Brian Greene Hosts: Reality Since Einstein

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  • čas přidán 7. 05. 2024
  • In celebration of the 100th anniversary of Einstein's general theory of relativity, leaders from multiple fields of physics discuss its essential insights, its lingering questions, the latest work it has sparked, and the allied fields of research that have resulted.
    Subscribe to our CZcams Channel for all the latest from WSF.
    Visit our Website: www.worldsciencefestival.com/
    Like us on Facebook: / worldsciencefestival
    Follow us on twitter: / worldscifest
    Original Program Date: 05/30/2015
    Host: Brian Greene
    PARTICIPANTS: Gabriela González, Samir Mathur, Andrew Strominger, Cumrun Vafa, Steven Weinberg
    Introduction with Brian Greene 00:00
    Participant Introductions 04:25
    What aspect of physics is so important that you would tattoo it on your body? 08:05
    Steven Weinberg takes us from Newton to Einstein. 12:05
    What was the observational support for Einstein theories? 19:20
    Can Newtons ideas be extracted from Einstein's? 23:40
    What did Einstein think about the Big Bang? 30:58
    What did Hubble's observations discover? 33:39
    What is the biggest unsolved problem in cosmology? 38:03
    What is the history of Black Holes? 40:31
    Einstein's thoughts on singularity. 47:33
    What is a gravitational wave? 50:49
    What does a gravitational wave sound like? 57:52
    Combining General relativity and Quantum mechanics. 01:00:28
    Cumrun Vafa on String theory. 01:10:50
    Samir Mathur explains information loss at a black hole. 01:17:45
    Black Holes to Wormholes. 01:28:45
    Is the fabric of space time a physical thing? 01:32:24
    What is the one question you would want answered in your lifetime? 01:36:37
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Komentáře • 1,3K

  • @WorldScienceFestival
    @WorldScienceFestival  Před 6 lety +99

    Hello, CZcamsrs. The World Science Festival is looking for enthusiastic translation ambassadors for its CZcams translation project. To get started, all you need is a Google account.
    Check out Reality Since Einstein to see how the process works: czcams.com/users/timedtext_video?ref=share&v=3EOpHHjv5g8
    To create your translation, just type along with the video and save when done.
    Check out the full list of programs that you can contribute to here: czcams.com/users/timedtext_cs_panel?c=UCShHFwKyhcDo3g7hr4f1R8A&tab=2
    The World Science Festival strives to cultivate a general public that's informed and awed by science. Thanks to your contributions, we can continue to share the wonder of scientific discoveries with the world.

    • @nznegativeions
      @nznegativeions Před 6 lety +1

      daffy more pebkac

    • @gladysleon4395
      @gladysleon4395 Před 6 lety +1

      World Science Festival @ @ @

    • @jo-jovolkswagen7136
      @jo-jovolkswagen7136 Před 6 lety +1

      World Science Festival
      If what I see the world before and I knew that the statue all around the world they are all the just the bad example of people in the past , people ...kids in this present time should used the Brian and analysis with carefully not too hurt anyone else except yourself... the world is so cruel , bad ...selfish ...and very cold ...and it always be like that forever. Do you think these retarded kids need to have the better world? Or something better than what they are facing with? Do they screaming and asking directly to the world one by one ? Hell No, But they would agree with me in something if I saying out ...for sure... ask for more painful for your torturing ideas ... yes is what I would want ... make me more ....until turn me to be not weak and useless to be not human no more ... there is no God left in me ... that what I am waiting for , am I surprised you guy or u didn't expect what will come out from me ...
      Keep all the goodness with your people ok ... don't mixed with these kids like me ... if I don't go hardest as you I won't get the best from you ... I won't know how the world greasiest as well ... because there are so many bullshits in this universe... sorry that I used this way to see the world , people have just only one life .... not more than that ...I want the other human should know this very well . Not to say ... you can start to have to new life ... pause ...this ... because half of these people never gonna make it.

    • @jo-jovolkswagen7136
      @jo-jovolkswagen7136 Před 6 lety

      Do you know why I am so confident ...about life that I am inside now ? Because I see that loop....I can guess from what I am now ... I am sure that it has to be like that .... like a unknown powder that you love to used with us.

    • @jo-jovolkswagen7136
      @jo-jovolkswagen7136 Před 6 lety

      I know u love to see lot of the depress people who in the crazy hospital ...right ? What a beautiful images ....isn't it ?

  • @pigeonlarvamagoo8572
    @pigeonlarvamagoo8572 Před 8 lety +184

    I love brian greene, he is the one who is inspiring me to go int o physics. I cant get enough of everything he does

    • @HarryNicNicholas
      @HarryNicNicholas Před 4 lety +4

      i think he wanted to be a magician, he just can't keep those hands still, someone give him a deck of cards please.

    • @jeupater1429
      @jeupater1429 Před 4 lety

      @@HarryNicNicholas jews and italians are very closely related genetically. Could be the reason hehe

    • @user-qf4tp2ix5v
      @user-qf4tp2ix5v Před 3 lety +3

      JeuϟPater whaaatt?

    • @brendanmarcuz5744
      @brendanmarcuz5744 Před 3 lety

      Yes it's true. Simply amazing.

    • @Akchun21
      @Akchun21 Před 3 lety

      Gayyyyy

  • @GabrielaCambero
    @GabrielaCambero Před 4 lety +268

    It’s amazing that a mere 4 years later we have proof of gravitational waves and a picture of a black hole 😍 what’s next???

    • @rayagoldendropofsun397
      @rayagoldendropofsun397 Před 4 lety +1

      Gabriela Cambero - Don't think you're aware that GAS BONDING has totally DEBUNKED Gravity.

