The Truth About Toilet Swirl - Northern Hemisphere

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SYNCHRONIZE WITH DEREK'S VIDEO: bit.ly/Southern...
Both videos on one page (for desktop): bit.ly/ToiletSwirl
Subscribe to Veritasium: bit.ly/Sub2Veri...
TWEET THIS! bit.ly/ToiletSw...
↓↓↓↓↓↓↓More info Below ↓↓↓↓↓↓↓
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Some notes about this.
We each repeated the experiment 3 times, and got the same results every time. For those of you who might be skeptical, great! The good news is that right circularly prismatic kiddie pools are only $10 and you can do the experiment for yourself at your latitude. There's really no reason you shouldn't do this on your own, so before you criticize how we've done it, I'd strongly encourage you to do it for yourself.
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/ veritasium
Gordon McGladdery did all of the sound design for the video. We used two songs from other artists (licensed of course). Derek split the first one up so it fades from video to video, and Gordon split the instruments up on the second one. There are violins on one video and percussion on the other for example. It's really neat.
The neat earth animation at the beginning and the synchronizing timer was made by eisenfeuer.com/. He also made still images of the earth from the top and the bottom.
Thanks to Jacob Vehrs for helping make the plywood pool platform.
GET SMARTER SECTION:
There was a study performed at MIT years ago (web.mit.edu/hml...) that explained the physics involved. We repeated some of these demonstrations, but on opposite sides of the globe…and in a way that can be easily understood.
This site is a great resource on the Coriolis effect and ways people have gotten it wrong:
www.ems.psu.edu...
The Coriolis Effect influences the flight of a bullet.
www-das.uwyo.ed...
We would love for someone to replicate this demonstration. Please tweet your results to us @SmarterEveryDay and @Veritasium.
Here's the link to puchase the exact same pool:
www.amazon.com/...
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Tweet ideas to me @SmarterEveryDay
The thought is it will help educate the world as a whole, and one day generate enough revenue to pay for the kids' education. Until then if you appreciate what you've learned in this video and the effort that went in to it, please SHARE THE VIDEO!
If you REALLY liked it, feel free to pitch a few dollars towards their college fund by clicking here:
bit.ly/KidsCollege
Warm Regards,
Destin

Опубликовано:

28 сен 2024

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Комментарии : 7 тыс.

@TheKingofRandom 9 лет назад

I can appreciate the genius that went into conceptualizing and editing this. Best collaboration I've ever seen. Like!

@anotherluckydad 9 лет назад

So... maybe we could ponder the thought, "space as we know it is a giant kiddie pool being drained by ? and into ?". (thinking that ponder, just made everyone slightly dumber).

@bytesman23 9 лет назад

That was pretty trippy watching the two videos together. Thanks for sharing that.

@sciencestararvinsinghk 9 лет назад

It so cool. I subscribe to u and the makers of the video

@hermanportorreal8409 9 лет назад

Grant Thompson - "The King of Random" heyy whats up grant

@fionameehan133 9 лет назад

0:22

@deanwcampbell 8 лет назад

Dude that video synchronization was one of the coolest things I've seen on the internet in a long time! Thanks guys.

@MozartJunior22 3 года назад

Legend says, Destin was setting up the pool to do his part of the video, but then he punctured it on the side to get laminar flow, thus the 3 year delay on his part

@XavierBetoN 3 года назад

He does that a lot..

@X-Gen-001 5 лет назад

The last time I had my face that close to a toilet, I was being reminded why I should never mix my drinks.

@mulgerbill 5 лет назад

Did you get the same awesome colour swirls?

@X-Gen-001 5 лет назад

@@mulgerbill Indeed I did. It was a veritable technicolor nightmare :)

@maankiimbaad948 5 лет назад

Hahaha no comment, but I like how honest you are.

@ophiolatreia93 5 лет назад

X Gen well a toilet was a stupid place to mix them no wonder you got sick

@omegaseamaster1550 5 лет назад

Yup, drivin the porcelain bus a few times myself. The techno colors where amazing too, from what I could remember

@smartereveryday 9 лет назад

If you're having trouble syncing up the videos here's a pro tip: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-hSK0lm9ZQgA.html

@WillGrace96 9 лет назад

I so wish I could come up with something to collaborate with you on! Love your work!

@MongrelShark 9 лет назад

Or you could just use this double player link. youtubedoubler.com/fFRi

@chuckydickens7258 9 лет назад

SmarterEveryDay Holy Carpcicles! That was some of the best internetting I've seen in months! Loved the video guys, though I couldn't stop shaking my head in disbelief that you did this. It was awesome! Had no issues synching, got it second try.

@carlwitt7950 9 лет назад

SmarterEveryDay Very well done. Bravo to both of you.

@MadnerKami 9 лет назад

SmarterEveryDay That was... awesome. Finally a good reason to have more than one monitor :)

@smartereveryday 9 лет назад

I hope you enjoy trying to figure out how to Synchronize this video with Derek's video. bit.ly/SouthernSwirl We literally spent 3 years planning and executing this. We hope this answers the toilet swirl question once and for all!

@ElNeroDiablo 9 лет назад

SmarterEveryDay I watched this on the site with synchronisation, and it was flipping awesome!

@christianhargreave3758 9 лет назад

SmarterEveryDay I managed and it was great! Thank you so much, it was very interesting and surprising, it wont help me with my physics exam tomorrow, but it was good none the less

@RtCarolina 9 лет назад

SmarterEveryDay That was MIND BLOWING !!! I am in awe... Thank you for making us smile while we think, "Rt"

@Baloth86 9 лет назад

SmarterEveryDay Veritasium Syncing is pretty easy if you own 2 Screens ^^ One Video on the left Screen, one on the right, pause one of them at "1" on the countdown, Start the other Video, wait for the "1" and press play on Video 1 ^^ worked great but if you do something like this again please indicate which Video should be on the left and which should be on the right... Since I watched this Video on the right your Conversation from 6:01 seemed a little weird ^^

@Rickardsson99 9 лет назад

SmarterEveryDay. Just watch one of angels. Real weird. Oh and make this again!

