Fluids in Motion: Crash Course Physics #15

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  • เผยแพร่เมื่อ 13 ก.ค. 2016
  • Today, we continue our exploration of fluids and fluid dynamics. How do fluids act when they're in motion? How does pressure in different places change water flow? And what is one of the motion annoying things about filming outside on a nice day? I'll give you a hint on that last one... it's lawnmowers.
    In this episode of Crash Course Physics, Shini talks to us about how fluids in motion are really, really, REALLY powerful things.
    --
    Produced in collaboration with PBS Digital Studios: / pbsdigitalstudios
    --
    Want to find Crash Course elsewhere on the internet?
    Facebook - / youtubecrashc. .
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    CC Kids: / crashcoursekids

ความคิดเห็น • 582

  • @crashcourse
    @crashcourse  ปีที่แล้ว +18

    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

  • @ceasarnoris1543
    @ceasarnoris1543 ปีที่แล้ว +141

    I am a chemical engineer and I can assure she just summarised 10 hole chapter of Fluid mechanics in one video, just like she was baking a cake ......Thankyou

  • @RainierKine
    @RainierKine 7 ปีที่แล้ว +418

    while figuring out the velocity of my water spout, I drowned my garden.

  • @gingsSon
    @gingsSon 8 ปีที่แล้ว +369

    Half of my fluid dynamics course in under 10 mins!

  • @flyingtoaster
    @flyingtoaster 8 ปีที่แล้ว +96

    I'm so glad you produced these latest episodes on fluids. It was overlooked in my common core physics class in engineering school and it's obvious that the host is deep in her element.

  • @tobangafeufeu
    @tobangafeufeu 8 ปีที่แล้ว +444

    I wish this video was made a month earlier, I learned the exact same in college. Great video, this is some solid university stuff

    • @harrisonharris6988
      @harrisonharris6988 8 ปีที่แล้ว +54

      "solid". Ba dum tsssss....

    • @TheRealE.B.
      @TheRealE.B. 8 ปีที่แล้ว +17

      Watching the entirety of Crash Course has long been more valuable than some college degrees (From a learning standpoint. Good luck putting "TH-cam" on the Education section of your resume.). This is the future of education. It's much cheaper than than paying a college professor for every 20 students and maintaining a luxury 24/7 young adult resort.
      I've been mostly ignoring the physics videos, because I studied all of this stuff at university for my engineering degree.
      Engineering degrees are very overrated, by the way. I've been unemployed about 25% of the time since I graduated, and I was only making $40k a year with no benefits the rest of the time (yes, at an actual engineering job). Saw a job posting today asking for an engineering degree (and then some) offering *up to* $15/hr. That American Dream stuff? Bullshit. You may as well get your education from TH-cam.

    • @pedrorvd1
      @pedrorvd1 8 ปีที่แล้ว +22

      i'm learning that in high school

    • @tobangafeufeu
      @tobangafeufeu 7 ปีที่แล้ว +2

      leadfoot9x good luck mate. I still have some years ahead of me

    • @nuclearwarfareaw
      @nuclearwarfareaw 7 ปีที่แล้ว +9

      I'm learning in elementary school grade 2

  • @divya6050
    @divya6050 7 ปีที่แล้ว +144

    I'm so glad for this video, I have a physics test tomorrow and this just completely explained a huge intimidating chapter in 10 mins...thank you so much!!

    • @jarednitta1934
      @jarednitta1934 7 ปีที่แล้ว +2

      college stuff??

    • @deekshas3936
      @deekshas3936 4 ปีที่แล้ว +4

      Can totally relate. My textbook is so cluttered with info that I don't know what to study and what not to.

  • @yeknomican
    @yeknomican 6 ปีที่แล้ว +35

    Crash Course Physics vids are amazing and really underappreciated. I guess they work best when you're re-learning it or have some frame of reference, but they really tackled some deep concepts in quite possibly the most graspable and conceptually sound way possible for such a short format.

  • @fighterfas
    @fighterfas 8 ปีที่แล้ว +19

    This was excellent, I'm a mechanical engineer and I was curious as to how you'd explain this, you did it brilliantly. A huge well done to the whole team I wish you guys all the success for your hard work!

  • @Sureshsadanandan
    @Sureshsadanandan 5 ปีที่แล้ว +96

    Physics should be taught this way 😍

    • @Sureshsadanandan
      @Sureshsadanandan 5 ปีที่แล้ว +4

      Yessssss!!!!!😄😄😄

    • @ashwinbabu6837
      @ashwinbabu6837 4 ปีที่แล้ว +26

      Wait whut..? You replied yourself my man ?