    • @IDraganM
      @IDraganM Před 4 lety +12

      @@rayagoldendropofsun397 Gravitational waves were observed less then 2 months later.

    • @rayagoldendropofsun397
      @rayagoldendropofsun397 Před 4 lety

      @@IDraganM -
      Gravity started with Newton's apple downward falling motion, which is wrong.
      Truth of downward falling motion happens when active rising gases in free flowing motion bonds together making solids, trapping it's molecules motion within.
      Example: Atmospheric oxygen and hydrogen gas molecules bonds together making water, which is a state of solid motionless mass with its molecules trapped within, because of this, it's free flowing motion is lost, causing a downward falling motion known as RAINDROPS !

    • @terrywbreedlove
      @terrywbreedlove Před 4 lety +6

      Discovery of dark matter or dark energy maybe.

    • @oldschoolman1444
      @oldschoolman1444 Před 4 lety +14

      @@vitthalpatil1974 I think you meant worm hole, man has already found a warm hole. =)

  • @MrBendybruce
    @MrBendybruce Před 3 lety +30

    I don't mind admitting I have a huge man-crush on Brian Greene. He is such an incredible educator. He makes complex and seemingly boring subjects feel magical, joyful and funny.

  • @MIKEOXLONG-dm6jm
    @MIKEOXLONG-dm6jm Před 5 lety +161

    Einstein was figuring all this out in his mind while people were still traveling on horses, discovering & understanding time dialation & length contraction by doing thought experiments, at a time when spaceflight was but a dream. Genius doesn't seem to do him justice, & it makes Newton & all those others even more astonishing when you consider how long ago they were figuring out all the different laws of the universe, when man's knowledge & scientific understanding was so limited, extraordinary mind's that one can but appreciate, marvel & envy. Bravo.

    • @peterirungu4083
      @peterirungu4083 Před 3 lety +2

      There was steam power and railroads.

    • @rayagoldendropofsun397
      @rayagoldendropofsun397 Před 3 lety +4

      According to wiki the Wright Brothers were in flight in 1903.
      Einstein's was smart, but his Space Bending theory is impossible.
      Newton's Gravity do not enable motion !
      Mathematical concepts without physical evidence is not physics !

    • @akosseres
      @akosseres Před 3 lety +2

      @@rayagoldendropofsun397 Then what is the true mathematically consistent description of gravity?

    • @rayagoldendropofsun397
      @rayagoldendropofsun397 Před 3 lety +1

      @@akosseres There's none.
      All Newton's equations of motion fits perfectly with ENERGY.
      If there's one single motion that's enabled by Gravity here on planet Earth, please let me know !

    • @akosseres
      @akosseres Před 3 lety +5

      @@rayagoldendropofsun397 If you throw an object here on Earth in a vacuum then the trajectory is going to be a parabola... That's because of gravity.
      Also, the precise calculations needed to launch rockets and satellites into orbit would not be possible without mathematically describing gravity.
      Also general relativity perfectly predicts the motion of planets inside the solar system.

  • @77matius
    @77matius Před 4 lety +18

    Dr. Brian Greene is one of the best! Thanks for all your hard work, Dr. Greene.

  • @dapdizzy
    @dapdizzy Před 4 lety +14

    One of the best science speakers and an amazing personality, Brian Greene. So much respect to him. He’s one of those people who attract and make you view him as a role model even though I’m not in this “role model” concept overall. Like the Higgs boson that brings pieces together and makes mass matter.

  • @KP_Oz
    @KP_Oz Před 2 lety +4

    Brian Greene is the best moderator of science discussions by an inflationary order of magnitude!😍

  • @realcygnus
    @realcygnus Před 8 lety +202

    this channel rocks

    • @theforestero
      @theforestero Před 8 lety

      +realcygnus .YES it is easy to define ''Human''in behavioral ways (which correlate
      to biological and chemical((Genetic))forms.Humans ,in large
      populations,are always born with five fingered hands,and opposable
      thumbs..period...IF it's possible,to find a average
      sized''human''population,without ever having children born with hands or
      fingers,THEN the scientists would also find that same human population with
      different,or developing differences in their bio chemistry,mental-brain
      organ developments,and,most obviously..BEHAVIOUR...

    • @texasray5237
      @texasray5237 Před 8 lety

      +realcygnus
      Actually reality has weathered the rise and fall of Einstein pretty well. When his theories are forgotten reality will still be around.

    • @realcygnus
      @realcygnus Před 8 lety +3

      Heisenberg-SchrodingerEmc2 right......some ppl....I guess he thinks his GPS works cuz Allah made it so or something.

    • @JamesToupin
      @JamesToupin Před 8 lety

      +LampDoesVideogame Newton did not have a theory of gravity. Newton observed that the same force that made things fall to the ground also kept celestial bodies moving in their orbits. He devised laws as to what motions the effects of gravity would produce but Newton never considered what the force of gravity actually is. Einstein's General Relativity is a theory of gravity because it proposes that gravity is caused by mass distorting spacetime and objects traveling through the geometry of spacetime are affected by the shape of spacetime itself.

    • @EchoesDistant
      @EchoesDistant Před 8 lety

      +realcygnus That's because physics _rule_. ;)

  • @MyGeezer1
    @MyGeezer1 Před 4 lety +10

    Up until 3 years ago I was familiar with Brian Green. Because of utube and Dr Tyson I became aware of two more. I am now familiar with six leading scientists that I can put into my lexicon of science . I am a 72 year old disabled Vet who is thoroughly enjoying the internet and the questions science is raising. Keep it coming guys...

    • @khosKarm
      @khosKarm Před 4 lety

      Leon Clark Thats incredible!

