The idea of mixing the lecture with Meditation was amazing while explaining Gravity was one of the most creative ways to explain something. She is amazing.
@leighkite1164 Жыл бұрын
Yeah, I'd actually unified quantum with relativity during the meditation, but then a KZfaq add jarred me out of it and I lost it all. :D
@ksbalaji12878 жыл бұрын
That was a beautiful lecture, thank you Dr. Dowker. Would love to hear more from you about the new theories you are working on. Such a clear presentation of the difference between Newton's view of gravity and that of Einstein ! I am a school level Physics teacher in India and am going to use this. Thank you.
@samneil86315 жыл бұрын
Pls don't teach them about space time curve . Bcos its just a theory . They also cannot able to explain why spacetime is warped towards the center of a heavenly object, and what is the degree of this curvature or graph of warping . Every varification still needs the support of newtons universal gravitation formula .
@a-square40855 жыл бұрын
@@samneil8631 Really, have you wondered why K S Balaji hasn't answered you yet? That's because you're just wrong. Sucks being wrong doesn't it.
@esisimp1234565 жыл бұрын
@@samneil8631 Actually that is not true. General Relativity is extremely well tested. Even the GPS in your phone will not work properly if non-Newtonian effects arising from curved space time are not included. The time actually runs faster for a clock in a satellite in orbit compared to a clock on the ground on Earth and you could literally see this difference using a very accurate atomic clock. The only reason GR is not taught in school or (in many places) undergrad is because the maths is very difficult. what you might be confusing this with is things like string theory or quantum gravity etc. Those are currently more speculative/mathematical frameworks without any hard experimental evidence backing them. In that case scepticism is understandable.
@esisimp1234565 жыл бұрын
@@samneil8631 Also it is actually not that difficult to calculate the curvature of spacetime around a spherical heavenly object such as the sun. Even a smart undergrad student in physics can do that. The reason people often use Newton's gravitational formula is because the difference in answers from the two theories is very small for such small mass objects such as a star, while the mathematical calculations in Newton's theory is much much easier. So usually people are sacrifice a little accuracy for significant simplification of calculations.
@samneil86315 жыл бұрын
@@esisimp123456 ok . I don't know what is true . I leave it to the scientist.
@chipkyle54283 жыл бұрын
Her careful pace and deliberate selection of words allowed her message to "sink in." Her intention was to see that I understood complex ideas rather than impress me with her brilliance. I did learn and at the same time I learned she is brilliant. I will look for more lessons from Fay Dowker. What an honest teacher. Her ego never got in the way of learning. Bravo! We need more of her.
@KB-uv7wj5 жыл бұрын
Finally, someone who understands the subject.
@BoatingBiker5 жыл бұрын
Dr Dowker, Thank you for your fascinating lecture. Absolutely riveting stuff. I didn't get every point you were making so I will be taking several goes at seeing how far my understanding can be expanded. Thanks again.
@bobpalka20855 жыл бұрын
Thank you Ms. Dowker for this enlightening lecture. I'm one step closer to understanding GR and gravity then i was before.
@acezar26448 жыл бұрын
I fucking love this channel
@TheRoyalInstitution8 жыл бұрын
+Axel Cezar Thanks, the feeling is mutual.
@cygil18 жыл бұрын
+The Royal Institution The royal institution fucking loves Axel Cezar?
@Mandragara8 жыл бұрын
+cygil1 That's not what that expression means haha.
@reecelongden35008 жыл бұрын
+Mandragara Yes it is, it means "and I/we feel the same about you"
@JooJingleTHISISLEGIT8 жыл бұрын
In this case they are referring to themselves. They feel the same way as Axel Cezar.
@muthukumaranl5 жыл бұрын
Obviously the lecture itself was good...but Its the mention & encouragement of the use of meditative/reflective/original thinking techniques by the professor that i found really useful not just here but in general as a tool to think 'out of the box'...thank you!
@sherlockholmeslives.16053 жыл бұрын
Leonardo da Vinci ( 1452 - 1519 ) said that objects fall to the centre of the Earth. Not just that objects fall to the Earth but that object fall to the centre of the Earth, and he said this before Galileo ( 1564 - 1642 ) and Newton ( 1642 - 1727 ). It was a ground-breaking piece of insight!
@JianYZhong4 жыл бұрын
Thank you, Fay, for such an illuminating lecture on General Relativity, presented so carefully. I even learnt something about meditation!
@owen71855 жыл бұрын
Excellent lecture Professor Fowker. Very easy to follow and the material is very relevant and important to the story of spacetime
@sherlockholmeslives.16053 жыл бұрын
Leonardo da Vinci ( 1452 - 1519 ) said that objects fall to the centre of the Earth, not just that objects fall to Earth but that they fall to the centre of the Earth, and it was before Galileo ( 1564 - 1642 ) and before Newton ( 1642 - 1727 ). It was a ground-breaking piece of thinking!
@ricardoabh32427 жыл бұрын
Very clear and relaxing lecture :)
@csam84552 жыл бұрын
Truly the most concise & inspiring speech, thank you
@MrLeighman6 жыл бұрын
Great talk. I actually visualised complicated theory's that previously I had struggled with. Basically: there are no forces between objects only the curvature of space time that they make. The changing of space time by an object acts apon other objects instantaneously. The speed of light remains constant and is independent of space time. Thanks
@cmacmenow7 жыл бұрын
Fascinating and engaging talk;made more accessible by the very talented Ms Dowker. Wait to you hear her thoughts and understanding on "causal set theory!" Incidentally, the graphics and overheads are very well designed.
