Dear Mr. Lewin,I´m a medical doctor from Brazil who loves and studies physics ( every single day ) and your lectures ( all of them ) made me feel that I'm on the right way. World would be a very very different place to live if it was full of men like you...Thanks for everything....we love you!
Oh my god! I'm also a medical doctor.. well, not yet (I'm in my last undergraduate semester).. but I've been in love with Physics and Cosmology since I was a kid... I've been reading and watching lectures and videos about both topics since I was in junior high school. I actually think about getting on the right path, pursuing my true passion, studying Physics and Cosmology on a more professional level. Anyways, I love to see that there's a medical expert that has interest in Physics, because I think you already know that this is a really rare thing, lol. Cheers from Syria!
Also Medical doctor from Myanmar, South-east asia country, who love Physics since high school. My tuition teacher Aung Mya Oo, also demonstrated some experiments his best in small scale. Love to see your Lecture Prof.Lewin. Hope I can meet & buy your books.
Hi Sir, i teach Physics in Belgium. I've watched many of your lectures about Electomagnetic radiations, classical mechanics, waves and so on. There's one thing i'd like telling you : you're one of the greatest pedagogue i've ever seen and heared. Thanks for all.
Do they need Physics teachers in Belguim?in your University?I like to explore and teach as much as possible as in India there is no much scope or respect in Science
Dear Mr. Walter I'm from Vanuatu..I really love your lectures it makes me feel interested in physics ...your illustrations about the equations were really relevant ..
Sir, it is the passion about the subject and about teaching it that makes your lessons shine. It is an inspiration. Thank you for sharing this with a broad audience.
its was extremely interesting way to teach the uncertainty principle, i find it lovely, normally you have to focus on some thing but this, what i found is developing your focus, you dont need to force your self. thank you professor
Tremendous work sir ,now currently i am pursuing my undergratuate .I am a great fan of your teaching .I have been watching your lectures since my high school days .Great works and you stand as a perfect example as how a teacher should be !
As a university psychology professor myself for 45 years, I can only stand in awe of Dr. Lewin. He is simply amazing and I thank him from the bottom of my heart for enriching my hobby of studying physics.
I wish I had Walter Lewis as a teacher. My current teacher just reads off bullet points from a PowerPoint and prints off practice questions from the internet.
Logan, Many teachers in the world work exclusively with powerpoint. They eve show derivations in power point. It's very very very sad. Students only benefit from lectures if the teacher derives the derivations on the black board. Power point is basically "showing" the students what's in their books. No need to go to lectures. very poor teaching!
Sir Lewin, is a great Physicist and MIT Professor, I love the way he teaches and demonstrates.I agree with you as many teachers, just use power point via laptop and never do any derivations or equations or numerical. I do teaching Physics and I always solve or derive every relations to prove how the concept and knowledge has been used in Physics and how they are inter related I have worked at NIO, Goa India for 7 years as Research Scientist.I always use marker pen and keep solving equations just the way you do using chalkRegards
Sir the influence your lectures are having on those who are deeply curious about the world is beyond words. Your lectures, and the fact that you have made them available on youtube is a legacy and will have served to make a dent in the universe. Huge respect sir!
sir i am an undergraduate student from pakistan.i think physics becomes so cute if taught by great teachers like you.Thanks A lot for providing us enjoyable , thinkable readable and above all lovely physics.
You are one of the greatest professor I've ever seen to my life. Your lectures has motivated me alot to perceive the physics in the different way from that of a common person. I feel so lucky about myself to be a part of your lecture series. Thank you very much for being so down to earth, professor Walter Lewin. Love from Nepal ❤️❤️
when i was in high school ,i use to say what a damn subject is physics ,one of the lecturers of mine in pre university told about u sir, then i started to view ur lecturing on physics, today i am able to answer every thing practically ,and iam inspiring many other people about physics ,thank u very much ,a love from india and india need lecturer like u sir.
I have been a fan of Feynman since high school but his lectures couldn’t come close to explaining what Professor Lewin does here. Simple and bulletproof!! Watching this version added another nugget of knowledge that just by confining an electron to a hydrogen atom, it moves at very high speeds and has energy.
I Love You Sir. We are unprivileged for not getting a teachers/professors like you. As you know our country INDIA. Where student sucide for KNOWLEDGE. Please speak about Something on Indian Education System so that international educated community concerned about that. Thank You
Professor Lewin, greetings from Serbia. You are wizard! Why I didn't have physics teacher like you are? :(. Physics isn't math, physics is nature. Physics isn't for physicists, its for all people! Thank you a lot! This is magic!