    • @AisforAtheist
      @AisforAtheist Před 3 lety

      I love this comment. 🥰 so glad to see the beauty of the internet and exchange of information have a positive effect on someone's life. It's made an impact on me too.

  • @cupajoesir
    @cupajoesir Před 6 lety +16

    I never realized this but Brian Greene is an excellent host! Very well handled when others tried to talk over others. Great talk!

    • @robertansley6331
      @robertansley6331 Před 4 lety +1

      Remarkably smooth and well organized. All the media was spot on for the point being made at that moment. This isn’t edited but just recorded as it happened. They must have had some planning meetings, dry run throughs or something. I love watching any session where Brian is the host, as opposed to ***** who constantly interrupts.

  • @martin6ariza
    @martin6ariza Před 4 lety +54

    2 months after this video was published gravitational waves were detected. I love science.

    • @dannygjk
      @dannygjk Před 4 lety

      @UR Just Wrong ok so who is correct? Does either side have incontrovertible proof?

  • @naib5
    @naib5 Před 2 lety +2

    Wish I d meet him once in my life, Dr.Brian Greene

  • @Dr10Jeeps
    @Dr10Jeeps Před 5 lety +18

    What a fascinating discussion! I wish more people on this planet would listen to brilliant scientists discuss the natural world. As an aside, Brian Greene is an excellent host of these scientific forums. His ability to rephrase an expert's statements into more simple, less technical language is masterful. And finally, as a professor of psychology for 43 years, I have realized a passion for physics during the past 10 years. I just wish I could live longer to study this field in more depth. P.S. As we all know, gravitational waves have now been detected. How exciting is that!

    • @falconeagle3655
      @falconeagle3655 Před 2 lety

      After Carl Sagan, I think Brian is the second host who can talk to these scientists in this manner.

    • @thomasbramwell9592
      @thomasbramwell9592 Před 2 lety

      👋👋👋👋👍👍

  • @hansrudolf7212
    @hansrudolf7212 Před 5 lety +32

    I wish this group will sit together once more and talk about the same stuff , knowing that we now actually have the first pictures and scientific evidance of black holes and the ripple of time and space 😊

  • @yohanalaiser2667
    @yohanalaiser2667 Před 6 lety +24

    I have never watched almost 2hrs clip on youtube sacrificing my night sleep...and I am taking Bachelor of Doctor of Medicine like what am I doing here...but I can say Physics has found its Spokesmen...The ones I can listen to....bravo Brian et al
    Much appreciation from Tanzania

  • @rosenracht
    @rosenracht Před 5 lety +8

    Her prediction about when the first gravitational wave would be detected was on point.

    • @onderozenc4470
      @onderozenc4470 Před 3 lety

      Einstein predicted the black holes but not the gravitational waves.

  • @aerobroken
    @aerobroken Před 8 lety +10

    21 people currently do not like physics. This was great, but most all of them are on this awesome channel. It's a damn shame this channels videos don't get millions, and even billions of views.

    • @espaciohexadimencionalsern3668
      @espaciohexadimencionalsern3668 Před 4 lety

      some kind of knowledge you get from al beleave me i got a bit of all but all is allmost mine i love you all thanx - soon we all aprouch each other keep an eye on it you little dude.

  • @Stanman121
    @Stanman121 Před 8 lety +53

    I cannot thank you guys enough for your uploads and channel. You have been a source of inspiration and knowledge for the open mind and to those who want to see the world differently, more beautifull.
    Thank you from South-Africa. One day I wish to sit in the audience 😉

  • @MrAkashvj96
    @MrAkashvj96 Před 6 lety +6

    Prof Weinberg is such an eloquent speaker. Prof. Samir isn't far behind.

  • @mc-Hotsauce
    @mc-Hotsauce Před 4 lety +9

    She was right about receiving that signal using Ligo. Less than 5 years.

  • @NanDrummer
    @NanDrummer Před 6 lety +4

    Man what a panel of guests.

  • @gilmedicacolombia
    @gilmedicacolombia Před 6 lety +5

    Hey guys! You have to invite over Gabriela Gonzalez again! Great speaker, explains beautiful, and was really enthusiastic at her time.

  • @zelalemhabteselassie6575
    @zelalemhabteselassie6575 Před 2 lety +1

    i do not understand this complicated intellectual discussions but truly enjoying all of these incredible scientists talk

  • @asheshkafle4984
    @asheshkafle4984 Před 3 lety +3

    This was the best panel of WSF, everyone so down to earth and so lovely personalities 🌎

  • @jeffmckinnon5842
    @jeffmckinnon5842 Před 3 lety +6

    thank you science guys. These CZcams videos really get people thinking and you never know where the next great ideas will come from. Hopefully programs like this will help to seek out the next genius to fill in some more of the picture. I'd love to be a fly on the wall to see what the next hundred years will bring

  • @LarryFasnacht
    @LarryFasnacht Před 5 lety +2

    I could listen to Steven Weinberg all day. What an amazing intellect. I would love to take a class from him and can’t believe he is still teaching. I would love to know what he meant when he said that he doesn’t look at the pictures, they are misleading (or words that I interpret that way).

  • @the8rey
    @the8rey Před 8 lety +44

    steven when he talks and closes his eyes BEST PARTS

  • @3dgar7eandro
    @3dgar7eandro Před 2 lety +5

    55:55 I come from the close future and we have finally detected the gravitational waves:):) Just as Einstein predicted
    This is just what the worlds needs a group of people all over the planet talking about science in a calm manner.

  • @ericjane747
    @ericjane747 Před 8 lety +85

    These are my role models and people I deeply respect for getting to the root of it all.

  • @Quark.Lepton
    @Quark.Lepton Před 2 lety +2

    What an incredible line-up of brilliance!

