What is Gravity? | Wondrium Perspectives

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What goes up must come down, right? We’ve heard that old saying many times throughout our lives. But as it turns out, gravity isn’t quite so simple.
In this episode of Perspectives, four experts discuss what we know about gravity as well as some of the things we’re still trying to figure out.
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Clips in this video are from the following series on Wondrium:
Understanding the Misconceptions of Science, presented by Don Lincoln
www.wondrium.com/understandin...
The Higgs Boson and Beyond, presented by Sean Carroll
www.wondrium.com/the-higgs-bo...
What Einstein Got Wrong, presented by Dan Hooper
www.wondrium.com/what-einstei...
Great Heroes and Discoveries of Astronomy, presented by Emily Levesque
www.wondrium.com/great-heroes...
The Evidence for Modern Physics: How We Know What We Know, presented by Don Lincoln
www.wondrium.com/the-evidence...
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Table of Contents
00:00 Gravity before Newton
03:57 Newton’s Universal Law of Gravitation
07:49 Einstein’s General Theory of Relativity
12:44 Proof of Gravitational Waves
16:08 What Is Quantum Gravity?
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Wondrium Perspectives is hosted by Rich Bernett.
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[Three hashtags that apply to the video topic]

Пікірлер: 1 300
@ozgott1415
@ozgott1415 2 жыл бұрын
I understood the data on gravitational waves better than I understood the multiple unnecessary camera angles and shifts in this video.
@user-ud3fr9ni6e
@user-ud3fr9ni6e 4 ай бұрын
When ya bother too look up a dot in the sky,... ya see a STAR / PLANET ? Whadda ya see? A single point of LIGHT. That STAR / PLANET,...one single DOT,...is sending/ REFLECTING its LIGHT via A 360 DEGREE SPHERICAL TRANSMITION,...for ALL TO SEE! & It's just a DOT,....all can see,...just a single ***** dot of light!,....POINT OF -- view. Have you never watched / wittnesing a cloud DISAAPPEAR 'n' WONDERED? POINT of VIEW,...HUBBLE - JWST - YOUR OWN TELESOCPE? GET BINOCULARS----- "look up,.." amaze yer-SELF
@garyc1384
@garyc1384 3 ай бұрын
Almost as bad as that hair!!
@StarCarlton
@StarCarlton 2 ай бұрын
The camera angles are a direct correlation between space time divided by the longitudical vertex of said optical point squared infinitely by sub atomic dense particles orbiting a quantum realm.
@David-cv1se
@David-cv1se 2 ай бұрын
You don't understand anything you just nod your head up & down & say "Yes Daddy NASA...whatever you say Daddy NASA" 🤦‍♂️
@user-ud3fr9ni6e
@user-ud3fr9ni6e 2 ай бұрын
@@David-cv1se I UNDERSTAND,...THE SPEED of LIGHT is;...... [ significantly } greater than 186,000 miles per SECOND! I UNDERSTAND --a light year is LESS THAN 6,000,000,000,000 MILES. I am woke / INTELLIGENT / EDUCATED,...... A retired TOOL / MAKER / MACHNIST. I hope for YER EXTENDED FAMILY's sake that at the very best,....>YOU< are more than a MERE AMBULNCE chaser!
@robert100xx
@robert100xx Жыл бұрын
This gravity thing is really cool. Sitting on my sofa watching this I was able to leap around the studio so he had to keep turning to look at me. Quantum!
@eddiedelzer8823
@eddiedelzer8823 2 жыл бұрын
My dad taught me about gravity when I was 16. He woke me up I was sound sleep and said son, I have to teach you a thing or two about life. I go oh no here it comes, he said no you don't understand. 1. If you fall the ground will catch you. 2. Two gravity never sleeps. 3. Now for the most important part, you never see a dollar bill with his eyes closed so get your butt out of bed and go get a job gravity is up.
@scoremxcom
@scoremxcom 4 күн бұрын
The best thing you can do is 'sleep'.
@nicholasmccarthy8771
@nicholasmccarthy8771 Жыл бұрын
Thank you. Really well put together presentation. Much appreciated.
@davidmudry5622
@davidmudry5622 Жыл бұрын
If gravity is space-time rather than a force, does that mean everything above the ground can only fall if the support below any object that is above the ground, must FIRST be weakened or removed?
@TheodoreRizzo
@TheodoreRizzo Жыл бұрын
Up until recently I’ve become fascinated nerd and learn about the universe and all these educational videos are gold to me.
@no36963
@no36963 Жыл бұрын
Watch the Thunderbolts Project for science instead of standard Model religion.
@TheodoreRizzo
@TheodoreRizzo Жыл бұрын
@@no36963 no
@neildown7231
@neildown7231 Жыл бұрын
@@TheodoreRizzo Bent space clocks isn’t science
@rykehuss3435
@rykehuss3435 Жыл бұрын
If you want some actual explanations, watch Eugene Khutoryansky and PBS Space Time. This channel is just pop-sci for the masses. This guy even failed to consider time in the GR part of the video, completely failing since space and time are inseparable. He was just talking about the geometry of space. There's a 4th dimension, and its because of the time-dimension that gravitational "attraction" even exists. For example, the Moon orbits the Earth not because Earth curves space like a weight on a sheet, but because gravitational time dilation. Time literally runs slower for the parts closer to Earth, and faster for those further from Earth. This causes gravitational attraction.
@neildown7231
@neildown7231 Жыл бұрын
@@rykehuss3435 Nope. Gravity is just a molecular force. It’s not bent shapes😏
@Yeti_Boop
@Yeti_Boop Жыл бұрын
This video is fascinating. How do you get so many different camera angles packed into one video? The scientist talks for about 7 seconds, turns, looks at a new camera, talks for 7 seconds, turns, looks at yet another camera, talks.. and so on over and over and over lol
@TheGreatCourses
@TheGreatCourses Жыл бұрын
A great studio setup, a clever camera crew and a director that can multitask!
@1pcfred
@1pcfred Жыл бұрын
They're using bullet time. Just not very well.
@alexandrekassiantchouk1632
@alexandrekassiantchouk1632 Жыл бұрын
Curving 4-dimensional model is not gravity. Physical answer is in "Time Matters eBook" pages 76-79: gravity is push force, from quantum fluctuations. Or to be more precise: difference in pushes, due to time difference, aka due to time dilation.
@thomasmyers9128
@thomasmyers9128 5 ай бұрын
It keeps from cutting and trying to line up start overs……. Little short 7 second videos to splice together
@vhawk1951kl
@vhawk1951kl 3 ай бұрын
What makes you suoppose he is a whatever-you-mean-by-but-have-no-idea " scientist"? Iwonder if those that use the word "quantum" as if it were a magician's wand know that it is the latin word for how_much; Whate next "Qnantuum butter-and-bread?- *Quantum* the vague -intimation-hhat-one-has-forgotten- something? *quantum* boredom *qunantum* being-as-credulous-as-an-imbecile-child? *Quantum* *quantim*? The high priests of the religion modernism-scientism know very well that they can trigger the weakness credulousnes in their fellow creatures and make the believe any-old-thing, if they preface whatever- it- is withe magic words " scientists -say", and sure enough: Baa baa baa they wil go if "scientists-say", it sinmply *must* be so, and could not possibly be otherwise. If course it never crosses their ovine minds that not everyone that claims to be " as scientisr" actually*Is* a scientist or if nor *Knows* anyhing-at - all. It suffices that you merely *say* you are "a scientist" and, sure enough, they will say " oh if you are "a scientist" whatever you say simple *must* be the case and cannot possibly be otherwise. Even beter if you wave your magic wand " Quantum*- that alone wil suffice. Tell them that " quantum" is merely, no more and no les that the Latin word for how much and it wil not make the slightest difference because " quantum is a *Mgic* word like 'scientist which simply means anyone-that-*Knows*. The fact that many soi-diant" scientiats " *Know* nothing-at-all, is neither here nor there.
@FrankKoslowski
@FrankKoslowski 5 ай бұрын
I liked the way you wandered off the topic at the point when talking about a Universal field. Kind of like Goldfish sticking their heads out of the water to have a look around, and promptly fall back into the known darkness of the pond again. 😅
@mrgoat7847
@mrgoat7847 7 ай бұрын
Brilliant minds that can't figure out which camera to look at lol
@DirtyMikeACTUAL13
@DirtyMikeACTUAL13 5 ай бұрын
Every one is asking “what is gravity?” But no one is asking “HOW is gravity?”
