Accelerate, Collide, Detect: Gravitational Waves & Particle Physics with Brian Greene & Barry Barish
Vložit
- čas přidán 29. 05. 2024
- Nobel Laureate Barry Barish and Brian Greene discuss the quickly-evolving world of gravitational waves detections-from the first detection on September 14, 2015 to its public announcement five months later through the many detections since. Join them for a conversation about the shuttered Superconducting Super Collider, the origins of LIGO, and hopes for future detectors.
Brian Greene kicks off the session with audience Q+A. Barry Barish joins at 32:00
This program is part of the Big Ideas series, supported by the John Templeton Foundation.
Live Sessions are conversations hosted by Brian Greene with world-renowned scientists, including World Science U faculty exploring matter, mind, and the cosmos.
Official Site: www.worldsciencefestival.com/
Twitter: / worldscifest
Facebook: / worldscience. .
Instagram: / worldscifest
#science #WorldScienceFestival - Věda a technologie
Curiosity is why I love these learning experiences, thank you! 73 years young
PS: I guess I need to read Moby Dick 😊
You got that right
I only found this series recently. It would have been a nice distraction during lockdowns.
Professor Greene. You don’t need to apologize for anything. I love seeing you “in the moment.”man I wish I were 50 years younger 😎. I didn’t take school seriously ENOUGH. I have a tremendous respect for you and the amazing science of the Universe we inhabit thank you buddy!!
Nice thinking good❤
@TZADDIKIM 1 ** hey, what's with amigo?
But hadn't he apologized he whold not be professor Greene. With great calculations comes greater humility
I am so grateful for Brian Greene’s sessions, I listen to him everyday, it is a blessing for me in this tough time, stuck at home.
.
Well Brian, one thing I do miss about cloistering myself at grad school is a distinct lack of self-aggrandizing anti-establishment bandwagoning. Those people tend not to be grad students for long, becoming candidates for academia's Darwin Awards.
I'm thankful you're spending so much time with us during the "2020 Challenge," and I appreciate that you've always presented everything, including string theory, with total objectivity and transparency. You and those like you are exactly the examples up-and-coming scientists need.
Barry wow, in search of pure science for the purpose of Satisfying curiosity. Pure and wonderful. Thank you Brian,
Kim
I think it's great that we dont focus on the pandemic on this channel because even in my nursing course we focus on the pandemic alot. It's a great place to fill my mind with other information.
Professor Greene, thank you for being so generous with your time and knowledge these past seven months. It is truly appreciated. Your talks are amazingly informative. I hope you continue with this series of talks.
Respite indeed. We're so grateful for this opportunity to do something useful and productive with our minds.
Professor Greene, you are a physics rockstar!! Thank you for sharing your knowledge and attitude with us!
Another intellectual respite from the pandemic and politics of the day. Thank you Professor Green. I'm stuck in downtown Miami (actually its paradise as I ride my bike, with a mask, across the Venetian Causeway most days for my moment of Zen) :)
Thank you for the great videos, just wanted you to know how much I appreciate hearing you talk about the beautiful amazing cosmos.
It’s November 18 and the entire country is in another CV-19 wave. Professor Greene: America desperately needs another edition of your live stream Q&A sessions with the incredible guests you have featured. I watch each live stream several times because there is so much interesting content. When is the next live stream? Please!
I want to become a theoretical physicist and thank you for the advice professor Greene over the past videos. I find that the theoretical minimum series if a great way to study calculus and classical mechanics.
Wonderful ! Thankyou Brian and Barry!
I appreciate you not wasting the time on the topic of the pandemic. I do not seek answers on the pandemic from partical physicists. For that, I'll turn to working biologists, virologists, immunological, neurologists, and medical doctors. So my respect to you for knowing when to stay in your lane. I appreciate that very much. Thank you also for sparing us discussions on gender issues as well.
This is one of my favorite clips. Thank you Brian Greene and Barry Barish. Couple of decades ago I built a 2 meter ring on an optical granite table in the basement of my university lab for my thesis. I was able to measure extremely small vibrations. Later, a larger ring was expected to be built in a cave in New Zealand. It is so amazing to see what we have been able to do with LIGO! Now the next step is with the space antenna array LISA. Also potentially using pulsars to measure across extremely long distances!