  • @sadbutitstrue2323
    @sadbutitstrue2323 Před 4 lety +2

    Just in between 2015 when this was recorded and now 2019, the gravitation waves made due to two colliding black holes were detected and therefore proved and a photo of a black holes were taken.
    Such a wonderful time to be alive.
    Physics is so gorgeous and so exciting.

  • @dmanz007
    @dmanz007 Před 8 lety +9

    out of all the world science festival videos I've watched Brian Green is the best presenter by far. I wish the others were as organised and knowledgeable about the subject as him. The concept of getting someone in to host who doesn't know anything about physics is not a good idea in reality it just comes across as unprofessional and can confuse the listener.

    • @WendyRamrattan
      @WendyRamrattan Před 4 lety

      As bidarwi from bbc Nobel minds

    • @stellarwind1946
      @stellarwind1946 Před rokem

      He’s very articulate and easy to follow, even on complicated subjects. I always enjoy listening to him.

  • @TCA744
    @TCA744 Před 6 lety +7

    Good to see Steven Weinberg doing so well.

  • @IamMrBuddha
    @IamMrBuddha Před 4 lety +2

    5:06 .. "Prease" - I love Brian Greene, but I had to do it lmao

  • @francisjbalducci
    @francisjbalducci Před 6 lety +1

    In this presentation, Brian Greene serves as the perfect moderator because he offers a style that contains both the academic scholar and the "close friend." He is highly credible, and he is always fully aware of his audience's needs. The panel consists of today's geniuses in their fields, and they all performed spectacularly. The content included a huge amount of important material. The visual technology and platform for this presentation is superior and it was sharply executed. This is rather lengthy as presentations go. However, this one holds your attention throughout. So, sit in a comfortable chair, open a good bottle of wine, and enjoy this presentation.

  • @Ace0077
    @Ace0077 Před 5 lety +18

    when Brian announced 2nd guest I heard "Erwin Schrödinger", I was like whaaaaaaaaaaaa.... oh

  • @saismrti
    @saismrti Před 4 lety +3

    Fascinating indeed!!! One of the few worthwhile videos in CZcams that I enjoyed!!!!

  • @phantomthiefkid76
    @phantomthiefkid76 Před 7 lety +2

    I joined this year's WSFB, and with kind of hindsight when I watch this clip again, I see Brian Greene having appeared to be skeptical with the attempt to detecting gravitational waves. Interesting!

  • @adilsakenov1410
    @adilsakenov1410 Před 8 lety +11

    I want Brian to be my general physics professor in uni!

  • @underfilho
    @underfilho Před 4 lety +3

    where are the subtitles??? I need to watch this and I need the subtitless :(

  • @HanzOnGaming137
    @HanzOnGaming137 Před 8 lety +29

    Been so excited about this! And I'm actually privileged enough to study the physics of relativity at uni, this is so inspirational.

    • @khosKarm
      @khosKarm Před 4 lety

      did you make it yet

    • @thomasbramwell9592
      @thomasbramwell9592 Před 2 lety

      You say your "privileged" says so much about you.
      In my eyes you and the sciantists above are the South Pole explorers of our time.

    • @HanzOnGaming137
      @HanzOnGaming137 Před 2 lety

      @@thomasbramwell9592 I'm modest about my ability and take pride I had the opportunity to study physics. I'm not at all privileged in my upbringing if that's what you are implying. I am working class.
      Are you massively generalising 'scientists' or 'physicists' in your eyes? The scientists above are the scientific communicators of our time. They are bringing science to the public interest.

    • @HanzOnGaming137
      @HanzOnGaming137 Před 2 lety

      @@khosKarm Uni physics? Completed it mate

    • @khosKarm
      @khosKarm Před 2 lety

      @@HanzOnGaming137 That’s really nice!

  • @danifem
    @danifem Před 2 lety +1

    Brian Greene is not only very good at breaking down and explaining complex topics but at the same time very entertaining at it

  • @RodrigoHernandezMota
    @RodrigoHernandezMota Před 8 lety +5

    Thanks for the math and nice visualizations. It's really enjoyable to see all this videos. Feeding knowledge and curiosity, a productive replacement for my Netflix addiction.

  • @zainabalshammari
    @zainabalshammari Před 5 lety +6

    That's just amazing. I liked how Samir talks about the start of the universe was like a marble @35:00

  • @barbi520
    @barbi520 Před 8 lety +9

    Wonderful discussions. This group of scientists were particularly brilliant and stimulating.

  • @renedekker9806
    @renedekker9806 Před 5 lety

    Does anybody know where I can find more in-depth information about the theoretical temperature graph of the background radiation, which comes up at 37:33 ?

  • @bernieflanders8822
    @bernieflanders8822 Před 3 lety +3

    It gives me hope that Einstein and newton's legacy have not fizzled out but on the contrary, they are flourishing

  • @2061526
    @2061526 Před rokem +4

    i think i'm the only person here who likes these subjects too much without understanding anything at all.

  • @AngelosPapadopoulos314159

    Well, Lucky Gabriela, did not have to wait so long in the end for results from LIGO :-)

  • @concettooniro-artsandtales3673

    Extremely inspiring video and people, thank you.

  • @j.erickson8571
    @j.erickson8571 Před 7 lety +12

    Fantastic discussion. Brilliant minds all over.

  • @vincentmiller6773
    @vincentmiller6773 Před 5 lety +3

    I live only a few miles away from the Livingston La LIGO. It's a pretty dang interesting place if I say so myself. 😊

  • @erikziak1249
    @erikziak1249 Před 8 lety +10

    Brilliant. Especially the last 40 minutes were fascinating and give me something to chew on. Some crazy ideas already popping into my mind, better keep them for myself. :-)

    • @MrVaypour
      @MrVaypour Před 8 lety +6

      +Erik Žiak (tramstefanikova) NO! TELL ME!!!