@SirFency
@SirFency 2 жыл бұрын
if a gravitational wave is so difficult to detect on a planet the size of the earth its no wonder that we cannot see the effects on the molecular level.
@Gausinha
@Gausinha 3 ай бұрын
your ability to connect with your audience is phenomenal!
@JanPBtest
@JanPBtest 2 жыл бұрын
8:27 Strictly speaking Einstein says that the energy-momentum and spacetime curvature are _correlated_ in a certain strict way, it does not say that one _causes_ the other.
@dantemalay4528
@dantemalay4528 Жыл бұрын
Can't create either but both forced to react to each other when in a close vicinity
@desertshadow6098
@desertshadow6098 2 жыл бұрын
Terrific video showcasing the chronology of major physic ideologies. Quantum’s gravitational impact intriguing.
@nHans
@nHans 2 жыл бұрын
A week after this video was uploaded, it has 334 comments. I read through all of them, and they're-boy oh boy-not at all what I expected for a science video! Now I'm seriously worried for the future of science. 😱
@johnlonkert7187
@johnlonkert7187 Жыл бұрын
Or the future of humanity.
@torrokasparov2210
@torrokasparov2210 Жыл бұрын
Keep at it guys, and never give up !!
@2quick4u84
@2quick4u84 9 ай бұрын
Hi , i want to ask why the fabric/matrix of space-time is always drawn as a net of squares or sometimes triangles (half squares)? does is it have a real physical meaning? thanks
@nicholasmarino1733
@nicholasmarino1733 2 жыл бұрын
Hi, as a retired science teacher, I say this presentation is outstanding. Excellent!!!!!!!
@gowdsake7103
@gowdsake7103 2 жыл бұрын
I found the constant changing of camera angles extremely annoying
@PrimeMinisterAbhilashKalkiG
@PrimeMinisterAbhilashKalkiG 2 жыл бұрын
Okay 👍
@im1who84u
@im1who84u 2 жыл бұрын
@@gowdsake7103 9:30 Not to mention, this guy changed his pants right it middle of teaching us?
@vinkeith
@vinkeith 2 жыл бұрын
Manipulation of gravity will usher in either the demise of humans or secure the propagation and legacy of our species for a millennia.
@vinkeith
@vinkeith 2 жыл бұрын
@robert punu read a book please
@Sarnt_T
@Sarnt_T Жыл бұрын
The fact that it's 2023 and gravity is still just theoretical is mind-blowing. I'm by no means the smartest person, but that is wild.
@davidmudry5622
@davidmudry5622 Жыл бұрын
If gravity is space-time rather than a force, does that mean everything above the ground can only fall if the support below any object that is above the ground, must FIRST be weakened or removed?
@johncronin7875
@johncronin7875 7 ай бұрын
It is both a theory and a law. The law of gravity calculates the amount of attraction while the theory describes why objects attract each other in the first place
@timothylongmore7325
@timothylongmore7325 6 ай бұрын
Same here. I still think it sounds like bs.
@genome616
@genome616 4 ай бұрын
Gravity is a measured effect, it is not theoretical, we can measure it and predict it and calculate it, what is theoretical is what causes that measured effect we know as gravity.
@JohnRoach-jn4dg
@JohnRoach-jn4dg 2 ай бұрын
Emergent Inertial Gravity/ACCELEROMETER PHYSICS GRAVITY was introduced by James Carter in the year of 1971. He is alive and well and can be found on the Internet.
@nancymencke503
@nancymencke503 2 жыл бұрын
So glad to find you thank you so much
@jaeyang9540
@jaeyang9540 Жыл бұрын
I remember that event. Examined 1/4 second for like 6 months and forced me to redo my entire perspective of Time Dilation perception and how we could record it and quantify it. Found out or deduced my entire theory was upside down and backwards. Relativity perception of Time dilation. I went through countless scenarios of what would happen if 2 blackholes merged. The type of energy spike I would get, my Time perception was flawed. I thought Time would slow down, however, my perception of it sped up. 2 black holes gave me a quarter second energy chirp. I was like, where’s the rest of it. Expecting a big package, got something I could barely record with LIGO. I figured LIGOs equipment not sensitive enough to pick through all the nuances in that energy burst, since everything is being argued as Theoretical until proven. For all you CERN physicists. I usually make my discoveries accidentally, usually looking for something else, then my data or predictions are not accurate then going back and reviewing data and calibration and instruments used. Trying to figure out what went wrong then finding something new. Most of my discoveries found looking for something else lol
@atticuswalker8970
@atticuswalker8970 9 ай бұрын
could you help me find a reason to dismiss a idea to unify gravity. an observable truth that dosent fit.
@vhawk1951kl
@vhawk1951kl 3 ай бұрын
What makes you suppose there*are* any black holes- Just naturally credulous? If the idea of black holes were fully baked it would be obvious why there are *none*. It is clear to me that religion comes from the natural(whatever that means) passivity of mem(human beings/dreaming machines) ; they would not be so credulous were they not so passive and programmed or conditioned to be pasive by their maleficent invention that they call education. Moreover they are clearly not in the lest bit concerned by their pasivity. The true horror of the passivity is revealed by the fact that they*really_do* suppose there to be a democracy of truth known as the fallacy arumentim ad populum for with thre is a opithy saying from the1970's; there are seemingly ovine or grgious by nature. Hrdly ver o they question what they are * told*..... they are *that* passive- after eall it is so much easier to believe, which they do pasively mechanically(means choicelessly) automatically because that is how they are wound up or as-is-said educated.
@DavidMcMahon100
@DavidMcMahon100 2 жыл бұрын
Well done summary of the history of gravity and the current paradigm.
@waterproof4403
@waterproof4403 2 жыл бұрын
No one still knows what causes gravity :)
@velimirstanimirovic4904
@velimirstanimirovic4904 2 жыл бұрын
Notice all guesswork there!
@im1who84u
@im1who84u 2 жыл бұрын
9:30 I got confused when this guy change his pants right in the middle teaching us?
@timothylongmore7325
@timothylongmore7325 6 ай бұрын
Yeah , the old bowling ball on the trampoline warping spacetime just doesn't sell it for me.
@johnwythe1409
@johnwythe1409 2 жыл бұрын
Can you explain how a proton and and electron attract each other? If there is an exchange of a photon between the two electrons, doesn’t that mean there is also an exchange of energy?
@trout3685
@trout3685 2 жыл бұрын
Something tells me you shouldn't even worry about this question until you gain a lot more knowledge on the subject. Any good answer you receive you won't even understand anyway right? Otherwise you could just research it yourself rather than asking random youtubers.
@SnakeAndTurtleQigong
@SnakeAndTurtleQigong 2 жыл бұрын
Sending gratitude from a Daoist monastery near Seattle (US)! 🌲☯️👍🏻
@miraicnbs7323
@miraicnbs7323 Жыл бұрын
Thanks. It is so informative.
@meltedmarshdaddy
@meltedmarshdaddy 2 жыл бұрын
YES! I've been recently looking for a new Wondrium Video on gravity! This is perfect. Can't wait to watch tonight 😀
@velikovskysghost
@velikovskysghost 2 жыл бұрын
@Marsh If you really are looking for a good video on gravity see (The Long Path to Understanding Gravity) by Wal Thornhill, excellent with plenty of references. Science that makes senses!
@meltedmarshdaddy
@meltedmarshdaddy 2 жыл бұрын
@@velikovskysghost thank you kind sir, you're a real one. I'm fixing to watch it tonight.
@velikovskysghost
@velikovskysghost 2 жыл бұрын
@@meltedmarshdaddy You're very welcome and I do hope you enjoy it. Wal is one of the most integral people I've even met.
@laxminarayanbhandari855
@laxminarayanbhandari855 2 жыл бұрын
@@meltedmarshdaddy keep yourself safe from pseudoscientific conmen.
@laxminarayanbhandari855
@laxminarayanbhandari855 2 жыл бұрын
@@velikovskysghost"Science which makes senses." More like pseudoscience which keeps contradicting itself.
@nickcalmes8987
@nickcalmes8987 2 жыл бұрын
It's so crazy how close LePlace was to actually explaining general relativity. Insane how close he was.
@HB-mn8lh
@HB-mn8lh 2 жыл бұрын
Einstein was awarded honorary grants.