JEE Aspirant here, Gearing up for the JEE MAINS 2021. Learning this all under the age of 18 just puts me to flex a bit on people with that ages. LOL, have fun :)
You are lovable in India too . I wish , I wish even at this age to go back to pre university level to have a professor like you . God bless America for having a genius like you .
27:40 THANK YOU! I speak a little bit of dutch and had an ongoing dispute with my classmates over the correct pronunciation of Huygens, now I will send them this video to show I was actually correct ^^
Sir, just to give an example of how good you teach, I'm in standard 9th and i can understand all of these topics without a doubt. Absolutely love you teaching style ❤️ Huge respect
OMG! This is THE FINEST lecture on QM I have ever listened to or viewed. Prof Lewin is Zeus! Having tried to get my head around QM for many years - and failed miserably - this lecture has blown away much of the fog that obscured it for me. As a student in the "University of RUclips", why has it taken so long for me to find your lecture(s)? Keep up the good work Walt - as Bob Newhart would have called you. Maybe you can explain why the Uncertainty Principle did not prevent the use of tobacco when introduced to Europe by Sir Walter Raleigh! Question: would you be able to explain in conceptual terms why QM & GR breaks down at the singularity that existed at the moment of the Big Bang? Many thanks for a GREAT lecture!
>>> Question: would you be able to explain in conceptual terms why QM & GR breaks down at the singularity that existed at the moment of the Big Bang? Many thanks for a GREAT lecture!>>> There is not yet a theory on quantum gravity. String theory my be our best bet (in the future).
Don't tell me you're another string theorist?! Haha regardless, this being my first time watching your lectures I am already subscribed. Thank you for translating physics to laymans!
just a small reminder since we are reminded of Newton being English ; Niels Henrik David Bohr (Danish; 7 October 1885 - 18 November 1962) was a Danish physicist together with Werner Karl Heisenberg; 5 December 1901 - 1 February 1976) was a German theoretical physicist, The Copenhagen interpretation was first posed by physicist Niels Bohr in 1920. Albert Einstein was a German-born theoretical physicist and so on.
At work and at home, I have two flat-screen monitors that are arranged side-by-side. Now, there is typically a very small gap between the two bezels of the monitor screens where they meet in the middle. Occasionally, I would notice something strange in this small aperture between the monitors: the color pattern or visible texture of the wall behind the screens would appear to be "magnified" in the tiny gap as compared to above the screens. I often wondered what this strange apparent lensing effect was caused by - maybe some "penumbra effect", I wagered. But then I watched your lecture. Now I know what I am seeing is HUP in action!! This fascinates me to no end: That this strange "lensing" of the light reflecting off the wall through the gap in my screens is no optical illusion, but a fundamental property of nature as given by HUP!
@@lecturesbywalterlewin.they9259 Not a help request - just stating that your lecture helped me to understand why something appears to be distorted as it is viewed through a small gap, from some distance away. It is quite fascinating.
I've always wanted to study Physics but by the time of my highschool I didn't have much knowledge about it and didn't have any mentor who could guide me what exactly Physics was.After my Highschool I had to chose commerce and that was due to lack of money and guidance. But now when I have a smartphone I can watch Pro. Walter Lewin's lectures on RUclips. I really enjoy your lectures sir! We love you.🙏
thanks...It is good to remember and understand these principles of QM. Because eletrons have a lot to do with chem and bio ; hence, aging and sickness.....
Born Ernest Rutherford 30 August 1871 Brightwater, Colony of New Zealand, could not go directly to Oxford or Oxford as it was reserved for English born. He was among the first of the 'aliens' (those without a Cambridge degree) allowed to do research at the university. It was an interesting story how many hops he had to make and be well known to be an alien at reserved universities of UK. He is not English he is Kiwi, his parents were immigrants from UK.
Thank YOU Dr. Walter Lewin!!! let me try to say this... HOYawwwCHHh Kins!! yes? Huygens :) ... this was a very enjoyable Presentation!! you're still the best! thank you for your rare talents and teaching genius! .. :) ...
