Physics4Life
Physics4Life
  • Видео 6
  • Просмотров 1 038 314
The Pressure Paradox #VeritasiumContest #GrandPrizeWinner
Thank you Veritasium! www.veritasium.com/contest
To learn more about the surprising properties of fluids, watch "The Hydrostatic Paradox - Explained!" - ruclips.net/video/6zeHWVUiXoc/видео.html
Wanna know more about our barrel-bursting experiment, including challenges and surprises? Check out "Pascal's Blaising Barrel" - ruclips.net/video/EJHrr21UvY8/видео.html
Animations and editing by Lance Herrington.
Просмотров: 46 844

Видео

Measuring the Speed of Light (DIY version)
Просмотров 7 тыс.4 года назад
Measure the speed of light, without producing or observing any light! 02:40 - Part I (measuring ε_0) 03:18 - Method I.1 06:44 - Method I.2 10:10 - Part II (measuring μ_0) 11:12 - Method II.1 14:13 - Method II.2 Example lab manual: drive.google.com/file/d/1cI3N3LyRAiJHfmf3PhrKrG5heUjxBqyS/view?usp=sharing Lance Herrington: Editing, animation Rick Soden: Lab equipment development Kasey Wagoner: L...
J.J. Thomson’s Groundbreaking Cathode Ray Experiment (DIY Version)
Просмотров 8 тыс.4 года назад
Take your own data from this video to calculate the charge-to-mass ratio of an electron, and compare to the accepted value. Sample lab manual: drive.google.com/open?id=1dXQrQqFVl3mKqLNlNzc73QazEEtqRjul Reconstruction of J.J. Thomson's historic experiment.
Does Vacuum Suck?
Просмотров 35 тыс.5 лет назад
After watching this video, you will never think about drinking out of a straw the same way!
The Hydrostatic Paradox - Explained!
Просмотров 448 тыс.7 лет назад
Check out Part I with the exploding barrel: ruclips.net/video/EJHrr21UvY8/видео.html Does Vacuum Suck? Find out here: ruclips.net/video/c31312iN37Q/видео.html Follow Dr. Katerina Visnjic on Clubhouse to hear and participate in fun discussion about science. Not on Clubhouse? No problem! Use this code to join: www.clubhouse.com/join/event-horizons/tIS8eMwh IG: @physics_4life for updates.
Pascal's Blaising Barrel - Exploding Glass Barrel with Water Pressure
Просмотров 493 тыс.7 лет назад
How can the water pressure created by 1 liter of water burst a 50-liter glass barrel? Watch this video to find out! This is the first time in history (as far as we know!) that this experiment was successfully done, even including Blaise Pascal himself! Part II is here! ruclips.net/video/6zeHWVUiXoc/видео.html Clarification (since a lot of people commented on this): The pressure created inside t...

Комментарии

  • @jeffcarr392
    @jeffcarr392 3 дня назад

    A question, why did the flask not explode as soon as you connected the long pipe ? Did you add a small amount of water at the top just before it exploded ? the video showed you filing the tube slowly discussing bubbles and bouncing etc, I'm just trying to understand when it was all connected ? great video and explanation.

  • @BrownMInc
    @BrownMInc 8 дней назад

    Please, please come back, i know videos take a lot of work to produce with no tangible return for a while, but you're out here fhabging lives!! I was learning about fluid pressure when i found the channel almost a year ago and have loved fluid dynamics since!!

  • @SH-ms3bj
    @SH-ms3bj 12 дней назад

    6:05 Why does it look so cute?? :')

  • @meepmeep1329
    @meepmeep1329 12 дней назад

    Another pressure created by fluids creating pressure is the pressure felt when there is an upcoming exam about the pressure created by fluids creating pressure. (help)

  • @rahulmeena5296
    @rahulmeena5296 13 дней назад

    India ❤

  • @thevikingwarrior
    @thevikingwarrior 15 дней назад

    So 500 years ago, someone doesn't get honoured just because they didn't like conventions. Typical of authoritarian barstoods, who want us to honour them constantly, even though they discriminate and commit fruad (which this situation is, fruad by the government). Barstoods!