@larscp
@larscp 2 жыл бұрын
Yes, Einstein must have gotten his ideas from him
@urosgrandovec3409
@urosgrandovec3409 2 жыл бұрын
Actually there are some big philosophical leaps between them. Having some function in space (the codomain is just R) is a very different point of view than saying that space itself (the metric) is curved.
@onlythewise1
@onlythewise1 2 жыл бұрын
@@larscp nope he got them from inventions he read he worked for a patent office
@henrick589
@henrick589 2 жыл бұрын
@@onlythewise1 proof please
@Spitfireseven
@Spitfireseven 2 жыл бұрын
This was great.
@trevorpsy
@trevorpsy 2 жыл бұрын
Excellent! Thanks.
@z.C.008
@z.C.008 2 жыл бұрын
Very clearly articulated so much so that it becomes easier to imagine what they state. Thanks for the awesome explanation. ❤
@davidmudry5622
@davidmudry5622 2 жыл бұрын
The top of this demolished building, using the French method where no explosives are used, falls completely off. But on WTC2 (the South Tower) the top starts to fall off, but then the rug is pulled out from under its feet and the top descends without falling completely off. kzfaq.info/get/bejne/l7qGi6tqybDOmIk.html kzfaq.info/get/bejne/rbiWo8t0sdq5hX0.html
@neildown7231
@neildown7231 Жыл бұрын
Don’t be ridiculous. Gravity is not imaginary lines
@davidmudry5622
@davidmudry5622 Жыл бұрын
@@neildown7231 But the twin towers accelerated to the ground, and that means while falling the towers had less weight force down than before they collapsed? Rocket man had zero weight while accelerating to the floor, so then any rate of acceleration should mean less weight until you hit the ground which is the rocket's floor? NIST WTC FAQ 31 says the towers fell in free fall. kzfaq.info/get/bejne/jriiZM6SvbGmo4k.html
@neildown7231
@neildown7231 Жыл бұрын
@robert punu GR is easily one of the dumbest ideas ever proposed. It blows my mind that people accept it
@neildown7231
@neildown7231 Жыл бұрын
@robert punu General Relativity
@penguinista
@penguinista 2 жыл бұрын
Very well done. Thank you!
@martinhirsch94
@martinhirsch94 Жыл бұрын
We might be getting better at measuring the effects of gravity but not so much when it comes to figuring out where gravity itself comes from, or what it actually is. I might have an idea on that issue but I need to figure out an experiment or two to help explain it. Time to connect the dots, so to speak.
@alex79suited
@alex79suited Жыл бұрын
Get a fish tank, get a round bobber. Now put the bobber in the center of the tank. Now the bobber is the blacksphere in the center of our galaxy. Now the water is space the top of the water is now the electromagnetic field plained out. So if you can keep the bobber spinning you would see the equator of the sphere has no effect it spins freely but if you add the electromagnetic field to the equator the area around the bobber would start to move the area around it. Put dye in the water to see effects. Have fun.
@dimension2788
@dimension2788 2 жыл бұрын
Nice job!
@saadabbas8976
@saadabbas8976 2 жыл бұрын
Post-Newtonian Gravitational and Scalar Waves in Scalar-Gauss-Bonnet Gravity By Banafsheh Shiralilou, Tanja Hinderer, Samaya Nissanke, Néstor Ortiz, Helvi Witek
@josephnarvaez9507
@josephnarvaez9507 2 жыл бұрын
@@JamesHawkeKZfaq How?
@saadabbas8976
@saadabbas8976 2 жыл бұрын
“Unlike general relativity, the canonical momenta of ESGB theories are nonlinear in the extrinsic curvature. This has two main implications: (i) the ADM Hamiltonian is generically multivalued, and the associated Hamiltonian evolution is not predictable; (ii) the “d+1” equations of motion are quasilinear, and they may break down in strongly curved, highly dynamical regimes. “
@kylelochlann5053
@kylelochlann5053 2 жыл бұрын
So let's say we have a field U^a and another field, V^a, and for simplicity let's say they're the same U^a=V^a, how would you show that U_a=V_a?
@gorojo1
@gorojo1 2 жыл бұрын
Wow! What a great video, with cast of the greatest explainers.
@Fuji-Kengamine
@Fuji-Kengamine 8 ай бұрын
Thank you for the wonderful video. Explain gravity, On this earth quantum strings are state of entanglement, this is a state where everyday gravity is at work. When this state is released becomes superconducting, this is a natural status free from gravity. The key point is the entanglement of quantum strings,there are double helix structures.
@mikewalker7385
@mikewalker7385 2 жыл бұрын
I visualize gravity as the expansion of space-time. The universe expands into time slower around an object that has mass.
@Mindcroscope
@Mindcroscope 2 жыл бұрын
We need something that can explain UFO's antigravity maneuvers. 👽🛀
@mikewalker7385
@mikewalker7385 2 жыл бұрын
@@Mindcroscope Maybe with a better understanding of quantum field Theory we will be able to artificially manipulate the expansion of space-time around a chosen object. If you could slow down the expansion of space in front of you the same way a gravitational field does, you would fall in that direction. It would not be the sudden movement you see UFOs do.
@anthony212459
@anthony212459 2 жыл бұрын
I see it as a distortion of space-time. With the highest concentration of distortion closer to the cause of said distortion and dissipating outwards.
@robert_costello
@robert_costello 2 жыл бұрын
“Those who are not shocked when they first come across quantum theory cannot possibly have understood it.” Moreover, “the mere act of indirectly observing the atomic realm changes the outcome of quantum interactions.” -Niels Bohr I can’t help but wonder if consciousness is an underlying factor.
@mikkel715
@mikkel715 2 жыл бұрын
Key point of the mind boggling Quantum Mechanics. As only information of particles make them behaved according to that, since last known event.
@Drewteam88
@Drewteam88 2 жыл бұрын
NO!
@robert_costello
@robert_costello 2 жыл бұрын
@@Drewteam88 Your answer doesn’t leave much room for negotiation, in a world of complete and total “uncertainty“.
@rw2452
@rw2452 2 жыл бұрын
@@robert_costello Consciousness is the soul, ie. the software computed into the brain(hard drive). All information goes out with the soul when the flesh body dies. In effect, yes I would say quantum mechanics is part of it, but so is everything else.
@NoActuallyGo-KCUF-Yourself
@NoActuallyGo-KCUF-Yourself 2 жыл бұрын
It's not.
@michelelane4662
@michelelane4662 2 жыл бұрын
Interesting. What about the positive/negative ions? Just curious to see if there’s some kind of connection.
@davidcopson5800
@davidcopson5800 2 жыл бұрын
This video really pulled me in.
@bertoid
@bertoid 2 жыл бұрын
The thing that has always bugged me about forces on particles being explained by the exchange of force carriers, is that I have never seen an explanation of how the interacting particles know of each others presence, so that the force carrier can be sent (and where to send it).
@darkgreenambulance
@darkgreenambulance 2 жыл бұрын
I think they must have tiny mobiles.
@1SpudderR
@1SpudderR 2 жыл бұрын
Yep! Like it.....It Always amazes me that we accept the Invisible Force between magnets, and gravity! This Space Of powerful Nothings! And now we are becoming aware of “Nothing” being full of everything!? The majority of scientists seem stuck in an educational rut and will not reinvent what is old fashioned! “The field is everywhere! And this is Gravity?” Einstein Two.....required!
@Erythang808
@Erythang808 2 жыл бұрын
This is just my opinion from what I've gleamed. Everything vibrates, everything in this realm. Gravity can't vibrate unless it is a molecule. Probably, a quantum one, and is carried along by tachyons, neutrinos, protons, etc. I believe that as mass, which is compressed light, carries gravity in every particle on a subatomic quantum level (we aren't able to observe at this present time) the gravity particle is already present and working in conjunction with the electron particles. As the electromagnetic waves from two masses come into contact with eachother, the gravity and electron particles form convergence waves. In this union of forces, the information is traded as particles collide. I hope I explain the process enough for you to visualize the function. If you have a question ask away! Blessing!
@ozymandiasnullifidian5590
@ozymandiasnullifidian5590 2 жыл бұрын
@@Erythang808 mass is compressed light??? Man, you are far from real physics... You can't compress light, light is made of photons, and for photons, the Pauli exclusion principle is not working, it has to do with something called spin...
@nmarbletoe8210
@nmarbletoe8210 2 жыл бұрын
the force carriers go out in all directions but unless they meat up with another object they jus fizzle out
@Freddy18w
@Freddy18w 2 жыл бұрын
Sweet....so well orated & informative this should win a prize. I give it a GOLDEN DRAGON.
