Chethan Krishnan, Lectures on Quantum Black Holes. Lecture 1

HE390 - Black Holes, Holography, and Quantum Information
Instructor: Prof. Chethan Krishnan, CHEP, IISc

[@phoneix24886]

Cant believe this kind of knowledge is available for free. Bless the internet and bless human technical innovations.

[@sneheshtalukdar4345]

Thats because unlike IIT apne ko 1 Cr ke package nahi chahiye

[@warping_gravity_singularity_0]

Thanks KZbin for suggesting this masterpiece 🔱❤️‍🔥👑

[@madhavbhamardiwala1606]

Fr.❤

[@rayanghosh2701]

Exactly

[@Hfahajayshh]

​@@strangobard7885 Plss tell me how can u read the mind of commentator just by reading their comment U can waste ur time for this lecture ❤ Rather than wasting for Reels🤡

[@ishitaaaa5134]

Pehle 9th ka paper toh dedo

[@warping_gravity_singularity_0]

@@strangobard7885 arey bhai itna kya gussa ho rhe ho bematlab k, mera interest hau is topic pe Research karne ka hence mujhe samajh bhi aya hai, I am not a dumbass like you commenting shit on other's comments! KZbin suggested me this bcoz of my algorithm bcoz I watch such videos and study about it coz I will pursue my PhD in Cosmology area primarily focused on Black Holes and Topology of our Universe.

[@mirtehseen4909]

As a student of science it's very complex .it's all about imagination But the fact is any student who understands this is genius ❤

[@UROOZFATIMA190]

Yeah! as a PCM STUDENT I KNOW SOMETIMES IT IS TRICKY AND very sometimes it's HARD AS WELL..NONETHELESS WHAT I FIND IS THAT THE MORE U GET DEEPER IN THIS THING THEN U FIND THIS as SO SIGNIFICANTLY BEAUTIFUL AND SO COMPELLING TOPICS WHICH UNDERLIES THE DEEP STRUCTURE OF OUR REALITY THAT'S What our REALITY IS ..MOREOVER TO KNOW ABOUT OUR GIGANTIC MYSTERIOUS OBSERVABLE UNIVERSE AND SPACE .. AND UNDERSTANDING THE EQUATIONS MADE ON GREAT THEORIES IS INDEED EQUALLY SIGNIFICANT THING THAT I LIKE (AS A MATHS AND PHYSICS STUDENT WHO LOVE TO STUDY) THESE KINDA COOL STUFF AND WHO LOVE TO IMAGINE THESE THINGS🚀✨

[@animenmusic16]

BSc physics is a thing of beauty@@UROOZFATIMA190

[@sakshikhatak1027]

I am from a poor village of india .cannot afford education like this .but with help of internet .i am going to to understand black holes and QFT..deeply .

[@futureshine2715]

Dear student u have to clean iisc entrance . nothing with poor or rich

[@mayankgoyal4595]

Bhai iisc is easily affordable. 50k for 4 years is more than reasonable. If you are getting selected in iisc you would qualify for inspire scholarship too as most do. So you pay basically nothing.

[@roops2939]

Just learn a skill with your hands like crafts , carpentry etc. This quatum kind of "education " will not necessarily mean high salaries. You will always have income if you can work with your hands.

[@mayankgoyal4595]

@@roops2939 are you from U.S. or any Western country man? It's hard to live on the mentioned jobs in India sadly.

[@saurabhpradhan6603]

If you clear JEST the institution like this pay you to do msc and PhD. I am from a village and poor too. But went through this .

[@snigdhadas4867]

Some board, chalk and talk can be interesting if the teacher is adept at capturing attention of students. It's a skill only the best of teachers master in their life..... this teacher constantly speaks sense and connects to students too ...a very nice lecture.... without digitization of this lecture, a middle aged faculty ( specialization in biology) like me wouldn't have got the opportunity to attend this lecture.

[@KRISHNA-dt9kx]

this video is not a comedy video, crime video, or an AV yet my eyes are glued to the video that is the beauty of physics and in that "black holes" is an interesting topic

[@Rumiesque]

0% naked women 0% bad words 0% a$$hole 100% black hole

[@dtm2911]

this guy said AV 💀💀💀

[@NAVEENKUMAR-xl4pb]

Excellent way to experience higher level of knowledge!!

[@messimagic619]

I'am not a science student, yet I am watching this lecture.

