I’m a PhD candidate who has studied fluid mechanics and aerodynamics specifically for around 4 years. And still I don’t think I would have ever thought of such a brilliant experiment. The narrowing of the cross sectional area between the ball increasing the speed due to conservation of mass flow rate. Then this high speed out leading to low pressure, which is lower than the pressure inside the tube with slower air causing suction… just brilliant. I understand it all but that’s pure creativity to devise such a demonstration
@@aicy69 I think the ball is experiencing lift (in all directions) on the surface that comes in contact with the flowing air, resulting in pulling it inwards. This is exactly why the ball is not falling down when the funnel is placed upside-down.
@@Verton_D yes thats why i meant. i meant the net force is downwards on the "ball" towards the funnel. i didnt mean down as in minus y Direction. this is because the air above the ball tries to rush to the area of low pressure and as a result pushes the ball with it
Lift is a really general term. Any force against gravity can be termed as lift, most used in a aerodynamic sense. The net result here is indeed lift, but a lot more is going on here. But to understand it, there is a low pressure in the nozzle where the air is moving faster, when it exits nozzle, it slows down and pressure increases. Now the higher pressure in the cup region, pushes ball into the nozzle. This is the lifting effect
To... Return? It's here as much as it ever has been. Most teaching sucks, some are incredible. Where teachers are allowed by the administration, teachers, and governing boards, it's still very much taking place.
@@Wiziliz tf is wrong with you that that's your reaction to this????? i pity you, seriously. you'll never know true happiness. that saddens me. now go find your safe space and journal about the bad man that verbally assaulted you today
@@daysofendit’s en vogue hating on teaching today, what can you say. Honestly, this same stuff has been written in the 90s about how much it “used to be better” in the 70s etc. 😂 I had great professors 10 years ago in physics, and still know great professors today. Plenty, in fact. 🤷♂️
This has also been used for designing cars for motorsports, the faster the air under the car moves, the more the car gets sucked to the ground, although they call it ground effects.
Applies to how wings work on a car, as well. It's not about the air going above it, but below the wing- where the faster moving air creates a low pressure zone pulling it down.
Intuitive, sure. But the most impressive demonstration of this is the use of the right handheld compressed air jet generator (thank UA-cam for the translation 🙄)... and a screwdriver with a handle of the right shape. ~100 psi and the right angle will suspend the screwdriver in the air stream for as long as there is air flowing.
He sad it needs to be at high speed ( => dependency of velocity), so a train stopping next to you has almost no effect. This means one rushing through will do the trick
I’ve been seeing a lot of these lecture shorts recently and liking them (I’m a physics teacher). I’ve got a ton of them now in a bunch of different topics for ideas that I can use in my classroom. It’s my goal to make interesting demonstrations like that so that my students actually enjoy my class. Unfortunately this topic specifically isn’t taught in the curriculum that I am apart of. However, I also teach an elective physics class where I can teach whatever the fuck I want. Bernoulli’s principle has so many applications and different ways of demonstrating it that I could probably spend 2 weeks alone just doing fun experiments with students
I learned about it in my master's program - Master's of music in vocal performance! I forget the specifics now, but it was utilizing a strong "h" in high voice and the Bernoulli effect on the vocal cords causing optimal core sound production
@@TeeheeTennessy Jazeker hahah. Gelukkig hoor je bij mij niet vaak dat ik nederlands ben, zal wel wat met mn brabantse accent temaken hebben. Volgensmij is het accent dan minder opvallend in het engels ofzo. Of van het vele gamen en youtube kijken in mijn jongere jaren😂
We need more teachers like this in my adulthood definitely In elementary school schools to make us think opening the doors of reasoning and creativity. U tube keep up the good work , I am learning in my old age 70 young.