@the_eternal_student
@the_eternal_student 2 ай бұрын
I like the thumbnail. I enjoy seeing waves in a medium.
@rodneyrenfro5375
@rodneyrenfro5375 2 жыл бұрын
if the field of two south pole magnets being pushed together, and force is passed by electro magnetic photons. can they be detected? what wavelength and if i hold them close, quite a bit of mass to energy or at least a release of some of those photons
@kylelochlann5053
@kylelochlann5053 2 жыл бұрын
No, photons do not communicate the EM force, which is ascribed to virtual photons, but these are mathematical abstractions that show up in the perturbative description.
@whirledpeas3477
@whirledpeas3477 2 жыл бұрын
Don, Sean and Dan all in one video, Perfect.
@PrimeMinisterAbhilashKalkiG
@PrimeMinisterAbhilashKalkiG 2 жыл бұрын
That's Right All In One😀
@TomTom-rh5gk
@TomTom-rh5gk 2 жыл бұрын
Gravity:avity: Imagine a sheet called space moving through a 4th dimension where the 4th dimension was called time. The fabric’s direction of travel is from a place we call the past to a place we call the future. The surface of the sheet is what we will call the present. This 4th dimension is not the same as our ordinary experience of time but is related to it. If you put a lead ball on the moving fabric the ball would resist the movement so as to cause the fabric to deform. The ball and the fabric pushing the ball would lag behind the rest of the fabric. According to our definitions, the ball could be said to be in the past. If another ball were put on the fabric it would deform the fabric too. If the two balls were close together they would approach. The balls would seem to be attracted to one another but in reality, they would be both moving toward the same place.
@velikovskysghost
@velikovskysghost 2 жыл бұрын
@@MrWhodatsay That was delightful to be sure, and I'd say 1,000,000,000 times more interesting than this talk!
@HB-mn8lh
@HB-mn8lh 2 жыл бұрын
It looks correct, but within our exclusive perspective, we can't find an inclusive solution to the infinite system of nature. Mathematics is the code version of a description. It can't give you conclusive result from an exclusive description.
@TomTom-rh5gk
@TomTom-rh5gk 2 жыл бұрын
@@HB-mn8lh Thank you for the feedback. The physicist was Edward Harrison from University of Massachusetts. The book was called Cosmology 1st addition. I can't find it. I makes every thing clear. Time is change in the 3 space dimensions. There is no river of time and no time travel. But time is still the 4th dimension because the 3 space dimensions move through it. The math has to work and I have no idea about math. Please make it work if you can. Or show it to someone who can make the math work. Again thank you for reading. I have been trying to get someone to look at this for years.
@TomTom-rh5gk
@TomTom-rh5gk 2 жыл бұрын
@@MrWhodatsay Time is change but we have to account for the false ideas. Memories make people think that the past still exists. Thinking about future makes us think time travel of possible.
@TomTom-rh5gk
@TomTom-rh5gk 2 жыл бұрын
@@MrWhodatsay What are you talking about. I am talking about gravity. inertia. change. and time. Colors are about light.
@eensio
@eensio 8 ай бұрын
The spring illustrates very well the complexity of waves. The gravity needs mass, but not necessary matter to be produced. In the beginnig time started, because space ”needed” time. And at the same time gravity started, because mass ”needed” gravity. The matter came later.
@anurabodiyabadu
@anurabodiyabadu 2 жыл бұрын
Excellent, Excellant
@urielstud
@urielstud 2 жыл бұрын
I thought this is very cool how you ended up with a prospective theory of Quantum-Gravity 😃 and also how very much more effective your new semi-closeup, and off camera filming technique is. It helps to get away from what my UCSC professors called “hand waiving” arguments. (The way to do those, as Dr. Hooper sometimes does, is to use gestures in the Left hand together with the left side of the head being slightly raised-an emotional or Feeling approach as opposed to the standard “male” left-brain/right sided dominant one. Remember, we’re just students here.) But the new filming technique is really superb, and quite attractive! I think it helps to deal with attention spans if you are going over the standard 20 minute recommended length in denser material like this. Dr. Carroll would look excellent with it; so thanks and Cheers! 🙏🏻
@TheGreatCourses
@TheGreatCourses 2 жыл бұрын
Thank you so much for your feedback! We truly pride ourselves on our professors and the depth of our content and are very glad you're enjoying our offerings. Thanks for being a fan!
@helensteely6890
@helensteely6890 2 жыл бұрын
Left and right brained idea has changed, We use both sides together. Hey, I am 74 and have read this upgraded idea so please realize as some guy named Asimov said, nothing so permanent as change.
@mustafayilmaz2259
@mustafayilmaz2259 2 жыл бұрын
Çok etkileyici bir yazı olmuş Griclcl ..... Dokuz şiddetinde deprem gibi... Bilimsel...edebi..epik..... romantik..tirajik..komik..yani yazının içinde ne ararsan var.. Yüz puan aldiniz
@mustafayilmaz2259
@mustafayilmaz2259 2 жыл бұрын
@@helensteely6890 beynin sagi solu yok......böyle mi dediniz. Sağ sol yoksa....güney kuzey de yok demektir....hiç bir şey yok demektir.... Ama ben varım...bakın bu yazıları yaziyorum.
@uneducatedguess6740
@uneducatedguess6740 2 жыл бұрын
The simplest approach read in Bob Lazar Cutting Edge: gravity = gradient in time dilation - not only gives straight solution to Vera Rubin and Hubble puzzles, but explains UFO stories and debunks dark matter.
@President_NotSure
@President_NotSure 2 жыл бұрын
i blame gravity for my laziness
@steviereedeker3314
@steviereedeker3314 8 ай бұрын
And for my downfall
@TheGrimReaper1
@TheGrimReaper1 8 ай бұрын
I blame atmospheric pressure, all that weight pressing down on me all the time.
@roddneyfett444
@roddneyfett444 5 ай бұрын
I am still trying to sort out the difference between a Field and a Force. It appears that a Force is the interaction of mass/energy and, a changing velocity vector/differential Field (F=ma). The equivalence principal of being inside an elevator and feeling a force. So how do we get rest mass? A knot in space-time like the 1/2 angular momentum spin of a fermion? How many angular momentum spins are possible, three? Perhaps the exchange of force particle is the quantized differential Field. Is the differential sum of virtual particles = to the differential Gravitational Field? How could we measure the rate of virtual particles at different distances from an object?
@johnholme783
@johnholme783 3 ай бұрын
It reminds me of a sound wave. Has the sound wave travels the air gets stretched and compressed. Having said that, the space-time medium is a little more esoteric!
@vinceypma8962
@vinceypma8962 2 жыл бұрын
Sean Carroll is one of my heroes.
@desertshadow6098
@desertshadow6098 2 жыл бұрын
A brilliant communicator of the complex
@redneckshaman3099
@redneckshaman3099 2 жыл бұрын
I'm addicted to pigger nussy 🤠
@ViggoHinrichsen
@ViggoHinrichsen 2 жыл бұрын
Don't forget Dan Lincoln from Fermilab. He is brilliant as well :)
@Meineself
@Meineself 2 жыл бұрын
Long Don is a fav of mine cept for his atheism.
@benmcreynolds8581
@benmcreynolds8581 2 жыл бұрын
I'm curious if instead of dark matter, could it be extra layers to gravity? So we could just improve off of the gravity we already know that works to an extent already? Like there could be the layer we know, then a large scale layer that's on the scale of entire galaxies and nebula's and other complex and diverse grand massive objects that have all sorts of behaviors interacting with in each other that I'm sure needs to be factored in to get this layer of grand scale gravity correctly. Then there could be sub atomic gravity or micro gravity or atomic gravity layer. That can essentially be the strong force and the weak force but it's just a different version of gravity on the smallest scale. So right now I'm just theorizing 3 layers of gravity, as an improved concept of the nature of gravity withing the natural world. The smaller layer, the normal layer we have understood very well that relates to our solar system type scale. Then there is the 3rd layer, the massive layer. Dealing with things that are light years across, vast temperature differences, density's, velocity's and diversity. Intense pressures, electro static charges, electromagnetism, plasma clouds, black holes, pulsar, quasars, neutron star's, super Nova explosions, gas clouds, solar winds, radiation, tons of interwoven orbital interactions and angular momentum velocities, multiple galaxies interacting upon other galaxies. Just so many things that probably all have to be accounted for when we are dealing with scales with such vast massive intracity, and scales as vast layers of complexity that the 3rd layer of gravity hypothetically could be covering? This is just a gut feeling, and I'm just doing a thought experiment with and I'd love it if someone else wants to improve onto it. I'm all for that.
