Inside Black Holes | Leonard Susskind
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- Опубликовано: 23 ноя 2013
- Additional lectures by Leonard Susskind:
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Working Group on Issues in de Sitter Space: • Working Group on Issue...
Butterflies, Complexity, and Signals to Bob: • Butterflies, Complexit...
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Find more lectures by Stephen Hawking, Edward Witten, Jim Gates, John Preskill, Sean Carroll, Joe Polchinski, Nima Arkani-Hamed, Donald Marolf, and many more on my channel / aoflex
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Leonard Susskind
Stanford & KITP
Aug 25, 2013
'Inside Black Holes' lecture given by Lenny Susskind at the KITP Blackboard Lunch.
Coordinators: Raphael Bousso (UCB), Samir Mathur (OSU), Rob Myers (PI), Joe Polchinski (KITP), Lenny Susskind (Stanford)
Scientific Advisor: Don Marolf (UCSB)
Video can also be found here: online.kitp.ucsb.edu
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You know you're a boss when you can rock a lecture off the top of your head in gym shorts.
@Joint StrainI think the point is that this guy could whip out a lecture wherever and get his teach on...I respect that
Robert Curran ....to a group of Astrophysicists, and other scientists 😂👍
Crack
HEY! The man knows comfort, and practicality. It is unnecessary and inefficient for him to wear a suit and tie for what, to stand in front of a chalkboard and talk to a bunch of college students? IMHO it would be fine if he walked into class wearing a goddamn bathrobe and shower sandals.
yo name cum ??????? ;))))))
Casual Friday To do list:
1. Do some laundry
2. Get the Groceries
3. Walk the dog
4. Jogg
5. Give a lecture on Quantum Physics
6. Grab a cold one with the Bois
Best 1 yet
I don't know how this guy manages his time between being a hitman for Walter White and giving these lectures
LeadingWay Epic
Brilliant
He treads c
Hitman??? explain...
He looks, and sounds, a great deal like Mike Ehrmantraut from the tv show "Breaking Bad" and "Better Call Saul." It's amusing to imagine a world class physicist moonlighting as a bodyguard.
Did I search this? No
Did I watch it?
Yes
Did I enjoy it?
*_Definitely_*
I am very flattered that you-tube recommended me to watch it, makes me feel smart.
Did you understand it?
@@JuankQuinteroMejia yes & no
I didn’t understand even 10% but still watched the entire video
@@ecmpinky7772 same here
When you gotta teach quantum theory at 6 but dunk on Daquan at 8.
when youre passionate about coaching your kids soccer team but you need some real income
Lmao
lolololol
lol
this comment deserves an award of some kind
Hundreds of thousands of guys listening to what a guy with shorts and slippers have to say and he´s not a football player.
This is what respect should mean.
Hundreds of thousands. That is really great. Didn't strike me until you mentioned it.
Because of the audience do not respect him by eating during the lecture, that's why he can afford to yourself lecturing wearing that funny shorts and slippers. The country in which nobody respects each other
If you're going to criticise the man, criticise what he says not what is is wearing. That is so shallow. He is obviously a lot smarter than you.
+hydrologist86 or maybe just a casual environment? sounds like your country is full of fucking squares
wait i just kinda proved your point 😂😂 i guess with a username like mine i've kinda lost before i've started there
These are the kinds of videos you only watch after midnight when you should be sleeping..
MotoCzar bro it’s 2 am, this comment hits hard
...if you are an idiot
Because we are all trapped in the thin layer
Did you see Joe Polchinski here
like im doing right now 🤦
The cameraman is moving the camera by throwing batarangs at it.
For real tho
its a machine operated camera
Some real Jason Bourne camerawork there
Shush, he was busy taking notes.
You can tell how well a person understands a subject by how easily they can explain it.
If you can't explain it simply to a 7 year old, you don't know the subject matter well enough. --Einstein
@@qpwodkgh2010 that was feynmann
@@qpwodkgh2010 it's quantum mechanics, I don't recommend it to kids also i think feynmann was a great teacher but he also won't be able to explain the mathematics of QM to a 7-year-old kid, unless that kid is a born genius.
Sometimes. Other times people understand something so we’ll but they aren’t great at explaining it in any other terms understandable by others.
This guy Leonard explains physics better than most people I've found on the entire internet. Thanks for taking the time for the impromptu lecture. Seriously better than most planned and scripted videos I've found on black holes and quantum physics
God: do not eat from the tree of knowledge
Leonard: so anyway, inside black holes..
The camera man is great! He knows what we want: sudden panning 👊🏼📹
Psysicists can't pan. It's one skill or the other. But not both.