@tomtomski44548 жыл бұрын
Such a calm and clear presentation! I really appreciate it! Great done Prof. Dowker! I wish I had had my physics lectures with this woman... instead extravert blackboard animal mine lecturer was.
@racarth18 жыл бұрын
+Tom Tomski She teaches me GR and I can confirm she's a great lecturer.
@bobaldo23395 жыл бұрын
My subjective reaction: There is something intuitively correct about the idea of new grains of space time popping into existence. It is a pleasing and somehow liberating idea.
@darkestnile10568 жыл бұрын
Brilliantly explained. I learned a lot. Thanks
@Orlando91615 жыл бұрын
if i do have a feather in my right hand and a bowling ball on the other and i let them drop of my hand ,,they wont fall at the same speed....so do not understand the fact that two object fall at the same speed..
@flopsnail47505 жыл бұрын
@@Orlando9161 there's an AIR-or in your experiment.
@tantiwahopak1014 жыл бұрын
@@Orlando9161 that experiment will work in a vacuum.
@jansvedman38763 жыл бұрын
One of the best lectures I have seen on the subject. Fay succeed to explain very complicated issues in a simplistic way - and thats very hard and tricky ! Well done.
@Robinson84912 жыл бұрын
This was great. Loved her meditation on not feeling gravity but only the normal force to introduce the value of Einstein
@Ronilac3 ай бұрын
As a freediving instructor, I never ever suspected that teaching the breathing and relaxation techniques for freediving I teach the special relativity theory... nice to know
@robertglass16986 жыл бұрын
I found that the meditation part was helpful. Remember that it isn't meant to confirm the theory, it's meant to support the conjecture that General Relativity is more in line with experience--which isn't exactly an empirical claim anyway. However there is plenty of good evidence which shows that our active or fast thinking mechanisms often make broad generalizations about what we are experience--if a little reflective thinking can get me to focus just on what I'm experiencing and not my interpretation of what I'm experiencing, then great.
@panosgamer835 Жыл бұрын
Αςαάάαααάααάάαα
@panosgamer835 Жыл бұрын
Άααα
@stevefaure4152 жыл бұрын
What a wonderful, thoughtful, and entertaining lecture. You don't often come across a teacher both so smart and engaging.
@whirledpeas3477 Жыл бұрын
On the internet, really?
@patrickcash28 жыл бұрын
this is golden.
@terrywbreedlove6 жыл бұрын
How does mass actually act on space time and warp it ? I understand that is what is happening but I never hear it explained.
@vickash10724 жыл бұрын
nice question terry 🤝
@david2034 жыл бұрын
We're still near the beginning of our understanding of physics, thinking we know a lot. But it's really a lot of detail, and many big questions have not been answered.
@rayjax144 жыл бұрын
you really hit quite the spot i would say, despite how much we are able to formulate or explain the gravitational force, our understanding of it is rather incomplete and as far as i have heard here and there in the other youtube videos about gravitation there isn't yet an "complete" explanation or mechanism as to how gravity works.
@dreianj4 жыл бұрын
I gather from the picture and lecture that space time is a field. Matter causes that field to distort. Like hanging a towel over a basket and then setting a ball bearing in the center. On the surface, the surface of the towel is indented. Closer inspection shows that the relationship of the fibers themselves has also been distorted and the tension on each fiber has changed in direct relationship to the mass of the object. Those distortions due to an object's mass also cause friction when moved through space-time and maybe the speed of light is the highest amount of distortion that the space-time field will allow like trying to force the water from a fire hydrant through a garden hose. As this gravitic-friction increases with speed, my guess is that when an object is moving closer to the speed of light that the effects of not only distorting but also stretching ST become apparent. The ST field, having its own binding force begins to experience that stretching over a wider area. With enough power and cohesion, the object would be pulling space time into a tube around itself and then eventually dragging reality behind it. That's what I got out of it. If I'm out to lunch, let me know.
@michaeljones74653 жыл бұрын
@@dreianj You cracked it on 3 levels. Just as a planet will warp space around it, like a marble moving inside an inner tube, a black hole totally warping space around it & your towel analogy can now be applied to string theory.
@TanerNilluhktaf6 жыл бұрын
Boom! There was a brain explosion when she said there's no force of gravity on the body. Body just follows the curvature. It's just because space-time is curved. But in Newtonian mechanics we conveniently use force of gravity for that effect.
@mrnosy18 жыл бұрын
Hey! It's my math analysis lecturer...
@jamesdolan40424 жыл бұрын
"It's my math analysis lecturer" does that phrase need to be reworded.
@mateopelufo25558 жыл бұрын
Excellent! Thank you very much. Carlo Rovelli explanation says that there is no time at all: it´s all a comparison of movement. I found that notion useful to understand "space time" (taking away time). The movement of anything is affected by the space in where it takes place.
@mateopelufo25558 жыл бұрын
even the watches...
@Gyroglle8 жыл бұрын
"Try to become aware of the sensations in and on your bottom". Will do miss thanks.