People should understand how this theorem applies to changing radius inside blood vessels and gives us Poiseuille's law (pressure on a cylindrical tube as a function of the cross sectional area and length. When you combine things Boyles Law (volume inversely varies with pressure), Charles Law (Volume and temperature, or estimating with the Ideal Gas Law, along with material tensile strength, explains why blood pressure is so important. Its why a change in body temperature, causes a change in blood volume, and a change in volume means a change in pressure. Especially relevant to vessels like arteries that have muscles and can get a lot smaller, or a lot bigger to control flow. But when pressure gets higher and the vessels are already enlarged to try and lower pressure, the heart can pump more blood out to veins, which can hold around 2/3 of the bodys blood volume. But then when it cant do that...there is nowhere else for blood volume to go: the heart itself has to expand. The stretching outward of the heart, thins the walls and makes them weaker, but most importantly it stretches the nerves inside the walls of the heart...making them fire inappropriately, which is what a cardiac arrhythmia is: a nerve in the heart firing and contracting the heart when it shouldnt. In addition, the heart has to beat against all that blood (afterload) and just like any muscle, the more it has to work, the bigger it gets. This is when you get heart failure.
Huh suddenly I understand how some of these catheters I use in the lab to suction out clots use the bernoulli principal... I've read it uses it, but this is the mechanism!
If every teacher was as enthusiastic and engaged as this man the world would be like hell!! He literally got fired for sexually assaulting a girl at MIT, use this as a reminder to never judge a book by its cover
@@armandhammer9617I always had great earth sciences, great chemistry and fantastic physics teachers. I had a couple of good math teachers, but fortunately it was a subject that I was able to understand with only a small amount of teaching. I was a voracious reader, but only had 2 great English teachers who made the subject about more than sentence structure, grammar and punctuation. One taught me that English is one of the most fluid of languages, and while the Romance languages are beautiful and Germanic languages have great descriptors, English has the ability to grow and change in some pretty remarkable ways, in my opinion.
This guy's innovative, practical visual experiments, along with his almost child-like excitement makes me want to go back to school and learn more science if I could be in his class!
This is MIT course .yes a rare youtube where academy topic explained as sophisticated point . your could find equation of fluid mechanic starting at Bernoulli. Most of classical book showings that 2 phase , idea phase (like video ) and mathematical symbolisation phase ,2nd phase required knowledge entire mathematic to understand. Well honestly, my university, my high school dont even go further than 1st layer , i heard that not in vietnam, Asia,india, developed country still existed a school like this .such a waste of time !
Tbf to your teachers, you just saw the most interesting minute of a 90 min lecture that consists mostly of math which you would find incredibly tedious and very difficult to understand.
If everyone only had teachers like this the world would be a much much smarter place. Easily one of the best teachers i ever saw. Dont have many of these
This also goes right along with the Venturi effect, as used on older vehicles' carburettors. There is a bowl of gas at the bottom of the carb, and air being sucked in by the cylinders through the carb's barrel, passes over the venturi opening at the middle and bottom of the barrel, draws the fuel up the small tube that starts in the fuel in the bowl. Fuel injection on the other hand needs a high pressure pump!
Hey, so ... fun fact. This is why the barrel of a gun has to be tight at the end. And why when you cut threads in it for ... say a suppressor, and accidentally cause barrel spread at those end threads, it can cause a loss of accuracy. Its not because of the attachment at the end, but because there is a nut that "pulls" the threads toward the end, which spreads the barrel a micro fraction and causes bullet drifting. To fix this, you have to ensure the threaded end of the barrel is never pulled but instead is clamped down. Its super subtle but can really cause a lot of hidden issues at any series distances.
It's actually because the thread alters the end of the bore unevenly. Not because it pulls anything. If it pulled the end of the barrel evenly there would be no effect.
@@bobkoroua at the highest levels of precision, threading the barrel for long range rifles (minimum 1000 yards out to a mile or two), many rifles are threaded for two reasons: suppression and muzzle brake. The method by which these are attached is known to pull and spread the end of the barrel up to several thousandths of an inch. This causes a slight loss of velocity, but more importantly, produces a slight uneven pressure that allows the bullet to be pulled into or follow a rifled groove instead of being supported through the entire length of the barrel. This can be insignificant, or... sometimes, can cause up to several moa's difference for seemingly no reason. If the nut is backed off and everything reapplied without tension on the barrel, then this can fix the issue. Its not well known, but it is a precision rifle issue that exists and which has been known to cause a rifle that shoots .25 moa to suddenly shoot up to even 1.5-2 moa. Check out the wolf precision out of PA stuff on this. They have a patent pending to fix it with a redesign of the end thread attachment point. Unevenly spreading might also be part of it. But thats not how it was described during the analysis i was following of this particular problem.
