Kudos to this man for going out of his way to present something that his students will remember for the rest of their lives.

I was gonna say it's not really anything special, and that I remember a teacher doing something almost exactly the same when I was in middle school. And then I realized I remember almost nothing about middle school, but I do remember the teacher doing this experiment and the basic principles behind it. So I guess you got a point.

Facts I don’t even remember who taught me how to count but I’ll remember this

Ao3

They'll forget it by the end of class.

@WeNeedALadder im a middle schooler and my teacher just did this thing like today

We NEED more teachers like this. It makes the students actually WANT to learn. Instead of just making them stare at a piece of paper to remember things then forget them after their finals, it makes them want to learn about the topic, as what he did here was actually interesting.

we want more teachers who put their lives on the line yea

@FromAnAltReality Are you being facetious? Probably.

You still need to memorize the various formulas, but at least you know what they actually are

It’s up to the kid if they want to learn. But yeah blame the teacher if your kid is a numbskull who has no future

@kojja wait till you find out others can influence your decision. If the teacher is shit ur not going to want to learn what he teaches but if its a good teacher its going to be your fav thing in school

watching this years later and understanding every concept and formula is crazy to me, I'm glad he does visual examples I wish more physics teachers were like this instead of just doing a bunch of notes and then word problems

https://www.youtube.com/shorts/esyw1xihCWk

@Lectures by Walter Lewin. They will make you ♥ Physics. Hello sir, I'm a student of 10th grade and I'm in love with your lectures, so much so that I can't stop watching advanced concepts. I can't believe I'm able to understand college level topics while being in highschool ❤❤

I absolutely love the squeal that is heard at the end of the presentation!!! Usually it’s a bit embarrassing and frowned upon to make noise during a teachers lecture, but it goes to show the true engagement you have made with your example of physics!! She just couldn’t help but make an anxious noise as you put your body on the line, and the whole room erupts with laughter because of it! Truly a presentation they will never forget, and from that, you’ve made an amazing difference in the world by making us smarter. ❤

https://apod.nasa.gov/apod/ap230328.html

Or that they didn’t wanna see someone’s face splattered .. w all do respect professor

@Lectures by Walter Lewin. They will make you ♥ Physics. umm, why did you posted that?

or aybe she was worried she was gonna see his face get smashed in :/

​@Lectures by Walter Lewin. They will make you ♥ Physics. Thanks I guess?

'' This man risked his life for PHYSICS '' You’re probably the best physics teacher out there. There should always be a way to learn something new in a fun way! ✨

Wow! This physics teacher's enthusiasm and dedication to his students are truly inspiring. It's wonderful to see a teacher who goes above and beyond to make learning a memorable experience. By incorporating visual examples and engaging demonstrations, he not only imparts knowledge but also instills a genuine love for the subject. Teachers like him make a significant difference in the lives of their students and inspire them to pursue their passions. Kudos to this exceptional educator for his remarkable teaching methods and his commitment to making a positive impact on his students' lives.

I watched his physics lecture series back in 2008 when I worked in restaurants to save up for university. Over a decade later, I'm now a senior engineer in a multinational consultancy. Thanks for the inspiration and wisdom!!

Epic! Nice you got what you wanted!

🤛👍😊

good for you! That's amazing!

no big deal tho

@Js B it is

It's amazing to see a professor like Lewin who is so passionate about teaching. His enthusiasm is evident in every class and you can see the student's engagement as a result. This type of dedication is rarely seen in college professors at my college. Unfortunately, most of them don't seem to care about their students or put any effort into preparing or delivering lectures. It's a shame that students have to suffer because of this apathy. I hope that Lewin's example will inspire more professors and teachers to strive to reach his level of commitment to teaching.

These are the kinds of lessons that stick with people. Well done Professor!

👍

there are only a few teachers from my life that I remember. You sir would've been one of them. Its teachers like you that inspire millions of bright young minds. Thank you for doing what you do and for bringing passion into it.