@nihlify
@nihlify 2 жыл бұрын
It's one possibly but have lots of constraints given by observations
@quantumtacos
@quantumtacos 2 жыл бұрын
This is not a crazy idea and even many respected scientists think about it too. The general term for this is "modified gravity theory" and you'll find many papers and even some youtube videos about it. Happy thought experimenting!
@sundareshvenugopal6575
@sundareshvenugopal6575 2 ай бұрын
Love your videos. Life should be an adventure. What has sin and redemption got to do with any of this ?
@tomlakosh1833
@tomlakosh1833 Жыл бұрын
Here’s an amateur TOE based upon a quantum gravity particle. The force carrying particle of the Big Bang also had to combine to form matter as it cooled because there was nothing else to combine into structure. My choice is Planck length photons which are composed of 4 brane and 3 brane strings, (the source of entanglement), interlaced on the surface of a prolate spheroid that has protruding positive and negative poles. These poles are functional worm drive gears that allow the photons to form daisychain into chiral loops that can form straight shafts and one to three aspect ratio tori. These shafts and tori combine to form ambipolar solenoids, (aka gluons), that have counter-rotating shafts, which amplify the ambient electromagnetic fields to produce a much more powerful local field. The gluons can then fuse to form ring shapes that combine to form the charged fields constituting the shells of leptons and baryons. The gluons can condense in galactic EMF via Feshbach resonance to be dispersed as dark matter back upon the galaxy to generate BTFR. The gluons generate gravitational thrust by penetrating the spherical leptons and baryon and accelerating as a superfluid waveform in the subwavelength cavity to generate vectored thrust as exhaust from the South pole of the particle that polar orients toward the dominant gluon flux. The exhaust is vectored by the external quantum fluid formed by gluons on the surface that were at an acute angle or were too slow to penetrate into the spherical particle. This surface fluid also forms a dual membrane slipstream at the equator where the fluid from both hemispheres collide to form something like a disc MHD generator field. That field interacts with the gluon flux to stifle acceleration as space-time viscosity by absorbing the momentum of the flux thus generating an opposing thrust to gravity in the wide field. This slowing of the gluon flux via the viscosity mechanism eventually renders the flux to slow to penetrate the spherical particles and instead enhances the viscosity field to manifest dark energy where the gluon flux crossing megaparsecs is repulsive but the fast local gravity still works. This is why the galaxies in high Z superclusters act like windsocks in the laminar flow of the slow gluons, with all disks in the same plane and with their long axes all parallel to the direction of red shift propagation. Indeed, the Hubble constant is just a measure of the average percentage of gluon slowed to a repulsive velocity over a megaparsec. Just guessing. BTW, black holes are likely solitons surrounded by Fermi slush, (a Fermi solid mixed with quantum fluid generated by friction caused by incoming particles). The exterior skin presents a subwavelength cavity forcing all incoming particle into a waveform that maintains a superfluid state confined by the other waveforms.
@Briantreeu123
@Briantreeu123 2 жыл бұрын
How blessed are we to have so many great physicists im one video.
@maggs131
@maggs131 9 ай бұрын
The siver fox in the grey shirt looks like he wants to kill me every time he stops speaking 🫢
@billybobhouse9559
@billybobhouse9559 2 жыл бұрын
This was great. Really enjoyed it. However, the constant camera switches are distracting.
@johnwythe1409
@johnwythe1409 12 сағат бұрын
No one on this thread has even attempted to explain how a positive charge and a negative charge attract each other. How does the exchange of a photon create attraction instead of repulsion? Perhaps the momentum change due to the exchange of a photon, is an over simplification of what is going on, similar to gravity being represented by a big ball, on an elastic sheet.
@innertubez
@innertubez 2 жыл бұрын
Holy cow I never knew about Laplace’s theory of gravity. He conceptually was extremely close to the General Theory of Relativity - about a century earlier!
@kylelochlann5053
@kylelochlann5053 2 жыл бұрын
No, there is no relationship whatsoever between the work of Laplace and GR.
@paulklee5790
@paulklee5790 2 жыл бұрын
@@kylelochlann5053 Why not..? Seems to me he was on the right path....
@kylelochlann5053
@kylelochlann5053 2 жыл бұрын
@@paulklee5790 For clarity we'll call the Laplace object a Dark Object (DO) and the GR object a black hole (BH). 1. The D.O. has a surface, the BH does not. 2. The D.O.has a physical radius r=2GM/c^2. A Schwarzschild BH event horizon has a Schwarzschild radius of r=2GM/c^2, but BH radial coordinates are not physical distances and a BH does not have a unique radius of any kind (it's observer dependent). 3. Laplace's D.O.has an escape velocity, a BH does not. Light and objects can be launched into space from below its surface. The escape velocity equal to light simply means that objects slower than this come back down and light is emitted into space but is redshifted to infinity at infinity. The BH interior spacetime is a causally disconnect region of spacetime, meaning, there are no causal curves that can extend into the exterior spacetime. 4. A D.O. is a dense ball of matter, a black hole is a vacuum spacetime (T_{ab}=0} and so is just empty space. 5. A BH has a singularity, a D.O.does not. 6. The interiors of each are basically opposites, e.g. the tidal forces in a D.O. go to zero at the center, a BH has no meaningful center, but the tidal force go to infinity as the radial coordinate decreases, etc. Then there is the absence of relativistic effects for a D.O. and entire conceptual frameworks of what gravity is, is completely different. A D.O. and BH are almost perfectly unrelated, if not opposites.
@paulklee5790
@paulklee5790 2 жыл бұрын
@@kylelochlann5053 thanks for your fulsome reply but what ‘on Earth’ is a Laplace Dark Object? I was thinking that Laplace’s ideas about fields removing the problem of ‘action at a distance’ might have lead him to consider whys in which the field might be distorted and how that was analogous to a gravity ‘force’... to a layman it doesn’t seem that far a jump.
@kylelochlann5053
@kylelochlann5053 2 жыл бұрын
@@paulklee5790 Oh! I must have zoned out during that part of Carroll's talk on the first play through. Laplace, along with John Michell, are well-known for having proposed a planet/star so dense that it had an escape velocity equal to the speed of light to which some people with no understanding of relativity claim is the reference to a black hole. Carroll is referring to Laplace's theory of gravity where gravity is a fluid flowing into every massive object and in Laplace's own words "we must suppose that the gravitating fluid has a velocity, in Laplace's own words "we suppose that the gravitating fluid must have a velocity of least hundreds of millions of times greater than light." Anyway, there is no resemblance to GR even if Laplace's idea bears a vague resemblance to Gullstrand-Painleve coordinates. Laplace's gravity is a decidedly non-metric theory of gravity (GR is the simplest case metric theory) where in GR gravitational effects are the result of nothing happening - it is just inertial motion in spacetime.
@skyhorseprice6591
@skyhorseprice6591 2 жыл бұрын
As I was watching this, a singular thought began to pulsate in my mind: Quantum mechanics works. Relativity works. These are probably the two best and most successful theories in all of physics, yet (if theories could have emotions and personhood🤣😅) they seem to 'dislike' each other to the point of breaking down when extended to each others' domain of influence. Specifically, above Planck length, Quantum mechanics breaks. Below Planck length, it's relativity that coughs up a hairball. No matter how hard we try, we just cannot 'shoehorn' one into the other, either mathematically or existentially. This discontinuity has certaiy wrecked a lot of physicists' sleep cycle. The thought that I had regarding this is probably going to sound silly, but I don't think it _is_ silly. _Human science cannot unify quantum mechanics and relativity, but the universe does it flawlessly. Until science (meaning scientISTS😱🤣) figures out how to look at this problem from the POV of the universe, we probably won't be able to gain much traction on it._ I have noticed that the infamous Planck length is the one thing that the 'quantumly' small and the 'Relatively' large share in common. It's almost like some sort of mathematical event horizon that serves as a barrier to the Microcosm communicating with the Macrocosm, except once again, the universe has no problem at all, it's just us human across-structure computational meat sacks who can't do so. Aaaannnnd, that leads me to the question that is the point if all this. _Is it possible that there exists some process or function or interaction, occurring at that Planck level, which serves as a sort of 'transitioner' which ties the two disparate levels of reality, Quantum & Relativistic, together?_ We're missing something, probably something elegantly simple that slithers around in between the equations describing relativistic phenomena and those describing the quantum world. There has to be _something_ , because if the universe had the same problem that we have in unifying the two, we likely wouldn't be here, nor would the universe in this form. Is this even possible? If it is, _then what is that process/function?_ *Things that make us go, "so how many successive nights of lost sleep does it take to fry our neurotransmitter renewal contract & thereby render us incapable of such ponderings?"_ * 👽🤣👀
@BigNewGames
@BigNewGames 2 жыл бұрын
General relativity doesn't always work. That's why dark matter and dark energy were imagined. Because general relativity is unable to explain the motion of about 99.86% of the visible matter in the universe. So, general relativity doesn't always work.
