This river can be switched on and off

Surely water simulation can be done with computers now? Well, not quite. At the University of Sherbrooke, there's an artificial research river, and I asked them to start it up. ▪ The University's civil engineering department: www.usherbrooke.ca/gcivil/
Edited by Michelle Martin / mrsmmartin
With thanks to Sherbrooke team members Basem (who also flew the drone!) and André (who also wrote the French subtitles!)
🟥 MORE FROM TOM: www.tomscott.com/
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[@TomScottGo]

I did try to find a cultural equivalent to my Crystal Maze reference for the French-Canadian subtitles, but sadly "turning the tiger's head" didn't quite fit...

[@dangerman1238]

Sup

[@Gnomenamedgrimblegrumble]

Love the thumbnail

[@ethanhodge3611]

Hello

[@fritzneuer4347]

ok

[@ARK613]

They should have just used the shortest river in the world. 😁

[@demonschnauzer1555]

I don’t know why but seeing ducks still swimming along on the simulated river made me happy.

[@karnerkreativ]

Sorry but they are actually just simulated ducks.

[@Westerstaad]

@@karnerkreativ NO

[@brlisong]

@@karnerkreativ Birds aren't Real !!

[@CitizenSnips69]

Having non simulated ducks on the river is an interesting idea, but I don’t think I would advise it.

[@dees3179]

So pleased I actually understood a reference!

[@DoctorSwagatron]

Tom Scott is like a National Geographic host for non-natural phenomenon.

[@user-vs9ds3dc2y]

Oddly enough 😂

[@heartycoffee4754]

@roll and tom doesn’t put in work in his videos?

[@1ntel]

@roll geek

[@Bric_workshop]

@@heartycoffee4754 ikr 🤷🤷

[@58209]

@roll Disrespectful considering the amount of work tom scott puts into his videos

[@andrerenault]

Tom, thank you so much for coming to Sherbrooke and filming our river! We're hoping to get some preliminary research published in 2023, if all goes well. (Oh, and with regards to floating on a tube: We've talked about floating down on one of those massive inflatable unicorns, but unfortunately we have sticks of rebar in the river to attach probes to, and that wouldn't end well...)

[@kelseyduerksen6404]

So cool that Tom was/is in Sherbrooke! I live close to here :)

[@paddington1670]

Thank you for sharing your brook with Tom and the rest of us.

[@mdrzn]

That was extremely interesting!

[@mull4584]

Why are some of the rocks painted blue?

[@weiiswurst]

@@mull4584 to see where the paint chips off or to identify them at a later day (see how much they move)

[@psgamer-il2pt]

Can we talk about how Tom has gotten so powerful that he can just switch on a river by saying turn it on boys

[@LeCharles07]

He's approaching robber baron levels of power. :O

[@MonkeyJedi99]

By Bastille Day next year, he'll say, "Let there be light" and there will be light.

[@SeanNicholsEh]

And on the third day, Tom said: "Let there be water!" And lo, there was water. And it was good.

[@vigilantcosmicpenguin8721]

He can restart the universe.

[@rebelli65]

Can he build an apple pie from scratch tho

[@WlatPziupp]

0:41 "Pick out specific variables and play with them" That's how you know for absolute certain that this guy's a legit scientist

[@MonkeyJedi99]

Plus, it's a good bet he writes things down. You know, to comply with the Savage rule of science versus fooling around.

[@crackwitz]

because of the play drive, not because he said "specific variables"

[@periodicstudio2390]

@MonkeyJedi99 beat me to it, but to quote Adam Savage: “The difference between screwing around and science is writing it down.”

[@Florkl]

The most polite and Canadian way to say, “No, our river is not a joyride for inflatables.”

[@juliaf_]

Given that this is at a Quebec university, it's surprisingly polite ;)

[@fwizzybee42]

Honestly shocked a grad student has never done it…kind of shtuff they get up to all the time. Then again maybe they did but kept it from their supervisors.

[@_Dimon_]

@@fwizzybee42 They did it, i'm sure, they just don't want to admit it on camera.

