Fluids at Rest: Crash Course Physics #14

[@crashcourse]

We made quiz questions to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: apple.co/3d4eyZo Download it here for Android Devices: bit.ly/3TW06aP

[@emopeterparker7]

These physics videos make me appreciate it so much more! Thank you, crash course, for helping tons of students not only learn but actually like the subjects taught to us.

[@ATsundereKitsune]

when you explain it: interesting! makes sense! when my teacher explains it: gibberish

[@alhamedabdulrahman1835]

Wow, I just watched a whole chapter in Fluid book in 10 minutes with a fully understanding !! Thanks a lot Crash-course, That's a GREAT WORK !!!

[@ka1e_chips]

Is it just me or she sounds more excited in this episode?

[@RebeccaS1231]

Makes sense given she said it was her area of expertise

[@DS-Pakaemon]

Engineers love fluids!!

[@nikitaevans4572]

Cubestormer Iv I

[@Jukebox300Minecraft]

I mean, this is some really cool stuff.

[@stephmr47]

The description box says she is a Fluid Dynamicist

[@coolusername9077]

This is interesting as hell, shame I’m trying to understand this at 10 pm for a test I have tomorrow ☹️

[@nothingspecial7399]

thats a .... cool username

[@tholfi100]

Cheers to the ThoughtCafe! Must be very hard to animate such complex topics, especially if you only have a script to work with.

[@joyridinYT]

Thank you so much.. I finally understand 😭❤️ you’re helping me pass first semester physics

[@nairmanish]

True that!

[@HunterNapier]

I cannot believe how WELL this series is able to connect everything. From episode to episode, I've been able to put all these abstract concepts in my head together. This one was the definition of pressure. Thank you. I have a final tomorrow and barring my awful math skills and the teacher's insistence on that we must be tricked at all times, I feel -conceptually- ready.

[@BrainBuzzer]

my exam is in half hour and this is first time I am hearing something like this. 😢😢😢

[@Hatsimmale]

I feel you :/

[@trapking5390]

How did it go?

[@sethclark9060]

Funeral was last week it's too soon to talk about it my friend

[@malo3287]

how you did?

[@tomdaniel872]

Lol.

[@Richard_is_cool]

I just want to say that these graphics are just so gorgeous!

[@soundninja99]

You should do Crash Course computers (computer science) and Crash Course electronics as theese are some of the most important industries out there. I think that a CC computers and a cc electronics would inspire young people to pursue a career in the two fields, and show them that it's easier than you'd imagine.

[@DS-Pakaemon]

Yeah yeah yeah yeah yeah yeah yeah!!!! I need it badly!!

[@ArnyBoy]

its already there check b4 u comment

[@adeleke5140]

@@ArnyBoy you realise that you replied a year later right?

[@dikkiii]

@@adeleke5140 so did you

[@payaljoshi6204]

My textbook's 30 pages summed up in 10 minutes. Keep these videos coming. They help me revise well. :")

[@jennytran0721]

i spent 2 hours trying to solve a physics problem and failed. 2 mins into this video and I solved it. Thanks for making me feel bad about paying for my tuition. :)

[@moxi_floxi]

I finished my first and only Physics course this past spring. Still super salty that I didn't have this available to me then.

[@chowtom5174]

salty, well you have CC Chemistry :P

[@seandafny]

Sucks dont it

[@moxi_floxi]

Chow Tom LOLOLOL I took my first high level Chemistry course 4 years ago, and have had multiple higher level courses since then, like Drug Pathophysiology, where we talk about how medicines move through the body, what properties they have that make them bind to receptors in the body and stuff. If anything, that makes me more salty. By the way, no disrespect to you with all the lol's, I'm just wiping the salt off my face because I was just one year too early to have this stuff when I needed it the most.

[@sahajsingh3302]

Jeremy this got me to a 5 on physics 1

[@ada3360]

THANK YOU SO MUCH FOR EXPLAINING AN ENTIRE CHAPTER IN 10 MINS!!!

[@carmencitaionescu]

when i was around 13 ( i'm a 16 y.o romanian boy ) i've learned in school the boyant force..called here archimedes force, and when i asked the teacher if always the same percentage of an iceberg remains under water (it's about 90 percent and she said yes ) i had some sort of a smaller eureka moment :)). that day i made a formula of what percentage of a body's volume remains under water, and it was the body's density divided by the fluids density and multiplied by 100 ( if the percentage is bigger then 100 it obviously sinks ). when i showed it to the teacher she took a brief look, and said it's completely wrong, she didn't like me that much. it's so bad to have dumb teachers..but gladly we have crashcourse now! :))

[@trevorx7872]

So the equation is something like [density of floating thing]/[density of fluid]=[fraction of floating thing that is below water]

[@nothingspecial7399]

relatable bro

[@xavierwright8783]

why did I sign up for physics

[@Ashcombeguy]

Because if you can use it to springboard into engineering which pays big bucks

[@deechonada]

+Adam Pardoe yurp

[@chowtom5174]

and you get paid big bucks to do impressive things as well, which is better than sitting at an office filing paperwork.

