Pendulum Waves with Philip Glass

I loved this video of pendulum waves from Harvard and knew immediately that Philip Glass would be the perfect accompaniment.
"The Secret Agent Ending" from the album Glass Reflections by Cello Octet Conjunto Iberico and Elias Arizcuren
"Tuning" from the Spamalot Original Broadway Cast Album
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Check out the original video here: • Pendulum Waves

[@mrd999]

This is awesome. They start moving in a line at 0:27. They finish moving in a line at 1:27. That's a 60 second cycle. Halfway through cycle, at 0:57, it looks like two lines opposing. 1/6 from the middle, at 0:47 and 1:07, it looks like three lines opposing. 1/4 from the middle, at 0:42 and 1:12, it looks like four lines opposing. At 1/12 from the ends, 0:34 and 1:20, it looks like a spiral. Groovy, man.

[@billy_boi]

Mike Decker I found that interesting too

[@DrDeuteron]

aliasing.

[@prudhvivirupaksha4886]

To calculate the lengths of the pendula, start with the longest time period, T. Decide how many cycles of that pendulum you would want before all the pendula are back in phase, usually 12 to 20 cycles. Let us use 16 cycles. This means that the time period (Ta) of the next pendulum needs to be such that it takes 17 cycles to get back in phase with the first, the next will take 18 cycles, the next 19, etc... This leads to the relationships: 16T = 17 Ta, 16T = 18 Tb, and 16T = 19 Tc, etc. To calculate the lengths, form the ratio of time periods as a function of lengths, then solve for the ratio of lengths as a function of time periods. When you are finished this exercise for the student, the result shows that the length you are looking for is the length of the longest pendulum multiplied by the square of the ratio of the time periods squared. For example: La = L (16/17)2, Lb = L (16/18) 2, Lc = L (16/19) 2, etc.... where L is the length of the length of the longest pendulum. When you decide how long you want the longest pendulum to be, the lengths of the others can be calculated easily. (Spreadsheets are great for this!). To build the stand, calculate the difference in lengths for adjacent pendula. Take the difference between adjacent pendula, this will form the steps on the stand so the swinging bobs are at the same level. The method of attachment is up to the builder, but the string supporting each pendulum needs to be pinched to make a definite length. The bob support string is bifilar, or two stringed, one on each side of the bob. The top ends need to be separated by enough distance to assure stability. The ability to make fine adjustments to the length is necessary so the device can come back to line after two or even three cycles. One design for a 20 cm longest pendulum is to cut 5.0 cm long blocks of 1 by 2 pine and sand the sides so they will glue together firmly. I then screw on a 1 cm wide strip of hard board across the bottom so that the edge of the strip lines up with the bottom of the block. The strings to the bobs goes under the strip and is held in place by the screw. Using the difference in length between the adjacent pendulums as the offset, glue the blocks together.

[@ollibon]

Ah, the good ol' days of the internet when you could comment that and not get "🤓" replies. Sure wish this emoji never existed

[@matthewrigby6089]

We need a 1 hour loop of this!

[@somethingtojenga]

Physics really is as beautiful as it gets.

[@emmag.7731]

+pon333villin ikr

[@KC9UDX]

pon33villin And people still claim there's no evidence of its Creator.

[@jojones4685]

+KC9UDX one day someone else will reply to this comment

[@david-joeklotz9558]

BS! A pretty woman is far more beautiful. Ask Schrodinger. He would have laughed at your statement

[@somethingtojenga]

@@KC9UDX How is beauty evidence of anything but our state of mind? This is beautiful because we recognize it... if you took away our brains, none of this would even make any sense... the balls probably all have slightly different temperatures, slightly different surfaces, some of the strings have slightly different tensions--even this system is ultimately chaotic. We see it as beautiful because we overlook its flaws and we desperately seek order to the chaos in order to survive and predict. We are where beauty comes from, not the nature of the thing itself. We can simplify and make a more perfect model of reality called math, so we do. Don't confuse that for a creator.

[@AgnusValdare]

I love how in sync the beat of the song is with the movement of the penudlem.

[@DrDeuteron]

which one?

[@Voltorb1993]

It's just a bunch of pendulums, so, what are you doing, my brain?

[@amalguptan6716]

My guess id that the ones that swing together are integral multples of the time the time period

[@RorekVSpiralWarrior]

The power of the Spiral is everywhere!...

[@FondlesHandles]

this is quite hypnotizing when you have been playing nonstop video games for 48 hours...

[@dooplon5083]

It's hypnotizing no matter what. I mean, just look at those things!

[@unconcernedperson87]

Yeah right

[@dooplon5083]

Concerned Person Your lack of punctuation makes it hard for me to tell if you're agreeing or not..

[@dirkemaus5703]

+Skandranon Banefire opera voice: get a lifffeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee. i should probarbly get a life too im answering on a 3 months old comment..

[@dooplon5083]

Dirk Emaus No one cares if it's three months old, you're allowed to reply to them.