    • @thecrazylovelyboy
      @thecrazylovelyboy Před 7 lety

      Erik Žiak Go to physicsforums.com or other appropriate medium and discuss your ideas. Don't keep them for yourself ;)

    • @erikziak1249
      @erikziak1249 Před 7 lety +1

      Was this one year ago? Time certainly lost its meaning. I forgot what I was thinking then. Nobody is interested in my garbage thoughts anyway.

    • @espaciohexadimencionalsern3668
      @espaciohexadimencionalsern3668 Před 4 lety

      coppy right them i all readdy did at three times actualy four

  • @alexcastro7339
    @alexcastro7339 Před 4 lety

    Brian Greene is one of the most eloquent speakers I've ever heard on the subject of astrophysics. And his wit is an added bonus.

  • @gpcrawford8353
    @gpcrawford8353 Před 5 lety +1

    Einstein gave a glowing account of the Italian mathematicians who added insights to Riemann’s differential geometry.

  • @glutinousmaximus
    @glutinousmaximus Před 8 lety +8

    It wasn't _precisely_ that light will be deflected by a gravitational field - since Newton's math already showed that would happen. Einstein's calculations though, showed that the effect would be _twice as great_ which was the important difference.

    • @steveallen1635
      @steveallen1635 Před 3 lety

      Physics is the same across the whole the universe, of course the universe is going to be homogeneous!

    • @steveallen1635
      @steveallen1635 Před 3 lety

      Dark energy should not be looked upon as a mystery, it is a fact, embrace it!

    • @steveallen1635
      @steveallen1635 Před 3 lety

      Black holes are very obvious, the maths shouldn't cloud the observation!

    • @steveallen1635
      @steveallen1635 Před 3 lety

      Black holes don't have a singularity!!! Come on this is just common sense!

    • @steveallen1635
      @steveallen1635 Před 3 lety

      Oh jesus, if you accept a gravitational field you must have gravitational waves, wtf is this women on!!!!!

  • @ericespinoza845
    @ericespinoza845 Před 7 lety +3

    Outstanding presentation!

  • @williamblake7386
    @williamblake7386 Před 4 lety

    timestamps is a big deal for any long educational video. much appreciated.

  • @philippugsley1045
    @philippugsley1045 Před rokem

    Brian makes these talks great with his interventions to clarify matters.

  • @elijaguy
    @elijaguy Před 6 lety +3

    59:20 "I think it s going to be in less than 5 years"... (took them 2 months! how beautiful...)

    • @samirrimas
      @samirrimas Před 6 lety +1

      yes im sure they must have jerked off to it on the spot and then came all over the computers and report papers ohh yeah

    • @sharvin2304
      @sharvin2304 Před 4 lety

      @@samirrimas what you upset about

  • @YAS-dn6xn
    @YAS-dn6xn Před 7 lety +7

    Thank you Samir. I was wondering why the entangled particles that fall into the black hole have negative energy.

  • @xenexphobia
    @xenexphobia Před 8 lety +2

    Wow incredible video and guests. Thanks you!

  • @oscarwhitney7360
    @oscarwhitney7360 Před 4 lety +1

    So this was 2015. Then a few months ago Weinberg’s wish of seeing a black hole was granted. Pretty mind-blowing.

  • @Yamasenshi
    @Yamasenshi Před 7 lety +3

    I actually do have the same formulation of the Einstein field equations that they show at 19:00 tattooed on my arm :)

  • @danileuenberger5620
    @danileuenberger5620 Před 7 lety +8

    next year she will come back! :)

  • @IronDogger
    @IronDogger Před 4 lety +2

    I enjoy going back to these previous lectures knowing how much has been proven and how they arrived at the results. These are timeless by providing so much theory and applied comprehension.

    • @holdendavid9025
      @holdendavid9025 Před 2 lety

      Lol. Applied comprehension? 🤣🤣🤣

    • @IronDogger
      @IronDogger Před 2 lety +1

      @@holdendavid9025 Don’t hurt yourself on my account 🤪😜

  • @goFUQyourselfPLZ
    @goFUQyourselfPLZ Před 8 lety

    Great set of panelists and the new "two track" approach is a great improvement

  • @das250250
    @das250250 Před 5 lety +12

    @43:00 the picture of black hole ... Several years later we have a real picture of a hole

  • @AmitKumaarrr
    @AmitKumaarrr Před 4 lety +5

    How beautiful is the current time w.r.t this video. We have detected gravitational waves, we have black hole image. Way to go Science!!

  • @hughcake1895
    @hughcake1895 Před 8 lety +2

    Great talk. I would really enjoy a discussion about the fundamentals in mathemathics, physics and philosophy -- the difficult problems at the point of the arrowhead: Inherent indeterminacy in axiomatic systems (leads to measurement problems in physics). Experimental data is pointing to an emergent reality. I would like to listen to new ideas about the metaphysical implications of quantum mechanics. I would even embrace very speculative ones, because strange -- coherently strange -- ideas should be considered at this point.
    Epistemology plays a very important role in how we define axiomatic systems conceptually (often underestimated). We need new ways of asking difficult questions, because the purely mathemathical picture of the universe seems to break down to the language of mathemathics itself as we probe deeper (This does not mean that reality is mathematics. It means that reality is idealistic, and we do not know how to deal with that -- because it implies that reality has some kind of purpose).
    I would like to listen to people who do not confuse the concept 'absence of anything' with the number zero. The concept 'absence of anything' is nonsensical when it is applied to physical systems -- and even in ordinary language. This confusion seems to be widespread. It leads to theoretical weirdness (Infinitely expanding 'nothing' described as 'something' etc.).
    I would also like to listen to creative ideas about how the observer fits into this picture. The C-word and quantum mechanics mentioned in the same sentence is not necessarily just semantics or quantum quackery. The act of mesurement: interaction between probabilistic fields, seems to have some fundamental significance (interaction presupposes an observer ... a point of determinacy). This means that reality is at least self-referential at the quantum level of reality (I am one of those 'crackpots' who still consider the possibility of teleological effects). I want to know what is going on there, because it seems to me that I am either crazy or that there is something everybody else knows that I just do not understand.