  • @jeffkaes4934
    @jeffkaes4934 18 дней назад

    In 1977 at Colorado College i was lucky to take a physics demonstration class by visiting Prof. Julius Sumner Miller, Disney's Physicist. For 2 hours a morning for 3 weeks he did demonstrations and we had to write a notebook with our explanations. It was an amazing class. Dr. Brown from Back to the Future wasn't near as crazy as JSM!

  • @jesalgohil6314
    @jesalgohil6314 20 дней назад

    Varun Pathak Sir's Students

  • @Creativind
    @Creativind 23 дня назад

    You beautiful girl. I want to you girl driend

  • @cavendischw5885
    @cavendischw5885 28 дней назад

    we need more movies

  • @Spacetime_ghost
    @Spacetime_ghost Месяц назад

    Great vid, thank you.

  • @ryetalexreal3934
    @ryetalexreal3934 Месяц назад

    Thank you for the lesson! It's really helpful!

  • @bernardonimassimo314
    @bernardonimassimo314 Месяц назад

    E pensare che tutto nasce da Evangelista Torricelli e il suo barometro ad “argento vivo”. Sarà l’ “horror vacui” a dare tutto a Pascal…

  • @h7opolo
    @h7opolo 2 месяца назад

    nice.

  • @salifti7534
    @salifti7534 2 месяца назад

    Best educational video ever. You should get golden buzzer. 🎉🎉🎉🎉

  • @enriquehernandez4291
    @enriquehernandez4291 3 месяца назад

    Amazing video, helped me a lot. Thank you for sharing

  • @marcovalcavi8918
    @marcovalcavi8918 3 месяца назад

    Hello, I am a high school teacher, I wish I could show this beautiful video to my students with an Italian translation. Machine translation is not satisfactory: can you make an adequate translation available? Thank you very much.

  • @germanbarba
    @germanbarba 3 месяца назад

    If the water jug was big enough to fit a person in it, would that person experience the same effects as a diver at 150ft deep ?

  • @foxlies0106
    @foxlies0106 3 месяца назад

    Dr. Visnjic: Thank you. Great video fun and great learning I thought I knew, and very well presented. That was nice to give credit to Mr. Stevin. I had some minor notes/questions, sincere apologies if they are obvious or wrong. Pls forgive the numbering, its just for me to attempt being organized! 1. The point about all points in a fluid being at same pressure isn't quite right, is it, under gravity, since the fluid has mass, if the vessel is not all at one height, isnt that correct. 2. The pressure in the vessel also wouldnt be equal everywhere, if the fluid were moving, say if the fluid was rotating in the vessel, or convecting. or vessel is in noninertial frame? 3a.. It would be great to understand the role of atmospheric pressure here, especially if it were low, say down here vapor pressure; and if gravity were much higher; 3b. and how the results would be different if the vessels tops were not open to the air. 3c. and Especially,, with the cool barrel experiment, what if the top of the 150 ft tube was sealed, before pressure applied at the barrel. what would happen, at that height,150? feet? I guess all the gases would come out of solution at the top; then the fluid water at top would starts to vaporize in near vacuum.and the plastic tube would shrinks everywhere, and the barrel still explodes? 4. And if I had a wishlist, I would love to understand the relation of static pressures, such as shown shown here, to the vessels' "capacities, like a battery, and the output Impedances" or what an EE like me would call it, (dynamic heads?)say of the different shapes as here and the same initial flluid height height, for instance the martini 630g glass vessel I would say has high capacity, initially at least, and llow output impedance to flow out of its bottom aperture, while the one with the thin top, would have low capacity and high output impedance to flow out of it's bottom aperture? Thanks for your work and cool demos, and any consideration, Best regards,

  • @althomas6045
    @althomas6045 3 месяца назад

    5:00 what was the point of this? if you over pressure the vessel, it will burst. if the vessel is built better, it won't.

  • @EdE077
    @EdE077 3 месяца назад

    Thank you!