We've all known Bernoulli's principal since we were kids. A drop in pressure means an increase in temp. If you use your mouth to cool something off, you tighten your lips and blow hard, high pressure, low temp. To warm your hands, mouth open blow slowly. Low pressure, high temp.
No, is totally the oposite... Low presure=low temp and high pressure=High temperature. It is basic knowledg about the cooling cicle. Your example about blowing is based on the wrong aunderstanding of what is happening when you cool down something with your breath....Btw Bernoulli's principal relates speed and pressure of a fluid not presure and temperature.
@@Maximus_sapiensYes. Blowing aids evaporation which releases latent heat of evaporation. Same as wiping your sweaty brow which removes some of the insulating layer of sweat, aiding evaporation.
@@Maximus_sapiens Blowing also removes body heat at the surface and replaces it with cooler air. I'm a retired hydraulic engineer, have used and taught fluid mechanics (including the application of Bernoulli's equation) for more that 40 years, and given expert courtroom testimony on the subject. Z + P/u + aV2/2g. And yes, I understand PV/T and PV=nrT as well. Peace.
Isn't that just the air warming up, rising and escaping over the top of the curtain, causing heavier cooler air at the bottom to be sucked into the showerspace, dragging the curtain along at the bottom, which is also where the curtain has the most freedom to move
I wet the bottom of the curtain and the edge of the inside of the tub so when the curtain sticks to it, it pulls itself taut instead of constantly trying to wrap me up haha
There was a great nuclear physicist Feinman whose extraordinary lectures on gravity, Einstein, relativity h were recorded and drew thousands of curious students. The great ones who understand complex physics are sometimes able to explain things in a simple way. It's a wonderful gift. Feinman was a crazy drummer and also explained to Congress why the Challenger's o rings failed, causing a catastrophic explosion of the capsule on re-entry.
See I wonder if this would work with a different shape than a sphere, I can conceptualize the air wrapping around the ball from both sides holding it in place, but only because of the aero dynamics of the ball. If there were sharpe edges would the effects be the same?
When you get taught by someone who loves what they do its like a passion for them and it makes them feel good trying to teach someone else its like when you see someone who has a collection of things or something they love so much if you start asking them questions they get so happy to explain and they can stay there all day explaining
When she was blowing air inside the velocity inside increases therefore pressure decrease according to Bernoulli's theorem so every object in this universe travel from high pressure to low pressure therefore fall doesn't fall down 👍
There is a very similar experiment that is easy to try at home. If two apples or spheres are suspended so there is a small gap between them, try to force them apart by blowing through the gap between them. The result is that the apples or spheres actually move closer together because the increase in speed through the gap lowers the air pressure.
I wish Ms Gray wasn’t worthless as a science teacher. Having something like this is your youth is an invaluable blessing every child in the world deserves. Just someone who cares is enough
This is one of the best teachers I have ever seen. This guy really has a gift.
Except for the fact that he sexually harassed female students.
@peterzwegat9917 yeah people forget that. Still, great teacher
Professor julius Sumner, greatest physics teacher I've known.
@@peterzwegat9917this man is one of the best at explaining concepts so everyone can easily understand them. There we go.
@@tjweav1331 He also sexually assaulted students. Let's not just brush that under the carpet and let his work overshadow that
I’m a PhD candidate who has studied fluid mechanics and aerodynamics specifically for around 4 years. And still I don’t think I would have ever thought of such a brilliant experiment. The narrowing of the cross sectional area between the ball increasing the speed due to conservation of mass flow rate. Then this high speed out leading to low pressure, which is lower than the pressure inside the tube with slower air causing suction… just brilliant. I understand it all but that’s pure creativity to devise such a demonstration
Blah blah blah... magic. Yall just some magicians that lie about it
It helps for someone who dyscalculic like me.
I think you're doing great.
@@redseaford9426 Honestly these magicians are just making papers and yapping rather than making more magic..
Not to mention, with commonly available and inexpensive items.