@a-square40855 жыл бұрын
I couldn't handle it. Had to stop. She annoyed me with her constant "tsk" with her tongue, the meditation was the last straw.
@JJs_playground5 жыл бұрын
Great talk. One correction I thought Einstein happiest thought was his thought experiment where he managed a man falling in an elevator and deduced he would not know the difference between gravity and deceleration/acceleration.
@brainstormingsharing13093 жыл бұрын
Absolutely well done and definitely keep it up!!! 👍👍👍👍👍
@jameso14473 жыл бұрын
23:50 Force without force. Infinite gravity from nothing - a gravitational field composed of nothing made of 'space time itself' which is made of nothing with infinite force but it's not force because if gravity was a force than the gravitational field of nothing has infinite potential. Circular and paradoxical. General Relativity.
@shahulhameed36252 жыл бұрын
Whatever you observe is past What you realise is present What you anticipate is future.
@michaelkreitzer13697 жыл бұрын
The amount of armchair experts on the wrong end of the dunning-kruger curve or just complete crackpots that come out in these fascinating video series comments sections can be so depressing.
@glarynth7 жыл бұрын
You can't let it get to you. Trust me, you'll go nuts.
@tomhalloway66746 жыл бұрын
Michael Kreitzer bnaturecomplexityreality
@Hank2546 жыл бұрын
Is the number of crackpots increasing or are there just more of them finding KZfaq?
@3rdrock6 жыл бұрын
Michael - lol, it's the arrogance of ignorance, idiots don't know that they are idiots. That's why they are so comfortable spouting bullshit.
@wesjohnson68336 жыл бұрын
Well demonstrated
@chrisofnottingham8 жыл бұрын
if some region of spacetime is curved, what is it curved in?ie, what is the reference frame that we consider to be straight?
@blenderpanzi8 жыл бұрын
+chrisofnottingham I was told by a physicist: Mathematically it doesn't need to be embedded in a higher dimensional space. But it could be, who knows?
@chrisofnottingham8 жыл бұрын
+bloody_albatross Embedded or not, "curved" implies a deviation from a straight line. What is this straight line?
@blenderpanzi8 жыл бұрын
+chrisofnottingham In this context I got curved explained like this: Look at the analogy of 2D space. Imagine some cloth or other sheet (this time in 3D space just so you can look at it). If it's simply folded it is not curved. Only if you cannot flatten it to a flat surface without stretching some parts it is curved. So a woollen hat would be curved, but a folded handkerchief would not. I'm just replaying this information as I heard it. I'm not pretending I understand it.
@chrisofnottingham8 жыл бұрын
+bloody_albatross The trouble with that explanation is that it requires another dimension, but GR is fine with 4D spacetime and no other dimensions.
@broadwayat8 жыл бұрын
+chrisofnottingham we see space via photons or light waves If a portion of space were curved, it would still appear as a straight line to us, because the photons would travel along the curve and we wouldn't be able to distinguish it from normal space. Sometimes, you can observe this during a solar eclipse.
@KorAllRBare5 жыл бұрын
Let me repeat.. Wouldn't it be bothersome if all Mass were repulsive including the mass of Near-Vacuum, "That's right no such thing as a magical attraction" and what's more the more energetic the mass the more repulsive it would be, Which would mean the Near-Vacuum would actually be the most repulsive as its ratio of Energy to Mass would have it as the most energetic, it's the only "constituent" or "Matter" supporting Maximum Velocity, which BTW is faster than the local speed of light Eg: "Our location within a Galaxy" And yes I treat Near-vacuum as matter, a highly energetic mass with near to zero density as it hasn't experienced fusion, a media that makes up all atoms. The fact is, Near-Vacuums repulsion is responsible for Fusion, and for that matter the accumulation of all less energetic matter, but that becomes only apparent if one understands how Energy is stored or converted to Mass via "opposing velocities being cancelled out", Which basically means the Near-Vacuums accelerating expansion must expand into all the newly created spaces left over after the fusion of atoms. So yeah.. Does that accelerating expansion sound suspiciously like anything else you may have heard about? Could it be that simple? Mind you this would mean the Entire Universe is actually a wave Function rather than some crazy Big-Bang Theory, thus no need to refer to contradictory terms such as a zero point in time etc. And what about that accelerating inward momentum as fusion occurs? What would that force be? Repulsive or Attractive? The ignorant see it as some magical attraction, Whilst those of us who clearly understand Force, General Relativity and Mass/Energy must also clearly understand the mechanics, in fact we have no need to rely on Dark Matter and Dark Energy to explain a Galaxies physics, as those terms are only for morons who simply don't understand the basic physics, and more than likely are just bleeping like sheep lost in a wash of theoretical Mathematics. Here's another thought, what if the Universe were Finite? It would make perfect sense, because once EVERYTHING is quantified we have nothing left, Only then can we treat Everything as a single closed system (The Universe=1), Everything sums up to a single closed Universe, ergo all quanta/s would then have to be a percentage or fraction of 1 and thus if we are to mathematically prove expansion, Some quanta would need to accrue whilst another quanta or set of quanta's reciprocate, Put simply it just needs us to work with Mass/Energy or if you wish Space-Time right down to the Quantum level. But only if we treat all space as matter, a ratio of Mass/Energy, only then will it make so much more sense, and this would be right down to the quantum level, Granted working with this simplistic model, we don't have the luxury of the current disparity at the Quantum level like main stream has, So unfortunately, we may need to fudge some figures into this model so it too may have the current disparity, but until someone knows what those figures need to be, Then this is how I understand the universe to be..