@AndrewMackoul 9 лет назад

I realized at the end that I had the two videos on the wrong side of the screen. THIS WAS VERY COOL!

@lucidexistance1 9 лет назад

Andrew Mackoul Me too, when they said to subscribe to "This guy" and pointed away from each other. (hehe) It was oddly fun to synch up the vids to watch.

@MrEDMeaner 9 лет назад

Andrew Mackoul Seems I got lucky on that point! You will have also missed the cool crossover globe graphic they did ;)

@AndrewMackoul 9 лет назад

Benjamin Davis Yeah, it look weird at first, they should have said which video to go either left or right

@Watermaker 9 лет назад

Andrew Mackoul Same

@jaagup 9 лет назад

Andrew Mackoul I got it all right from the beginning, i was just lucky.

@irudi 5 лет назад

That was the coolest thing ever! The two videos side by side! Genius!

@cillianmurphy8652 3 года назад

🤓

@ZeroHBRPro 9 лет назад

This is so cool! The only problem is that I'll have to write this same comment in Veritasium's video.

@DOMIN8RRR 9 лет назад

ZeroHBR I searched for this comment

@Wintertot 9 лет назад

DOMIN8RRR I FOUND YOU BOTH

@epicgiggles4553 9 лет назад

It's not the same comment because you switched the names.

@veritasium 9 лет назад

ZeroHBR I came and found it here.

@9000fail 9 лет назад

ZeroHBR And I had to like your comment twice

@KevinLambertperfected 9 лет назад

This is one of the coolest experiments on youtube i've ever seen. I love both Derek and Destin, Seeing you guys collaborate to this extent was such a treat. Thank you so much!

@CamonDraconis 9 лет назад

@FrankGutierrezzz 9 лет назад

Did you watch both at the same time? It was kinda weird . Yet, satisfying .

@zuludude2 8 лет назад

133,503 people watched this video without watching the other one :P

@Sh0cKwavE__ 7 лет назад

Alexander Krikorian I'm on mobile

@the44thcosmic_galaxy25 7 лет назад

Ben Hoang you dint need two devices if you look at the time in witch smarter everyday stops talking in one clip watch the video then go to the other channel and you remember the time when you get their you will understand I am on mobile asswell I did it so should you =]

@yofn1541 7 лет назад

not exactly. not all those who watched the other channel's video watched this one as well. not a very logical deduction.

@huonglevan2276 7 лет назад

i watch this one first and didnt notice the sync thing(i usualy skip the first bit of every video so i watched this one twice)

@thecrazeecow1682 8 лет назад

My toilet doen't swirl. It goes "GA WOOOOOOOOSH" like a jet straight down

@thewolfin 6 лет назад

Ah, one of those Dyson Shitblade toilets

@michaellundphotography 6 лет назад

Right?? I don't know why but its funny =)

@befer 5 лет назад

idk why but the fact that i read it like some kind of tribal shaman just makes this comment so much better

@jaysilverheals4445 5 лет назад

nobody is going to believe that

@cseblivestreaming 5 лет назад

you on the north pole? are you santa?

@jordantcochran 3 года назад

This synced video is amazing! Every cut and transition it’s just so smooth and clean that by the time you guys switch the screens in the last few seconds it’s like that was natural already.

@berliandro 8 лет назад

Do you see my comment in the other side?

@jeff74801 8 лет назад

Do you see mine?

@berliandro 8 лет назад

+Jeffery Franklin I do LOL!

@icuXD 8 лет назад

Is mine there?

@berliandro 8 лет назад

+yperz there is lol

@marcorodriguez7748 8 лет назад

what about mine?

@johnpombrio 9 лет назад

The speed of the earth spinning at the equator is 1,600 KPH. A meter is 1/10,000,00 of the distance between the North Pole and the equator. The kiddie pool is 2 meters across. So the difference in speed between the "North" end of the drain and the "South" end of the drain is 2/10,000,000 of about 1,000KPH (due to your latitude). That equals a speed difference between the north point and the south point as twenty centimeters (about 7 inches) PER HOUR. As my analog watch dial is 3cm in diameter, the speed which the hour hand moves around the dial is 10 cm per hour, a rough approximation of the speed of the one of the furthest points from the drain on the pool. The viscosity of water, Brownian motion, and how the drain was made (is it made by the manufacturer to spin?) would completely overwhelm any Coriolis effect that is this small. Even tornadoes are too small to have them spin in any particular direction. Hurricanes are much, much, much larger so the Coriolis effect does indeed make it spin counterclockwise in the Northern Hemisphere. The math first before the experiments begin can show how much trust you can put into the results you see. EDIT: the Wiki article about the Coriolis Effect had an example of a scientific experiment in 1908 that showed a statistically significant result of CCL draining of a 1.8 meter tub of water with initial conditions similar to what was done in this experiment but under "carefully controlled laboratory conditions", it took over 15 minutes before any rotation occurred, it was done many times, and the results averaged (which to me means that sometimes it did NOT go CCL). Was this experiment done under such exacting standards? I donno.

@smartereveryday 9 лет назад

John Pombrio 7 inches per hour? Thanks for doing the math. This checks out. It took about an hour to drain. and the deflection observed was a little less than 7 inches. Awesome! Thanks for convincing me John!