I really like your lectures. Very well put together, with a bit of humour. I have one or two questions about the diffraction single slit experiment. Is it possible that the smaller the slit results in more photons interacting with atoms/electrons that make up the sides of the slit, than when it is larger? Which could result in the diffraction pattern. This interaction would be random depending on where electrons are in their orbit. Are the photons actually changing their momentum. After all the photons are originally going in a straight line, but end up going at an angle. In order for that to happen some force must have been applied. What other experiments have been done that support the uncertainty principle? Has anyone measured the deflection in the material making up the slit? In theory perhaps as the slit gets smaller the deflection increases. This would be an indication of an interaction between the material and the photons. More deflection = more interactions.
love you sir i can finally understand what will be happening in this ..... but i did not understand the experiment that's was perform by you in the last.
The Planck constant defines spin of elemental particles which is the same as vibrational rate in metaphysics that allows to make objects invisible ("move to another dimension").
Great video, just subscribed. The audio could use some tweaking through compression and limiting though, as the combination of dynamic range and cadence make listening a little strenuous at lower volumes.
Dear Professor, Thanks for the lovely demo of the uncertainty principle. I can do it at home, though not that neat. However using a minute pin hole, the spread of the circular smear seems much less. Is it because, now the problem is no longer one dimensional? How about the calculation? May you live forever. Best regards.
I can make the opening of my slit 5 microns. You cannot make your pinhole 5 microns. Thus your spread will be much much less. But even if you could make it 5 microns too little light would go through. I always use the slit because the amount of light that goes through a slit t 5 microns is about ten thousand times more than what goes through a pinhole of 5 microns. My laser beams are about 4 mm wide. Thus I win a factor 4*10^(-3)/5*10^(-6). A pinhole is the wrong way to go. Show less
![Jordan Adetunji - KEHLANI REMIX (feat. Kehlani) [Official Video]](http://i.ytimg.com/vi/EeJ8n5PxFGE/mqdefault.jpg)
I' am pretty sure that even his camera man's will be good in physics
Yes indeed
😂
Dear Mr. Lewin,I´m a medical doctor from Brazil who loves and studies physics ( every single day ) and your lectures ( all of them ) made me feel that I'm on the right way. World would be a very very different place to live if it was full of men like you...Thanks for everything....we love you!
Thank you for your kind words. I have two friends .in Brazil. They both study Physics. One of them finishes her studies now here in the US.
I also love physics.
Oh my god! I'm also a medical doctor.. well, not yet (I'm in my last undergraduate semester).. but I've been in love with Physics and Cosmology since I was a kid... I've been reading and watching lectures and videos about both topics since I was in junior high school.
I actually think about getting on the right path, pursuing my true passion, studying Physics and Cosmology on a more professional level.
Anyways, I love to see that there's a medical expert that has interest in Physics, because I think you already know that this is a really rare thing, lol.
Cheers from Syria!
Also Medical doctor from Myanmar, South-east asia country, who love Physics since high school. My tuition teacher Aung Mya Oo, also demonstrated some experiments his best in small scale. Love to see your Lecture Prof.Lewin. Hope I can meet & buy your books.
Hi Sir, i teach Physics in Belgium. I've watched many of your lectures about Electomagnetic radiations, classical mechanics, waves and so on.
There's one thing i'd like telling you : you're one of the greatest pedagogue i've ever seen and heared. Thanks for all.
Thanks, Chris, for your kind words.
Do they need Physics teachers in Belguim?in your University?I like to explore and teach as much as possible as in India there is no much scope or respect in Science
Absolutely!!!
As a student I think he is one if the best teachers even among his fellow MIT professors.
good sir
"The more the universe seems comprehensible, the more it also seems pointless". Steven Weinberg
:)
i understood about 15% of that, but thoroughly enjoyed all of it.
Dear Mr Lewin,
I am so touched by your lectures that you make even feel emotional.
Thank you very much
Thank you
you are amazing. I cannot believe that I comprehend this. Thanks a million to your lecture. You are a rock star superhero!
:)
A lifetime of learning in a one hour video. Thank you for making and sharing this video, it's fantastic.
Fantastic! I was uncertain about Heisenbergs principle, but Mr. Lewin shed light on it. Brilliant lectures, so clear and informative.
Mr Lewin your work is inspirational. Thank you for sharing your love for understanding.
Dear Mr. Walter I'm from Vanuatu..I really love your lectures it makes me feel interested in physics ...your illustrations about the equations were really relevant ..