[@aman.s.rathore]

Thanks crashcourse tommorrow is my test and this video has made it easier for me to understand fluids.

[@BeautifulFreakful]

I love the pile of Feynman Lectures on Physics on your desk.

[@jk35260]

I am not sure if lessons should be delivered with such speed. Students who just started learning about pressure will probably be lost at the latter part.

[@matthewharbour6276]

Shini is so beyond beautiful, I now know what "lost in your eyes" means. I have to watch it twice just to catch it all, First time for everything. Femininity incarnate

[@drink15]

So this isn't about drinking water before bed?

[@ashley0980]

LOL

[@chanakyasinha8046]

You will sink

[@safaesafae6041]

You're an amazing teacher Thanks

[@babatulani6361]

FLUID DYNAMICS OOOHHH BOOY THIS IS GONNA BE A RIDE.

[@DanThePropMan]

I don't study physics or use it in my work. But I could listen to Shini talk all day.

[@jackdaniels4975]

Hm seems youd be the type to go for Lara croft too. both british

[@DanThePropMan]

Eileen Blurrr There's more to having a great voice than just the accent.

[@jackdaniels4975]

Yeah but Lara crofts voice actor is pretty good sounding too. at least for that new game

[@bottleofwater1675]

1:13 *Americans* : that’s insulting and unacceptable.

[@Tom-df8bb]

She is one of the best presentets. Have her on more often please

[@Tom-df8bb]

Presenters*

[@1337FrUstraTiOn]

+Neeni1994 Screw how she looks like. I could listen to this smartness whole day.

[@mehenuryasmin5692]

man give the comment section a glass of water! you are watching physics not biology ;-)

[@ganaraminukshuk0]

I found that the most fascinating application of Archimedes' principle is the Falkirk Wheel in Scotland. Plus, there's a whole lot of interesting physics behind it, anyway.

[@M4ruta]

"Thanks to Archimedes, we know why objects float and sink." 8:37 Isn't it more accurate to say that since Archimedes, we know HOW they float and sink, but not WHY? It seems to me that the terminology used to explain the differences in forces is Newtonian physics rather than classical physics. Don't want to nitpick though, I love this series!

[@ajeuscher7988]

Nice work, this series is really starting to get into stride

[@emilielum7813]

Best review video on static fluids I've seen! Thank you!!

[@jackjohnson3962]

Hey Crash Course you're doing an incredible job! Keep going!!! What about doing a CRASH COURSE MUSIC?? For example, teaching us how to read music or the different music genres and their characteristics, such as Rhythm or their harmonies or even their history.I really think it would be a very great idea :)

[@akiranightfury9319]

I love this "new girl". She just like the main two guys looks incredibly presentable, plus love her accent.

[@andreipenciu13]

Thank you! We've learned at school about Archimede's principle and I managed to do pretty well, but it was something weird about it that just made me think it wasn't intuitive at all ! After I watched your video something just clicked in my mind and now it seems very simple and logical to me ! I know this sounds pretty generic and you get these kinds of comments every day, but I just wanted to say it was an eye opener for me! ☺

[@Minimixxu]

this explained the buoyant force so well

[@MEU98]

Since you have done a crash course on astronomy and on Classical Physics could you do one on Quantum Mechanics??I know that you have a couple of videos on nuclear physics for crash course chemistry but a whole series dedicated to quantum mechanics,nuclear physics and fundamental particles would be extremely interesting.

[@crashcourse]

This is something I've been pitching for a while, but it would be a significant step for us. We're working on it at some point though :) -Nick J.

[@pamali4668]

The video is meant for people with a basic idea on the subject. This channel is called ‘crash course’ physics for a reason .. so stop complaining about how fast she’s talking ..

[@shojintam4206]

Content table Fluid at rest Pascal's principle Manometer's and barometer Archimede's principle Buoyant force (Pressure on water at bottom greater than water at the top)

[@ash652]

God! Why is Shini so cute when she's excited! Look at her smiling the whole video!

[@kaztheshinigami]

physics issa my life

[@esabkhan7901]

thanks this vido was understandable to me

[@benhbr]

Archimedes lived in Syracuse, Sicily (then a Greek colony)

[@andreascovano7742]

Exactly!

