"For Beginners" Series | Lecture 2: Feynman for Beginners
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- Опубликовано: 22 авг 2024
- Feynman's approach to quantum mechanics as a sum over all paths. Feynman diagrams as a visualization of interacting particles. For viewers with no or little knowledge of the subject. By Pervez Hoodbhoy in Urdu.
Where are the students 🤔 such an intersecting topic and delivered by one of the best physicist in the subcontinent.
Arunabha Ghosh this is former Chairman of our physics department. He has recently launched the coffee shop and there he made separate arrangements to deliver physics lectures to physics aspirants. This is not a class room. When he came to auditorium in university then students from all departments attend his lectures and hall was jam-packed.
@@waqasriaz4163 in which university?
Interesting*
@@Jerry-ox7by Quaid-i-Azam University, Islamabad
Pakistanis love Mullas not scientists
DR Hoodboy should give lectures on all the famous scientists. That would be great for students in Pakistan. I want to thank Dr. HOODBOY relentless efforts to educate Pakistan.
“I would rather have questions that can't be answered than answers that can't be questioned.”
― Richard Feynman
If there were a button for millions of like I will give that only to you. You are such a great person that you are giving the knowledge to us in free of cost. Many many thanks to you Professor Hood Bhai may Allah give you the reward of this effort.
Besides this great lecture, we must appreciate the installation of Chalk board on the wall... "Marker mn vo baat he nhn hy" .. This cracking sound of chalk helps us not to procrastinate during the lecture..❤️❤️
Wow. The internet need such series videos more. Hatsoff.
Thank you so much . Physics in Urdu is a dream come true
Love to learn from ur lectures even at the age of 70.u r an Asset of pakistan & we r lucky to have one like u.stay Blessed & keep on polishing the future science students
sir i admit this is not the place and occasion to say this but this "asset" also happens to be a muhajir. it gives me immense pleasure when of mohajir rises to glory.
You are a gem sir. Probably pakistanis dont know your real worth. Being a physics student from India I salute you. 🙏
pakistanis know and like the mulla of madarsa only
Lot of blessing from India Sir, you are true gem 💎 .
Really excited for this series 🌟🙌🏻 true public service
Thank you, sir.
EXCELLENT PROGRAMME TO PROMOTE THE UNIVERSE KNOWLEDGE AND ABOUT EVERYTHING .THANKS MR. DR PERVAIZ .THANKS
Excellent exposition by Prof PA Hoodbhoy. A limitation of the technique is the restriction to a single operator and momentum during computation . Furthermore, the absence of a theory for the modified Feynman-alpha technique hinders its full investigation .
Wow, amazing lecture!! This is the power of the internet. Thank you so much for your service 🙏❤️
so good to see you making introductory videos on them .... I have read his autobiography and he was such a maverick
His nick name Dr
Swinger
Sir, your lectures are awesome. If you use maximum terms in english then it would be more easier for the audience in RUclips who don't know Urdu that much. Thank you sir for doing this great job after retirement and best wishes for you.
Have a healthy, happy retirement life and have fun with Physics, sir.
What a wonderful set of lectures.
I have heard Prof Hoodbhoy over many things but as a teacher I understand him as a scholar who wants to educate the interested. There are researchers who contribute to universal understanding. Other translate it to mass understanding.
You make Physics look so easy and simple. Truly a legend in Teaching Profession !!!! Long live Sir.
Even at the age of 85 I have learned a lot from yr lectures. You are an inspiration.