A true talent of communicating physics. I could listen to him for hours with interest. This is really good stuff
i know some of these words
That's the way they want it .... TyrantTitan .... It is bullshit, don't believe any of it
@@chazzlucas63952+2 is gonna be 4 whether you believe it or not
@@chazzlucas6395 I don't understand it, therefore it must be bullshit. LOL. Way to go through life.
TyrantTitan. Be honest, you were looking for Darkthrone and accidentally found this lecture about black holes.
chazz Lucas it’s not bullshit, it’s a very hard topic to grasp, they are trying to simplify it the best they can. If you don’t understand then I suggest to go look at some basic physics lessons and improve, this is way too complicated to understand for you right now.
Brilliant ! Leonard Susskind is making me understand stuff I wasn't even aware of.
Touch the camera again. I swear to god. I'll take it away from you and lock it in my car, Steve.
ha ha ha ha ha
I sure like Leonard. A very nice person. Fun to learn from.
Susskind's book, "The Black Hole Wars", is one of the major factors that encouraged my interest in science in the first place. Regardless of what some may think of the man's idiosyncrasies, he's a hero to me.
This was awesome. Thank you so much for the upload.
Brilliant intro into the fascinating topic!! Thank you!!!
Thank you for the video upload.
Very interesting lecture, and intelligible to anyone who has a basic understanding of physics and cosmology. Susskind is brilliant.
Fantastic Susskind ... One of the greatest theoretical physicists of all time who lectures in shorts and t-shirt .... simply wonderful !!!
Such a beautiful video. Full of light in many ways!
Computer science graduate here. I had very little info on black-holes and after watching this video i'm pretty confident that i can talk about it. What a great teacher
I'm gonna admit it, I am touched by this presentation. This is the very beauty of the human race. Intelligent people working together to understand the world they live in. keep learning!
This has got to be the greatest lunch TV I have ever seen!!!
*Thaaank you for uploading this!* Awesome video! 😊🙌🤩
Prof came straight to the class from his morning jog.
Adarsh Raj physicists aren’t the jogging kind.
@@jaykay2218 its a joke
@@sahil3038 yeah ik. Mine was also a joke.
@@jaykay2218 lol r/woosh for me xD
I have watched a bunch of Susskind lectures. I thought I had gotten to the end of his points with the holographic /black hole angle. Now he brings in an entirely new physics. Just amazing. And very easy to listen to, in the Feynman model.
I remember watching this a while back, and taking notes on it. Very great lecture
I actually learned things from this. One of the few presentations which was at an educated layperson level!
I really got distracted by the guy on the front row, with a sub in his hand and a black hole in his stomach
Seems like someone could've dumped a bucket of ice water on the creep.
How about the guy not wearing shoes wiggling his feet.
21 min
@@thenrepeat9124 Can the guy not eat his sub without being called a creep?
@@thenrepeat9124Imagine letting those sexually deviant sandwich-eaters... near our schools! THINK OF THE CHILDREN!!
_THIS_ is a perfect example of pure confidence from someone who without a doubt knows their sh!t: Totally underdressed yet doesn't give a damn what anyone thinks about it and ALSO being able to "wing" an hour+ talk after being given two days prior notice on what is a barely comprehensible subject. We should ALL strive to achieve something in our own lives that at least RESEMBLES what is seen here.
I love your enthusiasm. And I wish I shared it . . . in my opinion, this style of presentation falls way short of earning your level of admiration--though I totally agree he knows his field. If you have time, try a "Cool Worlds" video from David Kipping, of Columbia's astronomy dept. He is my dream professor. I'd very much respect your impression. This is one of his best videos--
One of the best lecture I've seen on internet ❤
Thanks for coming in Leonard
man, what I would give to sit around a table eating lunch and discussing black holes with other people who are interested. thankfully this was recorded
Very interesting lecture, wonder how much progress has been made since this lecture
What a brilliant man teaching a brilliant lesson
I only stopped by to watch for a minute, got hooked, what a great explainer of some crazy physics.
In less than 5 minutes, you learned 90% of the people commenting were not listening to the video.
I did keep scrolling up and down waiting for the chalk to start going onto the board and noticed that. Its a mixture of smart and dumb comments. I did notice that the guy wearing the sandals took them off at some point around the 20:00 mark... haha
My god Your right.
Well it's hard to hear, the audio was recorded on a deaf potato obviously.
I was and it is all a bunch of fabricated lies.... Gravity, Relativity and everything claimed by "Science" over the last 200 years is 99% bullshit..... Wake up and do your own research
chazz Lucas hahahahahahahahahaha
I have several books from Leonard Susskind, amazing phycisist
Great looking into something so amazing like that of black holes. Professor Susskind is amazing.
