sony! Please! This would be great!
it will be released soon
Axel Van Eijck hi
Thx for this. It explains a lot of things. :)
“If you want to find the secrets of the universe, think in terms of energy, frequency and vibration.” ― Nikola Tesla
This is amazing! Congrats! :)
Eae procópio de 8 anos atrás. Como vai a vida?
@@jotave7358 Ô!... Melhor do que nunca! :)
8 Years ago, jesus chris
Wow I have never seen anything like this on my 91 years on earth. Amazing
This is amazing. I thought of doing something similar with bowling balls and steel reinforcement rods out in the backyard, you know, one of those executive toy ball bearing clicker novelty things, only on a much bigger scale. This kid who lives down the street from me actually built one and got it swinging, but he stepped in between it and they had to take him to the clinic.
Create a 10 hours version of this!
Why?
abacada seesyou
drugs.
or at least that was my first thought when I saw the video; how I could have watched this for hours when I used to smoke a lot of weed.
it won't go for 10 hours, unless you're in vacuum and the strings are greased up real well hehe
@@blipblop92 lol
I could watch this for hours..
I'm really trying hard to figure out why 250+ people gave this a thumb down
sad its 429 now :/
446 as of today
Nice. For version three, how about covering each pendulum with a disc of reflective tape and filming in the dark with a bright light near the camera lens?
It's dancing with me. It's like this incredibly benevolent force that wants me to know that there's no reason to be afraid. Sometimes there's so much beauty in the world, it makes my heart burst.
This is just NUTS!
What the actual fu*k.
I AM GOING TO ATTEMPT THIS
Nova Hayes I also made a shader based on this. www.shadertoy.com/view/XlXSD8
+Nova Hayes It's just because pendulums have a different period swing depending upon their length. He just has a gradually lengthening bit of string for each glowy bit. Kind of looks like a xylophone, but with strings and masses instead of bars.
Love this !!
***** no one says it any more neither should you
Saw this originally in 2011, and now, in 2016, still amazes me. Awesome
How about now in 2023?
Watching this in the new era where Hamilton-Ferrari is a reality (2025).
damn, you should start a museum/exposition with all your illusions/science/art! I'm sure everyone would love to pay entrance to see a lot of your work in real life.. I would!
Our brains make it amazing. We see patterns, waves and we understand it as a kind of order. Maybe there's some kind of order but we can see just lets say 10% of it in this simply movements. The more creative mind the more subjective patterns. you know what I mean.
wow. :)
It's not really our brains, the wave occurs becuase each pendulum has a slightly different frequency of oscillation from the different lengths of string. This kind of order is simply inherent to the universe, or more specifically, periodic motion. We see a pattern because there is one, nothing about it is random.
Kevin Stitely WOW. :O
very cool
very cool
Awesome! My physics professor showed my class this during a lecture, and I loved it!
That's a real good explanation of the time period of a pendulum being independent of the bob mass and only depends on the length of the string!
of all of your videos this one I have found to be the most thought provoking, there is just so much going on ...
This is one of the coolest videos I have ever seen!
this is the coolest thing my eyes have ever been bestowed upon when i saw this and really noticed all the patterns i was amazed this is truly amazingly beautiful keep up the good work man and make some more stuff like this!
I am not too sure about it and I have only thought about it for a few minutes but I think you just have to keep the differences constant. So you would have to space the nuts apart in the same distance and, which is the most important of course, have the lengths of the strings differ in the same amount. I believe he used twelve nuts. Take one nut, hang it up and divide the length of the string you left by twelve (so it has to be the one with the longest). Then go down in these 12th steps for each
I always come back to listen to the music.
It brought me back to 2014...
I have nothing better to do than watch this over and over;)
The mass of the weights is the same. It's the length of the strings. The different lengths create different frequency in the speed that each weight swings back and forth.
Never thought the period of a pendulum could be put to such cool effect. Thank you so much physics.
Excellent use of light to demonstrate this motion. Very well done!
one of the most beautiful things i've ever seen.