@johnpombrio 9 лет назад

SmarterEveryDay I am not trying to support your experiment, I am debunking it. The Coriolis effect is way too small to affect something as tiny as the wading pool unless all larger effects are removed. Since the water started to swirl (CL or CCL, it does not matter) almost immediately, the water around the drain itself would have moved less than a hundredth of a millimeter per hour east or west during the time that the initial swirl started. yes, tiny variations will cause the swirl to start in one direction or another but the CE is just so tiny. There is NOT ENOUGH SPEED caused by the Coriolis effect to determine the initial direction of the swirl unless all other possible larger effects are ruled out. Once it starts, and as long as the swirl continues in its initial direction, it DOES NOT MATTER what else happens (one hour to empty, two hours, who cares?) Other factors are way more likely to swamp such a microscopic movement. Your apparatus and environment a too crude to think of this as a valid scientific experiment. I can think of several flaws in your experiment. One is that you were lucky and the water spun CCL during your limited number of tries. The most likely one is how you designed the drain. The major problem was simply that your drain was way too large (it takes a lot of time for the tiny movement to affect the water swirl). If you used a flange that was not completely symmetrical (how the hole was drilled out could leave microscopic marks affecting the flow), the flow would be affected (does modern plumbing supplies deliberately swirl the water to aid in draining like they do in toilets?) Another is the bend in the PVC. Water flowing past may have been bent by the Bernoulli principle and sped up on one side, causing the water to swirl in a particular direction. Opening doors going into and out of the unheated garage could cause unwanted eddy currents. UNEVEN cooling of the water in the garage would certainly affect the results (sunshine through the garage doors during the day could do it). Ribs in the bottom of the wading pool may have been added to prevent slipping (are they in a spiral shape ?) or even tiny winkles of the plastic pool bottom and sides. Outside vibrations, air leaks in the garage doors and a subsequent breeze, how level the pool was all could add enough outside influences to get the water to swirl in one direction. Move the entire experiment in a deep cave. Use a huge ultrasmooth and dead flat tub. Create a drain that had its enter hole punched out and machined completely smooth VERTICALLY (rather than in a lathe). Have the water pour out directly onto the floor (no pipes). Add distilled water. Let it set for a month making sure that there are no thermoclines. Then run your experiment a hundred times. You still won't convince me but it will be much better attempt at eliminating other factors. www.scientificamerican.com/article/fact-or-fiction-south-of-equator-tornadoes-spin-in-opposite-direction/

@pinkace 9 лет назад

John Pombrio But... it worked.

@johnpombrio 9 лет назад

pinkace Not enough tries to make it statistically significant. And the setup was designed to prove the CCL spin. There were no other factors except the Coliolis effect mentioned which makes it fail the Baloney Detector Test: www.brainpickings.org/2014/01/03/baloney-detection-kit-carl-sagan/ I still think the drain plug is designed to swirl the water to make it drain faster (like the toilet jets mentioned in the video). I will have to go to Home Depot to see for myself how they design the things. Or perhaps the kiddie pool has a ribbed design (to prevent slipping) that affects the way the water flows. The math does not lie. EDIT never though about how the draining valve causing eddy currents that could affect the spin. Thanks for whoever mentioned this.

@PyroMachinima 9 лет назад

Dibu Elniv What would they know about the correolis effect? Rocketscientists are not even in the same field of science and a doctor isnt even a scientist which goes to show your incompetence.

@hawxonly 9 лет назад

I like that Destin said 1.5 meters in America and Derek said 5 feet in Australia

@rabdownunder6775 8 лет назад

+Steven Wilke What American would no what a meter was? That's to measure voltage or something. Sorry!

@joltedjon 8 лет назад

+Rab Downunder A meter is a distance or whatever fancy thing its called, and I'm American and I know what a meter is.

@whopperlover1772 8 лет назад

+Rab Downunder are you joking?

@i26C 7 лет назад

Destin's a rocket scientist. AKA doesn't use imperial bullshit

@cringelittleboyindenial3195 7 лет назад

lol

@Straza_Weeks 5 лет назад

WTF Its 2019 and I am only just watching this now!! my mind is blown. that was the best thing I have watched in years! thank God for two monitors. Off to Veritasium's page to post the same!! Im in the southern hemisphere!

@hugoa.c.1566 5 лет назад

Straz Weeks same here

@bigbirb5233 8 лет назад

This Collaboration With 2 Monitors Were Amazing

@daveelbarbaro3313 7 лет назад

I'm telling you, it is

@GpD79 8 лет назад

Wow... great collaboration guys. What's more impressive than this video? The fact that i got this video literally perfectly synced on the first try!!!!!

@josiahpait5286 8 лет назад

True

@firestar1056 8 лет назад

dude you should have posted the same comment at the other vid at the same time you posted this comment!

@MaxBestawesome 8 лет назад

I saw ur post on the other vid exact same:)

@GpD79 8 лет назад

+Max Best :-)

@viperrayne3020 8 лет назад

same hehe

@sonicclang 3 года назад

I can't believe I'm just seeing this now. This is the coolest set of RU-vid videos I've ever seen. Not only is the subject matter super geeky and right up my alley, but the execution of the synchronization is incredible! Well done.

@BamaFanEdge 9 лет назад

Did anybody catch the metric joke? Destin has a 1 meter kiddie pool and Derek has a 5 foot kiddie pool.

@BamaFanEdge 9 лет назад

RU-vid's comment system is weird. I can't see any comments related to this. I think they show comments in a different order to different users.

@kasperbennetsen6302 7 лет назад

1,5

@Oogabooga- 9 лет назад

I got the music synced up perfectly.