[@markwright3161]

@@FlashGamer521 All you have to do is take a crash test dummy and an inflatable tube there yourself, with yourself and the goods disguised as a couple of ducks of course, wait for them to turn it on and off you go. If you can follow the dummy down to film on the back of an inflatable duck, it would be perfect :)

[@dameanebulia]

I'm French and fluent in English but the subtitles in my native language are warmly welcome and additionally seems very accurate ! Really appreciate the amount of work you and your team put in each of your videos

[@lxdixd]

IMO all channels that consistently get 2M+ views per video should have manual captions on their videos.. it’s so helpful with so many benefits!

[@tcg1_qc]

I'm from Quebec and also fluent in English, I never use subtitles unless I really can't understand due to an accent or the way a word is pronounced, but it's nice to see them there

[@williammorgan-boyer9604]

This 100%, it’s almost like quebec french is it’s own dialect nowadays

[@bishop1412]

Tom has always had crazy cool subtitling on his videos, I sometimes turn them on just for some easter eggs that they've put just in there in the editting.

[@doubleT84]

An English speaking French? Liar! 😉

[@hdog679]

"I assumed simulating water was pretty much a solved problem" *Navier-Stokes has entered the chat*

[@IstasPumaNevada]

Nice. :)

[@hebl47]

And even then, Navier-Stokes is usually solved for fairly smooth and constant walls. Not ones that erode.

[@annaapple7452]

And even if you start to have a bit of grip on fluid dynamics, bam, sediment transport happens.

[@J_Halcyon]

Turbulent flow modeling 👀

[@garr_inc]

I still dread my memories of the time we were taught Navier-Stokes equation for water. And we didn't even do much with them.

[@quietsamurai1998]

I've always been fascinated with model waterways, ever since I was a little kid and there was a demonstration of erosion using a table of sand and a flow of water in class one day. I love that there's a near-full-size version of the same thing!

[@RagingAcid]

I worked at a theme park for a couple summers and whenever my shift was on the water rides, I'd very much enjoy watching the flow when it was down.

[@user-op8fg3ny3j]

Same, that's how I got addicted to making ponds and rivers for koi

[@thesuperintendent4290]

When i was a kid we had a 3 model dams that we could release and control the water flow and you could make model houses and simulate the destruction. It was based of the dam busters movie which is about the bouncing bomb. Its of real life and it was well cool. Still there to this day.

[@spiercephotography]

We mades ours in science class with plaster and water! It was so cool

[@SamSitar]

they are fun to watch as well.

[@annekedebruyn7797]

They even have ducks. So realistic.

[@evangreavu9621]

How do they turn the ducks on and off?

[@IstasPumaNevada]

@@StefanHundhammer "Which would you rather have in your simulated river; a flock of hundreds of ducks, or two horse-sized ducks?"

[@myladycasagrande863]

@@StefanHundhammer do DuckZillas usually affect erosion?

[@antoinepaquette3666]

This is the university I went to and Jay Lacey was my teacher while I was there! He is a fantastic teacher and is the reason I love hydraulics and hydrology! Sadly, the river wasn't built when I was a student as I would have loved to work with it! Thanks Tom for coming to our small town of Sherbrooke!

[@felicitygee381]

But does the guy normally speak that loudly or was the sound engineer just that good at filtering out he background noise?

[@antoinepaquette3666]

@@felicitygee381 I don't specifically remember him being that loud 😂

[@moontrasher7023]

Small town... 😭😭 I moved from a 70 000 town to Sherbrooke and it's huge to me hahaha

[@auritroroy1125]

The look on the prof's face when asked about the tube is priceless

[@Hoaxe72]

Time stamp?

[@WhittaII]

@@Hoaxe72 the end

[@tams805]

@@Hoaxe72 It's not even a five minute video. How about you just watch the whole thing?

[@me_n_the_boys_lookin_for_beans]

@@Hoaxe72 4:20 amusingly

[@prva9347]

It's as if Tom just gave him the idea. When the prof repeats that he wouldn't advise it, that's when you know he's going to do it :-)

[@jimc.goodfellas226]

How Tom keeps finding material for his videos is beyond me. You'd think this guy has done it all by now

[@chelsey8737]

Ikr! I always wish I had some cool place to suggest but I never do ☹

[@Sam-mk8rn]

@@slowstone72 he made a video about how he’s going to eventually stop weekly uploads and made a google form for people to submit video ideas to him

[@ryanclemons1]

nope he still has yet to do many things my friend and most likely never will

[@bgezal]

There must be thousands of odd university funded experiments around the world to explore.