Sir thank you for this outstanding lecture
i love these lectures. what an amazing teacher . love you sir
This is fine but I dont think that these lectures are doing much benefits to young minds and audience. Having studied engineering I did not encountered Feynman diagram or any work Feynman had done in our professional course. I was interested in mathematics and sciences from childhood and also like to read lot of books on various topics. Feynman came into my life through books and I was simply awed by his scientific temperament, his commitment towards science , his ability to simplify things, and his pragmatism. This has helped me a lot in overcoming my cultural and religious baggage (I come from India and a hindu brahmin family where even in exam I had to pray 100 Gods and seek blessings of every elders of my house when I was going to give some crucial exam ) . After reading Feynman I just realized I was looking for this. There are many people from different fields who have inspired me to become a free man but Feynman did it best. I did not understand Feynman diagram , his works on QED but that did not spoil the fun. I had read "Feynman lectures on physics" and was really impressed how lucidly he had explained simple laws of physics . I still remember his unique way of finding center of mass, his examples to explain the concept of energy to mention few. I read in his anecdotal book that he was pretty impressed with "differentiate under integral" , one of his tools for calculation. When I investigated and found the amazing benefits of i"Differentiate under integral sign" that day I felt the pleasure of winning Nobel prize by my own standard :). I strongly believe we should not cage Feynman within Feynman diagrams, his contribution on QED as these are high end physics. One can live a good life without knowing this. But if one miss to read "Feynman lectures on physics", "Characters of physical laws" , his autobiographical book "Surely you are Joking Mr Feynman", "What do you care what other prople think" they are missing something in their life. And all these books any layman having interest in science can read. I feel this lecture did not touch anything, but tried to touch Feynman contribution on specialized field on physics and may not have raised any curiosity for layman to know Feynman or in broader aspect encouraging scientific tempermant, total honesty and dedication towards science, able to bypass complexity and to enjoy life dabbing in wide variety of pursuits like Feynman did. The lecture failed to do that in my personal opinion.
Good observation, thank you sharing experience ,
dude ur insta id
Thanks a lot sir ,I learnt a lot from yours lectures
Great man for India and pakistan
sad not to see a the hall at full capacity but hats of to you for still pushing through.
See the very small number of listeners for this talk even though it is delivered in the mother tongue of Pakistanis. If such a talk was delivered in any place in India by any similarly famous professor with an American PhD, the lecture hall is likely to be full to overflowing.
That is the difference between the mentality in Pakistan and India.
This is not the difference between mentality but the level education, though your comment did show your mentality level which is full of hate and deep in sewerage.
Nah bro this lecture was not marketed that's why non of us knew about it , i guess the audience was just for the Lecturer to make the video.
Low number of seats and small room is also an evidence.
Mashallah amazing lecture
Best physics class ever🥰🥰🥰
Here are the Key points of this video:
00:00 Feynman's influence on students and his unique teaching methods
03:48 Joe Fine's work on Reformation of Quantum Mechanics
11:21 Exploring complex numbers and their implications
15:06 Feynman discusses the patterns formed when light interacts with material.
22:20 Exploring quantum field theory's impact on understanding physics
25:14 Introduction to quantum mechanics and particle collisions
32:10 Feynman's approach revolutionized particle physics calculations.
35:07 Connecting the Hand Free Mode of Relativity Ice Cream of Relativity
41:21 Explanation of particle collisions and formation of virtual photon.
44:56 Discussion on quantum physics and particle collisions.
51:23 Feynman diagrams represent complex interactions
54:48 Explanation of Nobel Prize and renormalization in physics
1:01:56 Understanding the meaning and function of Mathura in box diagram representation.
1:05:09 Feynman diagrams illustrate particle interactions in a universe.
1:11:28 Examining the peculiar behavior of pintu particles
1:14:44 Discussion on gravity and Nobel Prize winners
1:21:15 Explanation of virtual particles and their behavior
1:24:45 Quantum mechanics interpretation involves particles taking all paths.
1:30:54 Understanding the calculability and complexity of Feynman diagrams
1:33:30 Teleportation in quantum mechanics explained
1:39:44 Understanding formalism is crucial for beginners.
Truly inspirational Sir۔
Commendable on so many levels۔
Wish to be part of a live audience with you delivering a lecture۔
All the best and hope this endeavour is able to sustain itself۔
How humble you are Sir, wish I had a physics teacher like you during my school days!!