  • @SamUndJet
    @SamUndJet Před 2 lety +1

    I am definitely awed by science and would like to learn more. The presentations from the men’s festival are impressive. I look forward to presentations from the women’s science festival, which I assume is upcoming. For some reason, women’s explanations of complex topics are generally easier for me to grasp.

  • @MrBoodyx
    @MrBoodyx Před 6 lety +3

    Due to my stupidity i can not put into words the greatness of this video

  • @genes2311
    @genes2311 Před 6 lety +13

    and they detected the first gravitational wave 5 months after this ! Amazing ! Science Rules !

    • @Reksal
      @Reksal Před 4 lety +1

      And now, a photo of black hole is successfully taken too!

    • @fatoldpal
      @fatoldpal Před 4 lety

      was looking for this comment

    • @ryanmoore2047
      @ryanmoore2047 Před 4 lety

      Science, alone, doesnt actually do much. Highly intelligent people 'rule', as you say.
      Those bestowed with a rare level of intelligence created science.

    • @michaelstone7546
      @michaelstone7546 Před 3 lety

      Anyone may make theoretical knowledge. Most persons may discover practical evidence, measurements, methods, repeatable experiments, analyses, models, etc.

  • @kusumkantasaxena5440
    @kusumkantasaxena5440 Před 2 lety

    Very informative and was gratifying to hear such luminaries on the complex topics.Thsnks to the organisation.The last comments left me puzzled yet.

  • @THEPROUDSON
    @THEPROUDSON Před 6 lety +1

    Ok it's official I'm a geek, loved it, loved the explanations and the graphics presentation.

    • @espaciohexadimencionalsern3668
      @espaciohexadimencionalsern3668 Před 4 lety

      IM mexican i dont believe most of all - how good can make it the standard moddle with out gravity and all the fortress are based on and there a lot that beleave without seen

  • @eyebee-sea4444
    @eyebee-sea4444 Před 4 lety +25

    Einsteins mistake was him thinking that he had made a mistake - Steven Weinberg

    • @Mick0722MX
      @Mick0722MX Před 4 lety +1

      Steven Weinberg is a moron. Einstein was a quack. The whole notion of space-time is utter bullshit. Space has no physical properties, and time is just measured motion.

    • @jamesdolan4042
      @jamesdolan4042 Před 4 lety +1

      @@Mick0722MX You have a point, BUT do you have an alternative theory how the universe works at a macro level. Could you include equations that predict the movement of the Earth's motion around sun?

    • @Mick0722MX
      @Mick0722MX Před 4 lety +1

      @@jamesdolan4042 Open any credible Physics book, and it will tell you pretty much anything you want to know.

    • @hattron6704
      @hattron6704 Před 4 lety +2

      @@Mick0722MX you are a vegetable.

    • @Mick0722MX
      @Mick0722MX Před 4 lety +1

      @@hattron6704 You're an idiot.

  • @thesciencethatilove8959
    @thesciencethatilove8959 Před 6 lety +3

    Always pleasure hearing brian greene.....

  • @seanmortazyt
    @seanmortazyt Před 5 lety +1

    It’s so wonderful that since this video was published two of the topics alluded to have been addressed successfully: we have confirmed observations of gravitational waves and we have the first image of a black hole!

    • @espaciohexadimencionalsern3668
      @espaciohexadimencionalsern3668 Před 4 lety

      a black hole with only one charge will never make it, not all that shiness is gold not every thing rounded and dark is a block hole - all sistems have holes wene crossing the bridges of each color from center to right and left - all sistems have a center, a north side and south side.

    • @espaciohexadimencionalsern3668
      @espaciohexadimencionalsern3668 Před 4 lety

      in the joint of two black holes in math wene they encounter they should create a disc that i never hear of.

  • @alshort365
    @alshort365 Před rokem

    It hit me when he was in an undergrad in college and bought Einsteins book and within “ a couple years he understood it.” I’m in my 40s and just now acquiring this knowledge. I’ve fretted away my youth….

  • @petervisser5634
    @petervisser5634 Před 5 lety +3

    Consider the Big Bang as not being the origin of our Universe but the continuation of space time from another universe where Black holes with so much density actually rip through the fabric of space. There might be as many universes as there are galaxies in our own backyard. Philosophical and science fiction stuff in itself but hey no one knows what happens inside a black hole and did Hawkins not discover that black holes eventually evaporate.

  • @Mattgini1
    @Mattgini1 Před 4 lety +3

    Brian Green is an brilliant physicist AND a amazing pedagogue...this rare breed of scientists, deserves a Nobel price in my book.

  • @imnotpriscilla
    @imnotpriscilla Před 7 lety +1

    Its crazy to think that LIGO has recorded the presence of these gravitational waves (created by the collision of two merging black holes) for the first time

  • @bsdslacker
    @bsdslacker Před 2 lety +1

    I am still amazed on how many predictions General Relativity is still making.

  • @morsecodereviews1553
    @morsecodereviews1553 Před 5 lety +4

    Dang I messed up. I walked through Harvard Yards every morning on the way to high school. Where am I now? Pfft working minimum wage stocking shelves.

