Lisa Randall on Dark Matter and the Dinosaurs | JCCSF
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- čas přidán 28. 08. 2024
- Harvard professor Lisa Randall (Warped Passages, Knocking on Heaven’s Door) is among our most influential theoretical physicists. Her new book, Dark Matter and the Dinosaurs, explores the consequences of the comet responsible for the dinosaurs’ extinction, speculates about other possible missing elements and illustrates the importance of preserving the elements on Earth that are vital to our existence.
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#LisaRandall #Harvard #Physicist
I agree with others, could listen to her for hours. Excellent long presentation giver.
dr. Randall ... watching your lectures enrich my journey i am deeply appreciative of your ability to make complex concepts understandable or at least as understanding as possible for us mere mortals! my journey of rehabilitation from a stroke will improve my mobility enough to attend one of your presentations in person! maybe a book signing? i hope you're still speaking at events open to us mere mortals!
Dark is the way of Science to say: "I don't know''. So having "Dark" matter or "Dark" energy has nothing to do with dark/bad forces but, it is only a way to say "I (still) don't know kind of matter". Great class!
No. It means it doesn't interact with light. When it's just something they don't know, they call it a conjecture, hypothesis, speculation, etc..
@Goseth Jones You mean, in your imagination?
@Goseth Jones They didn't detected any particle, but if you look at the evidence and you have enough knowledge of physics to understand it, you would have good reasons to believe it exists. It explain a lot of empirical observations in accordance with what we already know about physical laws.
But you "black dark matter" that has no gravity, does it interact with the physical word at all? Is there any empirical observation that it's postulation helps to explain?
So, you are dark, by choice or naturally.
初めまして。RANDALL博士!書店でピンク色に輝く一冊の本を見つけました!感動的な出会いでした。
I'm 63, and I believe the main questions of the universe were answered in my lifetime. I witnessed the rise of dark matter, the settlement of the debate over the dinosaur extinction, the discovery that the universe is accelerating in its expansion, the discrete transistor to integrated circuit evolution, the advent of human space travel, the move from prop to jet engines on planes, the development of GPS, cell phones, the understanding that protons and neutrons are composed of quarks and gluons, the confirmation of the Higgs field, the discovery of quantum entanglement, the internet...
But people of all times thought they were special. Am I just suckered by my perspective? I've considered that, and still, I conclude my lifetime is special. It's hard to guess what the next generations will do for the next act.
Advanced robots in every home, practical quantum computers, and photorealistic virtual reality could be fun in the future
They will develop anti-gravity tech and use it to explore space and other dimensions
Some people still think man walked with the dinosaurs 6000 years ago and we're really living on a flat circle lol
@@marylousherman5471 Try Wal Thornhill's " The Long Path to Understanding Gravity" on youtube...
Future generations may come up with wonders that would be as miraculous to us as the airplane was to the cargo cult people in the Pacific.On the other hand ,they may blow themselves to kingdom come with discovered or undiscovered forces.
This woman is so incredibly smart. I love her presentation style too she can explain complexity in plain English so well.
Yeah! "If you were a dark person..." (20:01) and "dark light" (24:32)
To achieve this level of knowledge requires dedicating one's entire life. There I see no room for anything else.
Brilliant lecture really enjoyed it, thank you Lisa
Enlightening. Explanatory . Clear presentation delivered in a Refreshingly Engaging, down to earth manner. Enjoyed ! Seems to me we're only beginning to realize, what's really Out There. Good luck with your investigations, which I reckon will reveal many revelations, just like the realization of the Milky Way Galaxy, being one of Billions !
I'm such a huge fan! I have often had to replay her stuff again and again, not just to pick up on the points she's making, but because I'm terribly distracted by her beauty. It would be so much easier if it were nothing but an audio track, but unfortunately, I have to gaze at her beauty, again and again. What a very pleasant conundrum! Ms. Randall, you make learning fun! And, with all due respect, you are a terrific educator and a major influence to many!!!
❤❤❤❤❤❤❤❤❤❤❤❤
Dr. Randall, May I suggest that you
attend a meeting of Toastmasters
International? Your presentations
would benefit from a simple step
that TI practices.❤️❤️❤️❤️❤️❤️
Love listening to you talk. I will begin to follow your work. I never knew of you before. I will use you as my learning tool for Dark Matters and Space. Besides you are beautiful. Thank you this video.