@dreamdiction4 жыл бұрын
Yes.
@philoso3774 жыл бұрын
Newton would laugh at Einstein’s light speed limit because earth would eventually swing outside the solar system when gravity takes 8 more minutes to reach earth. That nothing moves faster than speed of light is a declaration but laws of nature. The reason why you are reading this message safely on earth is because gravity is instantaneous that is another reason suggesting that Einstein is a daydreamer far from being a practical physicists.
@ronintennispro77088 жыл бұрын
Ms. Fay Dowker... what a Beautiful Woman with a Beautiful Mind! I love her voice, she should be the new Voice of Siri and I would switch to Apple's iOS immediately :)... BUT I Digress... I have been obsessed with Quantum Physics since my 10th grade Science Project on Light as a Particle versus a Wave using a Medical Electron Accelerator my father had access to as Chief of Vascular & Interventional Radiology... CHEERS RI :) !
@ronintennispro77088 жыл бұрын
CHEERS Ri* :)
@noahway135 жыл бұрын
You must like robots.
@tichaonamachiya32049 ай бұрын
I propose that both Newton and Einstein were right. Its just that attraction between 2 large bodies is caused by the sub atomic particles. When they are condensed into one large body the force becomes intense.
@wulphstein2 ай бұрын
Can someone explain to me why: over the last 50 years of studying black holes, we learned that the clock slows down as you approach the event horizon (go deeper into the gravity well). But nobody has proposed that there could be higher gravity potential energy "planes" or "dimensions" where the clock runs faster. Like a skyscraper where the event horizon is in the basement, we are in the first floor. The clock runs faster on the second floor, so that spaceships can move faster on the second gravitational floor or dimension. Maybe you have to get to the 50th gravity floor, where the clock runs 50x as fast, before you can think about using the 50th floor for interstellar travel.
@lepidoptera9337Ай бұрын
The clocks never slow down or speed up. The signals just take longer to get to us. You need to go back to school.
@erikziak12498 жыл бұрын
Interesting hypothesis by Rafael Sorkin. Could this explain entropy?
@michaelhull18137 жыл бұрын
Erik Žiak The Second Law of Thermodynamics explains entropy sufficiently, don't you think?
@mrwideboy5 жыл бұрын
I love listening to her,
@gnorman-ct2ltАй бұрын
I like her she's holding back a lot in some of her interviews
@roger_is_red3 жыл бұрын
wow I love her clarity!!!
@peterpark6994 жыл бұрын
If an object is in a range of gravitational force, where the force is still in reach of its own arm, then the force act as a magnetic field, in a sense, where the sign of force is already glued to the object. This can be envisioned from the demonstration that the scientist, Ms. Dowker, performed during her lecture. Thus, the sign of change of gravitational force due to change of distance between an astronaut and the earth doesn’t relate to the case where the special relativity may be concerned, because the gravitational force, in another words, can be considered as gravitational field where the signal of the force doesn’t have to travel; the force already and always resides in its own criteria. I’m simply saying that the 'Newtonian gravitational force' doesn’t seem to contradict to the Special Relativity.
@venkateshbabu56235 жыл бұрын
Assuming a circular pattern of the cosmos they form what are called circular numbers. The concept of circular numbers arise from right angle triangles. Any triangle can be split into two right angle triangles. So wave nature of particles spread. Calculating the spread gives the numbers 1 +2+3+4+5+.... = -1/12 . Twice is 24. So inverse log is ten power 240 is the micrograins possible.
@inertiaforce78467 жыл бұрын
I have been studying gravity on my own out of my own interest and curiosity for 7 years now. 90% of the videos on gravity do not properly explain it. There are some videos that explain it better than others but even those videos do not properly explain it. It amazes me how many of these videos just explain Einstein's view of "curved spacetime" but they do not explain HOW Einstein came to this idea. They just show you a picture of a trampoline with a ball in it and tell you that's what's going on. 7 years of my own study has got me to learn things that aren't mentioned in 90% of the videos on gravity. These videos are meant to simplify gravity for the public. For me, they did not simplify anything, they raised more questions than they answered. It has taken me 7 god damn years of casual study (my most intense study has been since 2015-2017) to sift through all the bs and come to some real answers. These videos are just meant to dumb down gravity and feed it to the public than to explain what's really going on.
@inertiaforce78466 жыл бұрын
Explain how the ground is accelerating up.
@Celtics-x4w6 жыл бұрын
inertiaforce Any books you recommend on GR or SR? Or any physics?
@inertiaforce78466 жыл бұрын
Watch this video then get back to me: kzfaq.info/get/bejne/fNBnZqV3ldWvaGg.html
@inertiaforce78466 жыл бұрын
If you have any questions about the video, let me know.
@inertiaforce78466 жыл бұрын
The whole point of that video is to show that you can't tell that you're accelerating. Any questions lol?