Fantastic lecture! What a teacher!
I've watched this lecture, at least, 12 times. The way Leonard Susskind, succinctly, connects information into a cohesive idea is beyond incredible.
This man seems to also be a gifted teacher. In the utmost respect.
Leonard is a genius. Could listen for hours
What a boss. I wish I had taken his lectures when I was at Stanford.
I enjoyed listening to this while doing other stuff. It was similar to my college experience in so much as my brain was elsewhere while smart people talked.
He isnt the best teacher. Like most colleges, they hire super smart people who know their shit, but unfortunately a lot of them are poor at communicating complex concepts.
@@Scorch428 I disagree! I have watched a couple hours of RUclips (shorter intro videos on string theory, entanglement, black holes, etc) and i obviously don't know as much as him, but i consider him very interesting and actually a *great* lecturer. Especially considering that this appears to be a special topics one-off lecture, not a course. It serves to give a primer in 1 hour and pique interest in the subject.
God I love this guy
Thanks for keeping it simple.
This is beautiful & he is brilliant
I could listen to Susskind forever. He's brilliant. Anyone who held court with Feynman is a hero of mine. Feynman liked him too. His Stanford RUclips series are fantastic!
watch them all the time trying to get a handle on the maths of classical mechanics lol
koldfushen Seriously? Please cite a reference.
koldfushen I repeat - cite a reference. That's the way science works right? Otherwise shut up ;-)
koldfushen Well I'm a scientist too. Please leave Richard out of this discussion if you cannot back up your claim. Richard would want it that way. You know I'm right ;-)
koldfushen Okay - I'll miss you...
2:12 legend has it he is still trying to turn that page.
probably stuck on pause.
hahahaha this comment made me die! underrated !
Dear Professor Susskind, thank you for the marvelous lectures you used to deliver. All are great. I have a question about the final state of the black whether it reduces to zero or to Planck mass. I have a theory that says it reduces to a Planck mass.
This is cool! I will read on it later on when I have some free time.
as a layman, he made it very easy to understand. the mark of a strong professor
I understood a lot of the words but very few sentences in this lecture. 10/10 would watch again.
LOVE THIS I ALWAYS REWATCH BACK FROM 2018
16:10 Here we’re trying to understand acceleration; we have a funny situation ...
that requires meditation; or we’d suffer constipation.
Susskind, the treasure of a nation; most others mere regurgitation.
Front row sandwich fidget frustration; Breaking Bad hit-man confrontation. Ocean and body acidification; steady camera congratulation.
Bit Finesse
Massive time dialation, constant conceptual preoccupation;
Yet consumed we are by the TV stations.
SpaceX and hopeful inclination to space exploration; seems we are a dying nation.
Stumbling upon Susskin is quite the revelation, when you become aware of your station in the equation. The temptation to revel in security of false salvation is one to be reckoned with, not taken for a fools paplation.
@@DylanZapf-dm4mh Bit Finesse this is a very interesting semantic exploration
of your superb creative imagination
rising from my deep slumber of mindless procrastination,
i am writing you this note of appreciation
but please forgive my excessive dramatization
as i present this note as a compensation
for my lack in literary education
S is used in entropy I believe for "state of the System"
Oh nice, didn't know that
Excellent lecture by the way thank you
it's amazing to me that people who think and work on this stuff daily have the ability to function at this level lollike where they are some how integrated into society to point where they are useful to themselves and others around them quite incredible really
14:00 We love you too, Dr Susskind - XO
I watched the whole thing and It was awesome!
It's also very mind boggling that these things actually exist... A hole, or a brick wall in reality itself! Sounds magical and intriguing... Reality seems to be far weirder than any science fiction writer could ever imagine!
My favorite teacher.
this is so chill lecture
i know little to nothing about physics yet i'm watching this at 4am
2am for me
Reading and replying to your comment at 4:00 am.
2:09 am
2:36
Landon Ton 9:45 pm
Ya know this dude is the big daddy when he strolls into to give a lecture on black hole mathematics having done no preperation.
oh, what an excellent introduction. I'm exactly at this point, me too.
well, going back to listen now
I'm getting addicted to the Prof's lectures :)
I love how he's doing a lecture like this.. In shorts.
Best sanwitch ever
For a fuller and amazing description of all this without the math read from CH-24: www.amazon.com/dp/B07JHFDLSC
Thanks and respect !