Thank-you good sir for making these lectures available this way! I'm really loving these!!!!!
i did masters in chemistry .... though i like physics .... and every aspiring teacher should learn how to teach from him .... great respect
Sir, it is the passion about the subject and about teaching it that makes your lessons shine. It is an inspiration. Thank you for sharing this with a broad audience.
What a great way to explain the Uncertainty Principle practically.. Truly you are one of the greatest physics teacher
its was extremely interesting way to teach the uncertainty principle, i find it lovely, normally you have to focus on some thing but this, what i found is developing your focus, you dont need to force your self. thank you professor
Tremendous work sir ,now currently i am pursuing my undergratuate .I am a great fan of your teaching .I have been watching your lectures since my high school days .Great works and you stand as a perfect example as how a teacher should be !
As a university psychology professor myself for 45 years, I can only stand in awe of Dr. Lewin. He is simply amazing and I thank him from the bottom of my heart for enriching my hobby of studying physics.
Tremendous lecture from a truly talented gem of a man.
This lecture of yours can be put in the top 5, if not the first position. Just FANTASTIC, both, the knowledge & the way you presented it.
thank u 😊
I wish I had Walter Lewis as a teacher. My current teacher just reads off bullet points from a PowerPoint and prints off practice questions from the internet.
ur not alone
Logan, Many teachers in the world work exclusively with powerpoint. They eve show derivations in power point. It's very very very sad. Students only benefit from lectures if the teacher derives the derivations on the black board. Power point is basically "showing" the students what's in their books. No need to go to lectures. very poor teaching!
i agree.....student needs to see the equation building up.....that's why you are the best in the business...
If you are a student and you require classes I can teach you online. Via Skype. I'm a Physics lecturer and I have my coaching classes. Regards,
Sir Lewin, is a great Physicist and MIT Professor, I love the way he teaches and demonstrates.I agree with you as many teachers, just use power point via laptop and never do any derivations or equations or numerical. I do teaching Physics and I always solve or derive every relations to prove how the concept and knowledge has been used in Physics and how they are inter related I have worked at NIO, Goa India for 7 years as Research Scientist.I always use marker pen and keep solving equations just the way you do using chalkRegards
Thanks for being so concise, it really helps me focus and follow along.
:)
Sir the influence your lectures are having on those who are deeply curious about the world is beyond words. Your lectures, and the fact that you have made them available on youtube is a legacy and will have served to make a dent in the universe. Huge respect sir!
Thanks Sameer for your kind words
Thnx sir....you are a great teacher.... lots of love from india
sir i am an undergraduate student from pakistan.i think physics becomes so cute if taught by great teachers like you.Thanks A lot for providing us enjoyable , thinkable readable and above all lovely physics.
I'm feeling satisfaction when after finishing 8 years of my student life I understand this topic (and many more)
Thank You Sir
You are one of the greatest professor I've ever seen to my life. Your lectures has motivated me alot to perceive the physics in the different way from that of a common person. I feel so lucky about myself to be a part of your lecture series. Thank you very much for being so down to earth, professor Walter Lewin. Love from Nepal ❤️❤️
Wow, thank you!
Today, I learned what quantic phisics is about, great explanation, example that excellence is acheve when you do what you love
when i was in high school ,i use to say what a damn subject is physics ,one of the lecturers of mine in pre university told about u sir, then i started to view ur lecturing on physics, today i am able to answer every thing practically ,and iam inspiring many other people about physics ,thank u very much ,a love from india and india need lecturer like u sir.
Oh, I see. Thank you for the clarification, Professor Lewin.
Thank you, Sir for your lectures. They are very helpful.
:)
You just explained one of the most challenging topics of physics in such an easy way, you’re definitely the Feynman of the 21st century.
Lecture that illustrates eloquently the beauty of science as a poetic language that enhances the beauty of nature around us .. god bless
:)
This was the best explanations i ever heard of uncertainty principle.
I love him....he makes these beautiful concepts come alive
Hello Sir,
I'm from India,
It's really awesome, I also become like you.
Sir I am watching all your lectures. Love and respect from Pakistan.
You, sir, have spread the light.
I have been a fan of Feynman since high school but his lectures couldn’t come close to explaining what Professor Lewin does here. Simple and bulletproof!!
Watching this version added another nugget of knowledge that just by confining an electron to a hydrogen atom, it moves at very high speeds and has energy.
thanks for your kind words
I Love You Sir.
We are unprivileged for not getting a teachers/professors like you.
As you know our country INDIA.
Where student sucide for KNOWLEDGE.