@oilinki38 жыл бұрын
I don't understand why there wouldn't be an universal 'now'. I would think that it's possible to take a snapshot of the universe, which requires that universal now moment. For us, observers on Earth, the now on Alpha Centauri is not what we observe happening there at the moment, but what we observe after 4 years, once the information from the same now moment has reached us. The talk was wonderful. I have to rethink the whole concept of spacetime. According to this talk, spacetime cancels the concept of gravity, in the traditional way. That would make a whole lot of physics calculations way different in the gravity dip, like Earth, compared to the open space, away from the gravity centres?
@ahappyaxolotl12108 жыл бұрын
+oilinki3 Even "now" is quite relative, according to the fact that eventhough light from terrestric distances reaches us almost instantaneously, there is always a certain delay until the path to our eye is been travelles by a ray of light. Eventhough these timescales are irrelevant for us, on smaller scales we are basically constantly experiencing a reflection of the past that we live in and move through, on that basis there is no exact "now", just an arbitarily decreasing notion of the past.
@Valdagast5 жыл бұрын
I needed this after watching Flat Earth videos.
@suddndestruction61993 жыл бұрын
the problem with sun is .. energy falloff . its..drastic.. over distance it loses energy really fast.. so.. little bit after earth would be freezing.. and source would be tremendous.... and how can we see star light if its faaaaar away? basically what im saying is also about sun angle.. more angle less energy thus we have antartica? this is really extreme drop of value over space.. its just not possible to have source of energy faaarfar away
@tibbar10005 жыл бұрын
I must have one of Newton's laws stuck in my head...the one about an object at rest remaining at rest, etc...because I cannot believe the dropped object moves without a force acting upon it. I did not stay with her when she answered the question about the dropped microphone. I would enjoy hearing a more detailed explanation of that portion.
@MrAlRats4 жыл бұрын
On the surface of a massive body, such as the Earth, the matter content of the body (the electromagnetic interaction between the body and ourselves) prevents us from undergoing an inertial motion (free fall). This means, we are in a non-inertial frame of reference by virtue of the fact that we are not in free fall. Each location on the surface of the Earth is in a different non-inertial frame of reference. Imagine you're in a rocket accelerating in deep space. If you drop an object, it will appear to fall towards the ground. This is because you are in a non-inertial frame of reference while the rocket is accelerating. On the surface of the Earth, dropped objects appear to fall towards the ground because you are in a non-inertial frame of reference.
@Rawmon948 жыл бұрын
i find it very hard to understand the concept of the curviture of spacetime in a 2 dimensional space like in the picture around 25:00 . Im wondering what the spacetime curviture would look like in 3D drawing. Lets say you could draw that dip in spacetime by earth from every imaginable angle, wouldnt they eventually cancel eachother out?
@kingtriplebbb53476 жыл бұрын
Great Professor, 🎓
@imaam66 жыл бұрын
Me having difficulty in understanding how a curved surface forces an object to go inward particularly in the absence of a pushing or pulling force. And when we come on the earth How this is related to an event when an object fells down from a bed to the floor. Why??
@katrynamcintyre56876 жыл бұрын
June 15, 2018: 1) The heavens are telling of the glory of God; And their expanse is declaring the work of His hands. Psalm 19:1; and 2) Who has measured the waters in the hollow of His hand, and marked off the heavens by the span, and calculated the dust of the earth by the measure, and weighed the mountains in a balance and the hills in a pair of scales? Isaiah 40:12
@symmetrie_bruch5 жыл бұрын
“Three Rings for the Elven-kings under the sky, Seven for the Dwarf-lords in their halls of stone, Nine for Mortal Men, doomed to die, One for the Dark Lord on his dark throne In the Land of Mordor where the Shadows lie. One Ring to rule them all, One Ring to find them, One Ring to bring them all and in the darkness bind them. In the Land of Mordor where the Shadows lie.” ― J. R. R. Tolkien, The Lord of the Rings
@coreybray98345 жыл бұрын
Now, objects responding to a curvature in spacetime would experience a change in direction if they are already in motion, but if you place an object at rest along the curvature of spacetime, and there is no force to motivate said object in one direction or another, this really does not explain why an object at rest along the curvature of space/time should magically be attracted towards or repelled away from the earth either one. If there is no actual gravitational force pulling objects down to the earth, then when Galileo dropped objects from the tower, they should have remained suspended in mid air until acted upon by some force to help identify what direction they should move in. Remember, she went through a whole explanation of why you only feel the force of your chair pushing up, but no force pulling you down. Yet, Galileo clearly showed experimentally that the objects he was dropping did not remain at rest in mid air to comply with this woman’s explanation, but rather the objects Galileo dropped accelerated downwards towards the earth as if motivated by a force with a specific direction to accelerate the objects in that specified direction, and not some other direction. That direction happened to be down towards the earth which suggests that trusting our feeling of pressure on our bottom while meditating, as she had her audience do, is not necessarily an accurate way to identify what is really going on. The first step, as she calls it, depends heavily on our ability to precisely distinguish how much of the pressure we are feeling between our bottom and the chair is due to the normal force pushing up from the chair under us and how much of that pressure is due to the force of gravity pushing down on us. Nothing in this woman’s explanation proved that the pressure we felt was due exclusively to the upward exertion of the normal force while at the same time there being supposedly zero gravitational force pulling down on us.