[@ioloindeseo]

wow! I mean just WOW! three times exquisite the reason some cannot appreciate Glass is because they are unquiet in themselves, and could not sit with the waves and tides and feel a greater part of life within themselves for it. What a demonstration. WOW!

[@0karina99]

Amazing! It't like a ballet of the spheres! Truly physics is something like art!

[@sykeassai]

So mind boggoling and yet so simple. I didn't know you could get some of those patterns from that.

[@austrianronin]

so simple and yet so cool !

[@KAPPIEY]

You're a fricking wizard.

[@brightmacsworld8353]

This is really amazing in really just how much the latitude of the pendulums works

[@doorstampyellow]

It's from The Hours Soundtrack. His works can be found at his Philip Glass's site, his first and last name.

[@digitsstuff6521]

It is in the starting position, then goes to the end position, and all the way back to the start before the fade-out. I just now noticed that.

[@danielely2892]

and it taked exactly 60 sec

[@KuroiHato69]

The music with it was perfection!

[@crysknife007]

Wonderful. Beautiful.

[@1DJDeeZe]

What possible reason is there for down thumbing this sweet video? :-(

[@melikai187]

Why do I find this so mesmerizing

[@dr.doppeldecker3832]

The amount of different patterns is incredible!

[@ngDetecter]

you can test it out by focusing on just one ball the entire video and making sure it doesn't "hang" or slow down in any one position, and then do that over and over for each ball. The way these pendulums seem to interact is similar to how different auditorial pitches (notes) seem to interact

[@iolite.]

this is absolutely brilliant. thank you

[@ub3r]

what sorcery is this...

[@matthewparkv5004]

I think physics

[@ecato807]

Wow this thing plays with your eyes

[@blissyp00]

I can just watch this forever

[@kamalagopalu9805]

Best example video for Barton's pendulum's explanation.

[@kamalagopalu9805]

Sorry, i just realized it's not the Barton's pendulum.

[@theblackdahlia88]

Someone should flag this for porn.

[@Oracle13]

LOL!

[@thatinternetteen5616]

Why?

[@theblackdahlia88]

nameless girl Because the perfection is near orgasmic.

[@spicynomad]

;lol

[@juandesant]

Indeed the music goes with it incredibly well… and good intro too ;-)

[@stuffers09]

The formula for finding which distance/repetition rate for each pendulum is 2pi(Gravity/Length)^(.5). With a little number plugging it's not hard to find out the exact distances and weights necessary to complete this project, it's all very possible.

[@cddog1995]

was and still is my favorite composer.

[@doothowell7951]

I could watch that thing for hours dude

[@kaykayboy23]

Haha nice addition of Spam-a-lot in the beginning. Wonderful musical it is.

[@endrankluvsda4loko172]

I feel like this is symbolic of something deep and profound I cant quite grasp.

[@christianfairbanks8531]

We vibe in peace

[@forestbirdgirl]

IMHO ... and yet you can grasp it, you may not be able to put it to words, but you can grasp it with your consciousness, you can feel it...

[@hamletsmill258]

You don't have to say anything, you know.

[@JebusTheHippie]

I could watch this for hours.

[@TheFloridiot]

I just wish this was longer.

[@sumxhi]

Beautifully done!

[@Jaakeup]

Because, back in the old days of KZbin there was 180p, now, they're trying to bring back a lower quality of 240p

[@stefffrr]

I haven't seen this since 2011 i love It🙋🏻‍♀️❤️🤗

[@styleplague]

That's incredible!

[@5472smh]

Love this stuff.

[@Thor_the_Doge]

the Australian/Scottish/British accent is real with this one

[@gblargg]

I like how the swinging motion hits an "apex", then runs everything in reverse back to the beginning.

[@jamescheddar4896]

that's how the entire universe is playing out

[@3Carbon6]

This is the universe observing itself.

[@mariothepookster]

pretty damn cool. so simple and basic ... and visually stunning. bravo!

[@benedwards142]

THAT'S WHAT MAKES IT SO GOD DAMN BEAUTIFUL HAROIDS

[@ThnkIaA]

this makes me want to cry of beauty

[@luckyterra]

This is just the most amazing fucking thing I've seen in a while..

[@santtiagoforttes]

Great combination Glass and the Pendulum! Nice!

[@Ozymandias101]

This deserves1080p

[@jakegilbert9399]

The name you're looking for is Maurice Moss, played by Richard Ayoade.

[@HarmonixHealing]

A Purely Pythagorean Phenomena.... Harmony of the Spheres! Excellent Selection of Music

[@couuf3112]

i think i just got hypnotized by a bunch of balls.

[@tehpeasant]

+Sans the skeleton sounds pretty straight

[@Psijax]

I am utterly mesmerised right now o_O

[@ReadySetGoGaming]

Just absolutely fanfreakingtastic

[@hydra5758]

I heard a version of this video where they made a sound on their own (or it sounded like it). Idk whether that was original but it was wild.