  • @Redemmaw
    @Redemmaw 7 ปีที่แล้ว +508

    Imagine listening to audiobooks read by this woman.... ~heaven~

    • @marekjanik9962
      @marekjanik9962 5 ปีที่แล้ว +24

      You are joking, right? Her accent is irritating

    • @alext9067
      @alext9067 5 ปีที่แล้ว +12

      @@marekjanik9962 I really can't stand it. And what's the rush with all these numbers all over the screen? This is supposed to teach young people?

    • @robertowisconetti2732
      @robertowisconetti2732 4 ปีที่แล้ว +1

      @@marekjanik9962 are u kidding me ryt now

    • @marekjanik9962
      @marekjanik9962 4 ปีที่แล้ว +3

      @@robertowisconetti2732 There is a reason why every music band on this planet sings with an american accent. If you only weren't this uneducated, you would understand

    • @robertowisconetti2732
      @robertowisconetti2732 4 ปีที่แล้ว +23

      Marek Janik British accent is the most pure form of english. They made english lol

  • @geniusmp2001
    @geniusmp2001 7 ปีที่แล้ว +148

    I can't help but think of the What If entry for "What would happen if one tried to funnel Niagara Falls through a straw?"
    "The flow rate over Niagara Falls is at least 100,000 cubic feet per second, which is actually mandated by law...A typical straw is about 7mm in diameter. To find out how fast the water flows, we just divide the flow rate by that area. If the result is greater than the speed of sound, our flow will probably be choked, which will lead to problems.
    (Math here)
    Apparently, our water will be going one-quarter of the speed of light."

    • @vampyricon7026
      @vampyricon7026 7 ปีที่แล้ว

      +

    • @jazethegreat3944
      @jazethegreat3944 6 ปีที่แล้ว +10

      Assuming it was confined yes

    • @TheTroubleshooter
      @TheTroubleshooter 6 ปีที่แล้ว +3

      were you reading a haribo gummy bear review?

    • @kun490
      @kun490 6 ปีที่แล้ว +2

      It'll overflow through sides.

    • @joshlete
      @joshlete 6 ปีที่แล้ว +27

      He is assuming all the water is going through the straw and that the walls of the straw can hold the pressure.

  • @michaelolson7626
    @michaelolson7626 7 ปีที่แล้ว +597

    Came to learn about physics, accidentally fell in love, also learned about physics. Good day.

    • @arthikalexander316
      @arthikalexander316 5 ปีที่แล้ว +11

      A good day indeed

    • @zeusjanseng.lujares7428
      @zeusjanseng.lujares7428 4 ปีที่แล้ว +32

      She's got such attractive brown eyes hahaha

    • @AethernaLuxen
      @AethernaLuxen 4 ปีที่แล้ว +9

      @Zeus Jansen G. Lujares
      Out of all things to compliment, I don't think eyebrows could impress anyone

    • @zachass3724
      @zachass3724 4 ปีที่แล้ว +17

      I was just about to write the very same thing. It's like a school boy crush totally void of lust.

    • @joshuaerbe289
      @joshuaerbe289 4 ปีที่แล้ว +18

      Luxurious 03 what do you mean? He complimented her eyes not her eyebrows?

  • @Dusan93etr
    @Dusan93etr 7 ปีที่แล้ว +14

    I love this part, i have some exams about fluids, and it's realy hard, so this is of great help. :)

  • @TrevorSchmahl
    @TrevorSchmahl 7 ปีที่แล้ว +17

    The Feynman Lectures made it to the foreground, nice!

  • @julietmag7436
    @julietmag7436 5 ปีที่แล้ว +2

    Thank you so much, people who are behind the channel are angels, because of you I’m getting good grades in physics

  • @dkh321
    @dkh321 4 ปีที่แล้ว +1

    Amazing way of teaching and making it beautiful to see, listen and understand. Thank you so much !

  • @mrluna4297
    @mrluna4297 7 ปีที่แล้ว +6

    These videos are saving me from first year engineering. Hope you also do a series on engineering materials. :)

  • @lisakawa7486
    @lisakawa7486 6 ปีที่แล้ว +2

    I just love this channel that’s all i can say

  • @kant12
    @kant12 8 ปีที่แล้ว +8

    Crash Course Physics is the best Crash Course. Just thought I'd mention that.