[@johnbhai324]

Ohh wow we found Stephen 2.0

[@messimagic619]

@@johnbhai324 Not sure I'm quite at Stephen 2.0 level yet, but I'll take that as a compliment! Just here to learn and enjoy.

[@mukeshtiwari1095]

You are just increasing the views on this video😂

[@mukeshtiwari1095]

You are just increasing the views on this video😂

[@messimagic619]

@@mukeshtiwari1095 Guess I'm just here for the free brain workout. Gotta keep these neurons active!

[@seer1966]

These are excellent lectures. World class and the best of the best. Prof Krishnan is covering very advanced topics with great care guiding the student step by step. I have never seen any Professor address so many student questions in the class with so much patience and still making so much progress in each lecture. The caliber of the students is obvious from the questions they ask. One does not have to be a genius to understand these things. If one has a good physics background and great enthusiasm and hunger to learn these topics, it will be a breeze.

[@nakshsanson9518]

KZbin suggestions finally understood what I want.

[@hrmg24]

Knowledge isn't free,you have to pay attention

[@priyanzhu]

This quotation is attributed to Sir, Richard Feynman

[@Bollsman]

2:35 the guy that found pi formula

[@abhisheksoni9774]

Wow 😍

[@prabhakarsingh6821]

Oh yeah

[@pr4njal]

woah

[@nevinthomas3199]

Oh bro what an observation yeah that is him

[@somethingsomething2825]

what , pls explain

[@shivajidesai5354]

Quantum theory says the matter exists in small energy packets whose position can't be ascertained. Theory of relativity says irrespective of observer's position in space, the speed of light is constant.

[@footballnewscr]

thanks for this lectures , we want more lecture as an astronomy enthusiast

[@TusharRanjanMalik]

MATHEMATICS RULES THE UNIVERSE..........😍😍😍

[@swajju]

I'm not even human but watching this masterpiece

[@Hero007ization]

I wish my college professors could teach this way !

[@newbiekhyber]

This is IISc.

[@nikhilsharma32907]

Your college professors just turn the slide in projector

[@venomousshooterrony5405]

See how calm the environment is unlike a third class private college class where a professor will give you at least 10 minutes lecture on being late in the class even by 30 seconds 😅

[@shyamasundar8820]

Iisc is premere institute. But compare to other CSIR laboratories it is doing lot of work in basic and applied science.

[@digdogma]

me who have never even been to school, and look how youtube suggesting me this 😢

[@stoicR]

Where are you from

[@zoromarak8039]

@@stoicRuttar pwadesh, canada.

[@KRISHNA-dt9kx]

surprisingly surprised

[@ashokkumar-id4ne]

@@zoromarak8039 phulera,United state of america

[@KPISEASON353]

Why you never went to school?? Very few people do that in the world

[@krantiroshansharma3849]

Man , I miss chalk board classes .

[@Meghnaaad]

yep, it sounds satisfying

[@aadityapratap007]

This is what I crave for.

[@msobert4]

wanted to involve in this type of programs , hope can do this in next life only

[@dunamis8639]

People thinking it's for beginners😂😂😂 Bruh he's teacher to ISC Bengaluru students. So if u don't understand don't complain. Just watch and leave whatever you don't understand if u r not into physics like me here😂😂😂

[@Gauravkr0071]

i am a software engineer , but still for fun i am watching this.

[@satundhal6477]

Great 👍 sir 😊

[@pradipkumardas2414]

Frequent cross movement across the board ( frome one end to other end) by the Professor creates a hindrance for concentration on the topic delivered. However, it is interesting to listen the lecture on Black hole.

[@natureatitsbestplace]

With due respect to the Revered Teacher, thanks for your efforts. But There are many ways by which you can make this so confusing topic , intresting. 1) Integrate visuals,digital medium, virtual reality,etc. 2) It would be great if you take some preliminary extra lecture on prerequisites, this will easy your burden of future sessions, and help students a lot. 3)Sorry to say , but you yourself need some more clarity on the topic, expected doubt and questions. Discussions on this topic is generally full of questions, answers and then counter questions but here students are so confused that they don't know what's the correct question. 4) Aim of each lecture and its out come must be clearly stated. 5) Instead of writing on board,it would be better to use systematically arranged slides with respective examples, limitations, assumptions,etc. This will helpyou to cover all the related topic without missing or forgetting any and will help students clearly understand. .... .... IISc is the great place and so do there teachers. You are the True Krishna for the comming generations Arjuna....!!!!🎉🎉🎉🎉🙏🙏🙏🙏