@eduardochavez82 9 лет назад

FU I tried for like 5 min but my phone sucks

@NotMuchu 9 лет назад

1st try lol

@somhairlemacdonlad7284 9 лет назад

Eduardo Chavez how were you planning on doing it with a phone

@ryukdluffy 9 лет назад

Seth Ross same. Both videos started at 0.19 seconds.

@dankydrankH20 9 лет назад

Somhairle MacDonlad one phone, one computer. Just like in the video...

@Acorn_Anomaly 4 года назад

Honestly, the most amazing part of this set of videos(to me) was the score editing. The music playing on both videos as you give your explanation sounds complete on both, but when you play both together, it sounds like one composition. It's amazing!

@justgiz 9 лет назад

Having dual monitors made this dual-video idea was amazing. And having it synced made it awesome. Thankfully I had SmarterEveryDay on the left and Veritasium on the right, so that outro was amazingly (is that a word?) kool

@joejoe4games 9 лет назад

***** Same here, but i hade them on the wrong screen... :-(

@steevf 9 лет назад

***** Same here!! Dual monitors on full-screen HD made it even better.

@locohombre79 9 лет назад

Nice! I just had an iPad and iPhone, which worked fine, but you're setup must've been an awesome viewing experience!!

@justgiz 9 лет назад

locohombre79 It was, here is a pic twitter.com/justgiz/status/606131408587726850

@RobKinneySouthpaw 9 лет назад

***** I think the number of people correctly "guessing" which one to put left and right has less to do with random guessing and more to do with their setup. In both videos Destin's on the left and Derek's on the right, and they keep pointing in the appropriate direction when they mention the other guy's channel. I think they subliminally told everyone which side to put it on with good planning.

@GreywardenRimu 9 лет назад

i liked the idea of syncing the two videos, this is one of the coolest videos i've ever watch :D

@jawindyu89 5 лет назад

this was actually the best video(s) ever, and amen to the guy who said ''THEY SAID 2 MONITORS WAS A WASTE OF MONEY!''

@fisheroldham7707 4 года назад

I am on mobile so I couldn’t see it

@squidwardo7074 3 года назад

i mean you can watch both at the same time using the splitscreen feature in windows

@QuilloManar 9 лет назад

Why does SmarterEveryDay's video...

@MrYosinof 9 лет назад

+Quillo Manar Because SmarterEveryDay ...

@QuilloManar 9 лет назад

Josias D. Rodriguez But both of these videos are designed to be watched...

@farn0153 8 лет назад

Yeah, but he...

@dirigibility 8 лет назад

Probably because RU-vid...

@mannyt814 8 лет назад

+Quillo Manar nice uncut...

@scottvarley3823 3 года назад

I’ve had Veritasium’s video sitting at the top of my watch later list for about 5 years. Today I was floating around on RU-vid trying to decide what to watch, and I looked at this video, saw my phone, and I decided today was the day (finally). The video was amazing! (Commenting on the other video too) (I’m already subscribed to both)

@jr52990 9 лет назад

I didn't realize I had the videos on the wrong side (r to L) untill the end of the video. haha But gosh was this incredible.

@SeanSemanko 9 лет назад

***** Same!

@samo5566 9 лет назад

***** *insert comment about how i did the same thing here*

@SeanSemanko 9 лет назад

Hackeye lol, it's OK. :)

@groovylobster 9 лет назад

and finish writing the comment on this one?

@Bentherabbit34 9 лет назад

The fact that the end on your comment is on the left video

@qminer3 9 лет назад

groovylobster yes I think it does.

@BigLeprichaun 9 лет назад

groovylobster Yes, I do believe it does.

@BigLeprichaun 9 лет назад

groovylobster Yes, I do believe it does.

@4560123678 9 лет назад

BenTheRabbit He should've thought about that...

@jonm3024 3 года назад

Thank you! So tired of people incorrectly telling me what direction my toilet flushes and then acting like they know better than me when i tell them they are wrong... I live in southern hemisphere btw...

@gdean187 9 лет назад

The syncing of the two videos was pretty cool. Never seen anybody do that before.

@karlpelletier3440 3 года назад

Unbelievable! This is the best execution of a RU-vid based experiment I've ever seen! Way to go guys, this is going down in the hall of RU-vid fame.

@Nodularguy1 9 лет назад

I think they broke the internet

@nayhem 9 лет назад

and left it to us to fix

@Boryspitzanzx 9 лет назад

who else continued to watch both videos even after the sync was over???? chaos was it XD

@Boryspitzanzx 9 лет назад

Boryspitzanzx and here

@nayhem 9 лет назад

Boryspitzanzx They still kind of hit the same topics around the same time. Was hoping for a *psych!* moment.

@AlexHeisEngholm 9 лет назад

Maybe it best to play the videos on two different devices...

@CNETHome 9 лет назад

One of the greatest videos I've ever watched. Thank you for this!!

@i3e5l4 9 лет назад

RizKnows Two* of the greatest videos you've ever watched, technically. ; )

@InUterusLimbo 6 лет назад

moron

@dolfomachado12 5 лет назад

This was just unbelievable! I'm so proud of being a subscriber on both channels! Thank you Destin & Derek!

@applepine1048 6 месяцев назад

LOL

@MakeSomething 9 лет назад

I never use this word but this collab was EPIC!

@Kairinkai 4 года назад

lol

@kaylaempson5788 8 лет назад

His face is so close to the toilet bowl that it is making me uncomfortable haha

@demef758 5 лет назад

It's always amused me how guys can stick their faces in toilets and sewers when they need mechanical attention and the girls gag. Then the girls happily stick their faces in a babies soiled diapers and the guys gag. What's wrong with this picture?