Respect for your humility .....
I think she doesn´t like to give presentations right in front of an audience, she seems a bit nervous, which she shouldn´t be, she is damn smart and it´s great fun listening to her.
I could lay my head of her lap, listen to her speak for 10min about her theories of existence, then die.... And that would be okay.
Muito sensual e pessoa inteligente...
Pretty good with the exception of her vocal fry.
I can't put it that poetically, but I can always listen to some Lisa Randall in the evening and relax.
I would gladly lube her vocal chords.
John Robert Information doesn't interact with your grey matter.
She's a Rock Star. So great.
SO SHWEEEETTT...much love Tee with LIONS NAMED LEO.[the music worldwide}
YES.......GREAT VIDEO..!!
its hard for me to understand , i am trying . but i love her
She has Hi Level insight.
Dark matter is very complicated,but she will prove in her life
Excellent book; highly recommended reading.
i love her She is freaking wonderful
just had the identical thoughts..!
YoungMasterpiece 🌸🌼
Spot on lisa, I find it very interesting your conjecture about a 5% Transparent matter of greater complexity then the other 95% of Transparent matter (TM), if you can say that proportional too the complexity of the Relativity spectrum you find N number of atomic structure expressions, so that the Transition spectrum of which TM is found on and proportional too the reduced complexity of TM you will not find as many atomic structure expressions as on the Relativity spectrum, however it is a magnificent idea you have that in the formation phase of TM a 5% portion remained in a fusion state long enough too obtain a greater complexity then the other 95% of TM but the 5% of TM still remains on the Transition spectrum because it did not gain enough in its fusion phase transition of complexity too make it on too the Relativity spectrum, very good idea Lisa!!!:).Peace and love, Doug.
Pure genius! Would love see her in a conversation with Marjorie Taylor Greene
That's really brilliant!
Thank you for your lecture, interesting concept
Awesome talk!
Awesome Babble about nothing.
i think that light we see from the universe is from the past and we see the expansion that was occurrying during the big bang, but now with the santilli scope, we may soon notice that we are now getting closer and closer until once again a big bang will reoccur.
When it finally all boils down, I think that the space/time fabric will finally be identified as dark matter. Since time and space are intertwined, as time increases so does space thus causing the universe to expand.
These physicist invent something out of nothingness. Perhaps it's just empty space with some kind of force field caused by time space distortion, or it's just because we are living in an imperfect universe, with patches of glitches that defy physical laws.
She is wonderfully coherent.
Brilliant:)
I find that the reference to dinosaurs as particularly appropriate when lecturing on dark matter. As the theories of MOND and Emergent Gravity are developed, and evidence to support these hypotheses mounts, I expect that scientists that have bought in to dark matter orthodoxy will in a few years be regarded as scientific dinosaurs. I would suggest that lectures on dark matter be infused with a modicum of scientific humility, acknowledging that the dark matter hypothesis is based on the assumption that the laws of gravity, as we currently represent them, are absolute at all cosmic scales. Another note: by definition, an hypothesis is a speculation. To say that Dark Matter is NOT a speculation until it is proven to exist (not merely inferred) is untrue. To assert as a fact that the cosmos is comprised 95% dark matter/dark energy and 5% baryonic matter is again a speculation based on the assumption that the dark matter hypothesis is valid. Perhaps is would be better to not represent these speculations as absolute facts.
Are the elements of the pie chart evolving? In the distant past; was the pie chart different?
This talk and Charlie rose's interview gave some of theses thoughts additional extentions to ponder a little more sparks of light to our overall connections existing organically and what not made of...bits and sub bits still unknown... yet to be...
Thank you it was very good to see this.
To paraphrase Rowan Atkinson scientists searching for dark matter are like the blind man in the coal shed with the lights off looking for the black cat which isn't there.
oh yeah
And you know the cat isn't there, how?
Something is there. That much is known, but no one knows if it's a cat or something that just seems like it's a cat. It's just that in that scenario you're talking about, the cat can be heard but no one can find it.
Alex Bowman WHAT!!!