[@Universon-wi7mx]

were you one of the students there, Are you a physics professor That teaches in prestigious institutions like iisc. You actually have no right to tell him all this

[@comptech5240]

@@Universon-wi7mx why. he is a student and has utmost right to get quality education whatsoever. Stop with this conservative attitude of never questioning someone's ways. No respect is lost as such, instead if the teacher is good, he/she would feel that the student is invested in the topic and hence wants it better delivered

[@Universon-wi7mx]

@Gautam-p3l 😇

[@Universon-wi7mx]

@@comptech5240 Sorry if I was offensive, but studied there, from the same teacher once. He was good. I just shared my point of view.

[@comptech5240]

@@Universon-wi7mx no harm done. Just wanted to state a point 😃

[@PragyadityaDas94]

Arnab Priya Saha casually walking into the talk! What a genius

[@annaczgli2983]

I play these lectures to sleep. 10 mins & I'm out. Thank you for uploading. 🙏

[@hassanmirza2392]

Hello and Thanks from Pakistan.

[@prabhakarraoarikapudi2027]

Class is like a bus stand...students r coming in late...going out freely

[@newaccount-cz6tb]

I have quite an interest in physics and chemistry. I think i can contribute to the country but i am confused about my career paths. Is doing research in this specific field in india is worth it. Will the amount i will earn sustain me and my family. This was my question and i hope i find some answers from seniors present here

[@kajubarfe]

My concern too

[@Thinker2156]

Yes its worth it. There many research opportunities available at Indian research institutes right now.

[@RishiRaj-bl8yx]

28:10 sir you have written the Schwarzschild's solution wrong there should be c^2 in multiplication with dt^2

[@sandygupta4545]

If you could point out this silly mistake from this amazing lecture, with some couple asses of your kind liking you, it tells everything about your anazing life!

[@himanshudixit5711]

All Hail KZbin algorithm for the recommendation. ❤😍♥

[@YogeshGhatte2011]

Thanks for this wonderful lecture record and sharing

[@SovereignSocialistRepublic]

If he teach I'll learn all subjects

[@Empfile]

Masterpiece !!!!!

[@aniket31415]

I'll join IISc banglore next year for sure❤

[@ritikgupta5836]

Best of luck.

[@iamnotcaptainyt4953]

Bro if i had time and the understanding of all the prerequisites i would just watch all the lectures , understand them and spend life solving those equations

[@muthuselvi9556]

Damn dude, same!!

[@thextreme6122]

Does IISc students not ask question when they hear about new things?

[@ChannabasavaGouda]

Prof explantion been like Inbuilt x2 speed

[@mitheshpatel6806]

Thanks utube fr suggesting this

[@RahulY-o2m]

This is the kind of thing i recharge my phone for

[@naveenbhatt4745]

masterpiece lecture sir

[@Notsoperfectshrikant]

Professor, why are we having variables applicable in local system(known environment such as Earth and some millions of kilometers around Earth) on unknown system(I don't know whether it should be called a system, the black hole I mean). BTW, I am no way related to Quantum world and astro bodies' studies.

[@Lonewolf123go]

Then why are you here ?

[@Notsoperfectshrikant]

@@Lonewolf123go such warm welcoming response, thank you!

[@henlo5453]

because aak is pak, pak is aak so aak pak karepak

[@letstrytodoit]

😂😂😂😂​@@henlo5453

[@manuupadhyay1635]

I apologize on the behalf of the replies to your (a very good) genuine query. You see, the physical laws being invariant under coordinate/frame transformations is one of the many suiting assumptions that we make before going on to formulate theories to explain some very specific phenomenon observed in the labs or telescopes. This way, we get a framework through which we can study general phenomena or hypothesize experiments, observe results and verify or revamp the existing theories. Most of the times, these theories, with their reasonable assumptions, conform to the experiments/observations with very less deviations and they go on to become the guiding beacon for our future understanding of various other events!

[@aryamangogoi6764]

This lecture is for which year student at IISc?? it is UG or PG class?

[@GuzzarAwan]

I dont think IISC has any UG courses

[@aryamangogoi6764]

@@GuzzarAwan update yourself, it seems you are still living in pre 2011 era.