شکر ہے آپ نے یہ سلسلہ شروع کر دیا۔ بہت بہت شکریہ
میں نہ ریاضی دان ہوں اور نہ ہی طبیعیات کا ماہر، لیکن آخر تک اسے دیکھتا رہا۔ 76 سال کی عمر میں میں بالکل 9 سال کی عمر میں آپ کی کلاس میں بیٹھے ہوئے خضر صاحب کی طرح ہوں، جو دنیا کے سائنسی منظرنامے کا تصور کرنے کی کوشش کر رہا ہو۔ پرویز ہودبھائی صاحب یہ منظرنامہ پیش کرنے کا آپ کا شکریہ۔
Thanks Sir,
I was thinking and to tell you remind of Feynman and your lectures certainly in Urdu are as close as it could be to those . It has the similar finesse, clarity and fluency.
Good public lecture … more of such people needed to deliver complex ideas in local language and relatable examples
Nice lecture on amplitude, Electron, Neutron and photon!
Absolutely amazing series
Love from India ❤️. Aacha laga koi to great teacher hai pakistan mai
Great sir
Richard Feyman was more known as a Teacher than a Physicist. Back then i learned abt his study technique "Feyman method" and it helped me a lot
I visited to Black Hole after two months and feeling happy that Black Hole has got much subscribers & views. It is an indicator that our youth using RUclips for a purpose.
woooooow sir
mene jese hi lecture ko touch kia mujhe laga boring sa english me lecture hoga ,..lekin hindi sun k maja agaya
Dr. sb we started from the problem that why stone fall straight down remained unsolved.
Love U sir...From Zhob, Baluchistan
Nice work 👍🏻
سر آپ کا ممنون ہوں
great sir prvez hoodby
Mashallah 🔥
NICE PROGRAMS ESPECIALLY FOR A PERSON LIKE ME WHO HAS NO SCIENTIFIC BACKGROUND
God bless u sir...for begining of Great series
he doesn't believe in god..
@@awaiskhalid154 Exactly. How come people expect gods to help physicists
My favorite teacher
I'm from india
Sir you are v lucky to have sight of great. Richard Feynman
itna achha lecture, students itne kam, sab madarsa mein baithe honge
Madrasa ma kuch to.samj aa jay gi... wahan k teachers explain to kr sakty hn... kam az kam is se acha lecture dy gn... ye pta ni kia chawlain mar ra ha..
@@IsmailKhan-oi5hl sahi hai bhai . Is prof ko samajhne k liye dimag kharch karna padta hai, sawaal puchne padte hain. Madarse mein dimag kharch karne ki jaroorat nahi padti, jo mulla ji kahe wo sach hai.
@@BharatWantsPok zra sahil adeem ko ja k suno... ap ki dimagh ki b nassain khuly gin.... pta chaly ga jb science ki Islami taalimaat ki roshni ma explaination ki jati ha to kitna azeem ilm hasil hota ha.... pr tm log kaaly engraiz ho... ata jata kuch ni bs apny aqaon ko khush krny k lye Islam ka mazaq urhaty ho... awr jitni mashallah ap ma aqal hoti ha wo b ap ko mu ni lgaty. awr phr ap ki halat dhobi ka kuta na gr ka na ghaat ka....
@@IsmailKhan-oi5hl madarsachap kabhi science daan ko pasand nahi karta, and vice-versa. Quantum theory abhi final nahi hui aur aasmani kitab ko final maan liya gaya.
Sir, you are great. from INDIA
Feynman also worked in Los Alamos on nuclear bomb project where my father in law Dr. Orrondoff worked with him.Prof.Dr Nasir Fazal Cambridge USA 🇺🇸
He was the leading brain of the Manhattan project.
Today I discovered a channel of pakistni wow in physics which is my passion.
Thank You Sir !!!!
And plz shed some light on applications of Uncertainty Principle
superb
Dr. Sahab, IMHO, you should have first talked about double slit experiment and then talked about the pattern we get without getting into math.
Sir u made my day
I request that students should use mic while asking questions. normally they keep the mic away from their mouth making difficult to listen and understand question by viewers of this program. Dr sb mic is also not of good quality.