  • @kjpg2005
    @kjpg2005 4 месяца назад

    Great demo but this isn’t a paradox, in fact the opposite: it’s exactly what you expect and predict from pushing the physical relationships between the parameters to the extreme. Surprisingly effective demo, like the feather and cannonball falling in a vacuum, not paradoxical.

  • @danilodistefanis5990
    @danilodistefanis5990 4 месяца назад

    What's her name? 👀 She's really good at teaching.

  • @captainamericawhyso5917
    @captainamericawhyso5917 4 месяца назад

    In Pascal's tube, the pressure at the bottom of the tube shouldn't it be Patm + ρgh ? Why is it only ρgh?

  • @knuckle12356
    @knuckle12356 4 месяца назад

    😏 Dutch. Pfff.

  • @douglaswelch3592
    @douglaswelch3592 5 месяцев назад

    If the pressure depends solely on the difference in height (and density and force of gravity), then why don't they build water towers essentially upside down with the large tank on the ground and a small tube extending up the 40 meters or so? That would provide the same difference in height.

    • @Physics4Life
      @Physics4Life 5 месяцев назад

      What a great question! You're right that the pressure at the bottom would be very high because of the high height, but consider what would happen if just one person ran a bath. The water in the small tube would be drained immediately, and the height and pressure would drop very quickly. So you need a huge volume of water all at a high height, to maintain a steadily high pressure even as it is being used. This is essentially conservation of energy... you can't beat the system!

    • @douglaswelch3592
      @douglaswelch3592 5 месяцев назад

      @@Physics4Life Thank you for the answer. That makes perfect sense even if it defies every cell in my brain.

    • @douglaswelch3592
      @douglaswelch3592 5 месяцев назад

      @@Physics4Life Okay, I've given it some more thought. Would I be correct in saying that it wasn't the weight of the water that broke your jar, but rather the potential energy that was added to the water by taking it up 75'? That energy was then distributed through the system by the water as pressure on the interior surfaces. In your experiment, that pressure exceeded the structural integrity of the jar and it broke. If that's correct, then the experiment I'd propose would be to take 2 identical jars, seal a 1/2" tube to the top of one and a 1" tube to the top of the other. Slowly fill the tubes and note the water height at which they each break. I think Pascal says that they should both break at the same height since pressure is only a function of the height. Still counter intuitive because of the greater volume, weight and energy required to get the water in the large tube up to the breaking point, but perhaps offset by the greater surface area of the larger tube system?

    • @douglaswelch3592
      @douglaswelch3592 4 месяца назад

      @@Physics4Life Your video has been stuck in my head for 3 days now. So there is only one force at play here, gravity which is only in one direction, down. That's why only the addition of height adds potential energy to the system. That energy is expressed as pressure and because we are dealing with a liquid or gas, that pressure is exerted on all interior surfaces. The relationship between the pressure and the force is P=F/A, so yes, if you double the area it is exactly offset by cutting the P in half given that F is constant. It was your conservation of energy comment that cracked the code for me. Thank you for a very thought provoking video.

  • @specialrelativity8222
    @specialrelativity8222 5 месяцев назад

    please upload more❤❤

  • @AMJ.JAGUAR
    @AMJ.JAGUAR 5 месяцев назад

    Such a great video! Thank you!

  • @pierrecarpentier7244
    @pierrecarpentier7244 5 месяцев назад

    Thanks for your work

  • @lokeshgnanasekar
    @lokeshgnanasekar 5 месяцев назад

    Thanks professor Katrina, I never seen such beautiful professor giving very simple yet clear explanation. I wish we could have applied real time calculations as well.

  • @mohammadhashem1999
    @mohammadhashem1999 5 месяцев назад

    What is Happen my english is not so good to Understand that

  • @xuanatngo4111
    @xuanatngo4111 5 месяцев назад

    A great experiment, showing us the magic that physics brings

  • @kwccoin3115
    @kwccoin3115 5 месяцев назад

    What is the mystery is what is the weight of the container especially if the bottom of the container is a bit flat. Does it increase based on the height of the water and not on the volume of the water i.e. the small volume can "weight" a lot ... in spite of only a small amount of water was "added".