[@dariusniederer856]

YES and that was in Sicilly, modern day Italy, not greece but I guess this is about phisics and not history.

[@dariusniederer856]

+Darius Niederer He was apparently killed by a roman soldier after they had attacked his home city. The roman commander knew how smart he was and wanted him alive but when the soldier told him to come with him he told him not to disturb the calcu ations he was drawing in the sand. He was promtly struck down. Apparently he had previously also designed war machines to help defend Syracause although some of them like ship-burning mirrors seem to belong to fiction,

[@Kabodanki]

That's what I tell everyone at work when I arrive.

[@deezynar]

The Greeks and the Phoenicians both had trading outposts, colonies, all around the Mediterranean Sea, usually pretty close to each other.

[@VoidHalo]

I remembered diving to the bottom of a 16 foot deep pool once and it hurt like crazy. I just worked it out and apparently it was only a pressure of about 1.5 atmospheres or ~150 kilopascals. Not nearly as much as I thought it would be based on how it felt. Shows just how sensitive people are to pressure changes. Though I'm sure it would have helped if I popped my eardrums by blowing out with my nose plugged.

[@AlexeyVillarealPardo]

If the Bernulli equation is solved, the final pressure (P) is equal to the initial pressure (Po) plus ¡ 2 times ! the density (times the acceleration constant by gravity) (times the difference in fluid heights) !! P = Po + 2gΔh !!! Thanks for the video is very useful

[@bethanybrown2022]

Just 2 more months and I never have to think of this confusing stuff again. I understand the basic stuff that we learn in elementary school but when it gets more complicated and I try to apply it, it makes no sense.

[@tradingcrtea697]

She is SUPER excited.

[@iliasaarab7922]

Love the added animations!

[@valentijnraw]

After all her vids i realize im in love with her. I mean look at her hair alone. She is a godess

[@Elymichie]

Oh nooo I need more videos! My final is in a week and theres still more material I wanna watch a crash course video about!D;

[@juliamigliore5418]

I have to say, I could not be more thankful for Crash Course Physics. With the beautiful and helpful graphics and impeccable writing, this series and everyone who worked on it is what is keeping me at an A+ in Physics for Bio Majors

[@AzuliManni]

Crash Course: Architecture, anyone? I think it would be splendid.

[@AzuliManni]

I see where you're coming from but may I ask you, can music have the capacity to change individuals or the ability to bring people together, building a sort of community?

[@MechTechSimulations]

Awesome explanation!

[@saurabhp3372]

Explanation is so interesting.. Keep it up..animation is also interesting make more videos as possible u r awesome

[@A_Ace]

But.... was the king's crown pure gold?

[@Modernfamilyfans90]

I kind of love you. ❤️ Thanks for making science easy for me.

[@chowtom5174]

So, force of gravity on ball depends on mass, and force of buoyancy depends on volume. I have a question. Imagine a cylinder which height is greater than its diameter (so it's a thin cylinder). First it is placed horizontally on the water, then it is placed vertically in the water. Since buoyancy is the resultant force from a difference in pressure, can I conclude that the cylinder in the second situation experiences a larger buoyancy force than that of the first situation because of its orientation?

[@nsceblackshot]

I love physics

[@charlesdavies9726]

Need to take her class asap!

[@rahullyrids4959]

its like a georgeous model given a textbook of quantum physics to read infront of the judges

[@dishadebnath9072]

guys ... a solids mechanics video needed please

[@dajaq.6497]

Thank you for this course. At last I understood how to calculate the mass of an immersed object...

[@ssgbros.6382]

Very helpful and she's gorgeous!!

[@Dominikbeck12]

I really do like your derivation of the Buoyant force!!

[@emeyemeeye2787]

Thank you, thank you so much for Crash course physics!

[@kian0902]

Very educating. A big thumbs up from Norway!

[@rockyavg7212]

Watching these videos is one way to get a headache.

[@mohamadmulkinugraha4813]

Truly a crash course, thx :3

[@ltgoonie397]

symmetra?

[@shadowsoflife]

You're the only one who sees that.

[@TEC0Y]

lol good one

[@Chasenyx]

made my day

[@raiccoon13]

Nah Pharah

[@shadowsoflife]

Symmetra a better fit since this the course is Physics.

[@Edgewalker001]

But putting an object in a liquid doesn't really increase the liquid's volume at all, it just pushes an equal volume of liquid to its own volume aside, displacing it. That's why by putting the crown in a bowl of water that's filled to the brim and then measuring the volume of the water that is displaced and runs over the edge, you can find the crowns volume. So to reiterate, no increase, just displacement.