Sir v v good
Dr. Saab I am seriously interested to know how many people from Paxtan saw this video!
Asalatu WASALAM allaihkai ya rasoollaha ya habibullaha ya arhamarahemeen
Agar koi Co cert hota ho hazaro mai log aate magar physics wo bhi hooboy etny km students it shows our priority
❤️
Sir Kindly give a lecture on Werner Heisenberg,
The guy in glasses asked good questions
Sir Quantum mechanics py bhi series bnaye'n.
Khaas tor pr schrodinger equation sy... Acha material RUclips py bht km hai.
Feynman
Fine sir
sir what about scattering of elctron in x ray tube? what is light scattering my pleasure if can explain lots of love from India
the problem statement you gave at the start of videoaround 2 min, my reasoning would be we can consider both earth and ball as point object. now earth has gravity which attracts the objct towards it and the direction would be radially downward since singular force act in straight line and thats why ball will follow the trajectery of gravity. whatsa so complex in this? i dont understand. can you please highlight the knowledge gap in my thinking
Expected from pakistani students
What's the location of these lectures if anyone wants to participate
I am interested to attend if taking place in Lahore. Please let me know soon.
Sir please share the method to join these lectures face to face. Thanks and Regards
Sir ji कुछ lecture हिन्दी में भी दो, उर्दू के Words का meaning नहीं पता.... Good lecture...
Sir please make a video on quantum entanglement. Also is Copenhagen Interpretation of quantum mechanics right or Einsteins idea of determinitic reality right? Respect from India 🙏.
India has better professors.
@@Salmonellatyphi Brother maybe but science and knowledge do not have any nations or boundries. Its universal. Jahan se gyan mile le lo.
Sir need more lectures on physics from beginner to advanced level in theoretical physics
It doesn't work. Koi kaam nhi ayega ye sab ... Faltu hai ... snapshot le ke rakh lo ... Education vo lo jha se paise bna Sako .... Meine bhi engineering se pahle puri HCV lgai thi ...socha tha ek din Resnick bhi padhunga but ye sab kaam nhi aaya ..
@@HimanshuShukla0802 baat to shi h. Lkin padhane m mazza aata h. Ek baar anil seth aur Donald hoffamn ki ted talk dekhna consciousness par.
Exactly although ap isse paise nh kama sakte jo ke zindagi ka eik hissa hy lekin phir bhi kiunke ye humari consciousness ko satisfy karta hy isliye parhne main bohot maza aata.
Although on the other hand i am also doing two majors in engineering software and chemical because paise bhi zaroori hy xD
Repulsive gravity is also possible Iwould say
can you please do these lectures in english and a 2nd grade level profiency of urdu/hindi. kindly leave all the big words out or use simple english in such cases.
Question:
Do electrons have free will to move from point A to point B?
Note: you said if electron has two same paths like YOU to choose ibn e sina road or other, then it's yours choice to go from path A or B BUT Sir YOU have brain/intellect while electron don't 😊
So question is the same, which path should electron take, if both paths A or B are totally same?
The thought process behind your question is not how Physics at the Plank scale works... The first idea in QM is everything is studied in terms of Probability. Determinism which is bedrock of Physics in the Newtonian scale, is absolutely redundant in the Quantum scale. So nothing can be absolutely determined.
What here being explained by the interference experiment is the idea of probability which is 50-50. Because it is probability 100%/2=50%. Like that. Simple.... Measured by Amplitude. Better explained by eigen values. Learn linear algebra & complex numbers to understand how we investigate quantum phenomenon better like Sherlock Holmes. hahaha
Now the deeper question is why.... Let me ask another question to U from Optics - How do U explain the principle of least time for EMW (let us assume light here) that leads to understanding of principle of least action? How do nature determine all that in classical mechanics?
Laws of Nature is all about simple truths, guarded by complex walls of puzzles, that we physicist break open to see the final holy Truth. The one and only agenda to practice science.
sir ap k lectures kis kis day hoty hain? aur kahan hoty hain?