[@Thinker2156]

Pg class

[@anshul021]

like how he say 'generalativity'

[@user-og2lt8ou8i]

I don't understand, why these students are coming late being in this prestigious institute? Missing introductory premise for the further study... Institute must take some measure!

[@BiologicArrow4]

Bhai, they are iisc students, I think they know some basic of their subject

[@letstalksciencewithshashwa9527]

kya pata traffic jam ya koi aur cheez

[@kushajkumar6313]

Chal phut its college we are adults our choice

[@afsarrashid2967]

Thank you...❤❤❤

[@PankajKumar-vi6rp]

Great lecture.❤

[@Rakeshsadhu007]

iiserssss❤

[@ChepparaBabai]

IISc is different boss

[@VRAJCHAUDHARY-b9r]

can it be an catastropic event 54.20

[@DimasaKing]

I wish this vid never reaches Gen Asthana. Or this will figure in next SMT update😢😢

[@eshangarg9031]

instead of propounding the concepts like this it is better to involve the students and discuss and discover the concept with them walking them by hand. Not many geniuses can born through the way education is taught now in our country

[@adityapanda_2000]

I think you don't know what kind of students study there. India's best top 50 are only able to make it to iisc

[@sirisaacnewton69]

@@adityapanda_2000 top 50 huh

[@bossdom1997]

​@@sirisaacnewton69ya

[@subhamdas3731]

It's a PhD level course given in the world's no1 research Institute and you need a decent understanding of the prerequisites to understand it. In this lecture, he was simply using the prerequisites to explain certain facts.

[@starshine3702]

That is done in lower classes where hands-on experiences are given priority over lecture methods. What are you expecting here lol most of the topic here is abstract untill it gets proved what do want professor to do lmao

[@AgastyaSharma-h9b]

as a JEE aspirant, giving the exam in 2025, this blows my brain to a different extent, like above the jee adv level

[@I_am_Dipanjan]

Please learn how to think beyond JEE brother. This education system has corrupted your mind to become oriented into just problem solving like a computer. I wish you well.

[@manishsingaria3895]

Are you comparing everything with jee advance ? Thing is jee advance level is similar to what you will get to study in first 2 year of graduation in engineering/bcs physics/ bsc chemistry.

[@I_am_Dipanjan]

@@manishsingaria3895 Not even first 2 years bro. I am a 3rd year BSc Physics student and JEE adv. became bread and butter for me after the 1st year of BSc.

[@heheboi366]

This thing is more interesting than your JEE Advanced, trust me

[@VolatileGuy103]

why am i here and how did i understand everything he said. ps- i am an MCA student

[@akshu9934]

same here, an mca student ended up here while watching a leetcode problem lol

[@Shubham-f1y]

You clear nimcet ?

[@VolatileGuy103]

@@Shubham-f1y no

[@CatchMe-pt4ej]

Explanation is ok ,but need to go more into the subject rather than briefly on unwanted things 😉

[@NBSuperb]

Imagine learning all this and finding out we can't time travel or neither their are aliens

[@aritradubey1790]

Ram Ram🙏🕉

[@vaibhavsingh4555]

2:42

[@AnkitKhadgi-x3j]

Great

[@XoPlanetI]

"CHEP IISc" - you should expand this for global audeince

[@fgmfgm-o7e]

why i didnt understand the context

[@basavaisha9521]

CHEP - Center for High Energy Physics

[@yottahertz]

What camera is used to record this ?

[@karthikcind1981]

Is this chetan krishnan who studied at loyola school Trivandrum??

[@Gulshansays_]

You watched the full ? Then tell me outcome of the lecture.

[@LegalAdvisor-w4q]

Sir, your teaching methodology is motivated, energetic and insightful but too much movement before learners causes deviation of attention.

[@mohitanandjaiswal9293]

Please dont laugh at my question, i am a student of arts and very weak at maths, but i have always been curious in black hole, time machine etc can i watch this? Or i should give up..

[@sujathaontheweb3740]

Why limit curiosity? Maths doesn't have to come in the way of pursuing what you're curious about. It's not like you're making it your profession. Enjoy the other world, and don't let Maths scare you! Have fun! 😊

[@LMAO_106]

The reason i want to go to iisc

[@samuelwesley668]

is this an undergrad or masters class?