[@jliller]

There is a lot of fascinating stuff in the world that 99% of people have never heard of or seen.

[@_lime.]

Very cool to see you in Canada! As an engineer this is the kind of stuff we love. Computer simulations are great but a scale model (or if feasible, full size) can give you so much valuable data. This is especially true when fluid flow is involved as it's still very difficult to simulate, this is why wind tunnel testing is still so common. I work for the Canadian Coast Guard and many of the vessels we design and build are icebreakers (obligatory frozen Canada joke here) so we do a lot of ice tank testing on models as it's really hard to simulate all the loads on a vessel's hull as it transits trough an ice flow. Tom, I'd highly recommend recommend contacting the folks at the Nation Research Council of Canada regarding their ice tank in St. John's Newfoundland. It's a top notch facility and one of the largest ice tanks is the world. It's government owned and operated, and I'm sure they'd be happy to have you visit. The NRC also has over a dozen other facilities around the country doing interesting and important research in a vast array of fields, including a large 9m wind tunnel in Ottawa (actually a lot of their buildings are in Ottawa, given that it's the capital and all). Well worth checking out. If you're interested in ice tanks on the other side of the ocean, we've also worked with Aker Arctic in Finland, who operate a slightly smaller tank, and Aalto University, also in Finland, who has an even smaller but still substantial tank. We often use all the tanks as different groups have different methods of replicating sea ice and therefore models perform differently in each tank.

[@paulknowles6300]

Sadly...Tom took the vaccine to comply with Turdo and his Nazi injection... Hopefully Tom is alive next year and able to continue his work.?

[@davyman2000]

You should add this to his video request site, it’s a good idea!

[@ferretyluv]

He has a Google form you can fill out to invite him to places.

[@soundscape26]

@@paulknowles6300 The hell?!

[@FlyTyer1948]

Brilliant. Would love to see this!

[@thomaswade3072]

"I wouldn't advise it" is an incredibly polite way of saying "Are you mad? We can't possibly have that on our insurance."

[@InternetEntity]

"Unaffected by wildlife" 2:58 - Quack

[@TimoKanal]

Tech Support: _"Have you tried switching the river off and on again?"_

[@BlackfeatherTanfur]

Thank you, Roy (reference to "The IT Crowd").

[@RK-ee1bc]

not working? try removing the ducks and try again.

[@dbseamz]

@@RK-ee1bc insert witty joke about Programmers' Rubber Ducks here

[@PeterLePresident]

To think Tom was only an hour away from me makes me happy. I'm glad you came to Quebec to see this. I'm sure there is plenty more that can be found around here.

[@shinyagumon7015]

Tom: This is an artificial river built for serious research. Also Tom: tries to go down it with an inflatable tube. Honestly be glad they didn't allow it or you might've ended up like the Go-Pro.😅

[@winters4960]

Serious research means a group of people get the fund/grant to play around with their imaginations so-called-variable. Difference with other is after playing around they have to find another grant to write and publish it to smwhr.

[@JessmanChicken86]

The way Tom breaks down WHY the thing exists, is a real skill.

[@RigzDigz]

This video got me pumped up! You are an endless stream of information Tom, thanks as always!

[@DampActionRC]

Water you saying?

[@Geeksmithing]

Can't wait for the inevitable flood of water puns.

[@timwilkinson2797]

I sea what you did there !

[@imveryangryitsnotbutter]

Dam, I gotta step up my game.

[@Potato_power12]

well that'll be a dam

[@TrevorDennis100]

In New Zealand most tramping (hiking) deaths occur from drowning when people cross the rivers that can suddenly go from nothing to full flood because of our high rainfalls and mountainous terrain. The rule of thumb is to not cross if you can hear the rocks rumbling. There is enough power in a raging river to move surprisingly large rocks, so people have no chance! The rivers subside as quickly as they flood, so just walk back to the last hut and wait it out.

[@user-ih7gc7dt9l]

Good advice!