T = 2(pi)sqrt(L/g)
where T = period of pendulum
L = length of rope
g = acceleration due to gravity
this works for pendulums that are displaced a small degree.
the L of each pendulum is longer than the last, therefore, according to the equation, the T of each pendulum is bigger than the last.
some interesting things i noticed:
the pattern of the oscillating pendulums resembles sinusoidal waves.
1 wave - 0:39
3 waves - 0:50
2 waves - 0:57
3 waves - 1:10
1 wave - 1:20
very peculiar
it's so cool how it goes from one wave to multiple and back to one :D
Woah!! My brain is BLOWN! how is this possible?! They were all released at the same time!
The Blender!ZER The longer the strings are the slower they swing. It's that simple.
i am definitely making one! I dont know how i could have lived so long without one.
Actually, it's called differential equations. We can describe how things move in reality by observing multiple instance, determining relationships and constructing physical laws. These laws can then be used inside a differential equation to account for various forces that attribute to the movement of the objects. These differential equations can be used to find the length each object should hang to create this effect, and hence, you get this.
wait so you take boring stuff and turn it into some one the coolest shit i have ever seen? i like this guy.
The lenght of the string affects the period of the pendulum, that's how these masses, despite of being released at the same time, move at different rates. T= 2pi Square Root( lenght of string/ gravity)
If analyzed with Energy, they all have different Gravitational Potential Energy and therefore, different Kinetic Energy. GPE=KE mgh= 1/2mv^2
Simple concept, yet a mind-blowing !!
Amazing , thank you.
The time for them to complete one "round", is T=2*pi*sqrt(length/9.81), and thus the longer ones take more time to swing... that creates the changing patterns :)
first video i saw of yours, its the one that made me subscribe and im glad i did. happy 200th video!
First time I've been mesmerized in my life!
FABULOUS! I'm blending science and literature with my 5th grade students tomorrow - looking at pendulum patterns and waves, and then into the Pit and the Pendulum - to go with our late October study of Edgar Allen Poe! This is the icing on the pendulum cake of videos! THANKS!
You always have the best soundtracks ever! ♥
Me and a friend were thinking of doing this as a science project for school. Thanks for the video.
That.. Was... AWESOME!!!!! Because of Brusspup I'm starting to acually LIKE science.
@ThreeCheersForBryan - Doesn't matter as long as the lengths are all of equal increments and distance apart. For example, if one string is 18in. then make sure the next is 17, the next is 16, 15, 14, etc. Also each string needs to be the same distance apart.
It CAN be done using just varying lengths of string. The RELATIVE oscillating frequency is all that needs to differ to cause this effect.
Legends say that they are still waving to this day...
If you notice the pattern changes throughout the video... something has to be varied for the patterns to change. If it is simply just to do with the length of the strings then the pattern would remain the same. The frequency of the light is being varied to create the variety of patterns. I know this... I did this experiment during my A-levels.
that was amazing and profoundly moving at the same time. Star
If you don't know why they were released the same time but they started doing waves it's because it's all about how long the string is
Because longer pendulums have longer swing times or periods,so if they all start at the same time, the pendulums will gradually get more and more out of phase and will eventually line up again.
All your films are sooo EPIC!
honestly, what u do is so awesome!
best illusion by brussup yet
I don't think it is about a flickering light at all, rather the time it takes for each pendulum to swing from one side to the other.
Think you need to resit your A-levels my friend. All that's different in each case is the length of the string. The time period of a pendulum is approx. equal to 2pi*sqrt(L/g) where L is the length of the string and g the acceleration due to gravity. Because each one has a different time period, the small differences accumulate over each successive swing of the pendulum. Eventually, two pendulums that were only 0.5secs out of sync are now much further apart and so their relationship changes.
Great! Congrats, it's a nice post!
I've seen an old version, without lights. This one is really impressive...
The other two videos of same subject are very good too.
this works because the wave frequencies of each pendulum meet at the least common multiples. 1:01 and 1:32 are examples.
I watch one video and that's all it takes for a subscription. Damn that was cool.