@laersonverissimo17154 жыл бұрын
Corey Bray . An object at rest (at some referencial) is still moving along the time axis.
@netajibabusimhadati67454 жыл бұрын
"At a distance" shouldn't this be the same problem with magnetic and electric forces? Any force that ever felt or produced doesn't have a continuous matter between force producer and experiencer Eg: I push a ball on a flat surface with my hand. Is there continuous matter between my hand and the ball? How can you accept that force can act over small distance without a medium but not over large distance
@eyebee-sea44444 жыл бұрын
Electromagnetic forces are understood as exchange of virtual photons, according Quantum Mechanics.
@nisshantvernekar62455 жыл бұрын
Great one. THANKS FOR THIS.
@Rico-Suave_4 жыл бұрын
?? not able to fully grasp what she was try to convey? regarding the gravity example, just because you cannot feel gravity pushing down on you does it mean its not there ? so is the chair pushing up on you like acceleration/g-force, that would mean you are flying vertically up through space? and if gravity is not pushing down on you then what about falling, if you remove the chair and their is a 1000 feet drop underneath the chair ? now regarding the 2nd example of time, she said that there is no "global moment of now" or slices of time in GR, there is no way to connect/link time between two her birth-death "world-line" , but that does not mean that there is no time connection between two separate world-lines for example I have my world-line and I am experiencing time with everyone that is living on earth. or anywhere else. just because I don't meet/interact with someone 5 miles away that does not mean we are not experiencing the same time/weather/local-events.....
@albertjackson92365 жыл бұрын
Oppenheimer once told his brother, "I need physics more than friends".
@lameiraangelo6 жыл бұрын
This new theory of spacetime that she is investigating is revolutionary, if it can be proved... it will be an astronomical discovery.
@avidmisreader8 жыл бұрын
Really engaging. Though a bit weird that she continually refers to space-time granularity as being a worked on (but as yet untested, speculative) theory rather than a (very legitimate) hypothesis. Hope it's just confused terminology.
@reecelongden35008 жыл бұрын
+B.E. Henriksen (jiku) Yeah, because by definition, a theory is supported by evidence, whereas a hypothesis is untested and unsupported by evidence.
@michaellbbecker87345 жыл бұрын
Has the speed of gravitational attraction ever been measured? Does it propagate at the speed of light? What about gravitational waves - do they propagate at the speed of light?
@owaisahmad78412 жыл бұрын
Brilliant communicator and explained the concepts brilliantly. Just thought that meditation experience in that kind of detail was really not needed.
@ritemolawbks80122 жыл бұрын
"Close you eyes and think about the sensation on your bottom."
@LinuxLuddite5 жыл бұрын
between 17:15 and 17:25 there is too many 'tch' sounds, is that an audio anomaly or she was doing it ?
@tomb80784 жыл бұрын
I came here from a bbc podcast she was on where she kept smacking her lips like this - it was driving me crazy
@nachannachle27066 жыл бұрын
So, this lecture goes as this: Gravity is not a force => Gravity is similar to the EM field => Gravity is a "gravitational field" => Let's find out if Spacetime is granular. Seriously? How is this any different than looking for the Graviton or the Quantum Field of Gravity? Maybe I should start my own research group to find out if Spacetime is flaky...anyone cares to fund us?
@En-of5oh4 жыл бұрын
Time is real, it's not an illusion, unless we want to think other than that. Every event need time and space to take place, so we always notice the strong relation between time and space. We need to describe when and where an event took place or taking place or will take place, so the wonderful idea of the genius Albert Einstein to make from space and time one fabric called spacetime was an amazing idea, then phenomena like mass wrap to spacetime in form of gravity, and according to mass of an object how big or small that curvature become, all those phenomena and more happen according to GR of the genius Albert Einstein.
@santanukumaracharya34673 жыл бұрын
Really enchanting.
@douglaswilliams83365 жыл бұрын
The British.... personally I'd like to see more explanation by way of hard math. I understand it I just enjoy hearing different lecturers wax eloquent about their thingys along with a bit of understated British wit. Kai to the Uploader!! My deepest accord's
@cygil18 жыл бұрын
I've watched this twice now and I still don't get it. I think i'd have a better chance if she'd just break out the tensor calculus. All these bottom metaphors aren't helping.
@ghromm7 жыл бұрын
Light is the propagation of information about change at distant point of space. It cannot move faster than itself. Light is change of space.
@samirrimas7 жыл бұрын
Thee fact the universe is the bicth of lightspeed and has to bend and curl to keep it constant is a bunch of horse shit. Light has a constant speed because the universe requires it to do so not beacuse light likes to travel at a constant speed.
@collinbarker6 жыл бұрын
Albert Torres A black hole is black because light cannot get out of it. the escape velocity of a black hole is greater than that of light, therefore it is black. Falling in, nothing exceeds the speed of light, but nothing is ejected. those plumes that come off perpendicular to the accretion disk are stuff that missed the black hole but ewas shredded and flung from it at extreme speeds , but not at lightspeed
@josesaldivar6556 жыл бұрын
cygil1 you could ask if she has been out of school
@jimlaguardia81856 жыл бұрын
cygil1 Spacetime is a single thing, and it’s density varies. I.e., it is nonlinear.