[@krashd]

The scene in Lord of the Rings where Arwen turns a stream into a raging torrent seems apt for the filming location now.

[@prettypic444]

Reminds me of flash floods here in california. my grandfather used to point out large boulders in dry riverbeds and say "how much force doe you think it took to move that?" to teach us not to play there

[@JohnUnit]

There are quite a few smaller (in terms of money and students) Canadian universities with absolutely massive amounts of land to play with. I wonder how many more cool things there are like this on their campuses

[@ngwoo]

University of Saskatchewan has a synchrotron, not exactly unique enough for a video but they likely wouldn't have it at all if it wasn't for the massive amount of land they own right in the middle of the city.

[@Arcangel0723]

I am honestly flabbergasted by how large some of the campuses are here. I live in a city with a few decent sized universities and the largest feels like its own mini town.

[@liliththeraccoon355]

Ive been to the U of A campus a few times and they have so much space with so many cool buildings. I have to say that walking through their mall was my favorite part though.

[@CrushJPO2]

This reminded me, there's a full scale natural river called the Ocoee in Northern Georgia that was dammed off and now the river is redirected during the week to provide hydroelectric energy, and during the weekend they open the dam and the river becomes a huge natural white water center. It would be really neat to see a video of a system like that at full scale!

[@adaoraelliott9254]

You should submit this to the google form that Tom was talking about last week! He needs video ideas!

[@simonboucher7152]

This is my Alma Mater, exactly. I did my bachelor's and Master's at UdeSherbrooke civil engineering faculty. (More on the building side tho) Very happy you could show some of what we do :)

[@AvsJoe]

Props to the audio editors for cutting out all the ums and ahs, you can tell by the finished interview that the professor didn't make their jobs easy

[@JBLewis]

Over the course of two years in junior high, our school bus passed over a small creek. It was fascinating to watch how that creek moved about in its banks over time. With modern tech, it would be interesting to use a trail cam or something similar to capture an image or two every day, and compile that into a time lapse.

[@KarlTremain]

Love that "Crystal Maze" nod at the start... i saw what you did there :)

[@PLNPlays88]

me too xD was amazing . love his channeling of Richard O'Brian there.

[@theracc2318]

I live very close to the University of Sherbrooke and I have walked by this simulator many times in my life, however I had never realized it was such a special piece of infrastructure! I though it was a necessary tool that every university with civil engineering classes needed. Thanks for the discovery!

[@Sandy.J.Lloyd.Sr.]

I built a system just like that with a waterfall and a river, but a lot smaller in size. It’s nice to sit in the garden and listen to the water flow over the waterfall and watch Tom Scott videos on my phone.

[@xTurtoise]

this is my university! so glad you could cover this story 😊

[@alexwien1]

This reminds me of my visit to Niagara Falls. We were joking about them turning them off at night - and off season they actually do. The machinery doing that would probably be an interesting subject for a future video

[@OntarioTrafficMan]

To clarify: Niagara Falls doesn't get turned off at night, but a large portion of the flow does get diverted to two hydroelectric power stations (one Canadian and one American). There is a treaty defining how much water each country can use at given times of day during the peak vs off-peak season. There is no shortage of electricity at night so the power is used to pump water into elevated reservoirs which are then used to run they hydro stations during the day.

[@deejaudible]

Thanks for being the guy that sees something and says, "that looks interesting, let's pay some people to explain it to us professionally so I can share that information to everyone else". You're mind is like mine, but you have the means to act on your curiosity, and it's glorious! Thanks for letting us live vicariously through you sir!.

[@krashd]

I would like to think people work with Tom for free because they love their work and it's free exposure.

[@elevemoyen886]

Good to see you in Quebec! I hope you'll do more videos here, there's plenty of stuff to see that could be interesting, like Manicouagan for example

[@allisont.6878]

He rarely travels to another country to film only one video. I have no idea where else in Canada he's gone, but I suspect we'll see a few more cool things from there over the next few weeks.

[@myrealusername2193]

@@allisont.6878 it would be interesting to see a video about the bridge between Nee Brunswick and PEI. The scale of it really only hits you once you see a video or are actually there in person. Especially once you realize you can spend 15 minutes driving across at the speed limit Plus it’s just a cool piece of engineering that has lasted decades now.