  • @xavierlampkin8203
    @xavierlampkin8203 7 ปีที่แล้ว

    Absolutely Fantastic Video

  • @ghostmailgg
    @ghostmailgg 7 ปีที่แล้ว +2

    I love this series

  • @slengoslengaw8510
    @slengoslengaw8510 6 ปีที่แล้ว

    Very informative and beautifully explained. Thank you

  • @ramuannam7020
    @ramuannam7020 5 ปีที่แล้ว +1

    Awesome explaination.....👏👏

  • @Abdoolkasim
    @Abdoolkasim 4 ปีที่แล้ว

    Simply it is cool! Nice presentation! Thanks!

  • @TruongNguyen-bl4vd
    @TruongNguyen-bl4vd 6 ปีที่แล้ว +1

    currently studying fluild mechanics this semester. Fun yet very challenging.

  • @idaiaelwing4063
    @idaiaelwing4063 4 ปีที่แล้ว

    That's incredible work ! Thank you so much !

  • @Elymichie
    @Elymichie 8 ปีที่แล้ว

    the last example was exactly what I needed to help me on another problem I am working on! and this video was just uploaded!

  • @bintraza7679
    @bintraza7679 4 ปีที่แล้ว +1

    You are one of the most wonderful physics teacher i have ever known☺

  • @lwazithusi773
    @lwazithusi773 ปีที่แล้ว +1

    i have to thank you, thank you for making this video it really was helpful now i am gonna watch your videos your just straight forward u made this thing looks simple and general

  • @amandaluise92
    @amandaluise92 8 ปีที่แล้ว +1

    That was awesome! :) Thank you for putting this amazing content up.

  • @royjasonhourany5514
    @royjasonhourany5514 8 ปีที่แล้ว +1

    amazing seriesss

  • @loshithasahan7164
    @loshithasahan7164 6 ปีที่แล้ว

    Huge theories.Simply & creatively.I love it.THANK YOU CRASH CAUSE....

  • @verdatum
    @verdatum 8 ปีที่แล้ว +2

    That was so good!! I want more fluid episodes!! I once built a laminar-flow fountain for a maker-event, and despite having lots of Intro physics experience, Thanks to transfering colleges, I never managed to have a course that cover hydrodynamics; so I had to learn everything from a dry textbook. This episode made a lot of that stuff much friendlier. I want more! Don't go to boring old harmonic-motion next (Yeah, I know this is all recorded weeks in advance, and planned way earlier....but....Y'all know this series needs a 2nd season.)

  • @midnightmemories3904
    @midnightmemories3904 5 ปีที่แล้ว

    Thank u for this amazing video!

  • @deekshas3936
    @deekshas3936 4 ปีที่แล้ว +1

    Thaaaanks crash course! My textbook has a lot of unnecessary information and there is very less time to read through and filter it. This was really really helpful.

  • @mkb6418
    @mkb6418 7 ปีที่แล้ว +2

    Very interesting. We were never taught these things in school. I learnt something new in this episode.

  • @vinodtalks8099
    @vinodtalks8099 6 ปีที่แล้ว

    It's amazing u coverd total physics within 10 minutes ..hats up to u

  • @AtomicusPrime
    @AtomicusPrime 7 ปีที่แล้ว

    Please keep up the great work. Terrific video!

  • @abdulrahmanhazim6090
    @abdulrahmanhazim6090 11 หลายเดือนก่อน

    Honestly I love this channel

  • @jngf100
    @jngf100 6 ปีที่แล้ว

    Very informative and enjoyable to watch.

  • @Thenightbelongs2you
    @Thenightbelongs2you 5 ปีที่แล้ว +1

    Thanks for putting knowledge in my brain

  • @ElmoPlaysStuffHD
    @ElmoPlaysStuffHD 6 ปีที่แล้ว

    THANKS FOR MAKING THIS VIDEO !!

  • @jusjaisinghani908
    @jusjaisinghani908 8 ปีที่แล้ว

    Cant wait for next video of SHM great work crashcourse keep it up

  • @AshishGupta-dj3sq
    @AshishGupta-dj3sq 6 ปีที่แล้ว

    Thank u and Great explanation !!

  • @stressedout3649
    @stressedout3649 8 ปีที่แล้ว +16

    deserves more recognition.

  • @mohsensafa
    @mohsensafa 4 ปีที่แล้ว

    nice, i loved it! keep on your excellent work please.

  • @RajeevKumar-tb5dj
    @RajeevKumar-tb5dj 6 ปีที่แล้ว +2

    Thankyou so much!!

  • @InstigationMex95
    @InstigationMex95 7 ปีที่แล้ว

    This is amazing.