@exopxo5691 5 лет назад

at 1:34 GOT HIS A TOILET WATER SPLASH UP HIS FACE

@WeTubule 5 лет назад

You don't have to be close to get "toilet plume" on your face.

@kelrune 4 года назад

ok i know this is almost 5 years later. and i am just now seeing this. i loved this. It took me 7 tries to sync the video to be off by no more than about .5 seconds but i did it. Great work you two

@iiiSidewalks 8 лет назад

this with dual monitors was amazing.

@hwmmc4405 8 лет назад

+libaconil Seriously, this was really fun to watch this way.

@Braxan1337 9 лет назад

This video was so freaking cool! RU-vid should add a feature which allows you to sync videos to promote cool stuff like this! The music was so perfect too! It didn't sound weird even if you synced it a second or two too late!

@smartereveryday 9 лет назад

Elias Lundberg Watch it again!

@Braxan1337 9 лет назад

SmarterEveryDay I've already watched a thousand times! :D

@fearlessdigitaljourney 5 лет назад

Holy cow! BEST VIDEO EVER! This takes youtube to a whole new level. Having two monitors makes this experience truly mind-bending. Thank you Destin and Derek for masterminding this video sync!

@Draktand01 9 лет назад

What happenes if you try this in the equator?

@FTWGamerTrue 9 лет назад

Draktand01 Might as well divide by zero and exceed light speed.

@veritasium 9 лет назад

Draktand01 FTWGamer No swirl!

@st_us 9 лет назад

Veritasium prove it!

@FTWGamerTrue 9 лет назад

Veritasium It isn't perfectly across just the equator. My comment was truth.

@abraker 9 лет назад

Draktand01 I ask the same about hurricanes.

@teunissenstefan 9 лет назад

What if I told you that I put this video on the right, and I found out after the videos that this was supposed to be on the left side? lol Good work guys!

@Racecar564 9 лет назад

Stefan Teunissen The same exact thing happened to me.

@teunissenstefan 9 лет назад

Racecar564 rip us

@VikingPickles 9 лет назад

+Stefan Teunissen me too :(

@nuetral1zm 9 лет назад

+Stefan Teunissen I did the same thing ahaha

@SmartDufus 7 лет назад

what if a hurricane were to travel over the equator..

@irishdc9523 7 лет назад

Panvdlen would it have two eyes?

@callummckie894 7 лет назад

That's why hurricanes in the tropics and close to the equator are so much more dangerous - they don't know which way to go.

@timmallette1888 7 лет назад

They can't-never have.

@caelanreeves9760 7 лет назад

Panvdlen inception

@PapiJack 7 лет назад

Not sure... maybe that's why they naturally get pushed one way or another.

@JohnWilson-dx8jk 4 года назад

Ok, I’ve known about the corealis effect for some time but I do have a serious question. A sink draining or a hurricane swirling goes counter clockwise in the northern hemisphere and clockwise in the Southern Hemisphere. What would happen if we did this experiment ON the equator?

@isaacpatman5255 4 года назад

there isn't enough angular momentum for hurricanes or cyclones to form on the equator exactly so I presume it would be most likely chance, "Cyclones can't ever cross the equator. They occur mainly between 10 and 20 degrees north or south of the equator and are the product of tropical low pressure systems over warm water "

@nellyfarnsworth7381 4 года назад

On the exact equator line, water does NOT SWIRL. WATER GOES STRAIGHT DOWN.

@asyouwish9567 4 года назад

@@isaacpatman5255 There isn't enough angular momentum in a 4 foot pool either.

@asyouwish9567 4 года назад

@@nellyfarnsworth7381 No it really doesn't . It swirls like everywhere else.

@nellyfarnsworth7381 4 года назад

@@asyouwish9567 So sorry you WONG. I am salesman, travel much. Go to Equator line. Water No SWIRL, go straight down. People know this for thousands of years, before us.

@ThugMuffinification 9 лет назад

Watching both videos at the same time was so cool! Never seen two videos synced like that before, I can only imagine the time it took to get it perfect like that. You guys are both amazing, so glad I'm subscribed to you both! The best of the best right here! 👍👏😆

@Nieumarlamalpa 9 лет назад

Having 2 monitors and syncing it nearly perfectly, it was an amazing! Even guessed which vid is the right and which is the left! 10/10 wold watch again! :D

@Thevisualdude 9 лет назад

wow synced perfectly...amazing idea guys

@smartereveryday 9 лет назад

TervellLive I give Derek credit for the idea!!

@Thevisualdude 9 лет назад

You guys both were awesome!!...

@DumbfoundedMadman 4 года назад

Yeah, I'm 5 years late to the party, but I still felt the need to express my opinion on the fact that this was an awesome collaboration video and I'm glad it exists in the world.

@MrKuemmelbrot 9 лет назад

what are the chances I watched the simpsons episode where they are in australia and check the toilet-rotation-thingy and have a machine that makes it spin the same as in America ^^ TODAY! and I don't even like the simpsons.

@smartereveryday 9 лет назад

That One Guy No way.

@fatihduran2110 9 лет назад

That One Guy There is 7 billion people on earth, there will always be that one guy that will do it, no matter what it is.

@MrKuemmelbrot 9 лет назад

Fatih Duran Guess you could say.... I'm "That One Guy" (•_•) / ( •_•)>⌐■-■ / (⌐■_■) YYEEAAHH!

@fatihduran2110 9 лет назад

(Pun Intended)

@1878jayefc 9 лет назад

Me to! I have liturally just watched it

@Huntracony 9 лет назад

So, who did the editing?

@smartereveryday 9 лет назад

Huntracony We both did. It took us 2 weeks. Gordon McGladdery split the music. Some instruments on one video, some on the other!