@UmmCarl6 жыл бұрын
Time is the GUT. We measure everything as a measurement of time. Time is not linear, it's omni-directional.
@collinng6705 жыл бұрын
Moments are felt as continous experience due to our conciousness and memory, present when we are alive...when we died, we then understand atoms & such, keep appear & disappear in discontinous pixelated world (?)
@kenmarriott57725 жыл бұрын
Man is constantly seeking to understand how the universe works. After working out a mathematical model that works and explains a lot a paradox arises which causes us to develop the next model. Did you notice that you have to use gravity on the trampoline to understand the bowling ball explanation of gravity between objects? Can there be a better illustration of gravity?
@mnizam845 жыл бұрын
Beautiful lecture
@davidwilkie95515 жыл бұрын
Timespace positioning here-now synchronicity forever, "makes sense" because it's emulated in the projection of our (meditative) thinking.
@williambeck56785 жыл бұрын
The constant speed of light and gravity, it self, can be explained if one assumes that all matter is composed of tiny quantum fields(qf) that are flat discrete and flipping at a constant speed between 3 dimensions. Each (qf) is fixed in place at 3 coordinates and entangled with several adjacent (qf) in our dimension as with other separate (qf) in other matter in each separate dimension. Thus matter attracts mater. We can only see 1/3 of matter from our dimension, the rest being dark matter. Light waves cause each (qf) to vibrate and pass on the vibration only while in our dimension, thus limiting the speed in the same way it limits the ultimate temperature matter can be heated and the reason our universe has not burned up. As the fields flip there is a brief instant when it can not be seen by any of the 3 dimensions, Time would not exist at that short period seen from each of the 3 dimensions, whereas time would be linked being the same in all dimensions. Thus causing time distortion around black holes.
@fungiuse6 жыл бұрын
I really felt SPACETIME flying faster than speed of light at my BOTTOM during meditation exercise !! Thus, my bottom taught me a lesson!!
@VibratoIbanez8 жыл бұрын
I need a book on Tensor theory with exercises. Can anyone please suggest me the best pdf available online which is free ? (It must have exercises)
@williamwong15448 жыл бұрын
I am here because of the Discovery of the Gravity wave...>.
@josephmeredith74366 жыл бұрын
Yeah those gravity waves LOL what a crock.
@bobaldo23395 жыл бұрын
I am here because I cannot afford to live on the west coast.
@jagathmithya7196 жыл бұрын
I didn't know Kundalini awakening at the Mooladhara chakra is a way to disprove Newtonian gravity! Amazing! According to Eastern thought, space is not nothing; and it is from space that matter is projected. Maybe she can research these ideas and take forward her granular theory of spacetime!
@blowjob4285 жыл бұрын
So, it is not gravity that pushes my whiskey to my stomach, it is the curvature of my throat and stomach.
@jasonboyd7826 жыл бұрын
Something I don't get is if the moon's orbit around the Earth is caused by the curvature of spacetime caused by the mass of the Earth, and the moon is actually moving in a constant "straight line" through this curved space... ok, but why then does light, say starlight, pass through an actual straight line through the same region of space?
@fungiuse6 жыл бұрын
Mass and Spacetime have equality of gender: one bosses the other because mass always forces spacetime to curve and the curved spacetime makes mass to follow it wherever it wants to!!!.... i.e, Mass says: I shall curve you.... Spacetime says: but I shall make you follow me in my curves!!
@jeunjetta6 жыл бұрын
In my humble opinion.... No messy "birthing of space time atoms" is required (whatever that meant). All potential pathways have already been created and are continuously "groomed" by electromagnetic conciousness units that move faster than the speed of light. This creates the "grid" in crude terms, limiting probable outcomes whilst still allowing free choice. Our perception of time is based on our vantage point of our reality. If we can perceive our reality without the filtered manipulation applied by human brains, our experience of time could be vastly different. Apparently our species of conciousness chose to "forget" the larger details while we're playing on this earth playground in order to get the fullest experience out of free will and choice. Who knows. But I digress. The most important point is that (I believe) that particles such as photons (and these yet to be discovered conciousness units) travel the extents of the universe on every flash of time, slowing down some places, to take part in the coagulation of matter that we can, see. Even our own bodies flash in and out of existence in this way. Imagine a, swarm of beez coming together to make the shape of a, man, then flying off to collect honey etc, and flying back fast enough to reshape that form of the man before he notices that his body wasn't solid for a blink of time....
@waikikiman0076 жыл бұрын
Whar we precive as time is really a perception of change. We experience xhange not time.
@rommel23nb5 жыл бұрын
I very keenly listened to the lecture. Very good lecture. One question which I have been keen to know the answer of , never lucky so far, is this. Why is space-time wrapped near the massive objects? If it is not gravity, what is this that makes the lighter bodies to be trapped in pits of space-time created by massive objects? Why is not the space-time raised up causing to repel the other objects,instead of creating a pit and trap other masses? Dr. Dowker is requested to help. One more question that I have is related to your explanation of letting fall two different masses. You said, they start falling without gravity? What makes them move without force? Should we throw away Newton's second law of motion as well? Thanks. Once again well done with your theories and lecture.
@philoso3774 жыл бұрын
Contradiction between Newtonian and Special/General Relativity : because Newton study laws of nature and summarized it into three laws representing nature precisely - while Einstein study in his mind experiment to summarize it into laws can only represents his imagination but nature. Don’t just learn but think Don’t just think but thinking outside the box - imposed on us by academia.