  • @sergiolucas38
    @sergiolucas38 ปีที่แล้ว

    excellent video, thanks :)

  • @TheJayman213
    @TheJayman213 7 ปีที่แล้ว

    This was very well explained.

  • @isabelleyap1779
    @isabelleyap1779 4 ปีที่แล้ว

    Hi, this video on 'Fluids in Motion' was very helpful. I was wondering if you have a video on 'Conservation of Momentum', talking about Control Volumes, the Development of Momentum Principle and Momentum-Flux Correction factor.

  • @premsha9932
    @premsha9932 4 ปีที่แล้ว

    Wow....... that's so helpful , Thanks

  • @aniketkumbharikar6086
    @aniketkumbharikar6086 4 ปีที่แล้ว

    I am loving crash course....U r explaining everything very beautifully....Thanks ....!!!!!!!!😊😊😊😊😊😊😊

  • @MemeNiche
    @MemeNiche 6 ปีที่แล้ว

    this was really helpful thankuuu so much. I got it all

  • @lesnerchai2186
    @lesnerchai2186 10 วันที่ผ่านมา

    Well explained 🎉🎉🎉

  • @JackKnightPlays
    @JackKnightPlays 5 ปีที่แล้ว +1

    I've only seen 3 minutes. You are an awesome teacher.

  • @shibunagendran4508
    @shibunagendran4508 4 ปีที่แล้ว

    Great video

  • @kayceegemaol8727
    @kayceegemaol8727 4 ปีที่แล้ว

    This summed up an entire semester of fluid mechanics. Great video!

  • @HalfHotHalfCold
    @HalfHotHalfCold 5 ปีที่แล้ว

    Great video!

  • @SheikhEddy
    @SheikhEddy 8 ปีที่แล้ว +27

    I think that this video has got to be one of the clearest in the series.

  • @rajendratrivedi2374
    @rajendratrivedi2374 7 ปีที่แล้ว

    Thank you so much guys you help me to finish my chapter in just 20 minutes

  • @accumulator4825
    @accumulator4825 7 ปีที่แล้ว

    awesome vid!

  • @rubixloverful
    @rubixloverful 5 ปีที่แล้ว

    great content!

  • @infinityamitpandey
    @infinityamitpandey ปีที่แล้ว

    Good job 😊

  • @FashionRoadman
    @FashionRoadman 6 ปีที่แล้ว

    This is so helpful for my course

  • @kun490
    @kun490 6 ปีที่แล้ว

    Amazing!

  • @eyosiyasyohannis3790
    @eyosiyasyohannis3790 4 ปีที่แล้ว

    everything on single single tutorial about fluid mechanics thank u..

  • @StephenGillie
    @StephenGillie 6 ปีที่แล้ว

    What's true for water here, is also true for the air ducts ventilating your office or home. HVAC workers (usually) take great care to make sure the air duct's geometry remains constant through the entire duct. CAD programs are frequently used to help engineer consistent flow, and stamp out the parts on a plasma or laser CAM. (Source - Reconnected a Lockformer Vulkan to a PC and cut ducts for a welding shop during the recession).

  • @user-mr7pd8fe9r
    @user-mr7pd8fe9r 6 ปีที่แล้ว

    it's amazing thanks

  • @webcypher6829
    @webcypher6829 7 ปีที่แล้ว +1

    Damn even the ad for this video was smart and nerdy, this is my new favourite channel!

  • @ArwaHuzaifaYounus
    @ArwaHuzaifaYounus 5 หลายเดือนก่อน

    I LOVE U CRASH COURSE!!!!

  • @trinibro2010
    @trinibro2010 8 ปีที่แล้ว +9

    Love this Channel and this particular series but I'm interested to know when you guys are going to do electricity and electrical devices.

    • @crashcourse
      @crashcourse  7 ปีที่แล้ว +11

      We just started filming that stuff. Moved in to a new studio and tackled 3-4 episodes of that two weeks ago. Those episodes should start rolling out in September, I think.
      - Nick J.

  • @grndragon7777777
    @grndragon7777777 8 ปีที่แล้ว +2

    Thank you

  • @florentinosanchez3969
    @florentinosanchez3969 ปีที่แล้ว

    Really nice video

  • @namitanene3531
    @namitanene3531 6 ปีที่แล้ว

    Thank you for helping me

  • @roan33
    @roan33 8 ปีที่แล้ว +10

    my brain is broken

  • @JjoshD
    @JjoshD 8 ปีที่แล้ว

    I don't know how you knew, but this is just perfect timing! I'm looking to collect rainwater from the roof and use it to water the grass in the dry season. all the research I've done online and this has been a major help. thank you!