Please speak about Something on Indian Education System so that international educated community concerned about that.
Thank You
Thank you professor. You are really amazing. You made me to think that actually how to think?
I am getting my PhD in Physics and I still love to watch your videos. I really enjoy a well put together lecture.
Thank you for your kind words
MSC specialisation? Solid state?PhD topic? semiconductor? or Thin Films?
Professor Lewin, greetings from Serbia. You are wizard! Why I didn't have physics teacher like you are? :(. Physics isn't math, physics is nature. Physics isn't for physicists, its for all people! Thank you a lot! This is magic!
JEE Aspirant here, Gearing up for the JEE MAINS 2021. Learning this all under the age of 18 just puts me to flex a bit on people with that ages. LOL, have fun :)
Extraordinary teacher ! Thank you Sir!
You are 10000 times better than my school teachers. . .
You are lovable in India too . I wish , I wish even at this age to go back to pre university level to have a professor like you . God bless America for having a genius like you .
Thanks Dr. Lewin on the positron thing; I spend 99% of my time on M-Theory.
excellent!
thank you so much walter lewin ,,,love from Nepal , Kathmandu
27:40 THANK YOU! I speak a little bit of dutch and had an ongoing dispute with my classmates over the correct pronunciation of Huygens, now I will send them this video to show I was actually correct ^^
this is the best lecture on Heisenberg's uncertainty principle.
:)
Sir, just to give an example of how good you teach, I'm in standard 9th and i can understand all of these topics without a doubt. Absolutely love you teaching style ❤️ Huge respect
Keep watching
This was a really top-notch presentation.
You are a hero to the world sir!
Wonderful stuff Walter - a nice refresher!
:)
Finally understood it. Thank you, sir.
u r the best physics pro sr i have ever seen
OMG! This is THE FINEST lecture on QM I have ever listened to or viewed. Prof Lewin is Zeus! Having tried to get my head around QM for many years - and failed miserably - this lecture has blown away much of the fog that obscured it for me. As a student in the "University of RUclips", why has it taken so long for me to find your lecture(s)? Keep up the good work Walt - as Bob Newhart would have called you. Maybe you can explain why the Uncertainty Principle did not prevent the use of tobacco when introduced to Europe by Sir Walter Raleigh! Question: would you be able to explain in conceptual terms why QM & GR breaks down at the singularity that existed at the moment of the Big Bang? Many thanks for a GREAT lecture!
>>> Question: would you be able to explain in conceptual terms why QM & GR breaks down at the singularity that existed at the moment of the Big Bang? Many thanks for a GREAT lecture!>>>
There is not yet a theory on quantum gravity. String theory my be our best bet (in the future).
Don't tell me you're another string theorist?! Haha regardless, this being my first time watching your lectures I am already subscribed. Thank you for translating physics to laymans!
You are the best. Love from India
just a small reminder since we are reminded of Newton being English ; Niels Henrik David Bohr (Danish; 7 October 1885 - 18 November 1962) was a Danish physicist together with Werner Karl Heisenberg; 5 December 1901 - 1 February 1976) was a German theoretical physicist, The Copenhagen interpretation was first posed by physicist Niels Bohr in 1920. Albert Einstein was a German-born theoretical physicist and so on.
Great professor!
Dear mr lewin i am from Kerala your class.... I really love your lecture 🥰
Great Camera work, thank you!
Indeed, It give me Sleepless nights thinking about this!😃
Such a amaizing teacher 💗
At work and at home, I have two flat-screen monitors that are arranged side-by-side. Now, there is typically a very small gap between the two bezels of the monitor screens where they meet in the middle. Occasionally, I would notice something strange in this small aperture between the monitors: the color pattern or visible texture of the wall behind the screens would appear to be "magnified" in the tiny gap as compared to above the screens. I often wondered what this strange apparent lensing effect was caused by - maybe some "penumbra effect", I wagered. But then I watched your lecture. Now I know what I am seeing is HUP in action!! This fascinates me to no end: That this strange "lensing" of the light reflecting off the wall through the gap in my screens is no optical illusion, but a fundamental property of nature as given by HUP!
can't help you
@@lecturesbywalterlewin.they9259 Not a help request - just stating that your lecture helped me to understand why something appears to be distorted as it is viewed through a small gap, from some distance away. It is quite fascinating.
I've started to love it
great lecture. I bought a grating after this
Hi professor I am a physics teacher in Uganda I love your lecture and I do pray to one day reach in your lecture room physically.