@skyhorseprice6591
@skyhorseprice6591 2 жыл бұрын
@@BigNewGames Agreed in the literal sense. But then our best theories all have things they explain beautifully and things that seem to elude the scope of the theory. Relativity and QM, given their flaws, are still the most useful theories we have to frame our understanding of the universe. There are certainly things that relativity does not deal with too well, like the galactic rotation issue, for example. For me, though, the glaring issue is that breakdown at Planck length which sends our theoretical framework for the micro and the macro right into the weeds. I have begun to wonder, if we could solve that problem as the universe itself does, we'd have a tie between the two, which might make all manner of things more clear.
@BigNewGames
@BigNewGames 2 жыл бұрын
@@skyhorseprice6591 General relativity is far from being complete. Einstein tried for years to complete his equations and died before he could finish them. That's why his theory is unable to merge with QM and why it is unable to explain the motion of about 99.86% of the matter in the universe, my estimate. Ask any physicist or astrophysicist what's missing from general relativity and they will be clueless. They don't know what's missing or how to complete his equations. If they knew what was missing and were able to fix his equations then dark matter and dark energy would disappear. the reason why they show up as possibilities is because Einstein's equations come up short. I believe general relativity and QM will never be able to merge. I don't believe gravity exists at the quantum scale because it is a reaction, not an action. The same reason why gravity is weaker than electromagnetism or the strong nuclear force because it is a reaction to the other 2 forces, not an action or force.
@gmarie701
@gmarie701 2 жыл бұрын
Plank length is a unit of distance. Light speed is a unit of distance over time. Both are said to be universal constraints. Those two constraints are related by time. It seems possible that until and unless time can be quantified in terms of energy/mass, then the relationship between quantum and relativity observations at the micro and macro levels cannot be discerned.
@skyhorseprice6591
@skyhorseprice6591 2 жыл бұрын
@@gmarie701 I have an idea about this. If we look at particles *and* waves as distortions or twists in spacetime itself, we can actually visualize how space, time, mass, and gravitation are related. We know that gravity has a direct effect upon spacetime because of the atomic clock experiment; place one such clock at sea level & another in earth orbit. Calibrate both clocks to be synchronous to the highest degree possible. Observe the time record of each. Over that time record, the clock at sea level starts to fall behind the one in orbit because of spacetime dilation in a gravity well. Spacetime is literally stretched out the further/deeper we go into any gravity well. Why is this? Well, it's because mass bends spacetime. Why does mass bend spacetime? Because particles and waves are all the same thing- distortions or twists in spacetime. Imagine a large, perfectly flat and smooth tablecloth just floating before you. Now, put a bunch of little twists into the cloth. What would you see? You'd see the cloth being stretched into a curved shape that (roughly. This is an analogy, after all) that looks very much like the well known diagram of an unspecified ball of mass sinking into the middle of an increasingly distorted grid. The thing is, this distortion also affects *time,* which is never made clear. So the primary thing this does is, it answers the question, "why does mass affect spacetime and cause it to curve?" That answer is, "mass does not 'affect spacetime', *matter (mass) is COMPOSED OF SPACETIME THAT IS DISTORTED.* " What this does is reveal a universe that is energy based; matter arises from pure energy (spacetime), not the other way round. If this is so, we would then have a key to the long sought TOE.
@NOMAD-qp3dd
@NOMAD-qp3dd 2 жыл бұрын
Excellent.👏👏
@catkeys6911
@catkeys6911 Жыл бұрын
Beautifully explained! I had to picture a traveling compression wave in my head, though, because the animation at 15:46 was unable to show that. It just shows a "slinky" stretching and compressing. With a *real* slinky in your hands, though you CAN see this effect if you hold one end steady, and make a quick compression motion with the other - you will see a compression wave travel from that hand towards the steady hand.
@AmmoDude
@AmmoDude 8 ай бұрын
Yes, a slinky will contract on its own, from tension, to it's original compressed state. As all springs will do, they will return to their original state. Once in their original state, they will remain there until a compression or expansion force (mechanical, heating, cooling, etc) is acted upon them, they will not expand or contract on their own. So, in order for this image of gravity to work, there must be an attracting and repelling force on both ends of the wave or in between both ends, these forces oscillating in unison with each other, one pulling and the other pushing at the same time. The closer one end gets to the opposite end, the force pulling is diminished and evolves into a repelling force. A wave, on the other hand, moves away from the energy source until it contacts resistance. The resistance absorbs some of the wave's energy as it changes direction. A wave will eventually loses all it's energy and expire; it is not perpetual unless another force is introduced to perpetuate the motion. Yeah, I still don't get it.........
@therearenogods3716
@therearenogods3716 Жыл бұрын
Yet still no one can explain gravity?
@MrBollocks10
@MrBollocks10 8 ай бұрын
No? Didn't Newton nail it?
@therearenogods3716
@therearenogods3716 8 ай бұрын
two objects with mass attracts , as the distance between said objects increases the gravitational pull decreases. Does that explain "what is gravity"? Really? Great handle by the way.@@MrBollocks10
@stewiesaidthat
@stewiesaidthat 8 ай бұрын
​@@MrBollocks10gravity is the resistance to being accelerated. The compression of atoms.
@jddang3738
@jddang3738 8 ай бұрын
Easy. Everything is in space. Mass curves space. Things in space slide around depending on the curvature.
@bitofwizdomb7266
@bitofwizdomb7266 8 ай бұрын
Yea it’s ultimately a phenomenon 🤷🏼‍♂️ god did it I think
@turdfurgeson517
@turdfurgeson517 2 жыл бұрын
It sure seems to me like man has trouble thinking in a 3 dimensional world. I’m very confused by the hill terminology because we are not dealing with a flat plane in space. I also don’t like the gravity represented as a distortion of space because that always acts like space has an up or a down. The bigger question for me is why the planets don’t get pulled into the sun. What makes a planet find its happy spot in orbit. Must be something to do with the electric field put out. Perhaps that’s what orientates the planters from spinning uncontrollably. I don’t think that thinking of space as a fabric is gonna get us far fast. It’s hard for me to even have a thought experiment where your in a place where there is no ⬆️. I’m just thinking out loud here and am probably way wrong.