@Huntracony 9 лет назад

SmarterEveryDay Where you two in a skype call while editing? I can't imagine how much work it'd be otherwise. Also, the splitting of the music is a nice touch, but a lot of people (including me) probably didn't get it synced perfectly.

@AlmightyMatthew 9 лет назад

SmarterEveryDay The editing was done perfect I honestly couldn't tell I was watching 2 videos. There is one thing that I wish would have been done otherwise ... Derek should have uploaded the video first so his video would appear bellow yours in the subscription box.

@ConstantlyDamaged 9 лет назад

SmarterEveryDay Heh, you could have tried some sound-wave interference too, where two sound tracks collide and cause a completely different audio to be heard. Have seen this done in some music (an example is NIN - The Great Destroyer, where if you mix left and right into mono, there is an extra lyric in the song), and if the syncing is done just right, could work.

@umbrellahole 9 лет назад

Huntracony Only someone on the equator can do the editing, because they are the ones that can sync the two videos because their drains drain flat! Muahahaha

@canpusa655 5 лет назад

You only did the pool thing once... So it's 50% chance coriolis is real, and 50% chance it just randomly happened to swirl the way you expected it to swirl... Build the pool again from scratch a dozen times or so and only then claim you have proven coriolis... Provided it swirls the same way every time.

@no-face2436 5 лет назад

Not once, not twice, thrice times he tried it.

@thiago1385 8 месяцев назад

Hi, 8 years later my wife asked me about this effect bc of an x files episode, now I showed her this (both, simultaneously) videos What a journey I had with you guys in those almost 10 years... Love you guys! Ty for all!

@NickSheridanVids 9 лет назад

Is the threading of the plughole and the direction in which the pipe flows the water not a variable?

@wol377 9 лет назад

VidSheridan Yep... there's lots of variables not taken into account here. During the time lapse you can see a lot of movement on the surface of the water in the garage due to air currents. The side of the pool nearest the windows would be a different temperature than the other side causing thermal currents in the pool (vertical, yes, but the sides of the pool are not perfectly vertical so you get horizontal currents also) As small as these external factors may seem, they still outweigh the Coriolis effect. Consistent bias leading to consistent results.

@NickSheridanVids 9 лет назад

Indeed. I'd be curious if the result had been negative, how would Destin and Vertiasium package have packaged it.. Would we get a "the coriolis effect isn't real!" or "the coriolis effect is inconclusive" or just scrap the whole project.

@wol377 9 лет назад

VidSheridan The question isn't whether the effect is real, it's whether or not it's observable at these scales. The maths show the effect is extremely small at these scales and negligible when compared with resting water currents unless extreme measures are taken. That being said, if they had swapped pools, draining mechanisms and did it in a few other locations I would be more willing to believe this was the Coriolis effect in action.

@NickSheridanVids 9 лет назад

Excellent point, I'd forgotten about the application to larger systems such as weather etc. Maybe they just needed two much much bigger paddling pools ;)

@swng314 9 лет назад

wol377 They said they bought the same pool. Do the random variations during the manufacturing process affect the draining system that much?

@ToniT800 9 лет назад

Very cool idea. But I am not impressed. It could be just a coincidence. You had to repeat this experiment at least 4 times, because the probability for the "right" outcome was 25% percent, and it is pretty high.

@Fletacarling 9 лет назад

They did the experiment 3 times it says so on verittaseum

@simoputtonen2799 9 лет назад

Check description. They did the experiment 3 times

@ToniT800 9 лет назад

Simo Puttonen ok, i just never read the description:)

@nosef7703 9 лет назад

Toni T800 you're*

@simoputtonen2799 9 лет назад

No sef What?

@Marcotonio 3 года назад

This video has around 500.000 more views than the other one. YOU HAD ONE JOB, PEOPLE!

@ET2carbon 4 года назад

There was actual beauty in this experiment. The world connected. I watched it first by itself and didn't make sense. With the sync oh my God insane! You did fantastic work here. Thank you for this excellent work.

@JamesBartholomewMusic 9 лет назад

This is awesome!

@PloxCleveringa 9 лет назад

I just posted this comment on the other video

@ravihammond 9 лет назад

+Plox “the” Cleveringa I replied to this comment on the other video

@VenseyNess 8 лет назад

+Plox “CirclesMaster” Cleveringa I'm making a note here, huge success. Aperture science! For the good of all of us, But there's no sense crying over every mistake. Then the science gets done, for the people who are I'm not even angry Even though you And tore me to pieces. As they burned it hurt becasue, And now these points of data And we're out of beta So I'm glad I got burned For the people who are Go ahead and leave me. Maybe you'll find someone else to help you. That was a joke, haha, fat chance. It's so delicious and moist. When there's science to do! Glad I'm not you! And there's research to be done, Still Alive! Still Alive! Still Alive! Still Alive! Still

@Abirahh 8 лет назад

I replied to that on the other video

@PeterAbt 8 лет назад

+Plox „CirclesMaster“ Cleveringa you lied at least once! xD

@PloxCleveringa 8 лет назад

Peter Nope.

@Xilibrius 8 месяцев назад

Just found these videos randomly when creating a puzzle for pathfinder and this is so cool how they sync up. great job!

@edancoll3250 9 лет назад

Awesome video, Derin!

@InterrobangActivate 9 лет назад

Do you mean Derk from Veristablium?

@TasX 9 лет назад

@kenea3226 5 лет назад

I wonder how the flat earthers feel about this/these videos?

@Kmcornell23 5 лет назад

Well obviously it wouldn't be possible because the earth is flat. lol.