Wow. An actual teacher. He’s not teaching the test. He is teaching the lesson
To be fair, it‘s hard teaching the lesson when all the students constantly ask “will this be on the test?”
@@TomJakobW Hard to learn when you HAVE to worry about 3 exams that make up 75% of your grade
😊
And getting mono at the same time putting your mouth on something a college girl did too is wild
Basically the ball is experiencing lift on its surface.
no its not. its experiences a downward force
Basically this doesn't mean anything
@@aicy69 I think the ball is experiencing lift (in all directions) on the surface that comes in contact with the flowing air, resulting in pulling it inwards. This is exactly why the ball is not falling down when the funnel is placed upside-down.
@@Verton_D yes thats why i meant. i meant the net force is downwards on the "ball" towards the funnel. i didnt mean down as in minus y Direction. this is because the air above the ball tries to rush to the area of low pressure and as a result pushes the ball with it
Lift is a really general term. Any force against gravity can be termed as lift, most used in a aerodynamic sense. The net result here is indeed lift, but a lot more is going on here. But to understand it, there is a low pressure in the nozzle where the air is moving faster, when it exits nozzle, it slows down and pressure increases. Now the higher pressure in the cup region, pushes ball into the nozzle. This is the lifting effect
Quality teaching needs to return.
It never went anywhere. This is pretty standard for a level 100s physics class.
To... Return? It's here as much as it ever has been. Most teaching sucks, some are incredible.
Where teachers are allowed by the administration, teachers, and governing boards, it's still very much taking place.
My physic teacher was boring and she made a quiz on this.
The experiment was an MCA with diagrams and I chose the wrong answer.
Lesson learned 🤣
Try actually going to college. You will find amazing educators at all levels. From community colleges to elite universities.
Thing is, this helps nothing with actual physics, just a fun gimmick...
Teachers that know how to demonstrate their teachings with every day objects in fun ways truly are the best kind of teacher, and we need more of them.
Tell me you’re Dutch, without telling me you’re Dutch
Yeah, Dutch accents kinda suck
echt he
I'm not Dutch
@@mikealjohnssonwhy? They sound perfect to me.
I have a goddamn plan Arthur!!!
He still uploads to UA-cam to this day. The man never stopped teaching.
legend
I love teachers/professors so engaging with students
He's probably waaaaay too engaging. He unironically got fired for sexually assaulting one of his students
To blow; one must suck first. -Mos Q. Uito
Okay 😂😂😂
Giggity🥸
Sounds like my wife words!! Suck first, then expect to get a blow 😮
Massimoto Musashi probably
That's an AYO
Glad the 90s still had teachers like this and I was fortunate enough to have had many.
I hope you weren't harrassed
70's and 80's for me. Had many bad and lazy teachers but enough great ones like this guy.
There have always been teachers like this. It's weird how people think there is just WWII, the 80s and today. Humans have been teaching since... ever.
@@Wiziliz tf is wrong with you that that's your reaction to this????? i pity you, seriously. you'll never know true happiness. that saddens me. now go find your safe space and journal about the bad man that verbally assaulted you today
@@daysofendit’s en vogue hating on teaching today, what can you say. Honestly, this same stuff has been written in the 90s about how much it “used to be better” in the 70s etc. 😂
I had great professors 10 years ago in physics, and still know great professors today. Plenty, in fact. 🤷♂️
This has also been used for designing cars for motorsports, the faster the air under the car moves, the more the car gets sucked to the ground, although they call it ground effects.
Applies to how wings work on a car, as well. It's not about the air going above it, but below the wing- where the faster moving air creates a low pressure zone pulling it down.
This is the best intuitive explanation of how air pressure works, that's awesome!
Intuitive, sure. But the most impressive demonstration of this is the use of the right handheld compressed air jet generator (thank UA-cam for the translation 🙄)... and a screwdriver with a handle of the right shape.
~100 psi and the right angle will suspend the screwdriver in the air stream for as long as there is air flowing.
This is the reason you're not suppose to stand close to the train when youre on the platform
You'll get sucked in right? I am learning.
@@demogladawar yes
@demogladawar nope, that is a myth. Watch more mythbusters.
That being said, it is still dangerous to stand next to a railroad track. Don't do it.