@thedouglasw.lippchannel5546 Жыл бұрын
She is amazing.
@ArminGips4 жыл бұрын
whats up with the esoterics in the middle?
@gforce98545 жыл бұрын
OMG. So much to think about.
@MrFuchsiamagic6 жыл бұрын
If gravity does not pull us down into our chair but only pushes us up as Fay suggests, then why don't we fly up into the air?
@mkelkar16 жыл бұрын
"The inverse Lorentz transformation used in relativity is false, it does not define a division operation and using it produces incorrect results, which are called paradoxes, because they contradict common sense. There is a mathematically correct inverse Lorentz transform that can be derived by assuming a linear algebra with a multiplicative group structure in which a mathematical division operation is defined, and in this mathematical structure the traditional inverse Lorentz transformation is known as the adjoint or dual Lorentz transformation" Harry Ricker III Special Relativity Is Irksome www.naturalphilosophy.org/site/harryricker/2015/07/09/special-relativity-is-irksome/
@LeoMadrid5 жыл бұрын
All objects with mass, curve spacetime, not just massive ones.
@algonte6 жыл бұрын
Two balls of the same size, one made of wood and the other made of iron, released together, fall together and hit the ground at the same time, this appears natural if there is no gravitational force, BUT, which is then the cause that make them to accelerate?
@craigfordyce46452 жыл бұрын
'Spacetime' is not a physical reality. Matter attracts matter.
@whirledpeas3477 Жыл бұрын
Thanks. I have been saying that for half my life. Also, I am 6 years old
@realitycheck33635 жыл бұрын
Newton can not explain Mercury's observed orbit exactly. GR can. This is because gravity is not really a force. The Earth is not being "pulled" by the sun by some "force". The Earth follows a straight path through space. It's path however is "bent" by the sun, which causes its orbit.
@ftammaro1006 жыл бұрын
One of Einsteins quote if you can't explain it to a fourth grader you probably do not understand it yourself. this could apply to Einstein himself.
@gasdive8 жыл бұрын
Wouldn't it be nice if to celebrate the centenary of GR, we could finally stop teaching school kids that gravity is a Newtonian force?
@reecelongden35008 жыл бұрын
+gasdive Gravity kind of is and kind of isn't a Newtonian force. It isn't a Newtonian force applied by the objects on one another, but technically it IS a Newtonian force applied by both objects on the fabric of spacetime and (Newtons 3rd Law) equally and oppositely applied by the fabric of spacetime on both objects.
@gasdive8 жыл бұрын
Reece Longden And it's kind of angels pushing planets around on crystal spheres, except the direction of push is toward all other bodies in the universe in inverse proportion to the square of their distances multiplied by their masses. Enough of the convoluted and incorrect, why not just teach the best information we have and let the garbage die off as amusing but wrong. Why would we invent some new garbage that we know is also wrong in order to keep something we've known to be wrong for 100 years alive in spirit? Gravity isn't even slightly a newtonian force acting between objects and spacetime. That's complete twaddle. Objects are not acted on by any forces when they travel in a straight line. An orbit is a straight line. It just looks bent because you're viewing a 4D line in 3D. When you throw a ball it travels in a dead straight line from the moment it leaves your hand. Newton was wrong. Time to get over it.
@reecelongden35008 жыл бұрын
+gasdive Your argument is flawed, in that you attempt to use something for which there is no evidence to disprove something for which there is evidence. And gravity is exactly a Newtonian force acting between objects and spacetime, that is what causes the curvature of spacetime in the first place: the action of mass, upon it. The planets push on spacetime, which forms a complex curve and pushes back on the planets. Newton was wrong in that he believed that gravity is a force between two objects, rather than the net sum of several forces between the objects and the spacetime fabric upon which they rest.
@gasdive8 жыл бұрын
Reece Longden So what's the force carrying particle between 'spacetime' and 'planets'? Did you just make this up? There's no force between spacetime and mass, newtonian or otherwise that 'pushes back on planets'. Do you think that spacetime is a rubber sheet or something? This is what I mean about teaching newtonian physics. It results in this sort of thing. You get some sort of bizarre concept of what's going on and it becomes huge impediment to seeing what's actually happening.
@reecelongden35008 жыл бұрын
gasdive Just because we cannot or have not detected a force carrying particle does not mean it does not exist. Indeed, the postulated graviton may interact between the objects and the fabric of spacetime, making the graviton still a viable force carrying particle and also explaining why we cannot detect them. And perhaps it is your sense of reality that is warped by your desire to see gravity in a non-Newtonian way. I am not saying he was right about everything, but he was right about a damn lot of things, and the application of his principles still formulate an excellent model of the way gravity works, especially when applied in the way I explained above.
@jeffwells12554 жыл бұрын
What a strange way to demonstrate a physics concept - she and Sam Harris should have a sit-down together ;)
@ergbudster33337 жыл бұрын
I'm guessing this is the first time she's given this particular lecture. Unless the damn cameras are making her nervous. I imagine something like little tiny drones with super-resolution lenses on their tiny cameras. Unobtrusively recording and not messing up the speaker's attention span. Soon. For sure.