    • @elck3
      @elck3 Před 4 lety

      Morse Code Reviews, I feel you. But there ALWAYS is time to drop everything you’re doing and pursue your dreams

    • @elck3
      @elck3 Před 4 lety

      I also walked thru Harvard Yard - very inspiring and some of the best times of my life

  • @fvckinfool101
    @fvckinfool101 Před 5 lety +19

    Its crazy how many models and theories come from Einstein's theory and equations. Sheesh talk about a legacy.

    • @theultimatereductionist7592
      @theultimatereductionist7592 Před 5 lety +1

      I know, right?

    • @justaguy6100
      @justaguy6100 Před 4 lety

      @A Person Wrong about what, exactly? There's a number of theories he proposed, most about gravity of course. And he WAS wrong about some minutiae, actually. Quantum entanglement was one he was proved, finally, to be wrong about, and Neils Bohr proven to have it right.

    • @yanair2091
      @yanair2091 Před 4 lety

      @@justaguy6100 Actually Einstein discovered entanglement, so ,was he really wrong about it?

    • @justaguy6100
      @justaguy6100 Před 4 lety

      @@yanair2091 Oh he ABSOLUTELY theorized it's existence and all due credit goes to Einstein, it's more about the nature of whether that information implied by entanglement was fixed from the beginning (Einstein's position) or transferred at the moment of observation (Bohr's position). Bohr's proposition was ultimately proved to be the case. There's no slam of Einstein here this is pretty far in the weeds of quantum theory. It was, as he said, a "spooky" notion that regardless of distance, and instantaneously, entangled particles transmit this "information" to one another. He just didn't accept that was the case, as a matter of practicality and the limits of lightspeed, BUT it turns out it does happen, as spooky as it is.

    • @michaelnguyen8121
      @michaelnguyen8121 Před 3 lety

      @@justaguy6100 Quantum Mechanics still til this day haven't explained quantum entanglement which Einstein discovered so in that sense QM might be wrong. The John Bell's experiment are only 85% accurate in favour of QM but Einstein is right when he said that QM is incomplete.

  • @zeyism3981
    @zeyism3981 Před 5 lety +1

    This made my whole damn week !!! Thank you.

  • @antoniolau8762
    @antoniolau8762 Před 3 lety +1

    Absolutely brilliant discussion

  • @Seapatico
    @Seapatico Před 7 lety +220

    This comment board is full of people with no education in any relevant field critiquing the smartest people working on the most difficult problems in physics. If you're about to comment something negative, think just a few seconds longer about whether you have anything actually relevant to say.

    • @KebunH
      @KebunH Před 7 lety +3

      Sean Cook such is the arrogance of people nowadays

    • @comicsans3845
      @comicsans3845 Před 7 lety +2

      Sean Cook Butthurt?

    • @spinningspin6053
      @spinningspin6053 Před 7 lety +2

      Keep stifling People's intrest in science nerd

    • @peterkay7458
      @peterkay7458 Před 7 lety

      Daniel very clever i fast forwarded just to see what you were talking about thanks

    • @YAS-dn6xn
      @YAS-dn6xn Před 7 lety +3

      LOL. dude, that's harsh

  • @abidmalik134
    @abidmalik134 Před 7 lety +3

    Mr greene ur way of explaing is so nice ..love from pakistan

  • @steliosp1770
    @steliosp1770 Před 4 lety

    Dr Weinberg is a pleasure to watch and listen to.

  • @MaXxProsTe
    @MaXxProsTe Před 5 lety

    That part about grav.waves is kinda funny (retrospectively), because we know that first detection in ligo happened barely two month later after publication :-D

  • @monktrane325
    @monktrane325 Před 8 lety +15

    My question is did math create the universe or did the universe create the math.

    • @manasaveenapadma2236
      @manasaveenapadma2236 Před 8 lety +4

      +Larry Gilliam i think mathematics is the lens that we use to see and understand this world/universe.. and we can not only see but use our other senses.. like wise there might be other ways.. so definitely universe(precisely we) create math..

    • @GuileQwerty
      @GuileQwerty Před 8 lety +4

      +Larry Gilliam Neither. The concept of 'creation' only applies really to conscious agency.
      Math is a language which is designed to express amounts and patterns in purely logical terms. The numbers we use, or "letters", are certainly created symbols, but the true statements which can be expressed with math are discovered and extrapolated from the observed universe. Just like in verbal language, statements of fact can be true or not true; and when they are true, they can be used as premises for predicting as-yet unknown conclusions. For example, time is an observed aspect of the universe, and we human create the set of intervals for clocks to measure.

    • @monktrane325
      @monktrane325 Před 8 lety +1

      +Manasa Veena Thank you..I have always had an issue with human's presuming that the universe is based on math. Perhaps it is a lens; however the lens is made by humans. Yes, I agree with the properties of quantum because I remember as a boy, I questioned everything including: that the answers are simply on this earth. So, smaller, smaller and smaller is .....maybe the answer. There is a thought I had but I will keep it to myself......

    • @monktrane325
      @monktrane325 Před 8 lety +1

      +Cee Jay My goodness-I have always argued that consciousness is the answer. As in death, if I am conscious then there is existence after death. If I am not conscious after death then there is nothing. Existential....Regarding time and space, it can argued with math but; as Einstein even came to a wall. Gravity to me is the answer to many things. A warped dimension is not the total answer.