@@jedh3721thats not a myth its just the pressure difference created is not that strong to pull you
He sad it needs to be at high speed ( => dependency of velocity), so a train stopping next to you has almost no effect. This means one rushing through will do the trick
Now THAT is a great teacher of physics!
I’ve been seeing a lot of these lecture shorts recently and liking them (I’m a physics teacher). I’ve got a ton of them now in a bunch of different topics for ideas that I can use in my classroom. It’s my goal to make interesting demonstrations like that so that my students actually enjoy my class. Unfortunately this topic specifically isn’t taught in the curriculum that I am apart of. However, I also teach an elective physics class where I can teach whatever the fuck I want. Bernoulli’s principle has so many applications and different ways of demonstrating it that I could probably spend 2 weeks alone just doing fun experiments with students
I learned about it in my master's program - Master's of music in vocal performance! I forget the specifics now, but it was utilizing a strong "h" in high voice and the Bernoulli effect on the vocal cords causing optimal core sound production
When a professor sounds like this, you know you're about to really learn the fundementals of a subject.
He sounds like all my teachers. That flat Dutch accent😂😂
@@mrfarax4944i hate the accent most dutch people have while talking english. But apparently americans thinks its a good accent
@@ReflexBeatsyou must be Dutch then :D ik heb lang genoeg in het buitenland gewoond dat ik eraan gewend ben 😅
@@TeeheeTennessy Jazeker hahah. Gelukkig hoor je bij mij niet vaak dat ik nederlands ben, zal wel wat met mn brabantse accent temaken hebben. Volgensmij is het accent dan minder opvallend in het engels ofzo. Of van het vele gamen en youtube kijken in mijn jongere jaren😂
@@ReflexBeats blijf daar aub
We need more teachers like this in my adulthood definitely
In elementary school schools to make us think opening the doors of reasoning and creativity. U tube keep up the good work , I am learning in my old age 70 young.
People should understand how this theorem applies to changing radius inside blood vessels and gives us Poiseuille's law (pressure on a cylindrical tube as a function of the cross sectional area and length. When you combine things Boyles Law (volume inversely varies with pressure), Charles Law (Volume and temperature, or estimating with the Ideal Gas Law, along with material tensile strength, explains why blood pressure is so important. Its why a change in body temperature, causes a change in blood volume, and a change in volume means a change in pressure. Especially relevant to vessels like arteries that have muscles and can get a lot smaller, or a lot bigger to control flow.
But when pressure gets higher and the vessels are already enlarged to try and lower pressure, the heart can pump more blood out to veins, which can hold around 2/3 of the bodys blood volume. But then when it cant do that...there is nowhere else for blood volume to go: the heart itself has to expand. The stretching outward of the heart, thins the walls and makes them weaker, but most importantly it stretches the nerves inside the walls of the heart...making them fire inappropriately, which is what a cardiac arrhythmia is: a nerve in the heart firing and contracting the heart when it shouldnt.
In addition, the heart has to beat against all that blood (afterload) and just like any muscle, the more it has to work, the bigger it gets. This is when you get heart failure.
Your explanation sounds really good, do you write textbooks or something?
Is that also why prolonged high blood pressure causes enlarged hearts, along with working harder than necessary?
This is the best explanation I have heard on this subject. Thank you for sharing.
That is amazing to know 😊
Did you just explain the “Bends”? 😂😂 cuz I think you were like a sentence away from the Bends and I’m here for it.
This professor is loved so much in India. He is awesome. I watched his most videos available on internet.
That's an indirect kiss👁️👄👁️@Machoman50ta
Stop committing immigration fraud
Yes @Machoman50ta
@Machoman50ta So? Does she have herpes or something?
@Machoman50ta just like when u kisses someone.
Professor definitely knows wise words
Yes like the wise words "I am not a magician" right before he proceeds to trick gullible ppl by proceeding to suck on an inverted funnel!
Does this have to do with his incidents?
Huh suddenly I understand how some of these catheters I use in the lab to suction out clots use the bernoulli principal... I've read it uses it, but this is the mechanism!
He talks like my buddy does when he gets strung out on speed and hallucinogens 😂
Prof said "blow, harder!"