The man, the myth, the legend.. I was quite thrilled to watch it even though video is uploaded 7 years before.. Couldn't imagine from where you brought so much courage to actually perform it.. Lots of thank you for making us love in Physics... I know you're reading this sir.. Thank you kind sir

The world needs more teachers like him 💕

I agree

“Physics works, and I’m still alive!” This is the second time I’ve watched this video and I love it. That professor has balls.

Literally! One almost crushed him. 😃😃😃

@See it or Flick it. tmi dude 🤦🏻‍♀️

There was once an engineering professor who would throw himself at the safety glass windows in a very tall building to demonstrate that it won't crack or shatter because it's specially designed to withstand much more significant forces. This worked every time but once. The pane of glass remained perfectly intact but popped from its case.

@emmi luuv how tf is that a tmi

Religious people making false predictions: Is it possible to learn this power?

I love your enthusiasm, a fundamental concept taught in a fun and unforgettable way. Wish the world of academia was full of spirited educators like you from top to bottom, what a wonderful world that would be!

This is so darn epic, I wish there were more teachers like him. He would have made school very interesting.

I studied physics with all my heart to give my pre-med exam. Now I'm a medical student. But I still like to watch sir Walter Lewis ❤

This is not teaching as we used to know it, this is inspiring his students. Excellent.

Man I just wish I could have a teacher like this, the passion he has for showing things is incredibly, hats of to you

Teacher: This could kill me Audience: Laughs

Teacher : this killed me Audience : laughs

Teacher: gets his chin crushed because he failed to give it 0 speed Audience: Laughs

Teacher : Physics works, and I am still alive. Audience : *cries*

💀💀💀

Teacher: This could kill me Cringe YouTubers: Respect 💯

You’re probably the best physics teacher out there. There should always be a way to learn something new in a fun way! ✨

Loved that. Teachers like that are what our world sorely needs more of

This professor thought he was teaching a room full of students.... Naw this guy is teaching 41 million people, people still watching his lesson today..... Absolute legend.. we need more men and women like this teacher teaching the world for generations.. not just the youth but everyone

This professor is one of the things that inspire me to do my best regardless of what hindrances I have. Even if you have a bad teacher, less-than-hospitable household, financial struggles, or any other negative variable. If you do your best, you can achieve the same as anyone who has the odds in their favour. A good student is a student unaffected by outside variables, whom does their best and learns. A person who learns is better than a person with talent whom does not learn.

give this man an oscar for having the strongest passion and confidence in himself and physics to a point he would put his life on the line for a lesson.

Even knowing the results, my heart was still beating fast when he released the ball

Wonder how many students were laughing due to stress release.

uh no coz if the man didn't release it with 0 speed it could have hit him that's why he was so nervous

Op was talking about the fact that they themselves, not the teacher, knew the outcome.

@Abdullah Awais what?

he is a great teacher ....... no words to appreciate his efforts of making this class memorable for his students.

I was lucky to have a really cool physics teacher on my first year on high school. I remember him pushing chairs to explain the basics for us. That man made me love physics till today.

This is a good, memorable way to do a lesson. Doing something fun and exciting is much better for students than giving them a sheet of paper or doing a boring lesson. What a great guy!

Great Lecture! Taught with Practical approach will remember by the students for their whole life. Even we are watching this in online boosts and develop our self confidence on technical understanding. Thank you sir!

you are welcome

This is awesome and I hope this guy is still giving his lectures happily. This is the type of teacher I wish I had.

I sat through physics I and II and almost exclusively learned everything from the textbook. Professors like these are gold mines of inspiration.

Nobody gonna mention how Dennis from It's Always Sunny in Philadelphia suddenly appears at 2:05?

@John Doe holy shit i see it man

@John Doe does not look like Dennis at all

Explain to me how you could do anything like this when learning 95% of the topics you learn in a physics degree. You need to learn from a textbook. It is the best way to learn. Most of the time, it is the only way to learn. Don't believe that 'you just forget it after the exam' bs either - it's not about your capacity to remember, it's about your capacity to have been able to learn it.