@IAMSTEVIERAYBITCH 5 лет назад

Well anybody should question what really is going on here. If you believe in the Coriolis effect as Dustin is trying to make you believe then you must believe the Earth rotates underneath hot air balloons,planes, helicopters and drones that does not happen in real life now does it. Therefore Coriolis effect it's not the way Dustin thinks it is. I do not deny the Coriolis effect I deny it in the aspect Dustin is trying to portray it.

@flatstuff1630 5 лет назад

Flat Earther here. We feel that if you can't understand toilet/sink/drain swirl, but are willing to hang all your beliefs and your image of the world on it based on what a video made by a cracked out nutcase says... Then you just might be a hopeless globetard.

@CaptainGibbons 5 лет назад

@@flatstuff1630 I can tell you're really a flat earther because you didn't answer the question with anything but ad hominem lol.

@flatstuff1630 5 лет назад

@@CaptainGibbons not gonna repeat what 1000s of others have already said. Ignorance of the truth is no excuse for not looking for it. Which clearly you haven't. Grow up

@jonathantrak3322 3 года назад

There should have been no question about the results because as you BOTH mention, in sync on both videos, that hurricanes rotate in different directions on opposite sides of the equator. Additionally, the sky spins in the opposite direction AND the moon phases are opposite as well. Nonetheless, as all great scientists throughout history, you put your money where your brain is and demonstrated to the world, there REALLY is a difference. GREAT JOB and VERY CREATIVE!

@EvertBorghgraef 9 лет назад

Ok Destin, awesome video, BUT: I had the Veritasium video on the left, and yours on the right, which in the beginning made sense, as it looked like you walked from his screen to yours. In the end though, it was all swapped around! Those are some continuity errors Destin, don't let me catch you on one again.

@smartereveryday 9 лет назад

Evert Borghgraef Rewatch it!

@veritasium 9 лет назад

Evert Borghgraef Listen to SmarterEveryDay

@soccerguy2433 9 лет назад

Evert Borghgraef it works with SME on the left, Veritasium on the right

@EvertBorghgraef 9 лет назад

SmarterEveryDay Veritasium I figure I'll watch it again then! I loved this one by the way, are there more collaborations following?

@wozzle68 5 лет назад

Wow! I was a bit late to the party, but what a cool collaboration. Thanks for the effort guys. :)

@stonerbland7621 3 года назад

This was SO COOL you guys are UNREAL for doing this I've been a fan of veritasium for years I can't believe I never saw this

@lolscience1979 5 лет назад

Who was subscribed to both before this video?

@roostewrum 8 лет назад

Dirk of Verstablium

@dkrepich 3 года назад

Awesome video and collaboration! If i remember correctly it was Mr. Wizard that taught me about this first. He did his experiment with a draining bucket and a merry-go-round.

@SPACKlick 8 лет назад

I had these videos side by side, the wrong way round for this end bit, I was very confused.

@amdenis 6 лет назад

LOVE your experiments and how well you do everything, with so much care and attention to detail HOWEVER, this was not at all definitive, nor good experimental validation. For it to be definitive, you need to repeat that experiment multiple times (let's say 10 times or whatever x-sigma level would be appropriate), to ensure that it wasn't random. Doing this once at a given location and observing it going one way or another means nothing definitive, because it has to go one way or another even if it was random. To determine this even more definitively, you should do it at several latitudes on both sides of the equator, measuring rates of rotation as a function of time.

@flyingsodwai1382 Год назад

I was thinking the exact same thing. I had 20 times in my mind though. Even the tiniest perturbation can affect final outcomes here. We saw how the sunlight caused some convection currents right in the video.

@rebeccaexplorer5969 4 месяца назад

Oh my goodness this was the best experience on youtube hahahaha. Please do this again, Destin! That was so fun! 10/10: Would recommend.

@miguelcabral9463 4 года назад

I watched each video one at a time and it was the most awkward thing I’ve ever experienced

@christopherbelmonte5145 3 года назад

THIS WAS NUTS!!!!!! coolest thing ive ever seen on youtube, even 6 years later

@BlueBetaPro 9 лет назад

This was Awesome. (This is a twin comment)

@dogztooth 9 лет назад

BlueBetaPro BlueBetaPro i am replying to both the same

@DaRkLoRdZoRc 9 лет назад

BlueBetaPro Sup.

@untitledname5183 9 лет назад

dogztooth xD

@NayroTheAdventurer 9 лет назад

Shaibah That double vision gets the best of me

@Kaalemet 9 лет назад

This was a very cool video.

@xorinzor 5 лет назад

this was so cool haha, loved the creativity!

@billintulsa 3 года назад

I am just now finding this video, and I indeed synched it up with Derek's. I have never seen an online demonstration like this, and the results are incredible. Well done.

@daniricard1 8 лет назад

this has been disproven, the direction depends on the nature of the drain itself.

@TurkeyMeat 8 лет назад

+Danielle Ricard They used exactly the same pool though, so the drain is theoretically the same...

@funknjam 6 лет назад

Your point is well taken. Veritasium pulls a plug to drain. Smarter Every Day turns a valve to drain. The dropping of the food coloring was inconsistent (and ultimately unnecessary). Doing real science requires controlling every variable possible and there were many here that were obviously not controlled which gives one reason to call the entire "experiment" into question. To see the CE arising from Earth's rotation, one would need to see an appreciable latitudinal speed difference from one side of the system to the other. That's non-existent at the scale of less than 2m. Beyond experimental design, the explanation of hurricanes is either grossly oversimplified to the point of being incorrect or just incorrect. I recommend anyone interested read up on cyclonic circulation. The rotation of a cyclone stems indirectly from the CE, not directly from it.