Bobby Barash I love hearing your explanations.
Watched the Special and General Relativity lectures and it really enlightened me and inspired me to try to understand the math on a deeper level. Thank you Professor Greene
I am not a physicist.and algebra was hard for me I have enjoyed watching the world science festival for years. Thank you.
Thank you. I appreciate these videos so much!
Not interested. No more. Whats my command? No compromize
Great to see how you demonstrate the importance of the historical context in which new ideas are introduced. It shows how difficult it can be for new ideas to be considered a possibility when the idea contradicts the paradigm of the time.
Just an absolutely amazing dialogue !!!!
Brian is great. He doesn’t make me feel so unintelligent
Thanks Brian. We really enjoyed that
Thanks for all.
Latecomer to the comments, but: I don't even pretend to understand some of the things you so easily explain. But I trust, and am grateful, that there are those of you out there that actually "understand" (and I put that in quotes, not not say that you don't really understand, but to say that we us mere mortal call "understand" can't even fathom the depth of a person's, like in your case, knowledge). So... without further ado... just let us know what we all gotta do!
I enjoyed your and Barry discussion very much, thank you.....Perhaps, Alan Guth would be available for a another one some day.....
Fantastic stuff - thank you!
This guy is a living legend.
Anyways we love you, and starving to learn more.
this discovery is beautiful , congratulations to everyone involved collaboration near and far leads to interns... excellent work. Stay safe Stay dangerous!
I want to know why 12 people disliked this video! That, to me, represents a complete lack of interest in learning something. Most people listen to music while gaming (maybe those 12 dislikes?). I listen to documentaries on nearly every thing while gaming. Brian rates top ten in my choices of what to listen to. :)
great to have you, I really enjoy reading your books , very approachable, better than the fairy tale
If black holes are infinitely small, then that's smaller than the planck scale unit. That blows my mind knowing that you can have minus zero. I thought it was either one or zero, like a computer game. Great videos, they keep me sane in these crazy times.
Thank yoù Professor Greene. I love your explanations for so many aspects of a subject that is otherwise considered to be quite beyond the lay person. My question is is the universe self correcting? If not then is the second law of thermodynamics our inescapable and ultimate end result. Nafisa from Pakistan
On the short term self correcting yes. Read about stellar evolution and stellar nurseries. In the loooong term, it appears entropy wins correct. But there are a lot of unknowns at present that would affect the long term prediction. Mainly dark matter and dark energy need to be accounted for or shown to not exist as a start to answer the question
Brian I need you on the Dream Team.
Dead serious. Are you ready to live up to your potential?
Prof Greene
Thank you so much
If spacetime is quantized to discrete units in the size of Planck length and Planck time than how do we define the spacetime between these discrete units? There has to be something between them.
Can it be an extra non local grid like dimension which connects the units together and enables the quantum entanglement behavior?
THANKS 🙏
Fabulous.
A little above my intelligence pay grade being not much a physicist but still enjoyable to watch the quest for knowledge,
A couple of things that have always puzzled me.
1. At the big bang all the matter and energy was concentrated at a single point. Would this be a black hole? If so, then how could it expand? And what would be the implications for time and space during the big bang?
2. If the universe has no center and no edge, then what shape can it be?
The answers you need are in the inflation models
1:24:29 could very well be exactly between the two: a black hole/neutron star merger, or as I'd like to think of it, a Neutron Star splashdown
👍 Prof. Greene, the get-to-know-our-guest chapters prior to most every vid. are always fascinating and entertaining. Please continue with them.
I too had no interest in Moby Dick 😉; was always more interested in my father's Nat. Geo. subscriptions, Popular Mechanics, Boy's Life and daily (newspaper) stats & numbers of various sports teams. Good stuff.
What is String Theory's answer to Quantum Wavefunction Collapse
Professor Brian could you change the timings of the live sessions bcz we people in India are unable to catch it live
Yes Professor Brian, plz change the time
Missed the live session ... It was night here
Where can i ask questions if i can't find answers anywhere on the internet?
Your introduction of fact over fiction/dogma was refreshing and left no shadow to be grazed in for the republicans of our time
If time slows down inside the black hole, does anything, from an outside observer's frame of reference, actually fall into the black hole? If so, how does it's mass grow?