I would love to have this teacher. Not only is he an actual teacher, which is rare today since now they want the computers to teach while they go shop on walmart, but he also does crazy stuff to help people understand and believe things... Kudos to him

It's practical and easy to follow experiments like this that make for a memorable lesson. Imagine schools actually put more effort into giving real life visual examples of what they teach, students might actually become fond of learning.

If all professors taught with this type of passion we would have a much more intelligent world. Kudos sir.

That is truly an amazing lesson, i really wish all of the teachers in the world would be willing to show things in real life examples

You are the most passionate physics teacher I have ever seen. That's the difference between a normal teacher and you, one teaching for formality and one living the subject!

that physics teacher was a good teacher he clearly explained that when he released the ball the gravitational potential energy converts to kinetic energy as it swings down.

If you're interested in the proof: Energy is conserved in this system.. Therefore, E initial = E final. Using this, we can use the formula for kinetic translational energy K = 0.5(m)(v)^2 and set it equal to mgH (gravitational potential formula). H is the initial starting height. You can simplify this by canceling out m and g constants from both aides since they do not change. We are left with H = 0.5(v)^2 Therefore, v(velocity)will change based on the height but will never exceed the total output of gravitational potential energy.

I can't believe American college learns stuff that everywhere else learns in primary school.

No its logic? I dont understand ajsk xd q if you trhow a ball obviosly it wont be at the same high than the first time you trhow it xdxdd qq qq. Q q.

@Justap Erson well they learn it in primary school too. It's just for some reason, American schools like to go over the same thing over and over again. Why do other people hate Americans? Yall find every way to hate on them

@Justap Erson You learn the basics of the basics of the basics in Primary School. Primary School= Shit goes up and falls down. Highschool= How fast and why it falls down. College= Yeah but let's see outside of our scope of understanding how shit falls down. That how college work.

He is so amazing. I hope all teachers are like this. Going beyond their duty to teach their students.

I could listen to his lectures all day. This man is a class act.

How Id love to have a teacher like this. If every teacher was able to make demonstrations like this then we would all love school.

I've seen a similar demonstration done with a bowling ball on Beakmans World. He was explaining the energy stored in a roller coaster and why the first hill is always the tallest. Walter Lewin here on the first release pushed that ball first so it would hit that glass. On the second release he simply just dropped it from the starting point so that it would stop short of where it was released.

This is a teacher we all need. Someone who actually enjoys teaching

The fact that the Teacher still reads comment to this day is so wholesome 😂 i want to thank you kind sir

you are welcome

​@Lectures by Walter Lewin. They will make you ♥ Physics.Please confirm that you are still here.

That is actually really cool.

@Saksham Shukla Why? he just replied 12 days ago

absolute legend, this video still hits even after all these years

What a special professor. I hope my sons are able to have someone this wonderful to learn from.👍

he is a great teacher who can make anyone fall in love with physics... and still so humble that he replies even on the recent comments.. wow, what a man!!!

Not only this Lecture was entertaining at the end, it actually taught me a little bit about Physics

When you clearly understand the physics he is talking about, that’s when you know fully how cool this is.

i took physics my junior year, passed with a 70 forgot everything, yet somehow the way this dude just taught this it made everything flood my mind again i was literally finishing the dudes sentences for him, i wish all my teachers could be this easy to follow

So you didn't forget and actually learned the material years ago, well memorized it. Good job.

you didn't really forget anything, it's much easier for tucked away knowledge to become accessible when it's relevant

How we learn is very important. The difference between a great and engaging teacher and a teacher just goin through the motions can drastically impact how much the students learn.

Well maybe not everything...just 100% of 70% of th course ';)

@UltraGigaChad Is that cool or sad?

more teachers should put this much effort into teaching and peaking students interest (except the near death part)

We need a lot more Professors like him.

My physics teacher in school was just like this he used to do crazy experiments and used to get told off by the school for his outlandish experiments but every single pupil in his physics classes they all passed his physics exam including me. And they weren't easy either.