@mindyaguliar9346 6 лет назад

Danielle Ricard ...im pretty sure they mentioned this.

@mb4lunch 6 лет назад

Precisely.

@TheImbord212 8 лет назад

Comment in the Northern Channel (The other comment is on the Southern channel)

@p9rk 3 года назад

Thanks man now i cant stop thinking about how my toilet flushes

@j.bivens8127 2 года назад

Coming atchya from 2021...and this was flippin' AWESOME! You should absolutely do more like this!

@johndaltondiscgolf7870 5 лет назад

So do you live around Huntsville? If so I need help with my senior design project at UAH 😂

@bradleyorozco1081 4 года назад

So howd you get

@aryamaansingh1894 7 лет назад

Put this video on left...

@nanamacapagal8342 4 года назад

You know what would have been clever? If Derek and Destin made it so that this video goes above the southern one.

@spiffyvidz5898 5 лет назад

This just actually blew my mind, I did believe about the clockwise and counterclockwise swirl , but I never thought about the earth spinning! I love you destin!!

@JackSwatman 9 лет назад

What happens when a hurricane crosses the equator? Does it weaken?

@JohnMichaelson 9 лет назад

JackSwatman They never do, so it's never been seen. Presumably it'd have enough momentum to last a while but would weaken.

@JackSwatman 9 лет назад

I did some reading, hurricanes are generally forced North/south west so never cross the equator, if they did the rotation would be countered by the opposing Coriolis effect slowing the hurricane's rotation down Also hurricanes don't form near the equator duo to very small Coriolis effect around the equator. So those videos of guys with the sticks in bowls either side of the equator are BS

@2F2FSkyline 9 лет назад

JackSwatman I actually asked Google, "Can hurricanes cross the equator?" and the answer is no. The Coriolis Force is near zero near it. I've read some other suggestions and one of them states that a tropical storm can originate near the equator, but would travel away from it.

@grampton 9 лет назад

Yes, it will weaken the hurricane, because of the Coriolis effect, then the hurricane will slow down and spin in opposite direction, which would take time to have enough force to be destructive again.

@tbmavenger71 9 лет назад

The inter tropical convergence zone stops them, because there is no wind. Sorry if someone said this, I didn't read the thread.

@ville7213 9 лет назад

Wait, are you making me move 4 meters (13 feet) to get my phone... What if I fall and die. There is like a 1 in 99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999 chance of that hap...

@RummyLPs 9 лет назад

Dat Ty He didnt end his sentence. He must have fallen and died!

@puglover3162 9 лет назад

R.I.P.

@WarpFactor999 3 года назад

This is also how rate integrating gyros can detect true north (with an inclinometer). This is used in down hole surveys in oil wells without an external reference.

@tommykarrick9130 8 лет назад

...video to comment on

@frinky 8 лет назад

here in my garage

@mavisv6010 5 лет назад

DiggleBiggle KNOWLEDGE

@EliKennedy 3 года назад

Oh that synchronisation was super cool!

@griplimit261 7 лет назад

I have a huge problem with this experiment. by not using the scientific method of multiple testing. they need a repeated result under the same conditions to make excepted as fact. I like his channel and the use of scientific study and deduction in most of his videos but this one was like psudo science.

@sbaromski 7 лет назад

Well, considering that this experiment has already been conducted, with same results, many times over history, I think that requirement is satisfied...

@griplimit261 7 лет назад

Did everyone use a kiddie pool using the same drain system at the same latitude to repeat results? All I'm saying is for this video they could have done it a few more times considering how minute the vortex was.

@AULO2905 7 лет назад

Grip Limit read the description.. it says they did it three times

@griplimit261 7 лет назад

Aulo 2905 oh, that's good at least. I did the experiment in my sink 10 times and got different results each time.

@griplimit261 7 лет назад

Scott Baromski yeah of course I watched it. do you also believe you weigh less on the equator than on the poles. I did more research on the matter than just getting two peoples OPINION on RU-vid.

@kjfield43 6 лет назад

By this theory, there should be no swirl at the equator. Has anyone experimented at that location?

@UncleArvideAbernathy 5 лет назад

Yes and yes; there is no swirl. I have lived in New Zealand and In the UK. It definitely goes in opposite directions, consistently. Weird when you first see it for real!

@clownshoesmma6249 5 лет назад

What if a hurricane crosses from the northern hemisphere to the southern? 🤔

@keyemaster 5 лет назад

@@clownshoesmma6249 That can't happen.

@nandkishor6485 4 года назад

Fun facts : Even after 5 years both videos have almost same number of likes & comments and also same people in top comments, even in replies with same number of likes on comments

@BDT17 9 лет назад

I commented on that video ----->

@1tallpaul3 3 года назад

This is one of the coolest things I've seen on youtube. I was able to perfectly synchronize them the first try. lol

@zvxcvxcz 8 лет назад

While this is certainly true, I'm not sure that this experiment would be convincing enough on it's own. Should show multiple trials and different pool geometry, etc.... if the burden of the original proof were on your experiments so that it's clear for everyone that it wasn't just chance. P.S. I was already subscribed to Veritasium and your channel ^_^

@nigeliloilo4398 6 лет назад

You already missed the point if you talk about pool geometry. Water flowing down the hole on a spinning earth is what causes the rotation. The hole should be round and uniform so no external influences damage the experiment. Sure if a flat earther designed a special container and fluted hole to reverse the spin by having more that the natural effect. Then it would go the wrong way. But that's the lying and cheating they always have to do.

@larryjohnson150 5 лет назад

It is so cool to have one video running on my tablet in the minimized view with the other playing my phone in full screen directly underneath it so they are one top of the other. Awesome videos!