I liked this video before I even watched it cuz I knew it was going to be amazing.
Watching this after 7 years.. Feeling Nostalgic
Why would 200 people go out of there way in the negative lives to dislike this? I can't understand??
That was amazing! You should make a bigger one with them on fire! Props brusspup!
this illusing is amazing and the music makes it that much better
Cool how they all came back to the same motion at the end. :)
It’s an amazing effect! Is it going round and round or what? Brilliant but I doubt I have the patience to make one!
If you concentrate you can acually control in which direction this vortex thing goes!
Idk if anyone else noticed but the number of sets of waves in this video is exactly 10 if you count them correctly: 1, 3, 2, 3, 1. I wonder if there's a mathematical/physical formula able to explain this?
this is like beats in sound. play two different tones together and they get louder and softer periodically.
The double helix pattern always excited me the most seeing this in my younger days. :)
Thank you for the great video. :)
Got one with a strobe blacklight?
The symmetry is beautiful
Amazing visual effect!!!!!!!! Just Great.
@Steve18282 Its actually called a helix :) DNA refers to deoxyribonucleic-acid which cannot be quantified as singular. The form it takes however, is a helix :) or maybe double helix, i can't remember.
EXCELENTE !!!!!!! :) PODÉS USAR diferentes estilos musicales y diferentes colores-más de un Pendulo ''?
The song is so cool too, man.
@TrinityInfinity54272 Synesthesia is basical when senses are mixxed. so when u see something u could also hear it, seee every letter as a diff color, see sound...i think all combinations are posible
i can see sounds, hear things i see(like when theres no real sound), see feeling (like pain or something like that), see smell
So the patterns that they swing in make have a sound to me (i can slightly feel them too)
THE GREAT AND POWERFUL TRIX- I mean, BRUSSPUP
Clever use of different pendulum lengths! What is the ratio between the shortest and longest one?
a hundred of these would be freakin epic!!
ok bruss... that was just so cool... great music mix too! Emily
I'm almost obsessed with the song to this video! The show was quite spectacular and very fun to watch! Would you mind telling me the artist and song title to this? I'd appreciate it. Thx!
The entire motion like behavior is an illusion. A precise mathematical model of the phenomenon can be Obtained by solving for a dynamical system of 12 Differential equations one for each pendulum. Variation of the pendulum length leads to the discrepancy in the period. By Solving for the position of each pendulum (select an appropriate coordinate to project the position) at an arbitrary time t > 0 , you will get a beautiful description of the motion. Have fun.
I always come back to this video for the music
That's pretty neat can you make an instruct able for the leds you used I have an idea to build on this. Not as a pendulum though.
he didn't use LEDs, it's just white paper on the nuts which get illuminated by black light
LOVE this video...And I am VERY interested in the music track that you used...Who composed it, and who performed it??? Keep up the AWESOME optical illusion stunts....Wow!
I believe the song might be
Break Emotion
The Harmonics are off, the weights have to be in equal increments of units 1" 2" 3" 4" 5" 6" 7"8 "9 " 10" etc. You are doing half quarter or 10th step
@GefroreneSeele
Much thanks man! Wish I had known about this before. Thanks for taking the time to point it out for me:-)
a beautiful merge of math and rt brain.... great job !!!!
That was truly beautiful.
@Hainz34 as you can see it only shows one at 0:35 it begins production 0:43 and 1:00 vuoala!
p.s im 10 years old and malaysian
WOW! That looks just like the thing our teacher showed the class way back in 10th grade physics.
Оо! В темноте-то ещё более эффектно смотрится этот старинный фокус-мокус.
I remember this experiment when I did A Level Physics. The key to understanding this is the frequency of the light source. The light source is basically turning on and off very fast but our eyes see a continuous light. By varying the speed at which the light is turned on and off, you see the pendulum objects in a different position.
loved it! great for my daughters science project.
Great!!! But where is the light that coming out from the bulb you use to shine on those pendulums? Cuz you turn off all light in your room so that violet light is still supposed to be shining right?