I studied physics down to the quantum level, and all of it is so exciting if you really understand whats happening (as well as we can anyways) its a treasure trove of insanity and i love it

We Need more teachers like this. Although this is with older students, just think of the inspiration on younger minds

Taking the phrase "practice what you preach" to a literal meaning this dude has balls and conviction in what he teaches hats off to him

Literal ball.

he has wrecking-balls

he has 15kg balls

​@That One Dominus Lol

This guy is the passionate teacher that everyone aspires too. This guy is in it!

my teacher did this in fourth grade and I've never forgotten it, I loved him. His passion was incredible

We need more lecturers like this in college. Engage the class rather than just reading from the slides.

This man is a brilliant teacher, hope he gets his respect

If every School had a teacher like him, we had reach outstanding levels of knowledge...

*If we had a teacher like that, physics would be our favorite subject*

Best A The Best.

I *was* lucky enough to have a physics teacher like this in high school. Energetic and enthusiastic about learning, he'd be leaping onto the top of his desk and shouting "Come on, people! Physics is FUN!" if we weren't as excited as he was about his lessons. Thanks Mr Thorpe. More than 30 years later, still the best teacher I ever had.

Hi :)

if and if

Yea but those type of teachers r very rare.

After more than 2 years of constantly finding this video wherever I'd go on YouTube, I've finally decided to watch it. And I don't regret taking that decision by one bit. Awesome video.

Would love this guy to be my teacher. He has so much passion for his work.

Reminds me of something my dad always tells me. "If physics was boring, you had a bad teacher".

What a great teacher!!!!! I had a science teacher named Mr. Hopkins that did that same thing in his classroom. He was awesome like this teacher here is. I learned so much from him.

Wish he would’ve been my teacher! I would’ve definitely learned so much ❤

his passion is what is absent from most teachers these days

If youve ever been a teacher, you'd then understand why the passion is beat out of us these days. Most of us start off with a great deal of passion

The passion isn't gone, teachers are told to teach certain things certain ways. Students have much lower attention spans/self-control/respect and aren't taught consequences. Lack of good parenting and schools/parents/students not seeing teachers as professionals or even human sometimes.

@metal babe ❥ As a teacher myself who has been going through a rough week because of a parent complaining about me to my supervisor and coordinator because her daughter got a 98 instead of a perfect 100 on her overall score, and my superiors lecturing me on how I should be doing better because they can't ever so no to parents, I can't tell you how much it relieves me to know that there are people out there who understand that teachers aren't these soul-sucking vindictive monsters who purposefully want to take the joy out of learning. Just like you said, it's the school, parents, and yes sometimes the students who make it hard for us to go into work everyday smiling and trying to do the best we can when we know we'll never get any thanks for it.

@Alexandra Taylor I received such a shock when I first started teaching, seeing the way things were actually run in schools - it took me over two years to accept the fact that schools these days are less about teaching (or helping teachers teach effectively) and more about business. Hard to feel passionate when you are given a thousand pointless tasks and deadlines to meet instead of having the freedom to teach the way you want that's best for you and your students.

@00ammy00 ngl I feel bad for some teachers cus in my class we complain about the mean teacher who tells us to be quiet when we talk but then when it's a nice teacher who only shouts when it goes too far they take advantage of them

My High School physics teacher, during the 1980's, was just as charismatic as this man! Thank you Mr. Yenner! You are legendary! From the winner of "The James Watt, No Power Plaque"!

this is brilliant . i wish i was taught physics like this. going to start now though through your videos sir !!!!!

This man taught me so much in just 3 minutes

I wish someone like him were teaching my physics or engineering classes back in the 1970s. I remember a thermodynamics professor who read straight from the text. Even his exams were straight out of the textbook. He should have been fired but they get tenure and there’s nothing you can do.

I watched this lecture 8 years ago when I was in 9th standard. It was absolutely amazing when I first saw it and still is. Legend.