[@UmangBhardwaj-y6u]

Which sem is thim I am in BSC 1st sem at amu I can't understand anything

[@littlelilly7480]

KZbin algorithm is actually crazy

[@dr.rajnagarajan7711]

Please avoid pacing back and forth while lecturing, as it can be distracting. It would also be helpful to outline the key points when discussing black holes. Please inform the students that there is a prerequisite for this lecture. Additionally, create an online document that explains the theory of relativity for those who may not be familiar with the concept. This will ensure that all students can fully understand your explanation. Great lecture!

[@Positivity-u6c]

Vedio ka topic sahi hai lekin ise ese angle par rakhe jisse keval sir dikhe ate jate student nahi

[@AdarshGupta-hc3qv]

why blackboard is same as in 3 idiots movie

[@nischals.g1323]

what course in iisc is this

[@TrEndsmr588]

Don't know but this board is looking like the 3idiots ones . If agree like😅

[@niraj_nerd]

135k views hmmmm so i feel everyone understands Black holes now>?

[@satyadevmodali9068]

What are the prerequisites for this course?

[@tryit2136]

10:12

[@RomitChavan-wj8lu]

why can't he stand still

[@Chiavaccio]

👍👍

[@alileevil]

Just want to state that ChatGpt can do a better job explaining these concepts.

[@chadcad2158]

Chatgpt can't give a good explanation on boiling point leave alone this dumbo

[@rajat23ranjan]

the girl at begining walking

[@nothing.to69]

DO you hindi lectures on qunatum blach holes

[@iagreewithyou4328]

How shame!ess can you be to ask this?

[@pollyaich4559]

​@@iagreewithyou4328 wtf is wrong with u? go outside sometimes dawg

[@suvadipmazoomder28]

❤❤❤

[@flyingraven6887]

This is like the set of 3 idiot movie scene

[@xdfckt2564]

You HAVE to have that IISc t shirts dont you 😂

[@shepherdamedegunu3675]

I don't know why am watching this

[@huhj845]

0.75

[@RBlabs]

🕵‍♀

[@ArvindKumar-rl7vs]

I cant understand his speech

[@jrntrfanboii]

he is a mallu

[@Auxxxin.14]

He is South Indian use earphone with good sound then you will understand easily

[@johnbhai324]

@@ArvindKumar-rl7vs actually u don't need to..

[@NataNata-ur5bf]

​@@johnbhai324 💀☠️

[@cakewalk4602]

I'm from Ny i can clearly understood his pronounciation and what's he's teaching maybe it's just a *you* problem. my advice take more english classes or listen to more audiobooks.

[@caikayee]

Noice 🦀

[@sureline_]

why the heck I'm watching this

[@zenitsuagatsuma6894]

BLUD IN CHECK SHIRT THINKS HE GONNA INVENT NEW HYPOTHESIS OR THEORY AFTER LISTENING TO THIS LECTURE

[@mishrajyoti2828]

This classroom look like 3 idiots classroom ....

[@yuvrajsharma5956]

The worst thing I realized today is even IISc Banglore is so absured & outdated to use chalk & board system in 2024😢

[@streetfoodexplore9910]

Even in MIT they use chalk and board.Don't be amused.

[@lakshya9612]

Bro mit also use chalk , they also absured

[@GuzzarAwan]

well , some profs love to use chalk and board more than marker. Also these institutions r so good in india like ISRO IIT IISC bcoz they r RUN by Profs not IAS/PCS or administrators , the Profs in various position also get big discretion on decision-making even then u wont see any corruption charges , and Optimum use of Funds.

[@anubhabchatterjee4403]

Knowledge matters bro.... Chalk and duster is the best way to present....

[@aethist-ns6gv]

Much much better than scrolling through powerpoint slides. Chalks are better than even markers and are still widely used in even ivy league colleges.

[@anoopak2839]

Its too irritating for me that while delivering lecture he is walking left and right in front of the board. Any other felt the same?

[@dsrawat267]

Exactly.. totally distracting

[@texastexas4541]

Why does he speak so fast? I can't understand half of what he says. Is Blackhole mentioned in the Vedas?

[@ramachandrannarayanan6997]

Dear Sir, u r not "a faculty".( 'faculty' is plural.) U r a faculty member. Pl. tuck in ur shirt. Be formal in dressing and set a good example. U r not walking in a park. Pl. don't take it amiss.

[@martinpmaniputhenpurackal]

This lecture may be from Kerala i guss

[@felixgeorge1]

Iisc Bangalore