  • @josephphan8853
    @josephphan8853 7 ปีที่แล้ว +2

    Thank you, crash course physics.

  • @bhrisvfyapn
    @bhrisvfyapn 7 ปีที่แล้ว

    There are two things Shini explains nicely but without showing connection:
    one is relation between cross section area and velocity in situation when there is active flow inside pipe
    second is relation between pressure and output velocity of flow.
    In other words that cool visual example with garden hose can be somehow explaned with #1 but if you try to calculate velocity of stream you might have hard time doing it with #2

  • @paurushgargtube
    @paurushgargtube 7 ปีที่แล้ว

    awesome mam!

  • @nathnaellegesse620
    @nathnaellegesse620 4 ปีที่แล้ว

    soo nice

  • @SunriseFireberry
    @SunriseFireberry 8 ปีที่แล้ว +31

    Are you people gonna do linguistics?

    • @TanookiOshawott64
      @TanookiOshawott64 7 ปีที่แล้ว +2

      PLEASE I would love another good linguistics channel. That would be terrific!

    • @SunriseFireberry
      @SunriseFireberry 7 ปีที่แล้ว

      They COULD do lots.
      Literary Theory
      Semiotics
      Shakespeare
      Music
      Geology
      Engineering
      And on it goes. Ever more specialized. They could be busy in 2026 cranking out new courses.

    • @abbygus1
      @abbygus1 7 ปีที่แล้ว

      +TimeAndChance I truly hope so. Best channel on TH-cam, easily. Passed some APs with this.

    • @ashtarbalynestjar8000
      @ashtarbalynestjar8000 7 ปีที่แล้ว +1

      Possibly, but John Green tends to be a prescriptivist, so I'm not really sure how useful a Crash Course Linguistics would be...

  • @paurushgargtube
    @paurushgargtube 5 ปีที่แล้ว

    Thanks. Awesome.

  • @gappythegoat5397
    @gappythegoat5397 4 ปีที่แล้ว

    U helped me with homework during the lockdown 2020
    Corona

  • @samantha-tw3jl
    @samantha-tw3jl 7 ปีที่แล้ว

    awesome!

  • @simonwhite4330
    @simonwhite4330 4 ปีที่แล้ว

    Wow, great presenter! if only a little fast I had to watch the video a few times to get all the information and equations down. I never knew fluid dynamics could be so interesting.

  • @maneshms2541
    @maneshms2541 5 ปีที่แล้ว

    Thanks!!

  • @ejazahmad2544
    @ejazahmad2544 5 ปีที่แล้ว

    Good teacher

  • @vishwajeetsingh5166
    @vishwajeetsingh5166 6 ปีที่แล้ว

    thanks a lot for help

  • @dummmylog3070
    @dummmylog3070 5 ปีที่แล้ว

    So tough!!

  • @TheShovon123
    @TheShovon123 4 ปีที่แล้ว

    You explain things soo easily

    • @Observ45er
      @Observ45er 4 ปีที่แล้ว

      Too bad it is incorrect. See my recent comments.

  • @njabulomahlalela2912
    @njabulomahlalela2912 6 ปีที่แล้ว

    You're the best!!! 😘

  • @shrutiray3452
    @shrutiray3452 6 ปีที่แล้ว

    you are amazing

  • @Rose-wn7tn
    @Rose-wn7tn ปีที่แล้ว

    FINALLY thank you for explaining much much better than my 2nd year lecturer why we cancel things in bernoulli

  • @edwardranzenbach4319
    @edwardranzenbach4319 4 ปีที่แล้ว

    Great video. I was looking for information about what happens to liquids with multiple branch outflows, given that some outflows may have different conduit diameters and resistances. I think I understand that the total volume (flow) per time always be the same but will the fluid take the path of least resistance leading some branches with less outflow? I suspect yes. Can someone provide me the equations to prove this?

  • @bottleofwater1675
    @bottleofwater1675 4 ปีที่แล้ว

    She just makes me want to learn this.

  • @gerardoixehuatl6776
    @gerardoixehuatl6776 8 ปีที่แล้ว +1

    awesome

  • @markburchell9060
    @markburchell9060 7 ปีที่แล้ว +1

    Now I want to see one on Navier-Stokes equation and CFD

  • @JatSingh
    @JatSingh 7 ปีที่แล้ว +4

    The fact that you just made a 10 minute video about one of the most difficult courses I have ever taken doesn't make me feel very good :(