Time when these start, pacific time please... and what days?
I haven't listened to the conversation since the beginning but I'm sure we'd need such instruments as lago at a much lower cost send in space as far away from any impact as possible where perhaps the only problem is solar wind
The probability wave is not just an abstract idea. Something(s) actually hit the screen at the back of the double slit experiment and leave their mark.
I actually think it's always a partical it's just easy to calculate it using the wave formula, why, I dont know , maybe it has something to do with earth being a water world that has a big atmosphere. Just my two cents on the matter. P.s. would love if they did the double slit in space to see it they derive the same results.
Feynman bullets.... they are particles but the probability has to do with how the particles “behave” as if they have choices. Unlike real bullets you spray out of a gun, electrons or whatever particle (they all do this) collectively exhibit wave LIKE patterns of interference. But you can’t force them to not do this which is weird... but they are not waves themselves one by one
It makes me smile when i hear people talk about ... TIME TRAVEL ... When pilot's began travelling at Mach speed ..... they noticed that their watches were no long in sink ... So why ? science says the faster we move the slower time moves .... this amuses me no end ... Watches back in the day we not digital they were Mechanical ... the G Forces on a mechanical watch WILL SLOW THE WATCH DOWN ... Not Time Its Self ... the notion that ... TIME SLOWS DOWN THE CLOSER WE GET TO THE SPEED OF LIGHT .no no no ... TIME is a construct of MAN a minute is a minuit because we say it is .... If i travel NORTH for ONE HOUR at the speed of light and then travel back at the speed of light to my launch site 2 Hours have past ...NO MORE NO LESS ..... HOWEVER if i have a Mechanical watch on my rist it will indicate that time has slowed down because of the G FORCES on the cogs and gears it is an illusion TIME DID NOT SLOW DOWN THE WATCH DID ..... What we know as time is a man made concept not a Universal concept .... travelling to the past or to the future is not time travel TIME must be removed from the formular as it is man made ... The formular needs some thing else for the formular to work ..... TIME IS ON OUR SIDE NOT THE UNIVERSE'S because WE MADE TIME WHAT IT IS NOT THE UNIVERSE
In the same way that space elevator doesnt have to move at 11km/s to escape Earths gravity, if I was dangled below the event horizon on a ladder could I not climb out?
What do you think of Murphy’s Law and do you think it has any scientific application?
I delayed my start of a STEM PhD course after completing my Masters degree both to rest and save the money required to pay for it then Covid-19 came this year. I guess I may never end up as a guest for WSF.
I know we believe black holes have an upper limit they can be created at, but does that mean there is an upper limit they can grow to? for instance a regular black hole vs a supermassive black hole, why couldn't say 2 supermassive's collide as galaxies combine, creating an ultra supermassive black hole, which could potentially collide with another to make these strangely huge gravitational waves?
Nice.
Science is not absolute it must change by appearance of new evidence. This is true for philosophy and true religion, they too need to change by time.
Will A.I. develop quantum computing before humans or will it be a dual development?
I don't feel so bad now. Even the smartest among us forget the power cord every now & then!
I enjoy this kind of stuff. I think you should have sabine hossenfelder on. She is a physicist and seems to have a different point of view from others. Could be some fireworks ... ;)
Don't know why but I thought Mr Greene was gonna say something about me and my question with regards to math at the beginning.
The question being this, the problem with a multiverse is that it's infinite and therefore everything that can happen will happen so it can't predict anything. My question is why do we treat math any differently, its infinite also. Why be suprised when you find something? It's all there because in infinity everything you can think of and everything you can't think of has to happen in that math just as it does in a multiverse.
Watch feynman lectures on math and physics. Physicist does not want or need all the abstract math available... she is only concerned in the SPECIAL case where specific math is needed. However, she often goes BACK to the abstract math as new problems arise along the way. Also see godel incompleteness
I have a question. It’s bothering me and it is probably so simple.
When I fly from East to West it’s so much faster than when flying from West to East. I realize the wind currents, but aren’t we chasing the rotation of the planet as well. Why is my brain having such a hard time with this?
No, sun rises east, so flying west is against rotation not with it.