Perfect demonstration of barnoulli's principle ❤
Birnoulli's
Barnelli's
Barnilis
Barnyard's principle.
The principal Barn Owl
teachers who teach with such passion are rare nowadays
Greatest physics teacher in the entire world ❤ I wish I came across your videos back when i was studying physics..
This is the kind of DYNAMIC teacher children need! He’s energy is like a rollercoaster so you have to follow along for the journey! Amazing teacher
You def don’t want this guy around children, but great professor
If every teacher was as enthusiastic and engaged as this man the schools and the world would be a better place!
If every teacher was as enthusiastic and engaged as this man the world would be like hell!! He literally got fired for sexually assaulting a girl at MIT, use this as a reminder to never judge a book by its cover
Stuff like this is why the sciences were always my favorite classes. Never had a bad science teach. Never had a good math or English teacher.
I was the polar opposite!
Never had good English teacher...
Evidently
Same. Math teachers always sucked for me. It's y I can't stand the subject but ADORE the sciences 😂
I had one great math teacher. Mr Wasserman Chaffey high school Ontario CA
@@armandhammer9617I always had great earth sciences, great chemistry and fantastic physics teachers. I had a couple of good math teachers, but fortunately it was a subject that I was able to understand with only a small amount of teaching. I was a voracious reader, but only had 2 great English teachers who made the subject about more than sentence structure, grammar and punctuation. One taught me that English is one of the most fluid of languages, and while the Romance languages are beautiful and Germanic languages have great descriptors, English has the ability to grow and change in some pretty remarkable ways, in my opinion.
This is a great example of science. Bernoulli equation was my favorite in college studying hydraulics.
Yes. Used extensively in hydraulics.
Same here learning aircraft hyd system theory.
This guy's innovative, practical visual experiments, along with his almost child-like excitement makes me want to go back to school and learn more science if I could be in his class!
That's why I love Physics 💯👌
Venturi works on this same principal. Good demo!!
Man this has to be one of the best professors ive ever witnessed. Brilliant
Need physics teacher like him in my school 😢😢
جميع التجاريب الصفية متاحة على الانترنيت .. مشكل الطلبة انهم يريدون الواجد
He sexually harassed his female students unfortunately
This is MIT course .yes a rare youtube where academy topic explained as sophisticated point . your could find equation of fluid mechanic starting at Bernoulli. Most of classical book showings that 2 phase , idea phase (like video ) and mathematical symbolisation phase ,2nd phase required knowledge entire mathematic to understand. Well honestly, my university, my high school dont even go further than 1st layer , i heard that not in vietnam, Asia,india, developed country still existed a school like this .such a waste of time !
@@jamelzahi2085это не проблема студентов , это проблема тех кто хочет их научить .
Tbf to your teachers, you just saw the most interesting minute of a 90 min lecture that consists mostly of math which you would find incredibly tedious and very difficult to understand.
Omg i took 1 sem to fully understand bernoulli and this dude explained it in a 5 second shorts.
If everyone only had teachers like this the world would be a much much smarter place. Easily one of the best teachers i ever saw. Dont have many of these
Not a great guy unfortunately, he sexually harassed his students
This also goes right along with the Venturi effect, as used on older vehicles' carburettors. There is a bowl of gas at the bottom of the carb, and air being sucked in by the cylinders through the carb's barrel, passes over the venturi opening at the middle and bottom of the barrel, draws the fuel up the small tube that starts in the fuel in the bowl. Fuel injection on the other hand needs a high pressure pump!
Is what I thought would be a good case for the whole 'can a fan on my boat blow my own sail' series of debates
@whatthej
That worked for WILE. E. COYOTE with a skateboard.
Sorry, but I couldn't help myself.
Bob. Australia.
Hey, so ... fun fact. This is why the barrel of a gun has to be tight at the end. And why when you cut threads in it for ... say a suppressor, and accidentally cause barrel spread at those end threads, it can cause a loss of accuracy. Its not because of the attachment at the end, but because there is a nut that "pulls" the threads toward the end, which spreads the barrel a micro fraction and causes bullet drifting.
To fix this, you have to ensure the threaded end of the barrel is never pulled but instead is clamped down. Its super subtle but can really cause a lot of hidden issues at any series distances.