[@jonathanarmstrong484]

So hypnotizing

[@aahanks97]

Someone needs to make a version of this with invisible wires!

[@mike1098]

Love it!

[@OscarTrejo]

Now that would have been trippy as hell

[@zedricxs]

never knew balls can be this amusing

[@KillJoysXx]

This is beyond fascinating

[@crowbrok.o.g.5574]

Weird, if you stare at the furthest ball long enough, the ball closest to the camera turns blue

[@Jmvars]

This basically demonstrated phase cancellation in music

[@galvanrodriguezedgarulises5363]

soy EDGAR GALVAN RODRIGUEZ EDGAR ULISES 2B ESTE VIDEO ES GRANDIOSO YA QUE LA FORMA EN QUE SE MUEVEN ES SORPRENDENTE LA CUAL ME DEJO ASOMBRADO.

[@samuricexful]

Very hypnotic... and for some reason reminds me of SNES RPGs...

[@1888bfs]

heavy balls with different legths of stirng,,who knew? Great video, and lots of fun

[@Gnawrbucks]

@nycjofus I think you did a great job uploading it! Great music choice.

[@amyrickley9321]

Another amazing thing in the world my eyes has discover

[@magnus31415]

Good choice of music!

[@MrSaturdayNightSpecial]

@prudhvi virupaksha OR, you could just do as I instructed them to do. Set the pendulum objects up in a congruent line of decreasing or increasing even scale. IE a 45 degree angle, a 30 Degree angle or which ever angle you like. You can use math but the math just isn't as fun as the game of setting it up and correcting it to get the effect you want with your bare hands.

[@SrNutritivo]

Great!... I'm a great fan of Glass, but I think this would fit betther with music from Phil's buddy Steve Reich... that is because Reich's music uses that principle (composing diferent instruments in different phases, like the balls of that pendulum) as composition technique... Try out a composition like musico for 18 musicians... Anyways, this is amazing!... thanks for share!

[@clementematosdealmeida5094]

Man ... this is related to the diference of period on the pedulum. As you know ( sorry, as you SHOULD know) the period is directly related to the lenght of the strap holding the sphere. That's why they ondulate like that and why the diference between the lenght of the streps close to each other is so minimal ( Sorry for my pour english, azorian over here :)) )

[@fossil98]

Well if you think about it, most songs are going to be in sync with one of the pendulums.

[@EdouardDubois]

@shadeslate The original was a little blurry (at around 480p I think). He edited it and then saved this one in a lossy format (at 360p) resulting in further blur. If you can't see it try putting the image in full screen.

[@enzochoi923]

This is fantastic

[@corvette274]

If you're high, you'll see onions dancing in a weird sort of lined formation.

[@Rufa666]

God be praised! How can you non-believers still denie his existence after such a magnificent display of the laws of physics he created?

[@autumnmcfarland5136]

when it first starts, optical illusion of them swinging in a circle starts. (only if u just stare towards the center)

[@allthingsmode]

@:56 when a pendulums do a better moonwalk than you lol

[@unui_0_0]

日本人手ーあげて🙌

[@user-fz5ly7tb4y]

11451419198104545

[@Kurerappu0906]

はい🙋

[@user-nf4fz5kr6f]

お風呂を嫌がる猫 ( ´ ꒳ ` )ﾉ

[@はっぷ]

ノ

[@emmag.7731]

Wow. Just wow!

[@dars0n]

the cosmic ballet goes on

[@itsrenaduh4188]

Mind blown.

[@L1amo9]

Wow!

[@asherhardy5021]

So dope

[@jasonbodden1600]

Physics is always awesome!

[@mariannebalon2884]

Magnifique moment de grande sensibilité

[@zack9033]

And this was how the universe was formed

[@RondoRory]

It's barely even physics, just practical mathmatics. Every number has a common number that they all divide into (if it's not a infinite number of numbers). Just like 3, 5 and 17 all divide into 255, and that is the point at which they are in line.

[@redstormfighter4863]

My math teacher loved this video so much he made us do an essay on it T_T

[@nycjofus]

RedStormFighter I’m so sorry! 😂

[@liquidange1]

Someone who actually knows their physics would notice that the length for each ball is different. Hide the rest of the balls and watch a single ball for the entire video. You will notice that the pattern of that ball does not change. The patterns occur because the balls are all swinging at different speeds due to their different lengths. This has a really cool effect to the human eye. Individually the balls do absolutely nothing special.

[@Yuniex13]

acid + this video= insane

[@taniadelossantos7937]

It's so pretty I want to cry

[@ngDetecter]

someone is holding a magnet? the "balls" are doing nothing but swinging back and forth, they have different lengths therefore different time periods, and at that angle you see the different patterns emerging

[@Codex7777]

Almost a hundred people have watched this and not like it! Weird...

[@jamesmacleod7407]

Mindblowing

[@runswithscissors1570]

It would be cool if you could soak these in highlighter ink and have a black light on them!

[@lukehanna7440]

Incredible!

[@lupes707]

i can stare at this for hours!