@@RicardoMarlowFlamenco terrible miscommunication on my part. I meant when flying west to east. Towards the sunrise. With the rotation. I understand it’s because of wind currents now. Still hard to fathom given the rotation of the earth is approx. 1000 mph.
@@inbox58 Hope you're not serious?
brian is a god among men
God doesn't take a shit
It's obvious that they don't seem to know the whole phase. It's Curiosity killed the cat, but satisfaction brought it right back. Since people have dropped half the saying, instead of the intended meaning of the phase to say Curiosity is a good thing, it now implies curiosity is a bad thing. Somehow the 2nd line got dropped many, many decades ago.
Did some lab mistake a cooking microwave for a signal?
There is something rather than nothing because in the beginning there was eternal unlimited supernatural nothing that got pushed too far and it reversed itself.If you push anything too far it reverses itself.
@9:55 The old landline phone rings... (G%
2:02:00, Soo...42?
bring ALAN GUTH also
Are these two theories invalidated already about the black hole:
1. The space dimensions curl inversely inside a blackhole. And some of the equations of the form f(r) changes to f(1/r) preventing infinities in nature.
2. Ultra high density of energy inside a black hole leads to unraveling of spatial dimension in other dimesnsons of string theory and big bang was the reverse process of the same phenomenon
Hello Prof Greene
Assuming spacetime is quantized to units in the size of Plancks length and Plancks time, can we assume that between these local quantized units there is a grid like non local dimension which enables the non local quantum entanglement behavior ( "spooky action at a distance") and ER= EPR ?
34:20, Lolol..Sorry...But;
Are we really talking to a Barry Barish about a Harry Barish?
not much on energy dispersion or gravitons
Is it possible that that this is what nothing looks like?
Mr Green, i am sending you portable charger.
And..... Why??
@@localtitans4166 Because professor Greene had technical problem with his laptop, last night (his laptop didn't have enough charge).
If you set your white balance to manual it wont flicker in the back ground
n my mothers belly, unborn yet, i heard Bach, Chopin and boogy woogy's my dad plays.
I am music, A Loren Emmerich production that's who i am.
If photons don't have mass, why are they gravitionally affected?
They aren’t .... they are not pulled because Einstein showed us gravity doesn’t pull anything. It (mass presence) BENDS space and with space, time also is warped. Because photons move always at speed c, they don’t experience time, but they have to follow a straight path through space. So they simply trace the path of curve space around the event horizon or straight into it. That is why you see the Circle light distortion around M87 picture... those are are all the happy photons that didn’t get sucked in, rather danced around the very edge and made it back to photo plates here on earth and thus reveal the secret shape of space all around the thing. The unlucky ones that “can’t get out” were never trying to... they just go straight and hit the dead end... if you were inside the Event horizon w flashlight... every “direction” you turn to shine it is toward the singularity.
i think wat we open in the tunnel is wat a black hole closed
With all the recent work done with black holes, I'm starting to feel bored hearing the same info over and over about them. Not that they aren't fascinating, or that we should try to understand them better, but I feel like we need to make more headway in other areas to really understand the nature of a black hole. fields like the hypothesized gravitons. what are the "particles" that make up empty space that allow gravitational waves to exist? this is what I look forward to hearing.
Yeah,and they only exist when we look at them.
Brian for an hour and about 1h 40 minutes you talk about the expansion of the universe through time. Although your course of thinking is natural but also it is wrong in way of thinking. That it is quite normal but for people who think like you including myself we recognize that moment in the process of creating a complete thought (similar to the dark lines in Spectrum Analysis there are dark lines in thinking! Yes. they should be given attention and given time to understand if the procedure needs to be repeated as many times as necessary. In this case in this question the wrong analogy is in the question itself and then consequently in the answer.1 the universe does not arise in time because space time expands simultaneously And they represent these whole realities ( it's hard to accept I know by myself I'm Trekki and the ultimate consequence of my thinking is warp drive as in Star trek way is not possible (why= would be very dangerous because that the soup would sour very quickly)
2. Some other time 😄 1. Answer (what is the time in our reality =it is kinde of dimensions that allow us to move in a three-dimensional space in this way Give us the feeling of a four dimensional system and allows our consciousness as such)
Re: Black hole deniers. I would be tempted to say, "Really? We have a mugshot now, what more could you possibly want?" Except there are flat-earthers and not all the photographs of astronauts doing astronaut-y things on the moon, while the earth hung up above, served to put them off, so...