@helensteely6890
@helensteely6890 2 жыл бұрын
We live in at least four dimensions, never forget TIME. The one humanity can't travel within. Cats of course Wrinkle time, LOL
@quantumtacos
@quantumtacos 2 жыл бұрын
As a physically 3-dimensional being I so agree with this. But have you ever tried drawing 3-dimensional space on a 2-dimensional LCD monitor? And then tried drawing a representation of a warping of spacetime as an additional dimension on top of that? I've seen an attempt at it and it just looks, well... different but not any better honestly. The problem you're having with understanding those drawings that seem to have a concept of up/down is simply because they've actually done that on purpose. They've deleted one of the 3 spatial dimensions and replaced it with your intuition of "things always fall down" so that they can depict as many spatial dimensions as possible (2) in the same drawing as the gravitational warping dimension (the up/down, which is the whole point of the drawing) and do it in a way that we can intuitively interpret. You're meant to interpret the "down" direction as "this is a trampoline with people standing here and here and notice how a ball therefore rolls in this left/right direction, just like gravity would do in real life if we could draw the full 3 dimensions with a 4th dimension of gravity warp". You're meant to imagine that we are in fact 2 dimensional beings living on a 2 dimensional universe that exists on the plane/surface of a god-like 3 dimensional trampoline and that the 3rd dimension that you see in the imagery is actually representing the gravitational curvature of spacetime because nobody has ever figured out how to draw ourselves as proper 3 dimensional beings being warped into a 4th dimension. It's confusing and it's bad but you can search youtube for videos on "flatland" and related to help fix the badness because you're right that it just doesn't make sense as presented if you're not already indoctrinated into the idea of deleting one or more spatial dimensions to fit them on a 2d/3d picture. Just wait until you get into "spacetime diagrams" where we delete all but one spatial dimension. Actually it turns out that in most of physics we only need to talk about one spatial dimension to demonstrate most concepts. Thank goodness for that because I still can't wrap my 3d brain around what a 4d tesseract actually looks like and I think anyone who can is necessarily a dimensional savant. As a side note, or perhaps the preceding was the side note and this was all you meant to ask: the reason planets don't fall into the Sun is the same reason that if you throw a baseball sideways it won't fall back to Earth. I mean you have to throw it a lot faster than 100 MPH, like, a LOT faster. Ignoring atmospheric drag, if you throw a ball over your neighbor's house at around 6 kilometers per second it will go so far that because the Earth isn't flat it will keep going around the globe and won't land until somewhere in China. If you throw it at EXACTLY (err, approximately) 8 kilometers per second (again, ignoring atmospheric drag) it will keep going around the globe in a perfect circle and smack you EXACTLY in the back of the head. Please don't do that; at that speed even a small baseball would obliterate the top half of your body due to kinetic energy. And if you throw it at some 12 kilometers per second, even if you're aiming only a hair over your neighbor's roof, it will leave Earth's gravity well and never return. It just so happens, after billions of years of planetary evolution, that Earth is traveling around the Sun at around 30 kilometers per second, which is right at the "smack you in the back of the head" perfect circle speed which is why Earth just keeps going round and round the Sun in a nearly perfect circle, never stopping because there's no atmospheric drag to slow us down. The thing that made Earth find our happy "back of the head" orbit is that all the other proto-planets either collided with proto-Earth or proto-Mars etc. or were ejected out at high velocities to never return to our solar system. The only planetary orbits that remain after 4 billion years of this billiard game are the orbits that are circular enough to not crash in to other planets. Or to say the same thing in another way: planets DO get pulled toward the Sun. Earth is pulled toward the Sun by an amount that exactly balances our 30 kilometer per second orbital speed, and so we keep going exactly in a circular orbit. If the Sun suddenly stopped pulling, we'd fly off never to return. And if Earth suddenly stopped our 30 kilometer per second orbital speed, we'd fall directly down into the Sun like an apple falls from a tree.
@pevegaraoperivenkatagangad9570
@pevegaraoperivenkatagangad9570 2 жыл бұрын
As far as Solar System in concerned there are many things involve there. 1) The planets are arranged in the form of conic section from top to bottom with two naves of cones maintaining all the norms of circles and ellipses. 2) Probably the Sun is kept at the centre which governs all other planets. There are reactions between the different elements in the Sun with the elemen ts present in other planets. That may be the reason for the different vibrational sounds in planets. Otherwise there is no source for vibrations for such large bodies.3) We can apprehend anorher reason for the activity of the planets ie. While the planets are moving in elliptical orbits in conic section the central axis must be working like a very huge solenoid.
@prettysmile6869
@prettysmile6869 2 жыл бұрын
The Slinky was invented and developed by American naval engineer Richard T. James in 1943 and demonstrated at Gimbels department store in Philadelphia in November 1945. The toy was a hit, selling its entire inventory of 400 units in 90 minutes.
@KpxUrz5745
@KpxUrz5745 Жыл бұрын
Lovely factoid. My contribution to science is that I am old enough to still remember Gimbels.
@olgastepanov8479
@olgastepanov8479 8 ай бұрын
It was popular in the 90s after Soviet Union collapsed and Western imports started flooding the market. Mostly were plastic with rainbow color, but a few were made from Steel.
@peterclark6290
@peterclark6290 2 жыл бұрын
We already suspect that there are attractive and repellent forces that hold atoms in balance. We also suspect that atomic materials are made up of perpetual energy even smaller than electrons, protons... We know that some materials have an attractive force similar to Gravity called Magnetism. Putting together the experiment to prove they are one and the same: i.e., excess attractive waves unused by the atomic structure are able to reach beyond the 'mass' will earn the first person to do it a Nobel. Guaranteed. Furthermore demonstrating that the Universe (indeed the Cosmos) is made possible by the binary logic of those energies by compounding them is the key to Science, and by extraction Physics. By looking for simplicity first. e.g., the larger the mass the greater the attractive energy tells you... that energies are under-used so they can do other things...? You don't need Einstein's wild guesswork anymore, be free. BTW we will never be able to prove any of it, we came along (17 billion years) too late to see 'inside' and collect evidence but common sense says it ain't what you got, it's what you do with it.
@robertspence7766
@robertspence7766 Жыл бұрын
General Relativity is not wild guesswork. It is a wildly successful theory. In fact without General and Special Relativity corrections GPS would be off by 10s of miles per day and useless. Our clocks also could not be synchronized and the internet you used to post your comment and this video would not exist.
@peterclark6290
@peterclark6290 Жыл бұрын
@@robertspence7766 Not GPS, again. That was debunked years ago. In the code there is nothing to do with it. Check.
@robertspence7766
@robertspence7766 Жыл бұрын
@@peterclark6290 Geez. There is nothing to debunk regarding GPS corrections. Time runs at a different rate due to velocity difference between your device and the satellite as well as proximity to earth's gravity well. It is absolutely a feature required or GPS will not function. If someone "debunked" this it is 100% disinformation to support an agenda. It is so easy to validate.
@peterclark6290
@peterclark6290 Жыл бұрын
@@robertspence7766 Find some GPS code and check it out. I have. Moving objects produce a temporary relativity: similar to combat pilots needing to lead their shots when using guns. That relativity requires everything to stay the same - which rarely happens. Hence the constants have be updated all the time. Any construction requires rock solid basic elements and the mere fact that we are here in a functioning Universe indicates a permanency of basic form. As I understand it there is only Energy and Space. The fundamental energy 'packets' can compound into atoms and from those to acids, alkalines, minerals, etc. Which can break down which indicates that the basic units are not Legoland uniform and some rare harmonic imbalance can undo the structure = Entropy. The energy packets, because they are Electro-Magnetic invoke a binary logic (attract/repel, etc). Every manifestation is based on that rock solid foundation. Ergo: Life and Intelligence are 'of the Universe' unless you prefer to see friendly, smiling faces up there. BTW Time is merely a by-product of the Cosmos not being static. It too is absolute. The Cosmos is Infinite and Time is Eternal.
@robertspence7766
@robertspence7766 Жыл бұрын
@@peterclark6290 No, you haven't. Either you do not understand the correction or you are lying because it is what it is. There is no debating with the anti-science conspiracists. Do you teach physics for a national research laboratory? Well, I do. End of conversation.
@periklisspanos7185
@periklisspanos7185 Жыл бұрын
General relativity doesn’t care about our explanations, it does his thing
@teepee431
@teepee431 Жыл бұрын
Good God, you guys. Breath-taking. Carry on. Winderful.
@colinmaharaj
@colinmaharaj 2 жыл бұрын
12:20 yes I myself am thinking that ... even the mention of the term 'gravitational wave' is a contradiction of sorts. I have a hypothesis that uses time to explain how gravity works
@maelradec6766
@maelradec6766 2 жыл бұрын
Gonna learn today
@gyro5d
@gyro5d 2 жыл бұрын
There is no magnetic attraction. The magnetic fields are attached to a low pressure vortex, between the magnets, into Counterspace. Ken Wheeler. 5) Magnetism gives Magnitude to the Universe. Gravity is Magnetism of objects attracted to a low pressure vortex into Counterspace. Mediated to center of everything is Counterspace/its Mass. Center of mass, mass' mediated to its center of Mass/low pressure vortex. Mass is in Counterspace, Matter is in Space. Momentum is Matter moving in Space and Mass moving in Counterspace. When Matter is altered in Space, it's Mass is continuing in Counterspace. The Bullet Cluster Galaxy. "Gator Team"
@rw2452
@rw2452 2 жыл бұрын
I want to learn about what you said.