"The dark matter does not much matter; what really does matter is the grey matter". by W.W. Banasik (2016)
Does light pass through your ears? Or is that just dark light? Haha
Huh?!
she is very smart , i find her so cute .
I'd like to see Nigel deGrasse Tyson in that jacket.
So it's now the Cretaceous-Paleogene boundary, K-Pg. This also may be thought of as the Mesozoic Era-Cenozoic Era boundary. Periods are subdivisions of eras, and the older one is listed first.
How to estimate a proportion if the universe is infinite
This is so amazing! Thanks for the ASMR video guys!
Lisa ❤
Nice video ❤🎉😊
It is very refreshing to see a woman who wears a decent & proper amount of makeup instead of globs of pathetic ordinary matter hiding her true beauty. Am also very glad she is not composed of dark matter which makes her composition easier to distinguish within my ordinary eyes.
"Dark Matter and the Dinosaurs"... I thought this was a reference to current events haha
Lisa Randall does a brilliant job with ambiguity in her opening speech talking about "current environment" and "fragility", making her innuendo all too clear. Queen shit
She looks good for a cosmetologist!
What the heck is that supposed to mean? What does an ordinary cosmologist look like? Smh
A scientist can look like anyone
Lisa, stars, pie, yes. Im in.
This woman is a genius among suckers and a sucker is born every minute!
#Connect "There it is!" #KK
Interesting stuff.. but only the parts that i understand.
I say when the north and south poles kicked in and the plate's went, there use to be a 40ft ice shelf in new York City and the fact that they could have been warm blooded. I've seen a lot off impact some very serious but not quite enough to wipe life out would love test to see?
How do they find these things out is the question
Conviction is more dangerous for science than lies, because a liar can still know the truth while lying. While convictions are blinding
Hear dimension antimatter is a great one there there but don't generally interact unless you use a machine to pull it in and hold it so where are they in it looks a little up or down to ours but likely in the same space time may be not😆?
Do you think Einstein said "um" when he talked?
Dark matter is not part of our physical universe. Instead, a parallel universe made of purely dark matter !
Khalid Masood
how can we know which percent of earth mass is dark, and are our gravitational constants good ?
Or has this percent changed in history, for example by sweeping up (or releasing) some new dark mass from galaxy disk on each pass by earths gravitatonal well ?
if it interact only gravitationaly, it will orbit either around earth/sun or fall into its center if it has no centrifugal orbital momentum as ordinary mass.
Cosmological observations of the behavior of galaxies and the movement of stars allow scientists to calculate the effect of gravity, which is the same as Newton wrote in his Principia in the 16th century. The gravity calculated with Newton's equation given what astronomers can see with telescopes does not explain the motion of stars orbiting in galaxies -- there should be much more matter there than observed. They proposed dark matter as the unseen mass responsible for this extra gravity that explains the motion observed.
Currently, we only observe the gravitational effects of dark matter. We have not seen it interact with our regular matter and energy in any way, at least not yet.
ok, but Newton knew nothing about dark matter, he knew only for ordinary matter; but now "scientists" know it.
How can "scientists" today be sure that all the mass in the earth gravitation well is from ordinary matter, not from dark?
They cant, they just assumed it is, but this is just assumption, and today "scientists" can see it is probably wrong .
sve utripm which scientists know that? Please, pray tell. Geologists, seismologists, physicists, planetary scientists, no one has found any reason to doubt the thousands of measurements done on earth and any other space body's gravitational field.
By the way, there is only one gravitational constant. Not a dozen. And thousands of observations and experiments have refined its value and proven it correct.
She seems so sure that DM exists as well as DE, it would be catastrophic for our cosmologists to discover that both don’t exist, wouldn’t it?
If dark matter did not interact with anything except gravitationally, it would not repel itself at all, and therefore it would clump. So "dark light" is necessary for dark matter to exist and result in the effects we observe.
So.. Dark Matter is in the middle of the Galactic Plane. So... Would the same be true of the Solar system plane, the planets orbiting in a disc of Dark Matter?
Electric Universe, see thunderbolts project
Can black holes consume dark matter?
The crater was an eruption/ not a meteorite. Probably somehow chalk took the place of carbon in that intermediate period and also forced a quick climate change which erased the dinosaurs. It probably had a lot to do with the water/ land equation on earth at the time, which will also not return once heaver particles are settled.