    • @GuileQwerty
      @GuileQwerty Před 8 lety +1

      +Larry Gilliam Do you remember being conscious before you were born?
      If 'yes', how would you propose to demonstrate that claim?
      If 'no', why then would you assert that your consciousness will survive death?
      Some scientists and philosophers propose that human consciousnesses (minds) can be transferred onto sufficiently powerful computers. This concept dodges the question of postmortem existence by replacing the expired human body with a new synthetic brain for the mind to be in.
      If we're talking about minds surviving the death of the brain (body) on their own, without being transferred directly into a new brain, well then we're talking about ghosts and reincarnation and there is just no evidence in support. In fact, not only is there no evidence in support of ghosts and rebirth, but all the evidence is against it.
      As for Einstein and gravity and warped dimensions, I don't understand what you're getting at.

  • @AdnanKhan-oq6xh
    @AdnanKhan-oq6xh Před 8 lety +13

    Gabriela knew that Gravitational waves have been detected at that time but she kept it a secret.

  • @justinalvarado7351
    @justinalvarado7351 Před 7 lety

    For some reason when I read the Foundation Series Dr. Greene was my mental actor for Hari Seldon's character.

  • @albcwc
    @albcwc Před 6 lety

    fascinating to see this knowing that shortly after this, they did detect a gravitational wave at LIGO, and it was so much better, louder and less noisy than anything they could have hoped for. Must be extremely satisfying.

  • @russelingersoll6902
    @russelingersoll6902 Před 6 lety +39

    these people on the stage are the ones who trying to make sense of our known universe instead of the other bunch who believed the they already figure it out all by reading a book written by primitive men...

    • @joemiller1461
      @joemiller1461 Před 4 lety +1

      well if a book that tells the future proven by the past contradicts a panel of theorists trying to explain a fantasy with science well ill stick with the book that tells the future ,,,,, so

    • @Feisty123
      @Feisty123 Před 4 lety +4

      @@joemiller1461 fantasy? R u dumb?

    • @johnny4aces410
      @johnny4aces410 Před 4 lety

      @@Feisty123
      Mr. Joe Miller is the quintessential arrogant idiot.
      Low IQ types like him will always criticize what they can't understand.
      He's a throwback to the bronze age like the book he refers to.

    • @johnny4aces410
      @johnny4aces410 Před 4 lety

      @@joemiller1461
      You are the epitome of a Crank.

    • @joemiller1461
      @joemiller1461 Před 4 lety +1

      @@johnny4aces410 1:25:40 watch from this point a few minutes , now does it sound like he knows? and your useless attempt at insults" cmon you can do better

  • @kyaume21
    @kyaume21 Před 8 lety +24

    I find this a very unbalanced (interesting nevertheless) debate. The panel comprises exclusively what are essentially quantum field theorists (string theory being essentially a field theory) who seem to be saying: in fact Einstein was wrong on the principles and Newton (an absolutist in space-time) was right. This is because both string theory as well QFT require a non-Einsteinian absolute background space-time. Thus, I find this a rather strange celebration of Einstein's ideas, by collecting a group of physicists who, deep down (as Weinberg admits) are in disagreement with Einstein deeper ideas. To balance this debate, it would have been far more interesting to have taken some people from the loop quantum gravity community (Rovelli and others) along, who would represent a way to marry the deeper ideas of Einstein with quantum heory without having to sactifice the essential tenets of Einstein's theory. Of course, with Brian Greene in charge this would never has happened. Thus, we get this strange book-kissing thing with all the panel effectively giving a kiss of death to Einstein's fundamental ideas. Very strange.

    • @Bizza12345
      @Bizza12345 Před 8 lety

      +Heisenberg-SchrodingerEmc2 You guys are nerds aye but true.

    • @glutinousmaximus
      @glutinousmaximus Před 8 lety +1

      +Heisenberg-SchrodingerEmc2
      The "classical mechanics being non-probabilistic" bit is fairly obvious; _except_ that it's not entirely correct. That's why QM is more accurate (and (very accurate in QED) The example of the box with a vacuum is sometimes given as an example. If you introduce a gas in one side of the box, it will spread rapidly throughout the box such that the distribution of atoms is fairly even. That's the _greatest_ probability. but there is a vanishingly small chance that at some point in time, the atoms will only occupy one half of the box. (in the next instant, the situation will be different) But I suppose that's the sort of thing which would rather difficult to show empirically. Regards.

    • @kigozimuhammad
      @kigozimuhammad Před 6 lety

      kyaume21 Brian green can never get the hang of it . He still stuck and steeped in this delusion of strong string theory . He has suffered from this for years

    • @TheWraithkrown
      @TheWraithkrown Před 6 lety +1

      As a lay person I like "string theory", however, there are some big problems with string theory that a string theorist would admit if pressed. For example, there is no way, experimentally, to prove string theory. I am skipping ahead a bit, only 1hr14min in, but i don't think any of these people are going to throw out general relativity just yet. String theory CAN NOT be proven experimentally. As they admitted in the beginning, general relativity has been proven experimentally on several occasions. At some point general relativity may be replaced, but it will not be by string theory.

    • @Deeplycloseted435
      @Deeplycloseted435 Před 6 lety +3

      TheWraithkrown I too a lay person / physics enthusiast, would say your comment is correct, but you left out one big word.....YET. String theory can not be experimentally demonstrated YET. I mean, hey......it took a century to devise an experiment to measure gravity waves. When did string theory emerge? Sometime in the 1970's? Perhaps in our lifetime, something will give? I don't know, short of creating and gathering data on a singularity in a laboratory. CERN is big, but I think they realize that they need something even bigger. Sometimes I wonder if it just all comes down to one person, like an Einstein or a Newton type-person who has the ability to divorce their thought and imagination from the current models that exist, to help us go down another path, and reach new conclusions.

  • @usmanibrahim367
    @usmanibrahim367 Před 5 lety +2

    I like the back up from Weinberg

  • @johnsheehan5109
    @johnsheehan5109 Před 8 lety +1

    Thank you for a challenging stunning video. What an extraordinary universe we live in ...