It's actually because the thread alters the end of the bore unevenly.
Not because it pulls anything.
If it pulled the end of the barrel evenly there would be no effect.
@@bobkoroua at the highest levels of precision, threading the barrel for long range rifles (minimum 1000 yards out to a mile or two), many rifles are threaded for two reasons: suppression and muzzle brake. The method by which these are attached is known to pull and spread the end of the barrel up to several thousandths of an inch. This causes a slight loss of velocity, but more importantly, produces a slight uneven pressure that allows the bullet to be pulled into or follow a rifled groove instead of being supported through the entire length of the barrel. This can be insignificant, or... sometimes, can cause up to several moa's difference for seemingly no reason. If the nut is backed off and everything reapplied without tension on the barrel, then this can fix the issue.
Its not well known, but it is a precision rifle issue that exists and which has been known to cause a rifle that shoots .25 moa to suddenly shoot up to even 1.5-2 moa. Check out the wolf precision out of PA stuff on this. They have a patent pending to fix it with a redesign of the end thread attachment point.
Unevenly spreading might also be part of it. But thats not how it was described during the analysis i was following of this particular problem.
It's not well known because it's not real.
@@wolfsiejk as i said. Wolf precision out of PA did a small intro on this because they have a patent pending to correct it.
@bookworm8415 have fun with PA, I'm going to stick to my own profession.
this is one of the best explanations of this principle.
Now i understand this intuitively, thanks
5 minutes before this the professor said, "aight now I need a volunteer to blow a ball."
😂😂😂
💀
😂😂😂
"or you might aswell call it sucking"
Don't worry, you will just need to suck a pipe!
I wish I had teachers this passionate about their lessons. He makes it fun and makes you want to learn
we can use it upside down to prevent overfilling gas tanks
Is that an indirect kiss
For a 10 year old watching this video, yes.
hawas ka pujhari hau tu
Only if you're a shy virgin Japanese main character.
What a loser 😂
Why you do hard up?
He has so many amazing lectures, he's one of the best teachers out there.
Took just a few seconds to realize the prof is (originally) Dutch.
yeah he still has a slight accent
We've all known Bernoulli's principal since we were kids. A drop in pressure means an increase in temp. If you use your mouth to cool something off, you tighten your lips and blow hard, high pressure, low temp. To warm your hands, mouth open blow slowly. Low pressure, high temp.
No, is totally the oposite... Low presure=low temp and high pressure=High temperature. It is basic knowledg about the cooling cicle.
Your example about blowing is based on the wrong aunderstanding of what is happening when you cool down something with your breath....Btw Bernoulli's principal relates speed and pressure of a fluid not presure and temperature.
Ok
@@Maximus_sapiensYes. Blowing aids evaporation which releases latent heat of evaporation. Same as wiping your sweaty brow which removes some of the insulating layer of sweat, aiding evaporation.
@@36on22 What you say has nothing to do with what I said...which means you didn't understand it either...
@@Maximus_sapiens Blowing also removes body heat at the surface and replaces it with cooler air. I'm a retired hydraulic engineer, have used and taught fluid mechanics (including the application of Bernoulli's equation) for more that 40 years, and given expert courtroom testimony on the subject. Z + P/u + aV2/2g. And yes, I understand PV/T and PV=nrT as well. Peace.
"Why don't you sit down" "Ew." 😂
That's the way to teach physics and in fact any subject
He is the one who made physics feel like magic. One of my greatest inspiration ❤️ ✨️
This is how the planes can fly
This is the reason the shower curtain tries to give you a hug when you first turn on the water
I thought that was hydraulic venting via the drain creating a pressure differential on side A of the shower curtain relative to side B.
Coanda effect
Isn't that just the air warming up, rising and escaping over the top of the curtain, causing heavier cooler air at the bottom to be sucked into the showerspace, dragging the curtain along at the bottom, which is also where the curtain has the most freedom to move
That’s a convection current.
I wet the bottom of the curtain and the edge of the inside of the tub so when the curtain sticks to it, it pulls itself taut instead of constantly trying to wrap me up haha
I wish I had a professor this good.