In the Penrose diagram of a single black hole it seems to be insisting on the idea that a free falling observer through the event horizon will hit the singularity fastest and a constantly accelerating observer will hit the singularity after a longer amount of time passes. What I'm wondering is, is this the case still if your constantly accelerating towards the singularity, or better yet, is there no actual coordinate point to the singularity but instead a singularity dependant on time and not coordinates? Because it seems to me that in the Penrose diagram after passing into the event horizon the spatial coordinates seem meaningless, as no matter which way you accelerate you reach the singularity at the same time as long as your acceleration is consistent in all directions.
Can someone clear this up for me?
Was that Sean Carroll's voice I hear answering some questions near the end there? Same voice also said B ~ at 1:03:35
+Ntnher Doesn't sound like him to me.
That certainly does sound like Sean.
These days, I have trouble getting to sleep, so I've made a habit of watching this video before going to bed , and it helps me a lot.
One of the world's greatest Cosmologists and Teachers!!
Colin Dowson I thought he was a string theorist?
nakedshadows
He is one of the founding Fathers of String Theory but Cosmology is about Origins: Loop Quantum Gravity and String Theory are the leading Contenders for the TOE and origins of the Universe!!
40:18 interesting. so you could probe the interior of black holes with quantum entanglement? but more importantly does that mean that if the observable universe was the interior of a black hole, then we could probe the exterior.
It seems that He got out of bed, grabbed a cup of coffee, and went directly to the classroom !!! :)
lol beast mode lol always enjoy Leonard's perception on things.!! thanks for this video, awesome share!!!
i am amused with the simplicity and the way he explained,
Leonard is like yoda of the science world
Wise, smart, awesome and old
The father of string theory is bad ass!
Dr. Susskind is the best.
SUSSKIND YOU ARE A LEGEND
Agreed! The big bang just may have been a supernova explosion. I also think that in terms of black holes and quantum physics, size does not matter at all. Remember the movie "Men in black" where Orion the cat was wearing a small jewel containing a galaxy.
I love how in the comments we talk about anything but what the video was about, haha! Look at that guy's sandwich, casual wear, love that guy in the corner studying his lunch box..! lol
+JediMasterOW I watched this bird eating a piece of bread the other day. It was wholemeal bread, not normal white bread. Wholemeal bread is almost $5 a loaf at the moment. Clearly the fluctuations of the price of petrol are annoying. I ride a motorcycle, it has two cylinders. One day I would like to buy one that has four cylinders, not because I will go faster, on the contrary increasing engine mass you reach a point of diminishing returns from the weight. Squares have four corners. I am currently wearing two pairs of socks because it is winter here.
Must reflect what the new Generations care about. Judging everything instead of paying attention to what's important
>Squares have four corners. I am currently wearing two pairs of socks because it is winter here.
Earth Has 4 Days In Same 24 Hrs., 1 Day God Was Wrong. Einstein Was ONEist Brain. Try My Belly-Button Logic.
JediMasterOW because RUclips is filled with morons
I like how he actually has a black board.
Thanks for the kind sharing
Loved this video!
Wow. This is what I must look and sound like to my kids.
We should be so lucky.
xD
Get him on JRE!
Photon sphere is the stretched horizon around the black hole, and if you take the circumference of the photon sphere multiplied to Boltzmann’s constant divided into h*c, it will give the photon temperature. Photons which have this wavelength that equals to the circumference of an object are what I like to call winding or circumferential photons.Try taking the momentum of a photon which has a wavelength equal to the electron circumference divide it into the electron mass multiplied to c it will give the fine structure constant. Divide the electron circumference by alpha, you will derive the electron Compton wavelength. In my opinion this is why the fine structure constant exists because it was necessary in decreasing the wavelengths of high energy photons to help them undergo photon pair production from energy into matter.
Interesting. Excellent Lecture.
"Number one, I'm unprepared."
Me (looking at his shorts): No shit, Sherlock.
Lenny always wears shorts and black t-shirt.
Because everyone knows that a proper understanding of black holes requires a nice pair of slacks.
IF you where a proff, you could wear what ever you like. It's the brains not the suit that make the man in physics.
ILiveuDertHeBrige In academics, clothes, hair, even your socks don't matter. Our biology department head wore tie-dye all the time. He looked exactly like John Lennon with more hair, and he was also good friends with the Japanese royal family. He dressed up when they came to visit; in tie-dye.
mrspidey80 clearly he doesn't skip leg day
This is making me hungry
I'm hungry, but it's only partially related to the video.
facepalm this comment reminded me of my food in front of me
Awesome lecture.
Interesting. Excellent Lecture. I wonder what conditions favor entanglement. I am assuming for example we create an entangled pair in the Lab. This must not happen all the time.
I dont know much in this area just a beginner. Could B not be entangled to B prime in the black hole. What would this violate.
This would entail a highly entangled system in the black hole.
Lol this dude's lectures always seem so unrehearsed.. still good