I believe most of will always respect someone speaking passionately about what they believe in. Just as you say, we can not just rubbish something and say it's true, just because someone says its true. A bit like Mr Trump does. We need to listen to the whys?
Child running from bear 26:07
Don’t fret about the cat Barry. Constitution brought it back.
Mr. Brian Greene, Can we meet in real life ?
if the argument is that everything is made up of fields and quantum fluctuations in those fields then isn't it also true for the blackhole itself? blackhole itself is made up of fields and quantum fluctuations in those fields; why would an entangled particle lose its connection near or inside the blackhole?
Also, question about the speed of light; is it the speed of light that we humans can measure (with our eyes?); what if there is something out there that our eyes are not capable of seeing (i.e. doesn't emit light); but exists how does one probe that? Dogs apparently hear better than we as humans do (dog whistle for example); what if dogs (or any other animal that sees things) ruled the world would they be able to see something that we humans cant? What about birds that use magnetic poles on the planet for migration during winter? I mean they dont even have the freakin electronic gadgets or mathematical equations....
Black hole presents problems involving thermodynamics. Read Hawking radiation theory. Collapsing wave function is super easy for entangled particles ... the opposite (keeping those babies from interacting with anything) is the more challenging thing. So with stuff going on at the event horizon edge (particles and anti particles collide or not) too many reasons why entangled particles get screwed.
About light... the rainbow thing we see is about different wave lengths red big purple small... so our pupils don’t allow infrared nor ultraviolet to be perceived ... other creatures have different size shape cones etc in the eye hardware and perceive different “rainbows” at different wavelengths. Knowing this we have made devices that can also “see” all wavelengths from big radio waves to tiny x rays and gamma rays etc the speed of them ALL is exactly the same
Clearly you missed the fact obvious suggestion that we are inside a blackhole. Everything we know so far is roughly of this Universe is only 5%, 68% Dark energy, 27% Dark matter.
Richard Feynmen: "If it can't be confirmed via experiment, it's wrong" I would like to think Feynman would have added: "If it has no possibility to be confirmed because no experiment is thought to exist, it's pointless (pride)" - Of course black holes exist, it's nonsense to say they don't. One would think that LIGO should sing like a choir given the moon's gravitational pull on earth's oceans?
Brian Green gets it totally and regardeless
1:58:30 WHAT???
You just lost a fan.
My question is after all these years why hasn't anyone sent a probe into the milky way or a satellite 😒
We are in it
26,000 light years away
Voyager 1 and 2 are exactly that... just now reaching the edge called “interstellar space”. They are no longer part of our solar system but rather “out” in the Milky Way.
Lol
*Scientific debacle?*
The methods use in this LIGO experiment is highly dubious, because the signal is actually selected out of a sea of quantum noise by using a template, in reality, the method is known as data mining! The so-called signal does not occurs naturally out of the environment but it's picked (selected) by the (programmer) observer which opens up the issue of confirmation bias in these experiments. These issue have been bought out by other professionals but it has been ignored!
*The truth be told about M87.*
The event horizon telescope image (M87) is not photograph, but in reality it's a *computer generated image* using data collected by multiple radio telescopes.
Here's another example where scientific bias could play into the interpretation of what this images means.
*A viable possibility, but never considered for the image M87.*
And here's another possibility; M87 could also be *Ring galaxy, also known as Hoag's Object!*
*Self-imposed deception*
A classic case of scientific Pareidolia; which is the psychological phenomenon that causes scientist to see objects which do not exist.
Cute little beaver teeth in the front there.....
Brian's hair looks like a gravity wave black hole merger....he must have had a dark energy rave the night before...he's usually more presentable, this has distracted me a little...black holes don't have hair....
The heads in the thumbnail, lol. I didn't realise Brian was so good looking.
Smug science denier: "Black holes are a hoax!"
Obi-Wan: "I sense a great disturbance in the force. As if 8 billion faces got palmed all at once..."