Sir walter did her dirty 💀
🚨
“Why don’t you sit down” hilarious
Where are the applause? This guy is a great teacher
it's not a trump rally
The type of teacher we need in all our schools
Physics prof: "I'm not a magician"
Class: "You wish."
saliva and saliva.
I was thinking same 😅
Teachers should be like this ❤ loving what they do and enhancing the students
So this is why my physics class sucked. Teacher only read a book and expected us all to already understand what the book said. I love this man.
If I didn't like this guy so much, I'd make a "this guy blows" joke....
@@SkigoOSRShe sexually harassed his students this guy does blow
Indian flag❤
Maine bhi notice Kiya ☺️☺️☺️
@@AVSTUDIO589not Indian flag...its Just a pipe used to demonstate the buoyancy..... Just happened to be the colour of Indian flag....
🤷🤦
what's with you guys
There was a great nuclear physicist Feinman whose extraordinary lectures on gravity, Einstein, relativity h were recorded and drew thousands of curious students. The great ones who understand complex physics are sometimes able to explain things in a simple way. It's a wonderful gift. Feinman was a crazy drummer and also explained to Congress why the Challenger's o rings failed, causing a catastrophic explosion of the capsule on re-entry.
This is an excellent Professor because of his entertaining aspect of the science, gaining knowledge is a BLAST 🌠
He grapped my attention easily. What a good teacher!
I needed teachers like this. Bravo.
This is brilliant and breaks down physics to a level anyone can understand
See I wonder if this would work with a different shape than a sphere, I can conceptualize the air wrapping around the ball from both sides holding it in place, but only because of the aero dynamics of the ball. If there were sharpe edges would the effects be the same?
The way of teaching that is used today- Exciting~
I need a professor like that in the '70's.
The best types of scientists are these guys, who add in a show as they are teaching you about it
When you get taught by someone who loves what they do its like a passion for them and it makes them feel good trying to teach someone else its like when you see someone who has a collection of things or something they love so much if you start asking them questions they get so happy to explain and they can stay there all day explaining
Wow... Extremely good illustration
An incredible gift to society to be in his classroom
A passionate teacher is an underrated privilege.
Wouldnt it be great if we were still taught this way in schools
I first saw him decades ago on TV. He has a nack for teaching principles that are easily remembered.
J'ai jamais eu de prof pour nous faire des démo des théoremes. C'est un excellent prof qui explique bien sa matière
I remember watching WL's youtube lectures in high school; I learned so much from his lectures
One of my favorite realizations as a kid explains a lot about fluid dynamics, and I've never seen this demonstration.
He made it so easy to grasp the concept
It is amazing, I would’ve applauded you teach
I love physics so much... I had a really good physics professor, I hope I can be as great as this guy one day.
Is there a difference in principle and theorem? I’ve heard it used as the former or are we talking two different things from Bernoulli?
If they taught like this in high school I bet our society would have many more scientists
This is brilliant. My day wasn't wasted learnt something new.
This is probably the second best video I've seen of a professor really telling their student to blow something
The true legend of physics on this planet is Sir Walter Lewin.
i wish all teachers were like him
Love watching this guy. I
Admire brilliant people who are not full of themselves. 👏😊🏴
I don't know why UA-cam has put this man in my playlist but he's brilliant!
Science professors are always the best
When she was blowing air inside the velocity inside increases therefore pressure decrease according to Bernoulli's theorem so every object in this universe travel from high pressure to low pressure therefore fall doesn't fall down 👍
This is why I love physics it's so fun to learn
I just learned a new bar trick. Thanks, Prof Lewin!
Question for understanding, is this sort of like an Eddie current in rapids? Or complete opposite?
"No it's not because I'm tricking you" I love it
There is a very similar experiment that is easy to try at home. If two apples or spheres are suspended so there is a small gap between them, try to force them apart by blowing through the gap between them. The result is that the apples or spheres actually move closer together because the increase in speed through the gap lowers the air pressure.
I would have loved to have had him as a teacher!
Best and most simple demonstration!
I wish Ms Gray wasn’t worthless as a science teacher. Having something like this is your youth is an invaluable blessing every child in the world deserves. Just someone who cares is enough
Ugh I'd love to have classes like this instead of just reading in a book and answering random questions.