[@krashd]

There's good fishing in Kwee-bec.

[@elevemoyen886]

@@krashd Great fishin’ in kyu-bec! Who doesn’t love fishin’ in kay-bec?

[@Ederick1936]

@@myrealusername2193 and the $50 fare on the way out is solid proof that PEI is, in fact, actually a theme park.

[@K0ALA.]

Imagine if Tom had a programme with the BBC. I could honestly watch these videos for hours

[@leek6927]

Honestly that would be worse, they’d have more restrictions on what he could do, you would have to have the BBC (outside of the UK many do not) to watch it, and you wouldn’t be able to watch his videos on demand for free when they come out anymore

[@BlueJayYT]

Cool rainbow behind Prof. Lacey! Being from the Midwest, I'm legally required to point out each and ever rainbow I see.

[@rubix2148]

There is now whay this is happening! I studie att l'Université de Sherbrooke and last week-ends i came across this new structure, and i was wondering what that was for, and juste after that, you make that vidéo, just wow, who could have think i would find out by one of your vidéo😆 very good work! (Sorry for my english no time to verify my traduction, only have 10 min break in my thermodynamique classe) 😂

[@cr10001]

What is really difficult is the fact that it's not just fluid flow, you've got a river bed of varying sized rocks; the water moves the rocks and the rocks influence the flow of the water. So computationally, you've got massive complications.

[@Dabeaux]

I worked at an amusement park for a summer and it reminds me of the water ride I worked at, we would pump insane ammounts of water from a lake into the ride, then turn on more pumps to pull that water vertical and then flow it downhill around course. Was really fun watching the ride turn on and off, It would fill up and drain in minutes.

[@brokendad2222]

Another in a long line of excellent quality videos. Tom has a way of providing the spark that is needed to make the viewer interested in all things. Thank You, Sir.

[@lawrencecalablaster568]

During the summer I worked at a children’s museum, one of my jobs was to demonstrate & clean up the water table. I really want to have something like this in my yard :)

[@icecreambone]

a challenge for some problems in computational fluid dynamics is different time-scales for different space-scales of flow. if you want to model something small, you have to have a small timestep, but if your timestep is too small, long simulations take a looooooooong time to run, but if the simulation time is too short, then you won't capture the larger scale effects

[@killer1479]

" will you start the pumps please! " takes me back to the days when i used to watch, the crystal maze and the " will you start the fans please! "

[@gregs2284]

I like how he casually mentions it's "very dangerous" to enter the river just after Tom says his cameraman waded in to retrieve a gopro

[@Fantic156]

I liked (@ 3.35 ish) where the river flow on camera was also carrying debris, leaves, grass, small pebbles and sand etc ... A simple thing, but presumably very powerful as a model and test bed. 😜

[@garr_inc]

For future: if you want to create a timestamp for the moment, you should use : instead of a . when showing time. In your case it would look like 3:34 (I made it a mite earlier).

[@joebleasdale5557]

0:31 love that Tom saw the perfect opportunity for a Crystal Maze reference 😂

[@RibbyCribby]

that last little bit where the water is flowing into the river, youtube's compression totally jacked that up. i learned that from a different tom scott video

[@juasjuasi4750]

I study there! i never realized that the artificial river was made for that, quite a bit far from the main campus buildings too!

[@BangleDang]

Tom, you always brighten my day with places I never knew existed. it is as if my education didn't stop with school, that was just the beginning. We keep learning, and that is thanks to people like you, and our own zest for understanding the world. Thanks!

[@Brown95P]

I like how the river model is so convincing even ducks are swimming in it @2:58

[@krashd]

They are part of the model, fresh ducks are released when the river is turned on and then humanely destroyed when it's turned off. PETA go apeshit about it but accuracy is everything in a simulation.

[@TinyWarriorAnimations]

Your videos open up studies and new ideas that have not crossed my mind, thank you for all you've done over the years Tom.

[@Iamthelolrus]

I remember feeling the same way as yourself when I found out we haven't modeled the full behavior of h2o. I remember someone saying, "so that's why the weather report is always wrong".