Wait what i learnt this in 7th grade woahh

The vid is 5 years old 💀

@Og Cat just cuz the vid is 5 years old doesnt mean the lecture is 5 years old

Michael R ikrrr

8 years back I was 4 year old

We need more teachers like him!!!!

what a legend! maybe i would have had a chance to like physic a bit more with teachers like this 😄🙇‍♂

Professor I have watched this several times and I understand the physics behind it. But although i know how much 150J is on paper I don't know how much it converts to in real world like how you said it's enough to kill a person. That seems fascinating to me. I guess I'd probably learn to understand in my college or higher education where there would be labs and i believe it also comes with experience. But it's cool to be able to relate it with real life examples

If i was a teacher I'd be just as good as him. He's awesome

Had a great chemistry teacher who loved practical examples. Thirty years later I don't remember the chemistry, but I do remember him regularly blowing things up slightly more than he anticipated. He quit to become a chef.

I had a physics teacher similar to this my junior year. He always presented everything we were learning in a tangible way with real application. Looking back it was my favorite course.

Had one similar like 20 years ago, when he brought out the Van de Graaff I had the longest hair so knew I was up. He burst out laughing (and knew it was coming) after I stepped off the box and grounded my leg... Probably my favourite too TBH.

Did he also make a dangerous mess with broken glass?

@veryslyfox luckily, with a tremendous amount of time and resources, modern science has been able to give us the broom

Application matters SO much in education. If you don't know how to apply knowledge in the real world there's no point in learning it to begin with.

Professor**

I was asked by my college physics professor to be the same person for this experiment and LOL unfortunately I flinched at the last second. I knew it wasn't going to hit but the fear got it me at the last moment. My classmates couldn't help but to laugh and so did I.

I learned more about physics in these 3 minutes than an entire year of high school

If this was how things got taught in school I would have wanted to learn more.

We need more teacher like him❤

Now that's a teacher I want to learn from. ❤

If all teachers were like him, we would have so many more intelligent people in the world.

If all teachers were like him, some would fail to give a zero initial speed

@Philip Zhu RIP to all the teachers who failed to give zero initial speed

Grow up

put in risk own live for attention? like youtubers?

@Alex perez its not just for attention, its to demonstrate a real world example so that the students understand that what hes saying isnt just boring, but it can actually be really interesting and maybe prevent people from dying

Obrigado você foi de grande ajuda para minha tese/aula de física seu vídeo e escalecedor e bem explicado e estruturado. happy Valentina

I just watched this video in my 8th science class today. This was probably the most entertaining part of the lesson haha.

This is the kind of a teacher that I’m willing to attend every lecture of his, behave and listen carefully to every word he says.

I remember my physics teacher doing something similar back when I was a Junior. Fun times😂

if only my own teachers had this much passion and love for learning

Imagine if he accidentally inserted a little big of energy to the ball when he released it. RIP professor.

I know right it's so dangerous, the tiniest force could have given the ball extra speed and he would have died

A+s for everyone!

@Mujtaba If it was the tiniest force, he wouldn't have died, but experience anything from gentle contact with his chin, to a broken chin, jaw and teeth.

@Л.С. Мото Still dangerous bro, would you be willing to do something like that?

Beta wo Walter Lewin hai.....

i wish i had a single teacher as cool as this guy

The world needs more "Hands On Approach" teachers like this.

We need more teachers like you 😎

What a legend! why arent my teachers like this :(

These types of teachers are why I love physics

"Physics works, and I am still alive!" That's a catch phrase 😂

Best A The Best.

One to take to heart!

Wish I had a science teacher like this. Most of the time my Chemistry teacher would just give us packets and say "figure it out yourself" Like, it's chemistry.

this professor reminds me of my current professor of geology (specifically in national parks) who just yesturday ate a rock in front of the entire hall just to show how much clay is in the gran canyon. I will remember it for the rest of my days

Good stuff! I always enjoyed classes with teachers that had a passion like this!

That's awesome!

I wish I had teachers like him.