Really Explanation... Thanks a Lot... 💗
Legs touch from India...Gurudev..you are such an inspiration to all teachers of world
I've always wanted to study Physics but by the time of my highschool I didn't have much knowledge about it and didn't have any mentor who could guide me what exactly Physics was.After my Highschool I had to chose commerce and that was due to lack of money and guidance.
But now when I have a smartphone I can watch Pro. Walter Lewin's lectures on RUclips. I really enjoy your lectures sir!
We love you.🙏
That's awesome!
thanks...It is good to remember and understand these principles of QM. Because eletrons have a lot to do with chem and bio ; hence, aging and sickness.....
:)
Just loved it ❤❤
Born Ernest Rutherford 30 August 1871
Brightwater, Colony of New Zealand, could not go directly to Oxford or Oxford as it was reserved for English born. He was among the first of the 'aliens' (those without a Cambridge degree) allowed to do research at the university. It was an interesting story how many hops he had to make and be well known to be an alien at reserved universities of UK. He is not English he is Kiwi, his parents were immigrants from UK.
What a pleasant dive into the microworld!
Seriously Dr. Lewin, I might change my major. I am loving this stuff.
:)
U made it all easy😍😍 ❤
Thank YOU Dr. Walter Lewin!!! let me try to say this... HOYawwwCHHh Kins!! yes? Huygens :) ... this was a very enjoyable Presentation!! you're still the best! thank you for your rare talents and teaching genius! .. :) ...
Thanks Philip for your kind words.
Outstanding! Thanks from Nepal!
:)
I used to know this stuff. Twenty some years after university, it's all gone. What a shame.
Your teaching is the right way for physics teaching
:)
Great Lecture!!!!
I really like your lectures. Very well put together, with a bit of humour. I have one or two questions about the diffraction single slit experiment. Is it possible that the smaller the slit results in more photons interacting with atoms/electrons that make up the sides of the slit, than when it is larger? Which could result in the diffraction pattern. This interaction would be random depending on where electrons are in their orbit. Are the photons actually changing their momentum. After all the photons are originally going in a straight line, but end up going at an angle. In order for that to happen some force must have been applied. What other experiments have been done that support the uncertainty principle? Has anyone measured the deflection in the material making up the slit? In theory perhaps as the slit gets smaller the deflection increases. This would be an indication of an interaction between the material and the photons. More deflection = more interactions.
love you sir
i can finally understand what will be happening in this .....
but i did not understand the experiment that's was perform by you in the last.
Nice lecture i have ever seen in my life
The Planck constant defines spin of elemental particles which is the same as vibrational rate in metaphysics that allows to make objects invisible ("move to another dimension").
it was very different and changed my sight for world..!!!!
:)
I knew this but I couldn't turn it off! I immediately went onto Amazon and bought a bunch of of diffraction gratings for the kids :-)
great!
Walter Lewin . . .what a wonderful teacher and a lovely man.
I may have clicked on this for the High Pressure Sodium emission spectrum before I realized it was a video by you...
:)
Great video, just subscribed. The audio could use some tweaking through compression and limiting though, as the combination of dynamic range and cadence make listening a little strenuous at lower volumes.
❤️physics and ❤️ you sir
Sorry but ❤️ physics> sir
But you are one of the greatest teachers in the world and you made me love physics this much ...
:)
Respects, Sir.
Being a physics teacher I enjoy your lectures immensely
great!
Dear Professor, Thanks for the lovely demo of the uncertainty principle. I can do it at home, though not that neat. However using a minute pin hole, the spread of the circular smear seems much less. Is it because, now the problem is no longer one dimensional? How about the calculation?
May you live forever. Best regards.
I can make the opening of my slit 5 microns. You cannot make your pinhole 5 microns. Thus your spread will be much much less. But even if you could make it 5 microns too little light would go through. I always use the slit because the amount of light that goes through a slit t 5 microns is about ten thousand times more than what goes through a pinhole of 5 microns. My laser beams are about 4 mm wide. Thus I win a factor 4*10^(-3)/5*10^(-6). A pinhole is the wrong way to go.
Show less
Excellent lecture Sir. Thanks and Regards 🙏🙏🙏🙏🙏🙏🙏🙏
Most welcome
he is a genius and the videos uploaded by him are marvellus
:)
I love you sir.....I am from bangladesh I am really a big fun of u and I love physics and ur lectures
:)
amazing...