[@Cow-Moth-With-A-CRT-Head]

I love when Tom starts a video with "you can't do X... unless you do." It lets me know that the video is going to be even more interesting than usual

[@jeremyowen1]

I would have so much fun with that simulator. Took up river fishing this year and ended up wading a lot. I had never really waded before but realized it's one of the most relaxing experiences I've ever had. Then I became addicted. Was also looking at a career change and going back to school. Though I'm already almost 30 and still don't know what I wanna be when I grow up. After spending this season on the river, I can say I would love going to work everyday as long as I could do something to positively impact that system. Maybe a career path along the lines of Environmental Technology. Not sure yet. Super fascinating video, thanks for sharing Tom.

[@allietoombs2204]

I swear that all of these science videos always relate to my environmental science class perfectly

[@midimusicforever]

A research river. One of this thing my mind hadn't conceived that it would be a thing until Tom showed it to us!

[@r3stl3ss]

1:54 i thought he was gonna say "it does a very good job at washing away GoPros"

[@El_Smeghead]

Liked the Crystal Maze reference👍👍 "Start the fans, please!"

[@firstkeepitreel]

0:31 Tom saying “will you start the pumps please!” Immediately took me back to the old game show Crystal Maze where Richard O’Brien would yell “would you start the fans please!” In the crystal dome. Tom even said it in a similar manner

[@TheStaggpaul]

Absolutely the ice needs to be modeled. Realy great work! Love it.

[@dziban303]

In addition to the Bay Model there was a huge scale model of the mississippi/missouri/Ohio system called Mississippi River Basin Model outside of Jackson MS built in the 50s or 60s. It's been shut down now. There's also a scale model of the mississippi at Mud Island in Memphis which you can walk along and splash in. Very cool

[@BlackfeatherTanfur]

You beat me by a day in commenting. I did however link to the 99% Invisible podcast article on the MS river model from 2016.

[@basemmahmoud2569]

Interesting, was it erodible? can it reshape itself

[@heather7895]

This was truly fascinating! Thank you, Tom!

[@jengriffiths8683]

As a civil engineer this is so cool. My entire master thesis was on scour of bridge piers in rivers and involved complicate fluid dynamics modelling that I didn't quite work!

[@mtty1988]

You needed the crystal maze theme when the pumps started

[@sihollett]

Tom channelling Richard O'Brien there.

[@Riplee]

I used to draw little channels in the sand to drain large puddles as a kid. That small scale model would be my preferred version of a train model town 🤣

[@dbseamz]

I remember doing that! I still do sometimes, although it's more out of necessity to stop rain from leaking into my garage than for fun.

[@dennis2376]

Thank you and have a great week.

[@senecathefuka441]

Thank you for the video Tom

[@quiteadept]

What a lucky coincidence that they happened to have a Go-Pro Rescue Operator on staff the day Tom was there.

[@crackwitz]

ye they were just waiting for that to happen. they work with flowing water all day every day.

[@MACMoneU2]

I love that they even have ducks! I bet they are confused when the river turns on and off. 😆

[@owensparks5013]

Yes, they were very well simulated.

[@k.umquat8604]

@@owensparks5013 Birds aren't real

[@EmptyGlass99]

The best thing about these videos is hearing the expert discuss the thing Tom is showing off.

[@y_fam_goeglyd]

This is really cool! As a one-time geology student, I appreciate how much this is going to help in many studies. It could save lives!

[@Broonie719]

0:32 haha Crystal Maze reference

[@johnbass66]

If only I knew your passed by!!! I work in the research lab right by this artificial river, in a lab working on/designing/building drones for various applications. It would have been nice to show you around, even if it wasn't for a video!

[@basemmahmoud2569]

Hi john! I am working on the facility. I will be interested to see your drones. I am working with some already at the experimental facility. I probably seen some of your drones from a distance. You are also welcomed to visit the facility. :)

[@macaquinhochico]

the more i watch your work the more i admire you just a word thank you

[@gizmostudioshd]

Crystal maze reference made me all nostalgic. As a kid, I was absolutley obsessed with that show.