  • @DisisSid001
    @DisisSid001 5 месяцев назад

    Honestly, the explanations was soo good. Although I'm just 15, I was able to understand it completely. I'm glad I'm a able to find your yt channel. Hope you become a million subscriber channel in the future and share your knowledge with many. Thanks a lot!

  • @DisisSid001
    @DisisSid001 5 месяцев назад

    Nah giesel any day 🔥🗣🗣💯

  • @A.Hisham86
    @A.Hisham86 6 месяцев назад

    Your videos are amazing! Keep up !

  • @samuhikshastr
    @samuhikshastr 6 месяцев назад

    This will be exactly the same as the power to shift from a smaller gear to a larger gear. This rule is also according to Pasal rule यह बिल्कुल छोटे गियर से बड़े गियर में शिफ्ट करने की शक्ति के समान होगा। यह नियम भी पासल नियम के अनुसार है

    • @samuhikshastr
      @samuhikshastr 6 месяцев назад

      It flows through the fluid and the hydraulic pump works to lift the bigger piston (higher load) from the smaller piston. It can get more power by rotating a larger gear than a smaller gear. यह द्रव के माध्यम से बहता है और हाइड्रोलिक पंप छोटे पिस्टन से बड़े पिस्टन (उच्च भार) को उठाने का काम करता है। यह छोटे गियर की तुलना में बड़े गियर को घुमाकर अधिक शक्ति प्राप्त कर सकता है।

  • @ivarun8kkk
    @ivarun8kkk 6 месяцев назад

    Varun Patak sir student's Give attendance here....

  • @BrownMInc
    @BrownMInc 6 месяцев назад

    Hooollyyy this deserves more views!! Algorithm pls boost! This is by far one of the best academic-education videos I've seen. I've long believed that it's the practical demonstrations most students need in order to truly appreciate the sciences. Thank you

  • @syedsalikali2428
    @syedsalikali2428 7 месяцев назад

    Cool

  • @TravisTellsTruths
    @TravisTellsTruths 7 месяцев назад

    I have so much to say. This was incredible. I'm possibly going to explode from the pressure I'm under 😅 i need to ask you: what is the electrical equivalent to this hydraulic press concept?

  • @user-vl2bc3mm4f
    @user-vl2bc3mm4f 7 месяцев назад

    While applying pressure before barrel bursts, it seems that pipe at other end was closed by injection. The pressure on the barrel was solely atmospheric (open one) or it was aided by a closed pipe at syringe attached at other end?

  • @msg308
    @msg308 7 месяцев назад

    Another way to think about pressure depending on only the height of the water is to go to the edge of a lake, dig a small hole, make a channel connecting the two that's only a few centimeters deep, and then try damming that channel with your hand. The force of the water you're trying to hold back will feel negligible, even though there's a massive amount of water on the lake's side.

    • @BrownMInc
      @BrownMInc 6 месяцев назад

      holy this is a GREAT analogy for dams. Thanks for sharing!

  • @vijayalakshmisrinivasan6028
    @vijayalakshmisrinivasan6028 8 месяцев назад

    Very useful thank you

  • @jffry24
    @jffry24 8 месяцев назад

    You never told us the answer of the pressure in the tilted container

  • @erikev
    @erikev 8 месяцев назад

    This is no paradox. This is just obvious.

  • @Cez11vfx_
    @Cez11vfx_ 8 месяцев назад

    Good video

  • @gardenlove7750
    @gardenlove7750 8 месяцев назад

    in the future and for repeat experiments - fill the vessel while the skinny tube is at ground level to act as an air bleed and when the overflow fluid fills the tube (known nominal internal volume) - then hoist the tube

  • @AnteCvitan
    @AnteCvitan 8 месяцев назад

    great video

  • @wbeaty
    @wbeaty 8 месяцев назад

    I pre-filled my hose, then slowly lifted it out of the bucket, hiking up the spiral stairwell to the 4th floor. (But that was just to create a "tygon-tubing barometer."