ہم بھی شامل ہو سکتے ہیں ؟میں اسلام آباد میں ہی رہتا ہوں
How to attend the lectures????
Where are these lectures taking place, what's the time?
37:00
sir kindly upload course lectures also
But for entropy, the rule of minimum does not follow I believe.
34:00
Can anyone tell me what theory the guy talked about in last? I could not hear the name of theory.
sir ye lectures live ly skty hain?
سر اپ نے اس میں کہا کہ الیکٹران ایک نکتے سے دوسرے تک جانے کے لیئے ہو سکتا ہے چاند سے بھی ہو کر آ جائے لیکن یہ تو تب ہو گا نا جب ہم اس کے درمیان سکرین رکھیں گے ۔۔۔اگر نہ ہو تو پھر تو وہ سیدھا ہی جائے گا نا۔۔۔
🙏🙏
پرویز ہودبھائی پاکستان کی سطح پر سب سے بہترین استاد ہیں فزکس کے اور ممکن تھا کہ یہ عالمی سطح پر بھی کوئی نام کما لیتے اور انسانیت کی خدمت کرتے، لیکن مجھے بہت بڑا افسوس اس وقت ہوا جب میں نے پرویز ہودبھائی کو 'موت کا منظر ' جیسی تیسرے درجے کی کتابوں پر تبصرے کرتے ہوئے دیکھا اور اس کی بنیاد پر اسلامی تعلیمات اور احکامات کے مسخرے اڑاتے دیکھا ، میں نے یہ بھی دیکھا کہ ہودبھائی صاحب چاند پر زلزلے کے متعلق کہتے ہوئے پھر سے اسلامی عقائد پر حملہ آور ہوئے، کبھی یہ مولانا طارق جمیل صاحب کی لمبی داڑھی کا مذاق اڑاتے دیکھے گئے تو کبھی فورمین کرسچن کالج کے ایشو کو لیکر چوکوں میں دھرنے دیتے ہوئے ملے۔
یہودی ،عیسائی اور ہندو یا دوسرے مذاھب کے پس منظر والے ذہین لوگ جب اپنے مذہب سے بیزاری کا اظہار کرتے ہوئے دکھائی دیں تو وہ حق بجانب اس لئے ہیں کہ وہاں دقیانوسیت اور غیر فطری و غیر عقلی باتیں مذہب کا حصہ ہیں اور جو آپس میں بھی تضادات کے شکار ہیں۔ اب ان لوگوں کی نقل اتارتے ہوئے جب اسلام پر حملہ آور ہوا جائے تو یقین کریں اپنی سطحی سے قسم کے معلومات کی بنیاد پر جب آپ بات کرتے ہیں بڑے مضحکہ خیز لگتے ہیں، کیونکہ اسلامی تعلیمات کے پیچھے پورا فلسفہ کار فرما ہے۔ جس طرح آپ کمیونزم ، ہیومینزم اور معاشرے کی ارتقائی نظریات پر بات کرتے ایسے ہی اسلام اور اس کی تعلیمات و احکامات پر بات کریں اور مقابلہ و موازنہ کریں تو ہی آپ کی بات علمی و عقلی اور تحقیقی ہوگی جس کے ہودبھائی صاحب بڑے دعوے کرتے رہتے ہیں یعنی rationalism۔
کبھی ہودبھائی صاحب مفکر ہیں تو کبھی یہ ادیب و دانشور اور مؤرخ بن جاتے ہیں ،کبھی یہ سیاسی تجزیہ کار کی صورت میں ابھرتے رہےہیں تو کبھی معاشرے کے مصلح بن جاتے ہیں۔
اے کاش ہودبھائی صاحب اپنی پوری توجہ اور توانائی فزکس پر مرکوز کرتے، معتدل مسلمان ہوتے یا مذہب کے متعلق نیوٹرل ہوتے۔
Why not lecture in English ?
Prof. Satyen Bose tried teaching the subject in Bangla. The experiment ended with him