Arts & Ideas: “Dark Matter and the Dinosaurs,” JCCSF, San Francisco, CA. Nov. 2015
scholar.harvard.edu/lisarandall/public-lectures This provides link shows a list of her lectures.
I haven't got a Scooby Doo (Clue) what she's talking about but she is absolutely gorgeous.
Wonderful. Thank you. Raphael Santore
If Dark Matter has gravity then it does interact with light by bending it and curving it.
Imo, the elephant in the room for dark anergy and dark matter is our religious presumption that we are important to the creator of all things (god). If he created all this simply to give us a comfortable place to live.... then what is the point of of having “dark” things that we cannot interact with?
Pardon, what evidence that black holes can sollow dark matter?
Thank you,
How do scientist know that ordinary matter makes up only 5% of the universe when we don’t know at which point the universe ends? They should rephrase that statement to “We know ordinary matter comprises of 5% of the ‘observable’ universe.”
Dark matter, invisible matter, transparent matter, and many more ways to call it, but at the end is just our perception. We really don't know anything. Theories are just theories.
Examples of "dark matter": wind, conscious, demons, gravity, etc..
Wild speculation based on a lack of understanding, couched in specious scientific terms has little chance of being correct but it is worth getting it out there, just in case.
So, dark matter interacts with gravity. Could gravity be seen as a sort of *attraction*? And, if so, would that attraction include the realm of thoughts...as some philosopher/theorists have postulated? In which case, is it possible that our thoughts are part of what interacts with dark matter and contextually we are involved in the process forming reality?
Hello there,
1. Gravity, by definition, is a force of attraction... so I'm not sure what you're asking in your first question.
2. Gravity is observable and experimentally verified by experiment i.e. scientific method. Thoughts are not measured in the same way-- perhaps you could say that brain activity/electrical impulses are the reductive cause of thought-- so I would say no, science has not observed "thoughts" (which is not itself well defined) to be interactive with the fundamental forces. In other words, if one could describe thoughts in a scientific and measurable way, then your question could make sense.
3. IMO that's a stretch depending on assumptions in #2, and sounds more philosophical than physics...
Cheers
No.
No.
juntao11 - No!
Very good. You're on the right track.
matter dilutes and eventually dark energy will be everything and the universe will be empty with no ordinary matter in it. I only remember what she said in the last 3 seconds of her lecture.
My hypothesis that Dark Matter is not a weakly interactive massive particle (WIMP), but maybe is a deformation of space-time by which the curvature of space-time itself is the cause of the gravitational effect. Gravity is the consequence of the curvature of space-time when mass is present. It may be possible that the structure of space-time itself could be warped without the presence of mass. So, how did this warping occur? We believe this warping of space-time occurred during the extreme conditions present during inflation. Space-time has been shown to react like a fabric by warping, twisting, and propagating independent of mass. These properties have been proven with observations of gravitational lensing, frame dragging, and now gravitational waves. Fabrics can be stretched, pressured, and/or heated to the point of deformation. Such extreme conditions were all present during inflation, so it is plausible that space-time’s elastic nature could have hit its yield point and permanently deformed. Therefore, if gravity is the consequence of the warping of space-time, and fabrics can be permanently deformed, then a deformation could create a gravitational effect independent of mass. Thus, the unidentified dark "matter" that seems to be so elusive to modern science may not be matter at all but merely warped deformities causing gravitational effects. We have a prediction using gravitational lens mapping to prove Dark Matter isn’t a weakly interacting massive particle, but instead is a floating fixed pocket of warped geodesics in space-time geometry causing gravity wells.
37:45
Science: give us one free miracle and we'll run it from there.
Nice jacket
What this isnt guitar amp video!? :O
When Einstein put to paper his explanation of gravity, the entire universe was just our galaxy,and more importantly, a static galaxy with stars happily sitting more or less motionless in space.The telescopes up to that time could not resolve the various fuzzy blotches of light seen all over the night sky into what thy really were,massive collection of stars just like our own galaxy. The new and larger telescope that Hubble was using was able to for the first time to see that these fuzzy blotches were actually other galaxies. And by measuring the red shift of individual stars in those galaxies he determined that the further away a galaxy is from our galaxy, the faster it is moving away from our galaxy. It is the rotation of galaxies that keeps the stars within them more or less stationary.