[@andreaadams6177]

I keep waiting for them to stop making mistakes like this. It seems like they don't have any actual TEACHERS consulting on this. This "seems" like such a silly distinction to a scientist with a masters or doctorate, but it's a fundamental misconception and they explained it in a way that will perpetuate that misconception!

[@crashcourse]

Sorry about that. I'll have a closer look at it and talk to our consultants (who are teachers of varying grade levels) and see if we should annotate that or something. This is one of the most difficult parts of video, in that, if something slips through, it's much harder to fix. Whereas in a lecture, you can just step back and say, "Oh whoops, what I mean is this..." - Nick J.

[@andreaadams6177]

+CrashCourse I completely understand what you're saying. Thanks.

[@calholli]

4:00 y0u left 0ut a key feature in that the f0rce and distance m0ved are inversely related. s0 in y0ur example, it "d0ubled the f0rce which means it w0uld m0ve "half the distance. s0 if y0u m0ved 2in 0n the input, it w0uld 0nly m0ve 1in 0n the 0utput.... s0 its d0uble the f0rce but in half the distance. the same equati0ns apply t0 pulleys (I believe).

[@krkaasyap8132]

ended having perfection and a crush

[@momergil]

AFAIR from my course in Control and Automation Engineering, m/v is not density but specific mass; density is the specific mass of a fluid in relation to the specific mass of water, whic is 1. :T

[@darkmatter3538]

This woman is VERY PRETTY!!

[@jeenajavahar7499]

K'von Tanner ikr!! She's so smart as well!!!

[@mikemeetstec]

Pervert

[@diinferhatovic4623]

@@mikemeetstec idiot

[@ChrisA202]

Yes. I think Dr. Shini Somara is the most beautiful woman on earth. Seriously. And obviously very smart, and talented. Seems nice too.

[@frewqfrewq8695]

This will probably get me a 10 in GCSE physics

[@frewqfrewq8695]

9

[@ashleymccarley13]

Watching this as I study for the MCAT. Great over views of the things I read. Very thorough. Sometimes a bit fast but that's what rewind is for ^_^. Thank-you for posting these. Physics and fluids are by far my worst subject

[@JedCapitan]

so much better explained than my old science teacher ^-^

[@bloodfiredrake7259]

this could've helped in my physics exams

[@MFfuji29]

Your videos help so much thank you

[@charityv570]

Best cc vid

[@jatinchhikara5880]

Very helpful

[@theamazinglandshark]

More fluid dynamics please :)

[@michaela4479]

thank you for this

[@geniusme8060]

this is some serious editing pls tell me what you used to edit this video

[@aadithyahrudhay2269]

Thanks for the helpful video. However, I still have a doubt to which I'm not able to find a satisfactory answer, i.e. What actually causes Upthrust? As in why should liquids exert a force in the Upward direction? I know that liquids exert pressure in all directions, but what causes this at the molecular level? Thanks.

[@legitgopnik8431]

When is the next episode and how long do you expect the series to last?

[@susmitasavkare719]

Nice one , best for clearing concepts

[@yellapunageswararao9896]

This is very interesting video for all the educated children and it is very useful and important to all the members who are watching this video and by this who not under stood in school or in the college this is the best and simple way to understand to all the students and for teachers also

[@yellapunageswararao9896]

It's very nice

[@estefanyandres7878]

I understood more in 9 minutes than i did in a whole semester

[@remy5680]

justin seagullie Ifkrrr i wish my teacher can learn a bit 😤😤 damn he is so annoying

[@_Crimon]

Just drop your French or German class, physics is it's own damb language

[@copypastecopypaste]

pause 1:47 to feel the pressure

[@yoiang]

Does Pascal's Principle actually happen instantaneously? Conceptually it is the molecules of the object you are applying for to pushing the molecules of the liquid or gas closest to it, which in turn push the molecules next to it, so on and so on.

[@andreagil3602]

Will you be talking about turbulent flows next week? It would be awesome!

[@EclecticMick]

under 10 minutes ✔️ educational ✔️ sponsored ✔️ surely won't be a hit

[@niyahh9350]

Mick Källbacka by 2 secs

[@henriroggeman7267]

Hi honey, Hopefully I'm not repeating a previous message. Archimedes was of Greek origin alright but saying he lived in Greece would be a little misleading. He actually was born and lived in Syracuse on Sicily. That's also the place he ran around naked after his famous discovery. Let's just say Greece today isn't what it used to be back then :-) x

[@atomixfang]

Cheers love!

[@vrajshah8867]

Thanks

[@jacksonm6373]

Oh my God! You might have just saved my as! I mean... how is it possible for you to make it so easy!?

[@straussesisora7969]

2:13 Density × orgy × height you cannot unhear it again