[@DarkIzo]

hey tom, i would really like to see a video of you diving into the topic of 2-wheeled vehicles like motorcycles. those things seem to simple but they are just dancing with physics to achieve what we witness and thats a very interesting topic imo. good video as always and cheers for your efforts

[@Hansengineering]

No one actually knows how they work. Not as a complete model.

[@piuthemagicman]

My local river, Kajaaninjoki in Finland was turned off two weeks ago between two powerplants, it is natural river betwewn those powerplants at least. It was completely dried for that bit in the middle of Kajaani city. They did this a decade ago last time. It was filled up later that same day.

[@JanTuts]

Did they divert the water, or hold it up in a reservoir or something?

[@lunasophia9002]

... how do you "turn off" a river? Where's its off switch?

[@piuthemagicman]

@@JanTuts yep they held it up in a reservoir 😎

[@piuthemagicman]

@@lunasophia9002 turning off a *thing* does not nearly always happen instantly, or by a one stage process 😄 I don't quite know the details of this "case river" though

[@basemmahmoud2569]

Interesting, how was the river bed?

[@beerenmusli8220]

The Ducks very very good birbs. Much apreciated to have them in the Video.

[@sidakdhingra2493]

Enjoyed watching this video!

[@abydosianchulac2]

Other benefit to this setup: you get to spend the day by a fake river outside instead of chaperoning a computer churning out your model.

[@basemmahmoud2569]

Haha, Trust me it is not as if I am enjoying the fresh air reading a book while the simulation runs. At the end of the day, I get to do both; outside in the summer and churning out my model in the winter :)

[@prateekpanwar646]

One of the interesting things with your videos is that you cannot tell if it was recorded today or 10 years ago. The direction, recording techniques have evolved a lot but the consistency and red T-shirt gives off an illusion that they haven’t .

[@f3600]

Thx for the french subtitle! I usually use the english one since almost no one do them in french. Merci !

[@subynut]

That's really cool! Having a playground for Civil Engineers to test and validate theories and data models regarding rivers and water flow is a great tool. Thanks for doing the video. I enjoyed it!

[@digit975]

You should go to the Wave Lab at Oregon State University and make a video on how tidal waves are made and studied. It’s such a genius and fascinating facility.

[@PeterusTV]

water

[@Thespikedballofdoom]

water

[@mitsunori222000]

Fascinating as always.

[@jessxxy]

Very educating Tom 👍🏻

[@VikramCSX]

Tom Scott works so hard on these videos he definitely deserves a break from YT

[@louisrobitaille5810]

3:23 Simulating water accurately is actually very far from being perfected. I don't think it'll be solved until we aolve the Navier-Stokes equations (I think that's what it's called?)

[@whytushar]

Tom always comes up with these fascinating stuff

[@standupmoto]

Once again another great informative video, thanks.

[@michaelocyoung]

So after finding someone who sounded like Tim, you now found someone who looks like Tim?

[@deamoncohln9506]

How I wish I was in Sherbrooke now

[@philippehardy6994]

A letter of marque came from the king

[@thomaszinser8714]

@@philippehardy6994 to the scummiest vessel I'd ever seen

[@allanolley4874]

We'd fire no guns! Shed no tears!

[@sbs5130]

2:58 Naturally, a Tom Scott video would feature ducks whenever possible.

[@romaindubuis8373]

How funny! I just had an online conference on rivers organized by this university last week, and Prof. Jay Lacey presented this exact river. What a coincidence!

[@turun_ambartanen]

Today I read an article on the New York Times "Can Germans Save Their Beloved Rhine?". It is about droughts and the effect on transport on rivers, and to combat this the Germans actually did build a scale replica of the river and use appropriately selected sand to simulate the effect of erosion on their attemps to improve the depth of the river at an important section of the river.

[@basemmahmoud2569]

Thanks for sharing the article. At our university, we are researching riverbank erosion, not just erosion occurring on the riverbed.

[@bALDbOY85]

i come out of the shower and HE posts.

[@user-vs9ds3dc2y]

Watch him in the shower 💀

[@alexanderp5848]

Im super impressed how Tom explains without any cuts. He can make 20 min videos interesting in one go👏 . He would be a great teacher

[@MB-st7be]

The Crystal Maze reference did not go unnoticed