Another scientist pointed out to Einstein that his gravity equations do not allow for a static universe, and that the stars either had to be moving out away from each other, or they have to be collapsing back into each other to a central point. To allow for a static universe Einstein had to create a mathematical fudge factor that he called the Cosmological Constant that allows for just the right amount pressure by an as yet unknown force to allow for a static universe that the best telescopes before Hubble and his bigger telescope seemed to show.
Particles now look waves guess when
Without time radioactive resistance
Movement rainbow 🌈
Rain air blocking all polarized light
Three lens rule then light bleakers
Nice 💛
Dark Light ??
This reminds me of Richard Muller's theory of Nemesis. A brown dwarf or similar orbiting our solar system in a highly elliptic orbit and knocking Oort cloud objects into the inner solar system.
Eleanor Ann Arroway!
" THE PARTICLE GODDESS " would be a great title for Professor Randal's Hollywood Bio - Picture , ...I'm sure some Sci - Fi, Special EFX producer is developing it now!! Steve Jobs, ..Stephen Hawking, ...she's next ? I say cast " NICOLE KIDMAN " as Lisa ?!!
I would like to hear more of what you say, but I don’t like to hear the broken phrases and the word um, be more fluid please
So that explains how magicians could pull rabbits out of their hats! It's from dark matter!
Physicists tend to think the universe is perfect, running perfectly according to physical laws without any glitches or mistakes. I think this kind of view maybe a mistake in itself. What if our universe is imperfect, with patches of glitches here and there throughout the space time continuum? If it's called missing matter, then the answer maybe just that - nothing except empty space. How could physicist "invent" something called dark matter when there is literally "no" matter?
I think The Police might have been right: "We Are Spirits In A Material World". They said this around 1980.
and that 'theory' was not created by the Police and certainly, far predates 1980...
The beautiful woman build a beautiful theorie.
There are no black holes. Only dark matter dark objects and high density objects exoplanet and things like that. Waves move between these called free space.
The sky is dark because of absorption of light by dark objects. Event horizon is dark atmosphere.
The stars burn and glow because of intense lines of dark object solar radiations winds or flares.
Our solar system is a chip of the old blocks.
Gravity is intense solar flares.
Sun creates pushing effects on earth called gravity.
She can get me in a quantum entanglement anytime.
Might the sun be orbiting a dark star that itself is orbiting a dark "something" or a black hole at the center of the galaxy?
We would have plotted that by now.
They HAVE plotted the suns course and it was said they don.t know what's causing it's motion. So how many hypotheses are there?
Who says it isn't known what's causing its motion?
The motion of the Sun is due to overall gravitational effect pulling centripetally towards the center of the galaxy.
Amazing...out of nowhere come "revelations" such as this - that it is not known what causes the motion of the sun. It does not matter if this has been explained not long after Newton, what matters is that some "sage" says science does not explain something...
Sad.
it is package material left by the big unpacker...
paradox - late or early.. does it really matter ;)
higher density - more heat retention - less forming of masses like planets ?
if blackholes can grow after absorbing/consuming dark matter/gravity.. then there must be interaction between matter and dark gravity/matter - or not ?
Gravity is GODS Consciousness. ! Dark matter is Water in an other Dimension !
Event horizon is the only place to avoid.
Can Dark matter be the very particles we now know of but just large amounts of it in huge condensed clusters. Clusters that spread for hundreds and maybe even millions of light years.
No.
No.
Read the explanations, know the theory first. You'll see that ordinary matter does not "act" like dark matter. Huge clusters do not act the way dark matter does.
Entirely different things, OM and DM.
And by the way, the DM halo around galaxies such as ours does not spread across millions of light years. It is relatively local and affects our galaxy and other galaxies directly.
Thank you for the explanations. I don't know so I ask.
Yes. Thats all it is, but you will only get funding for crappity-blah-blah.
A very attractive and well educated woman on her way up, to money. More new age than hard science. She should submit this to a peer reviewed journal as people working in physics, astronomy, cosmology and other fields do. This is not science, but informed speculation - like good science fiction.
Zug Zug!
The dark matter is simply magnetic field what influence normal matter same as gravity #