@gyro5d
@gyro5d 2 жыл бұрын
@@rw2452 I learned the basics of "Field Theory" from Ken Wheeler. It's the Aether, that is a word the phd's won't mention. That's why I use it as much as I can. Aether answers everything, Standard Model Science Fiction just makes up names for the same things, different energies. Aether has a Dielectric energy hyperboloid that rotates in one direction. It's really 2 vortices, an electron and a positron. Separated by the near infinite capacitance of the Inertial plane/Counterspace. Surrounded by Aether's Dielectric voidence field/Magnetism. That creates nodes from there coaxial circuit, transverse waves, that EM waves/Light propagate on. Light does not have a speed, Light has a rate of induction. Light is instantaneous/entangled, creating these nodes. Light's rate of induction is Magnetism's rate of node creation. The Universe began when Dielectric energy tunneled from the Inertial plane/Counterspace. Dielectric energy created Space to exist in. This is when Time began. Ken Wheeler and Eric Dollard. Dielectric energy is Terminate to Terminate, Inflation. Dielectric energy became it's own field of Dielectric voidence field/Magnetism. Magnetism gives Magnitude to the Universe. The Grand Expand/Big Bang. Dielectric energy and Magnetism transverse waves created the nodes, that EM waves/Light propagate on. Temporal into Spacial. And then some! Ha!! Ken Wheeler has over a thousand videos on "Platos Field Theory". Aether was believed in for thousands of years. It's against Einstein, So that's why! Ha!
@rw2452
@rw2452 2 жыл бұрын
@@gyro5d Thanks. I've heard of the Ether and was curious about it. Thanks again for the sources for me to look up👍👍Update: I know who your talking about now. The guy with the tattooed arms. I checked pout videos on magmatism. Very interesting.
@juasmith1
@juasmith1 Жыл бұрын
In 2016 they proved what Bob Lazar has been saying since 1989, that gravity is a wave.
@rohitchat5538
@rohitchat5538 2 жыл бұрын
Sean caroll is one of Who I when I learn from about .. I takes seriously my Interest Nd exciting knowledge
@whirledpeas3477
@whirledpeas3477 2 жыл бұрын
What?
@tobywestfall2970
@tobywestfall2970 5 ай бұрын
Why does the camera go from side to side? And you have to keep repositioning yourself to look at the camera?
@JohnRoach-jn4dg
@JohnRoach-jn4dg 3 ай бұрын
Explain the Pound - Rebka experiment at Harvard University in 1959. Explain the accelerometer detecting and measuring the acceleration of the unmoving surface of the ground.Thank you.
@NickSam121
@NickSam121 2 жыл бұрын
nice video. very good explanation...but there are still some other cases that we do need another theory of gravity, for example the edges of the solar system, or weak-gravity limits...
@douche8980
@douche8980 2 жыл бұрын
Gravity gets weaker from it's starting point the further you go out and while never vanishing altogether ot will eventually get overtaken by gravity fields from other celestial objects with stronger gravity fields the further you travel away from any given center of gravity. There are most certainly places on the universe far away enough from any center of gravity where it would hardly be bound toward any given object.
@ty9884
@ty9884 Жыл бұрын
@@douche8980 I get that on a cosmic scale. But what does space bending have to do with watching an ant crawl up a blade of grass, defying the gravity of the entire planet?
@JD-xd4sy
@JD-xd4sy Жыл бұрын
@@ty9884 I've heard it explained as gravity being a much weaker force than the nuclear force that holds atoms together. On a grander scale, that "weaker force" holds the planets in their orbits, but it doesn't stop the ant from climbing or us humans moving against the gravitational pull.
@ty9884
@ty9884 Жыл бұрын
@@JD-xd4sy I hear you and I agree. But I often hear guys saying gravity is not a force. It bends space.
@TRUENEPHILIM1
@TRUENEPHILIM1 Жыл бұрын
Density & Buoyancy
@madmattdigs9518
@madmattdigs9518 5 ай бұрын
I used to think it was pulling me down towards the center of the earth, but now they tell me it’s actually pushing me down from the sky. It blows my mind…
@bryanreidsands6854
@bryanreidsands6854 8 ай бұрын
How do you measure the speed of gravity? What if each and every massive object is exerting gravitational force instantaneously on everything in the universe? Do you lose weight when the moon is overhead? Can you feel it? I’m guessing you can’t. If there were only two coconuts on opposite ends of the universe, would they eventually come together because of gravity?
@nickmerix2900
@nickmerix2900 2 жыл бұрын
What is the fabric of spacetime made of ? Sold by the yard? Available at Walmart ? Or amazon?
@matthewjacobs141
@matthewjacobs141 2 жыл бұрын
Question: does a rotating mass generate the same gravitational force as a nonrotating body?
@quantumtacos
@quantumtacos 2 жыл бұрын
No not exactly. There will be an additional Lense-Thirring effect at least, and perhaps other effects which are not yet understood.
@openyoureyesandseethefutur5802
@openyoureyesandseethefutur5802 5 ай бұрын
dont know what gravity is , but its a good thing its exists
@helpmelearn1181
@helpmelearn1181 2 жыл бұрын
“Newtons theory” exactly just what it is “just a theory” density and buoyancy are just fine to explain how objects “come down” or “fall down”.
@entangledmindcells9359
@entangledmindcells9359 2 жыл бұрын
So how about why objects weigh less at higher altitudes.. When objects weight less in denser mediums.
@Dino-kr9cb
@Dino-kr9cb 8 ай бұрын
This is so aggravating. No matter how hard i try to understand it my mind just can't conceive it.
@stewiesaidthat
@stewiesaidthat 8 ай бұрын
SpongeBob SquarePants. Forget everything you know and concentrate on fine dining. Here is the equation you need to understand. F=ma. Since a hammer and feather fall at the same rate in a vacuum, the mass contributes zero to the force. So it becomes F=0a. Anything times zero is zero. No external force is acting upon the apple. The apple doesn't fall, it stops accelerating. The laws of physics are the same in all frames. A car being towed and the cable snaps. What happens? The car is no longer being accelerated so it slows down. An object in motion stays in motion until acted upon by an outside force.. Force decreases with distance. The car is slowing down because of rolling resistance. The apple is slowing down because of air resistance.. The earth is spinning in a circle so your trajectory through space is curved. It's basically two runners on a track in the same lane one stops accelerating and is run into by the following runner who then accelerates the first runner. Since the air underneath the apple doesn't have enough force, the apple keeps slowing down as more runners come up from behind to accelerate it. In an infinite universe with everything spinning in circles, which direction is up? The direction with the most acceleration. The greater the radius, the more acceleration there is. Newton had it right with his Laws of Motion. With Acceleration as the frame of reference. But then went on to use mass as the frame of reference and physics as been using the wrong frame of reference ever since..Mass doesn't curve space. Motion curves space. Motion is acceleration. Newton's Laws of Motion perfectly explains 'gravity' when properly understood.
@FormsInSpace
@FormsInSpace Ай бұрын
if everything is relative, why would the fabric of "gravitational spacetime" cause a dimple in the fabric to bend "down" rather than bend "up" or "left/right" ? in which case the object orbiting it would have no way to move at all. and should stop in it's place as it approached another more massive object. .. when you assume the curvature of the fabric to bend "down" you beg the question of gravity and relativity itself. I'd like to see a demo of what happens when you put that fabric bend all ways at the same time (down, up, left, right) I assume the object would not orbit, but stand still.
@emkoravo
@emkoravo 2 жыл бұрын
16:15 so is there a level of harmony between the expansion and contraction? Does it enable the ability of the object to stay in relatively neutral to itself? What implications does that have on objects effects on others and the motions of travel through space?
@djdrocco
@djdrocco Жыл бұрын
If you're asking about the compression and expansion of matter objects caused by gravitational waves, then yeah technically, propogating through matter should cause infinitesimal tidal forces within the object as its component particles react to suddenly being alternately closer and further away from each other. As I (barely) understand it, this should rob the object of some vanishingly small amount of angular momentum, but also heat it up a similarly tiny bit. I don't think gravitational waves have a push/pull effect with regards to an object's velocity, since the wave itself imparts no momentum to matter it moves through. Someone with a more accurate GW model in their head will hopefully be able to tell me how wrong I am and why.
@Rayagoldendropofsun
@Rayagoldendropofsun 8 ай бұрын
I've got no GW model, whatever that is, but Gravitational Waves are misleading concepts. Newton's Gravity MOTION is a myth and has been Debunked. His equations works perfect with Energy, while the mythical Gravity get all the credits ! Based on MOTION, here are some of Earth Energy Activity's in MOTION, Hurricanes, Tornadoes, Dirt Devils, Earth Quakes, water spouts,ocean waves, lightening, thunder storms, jet stream, Tsunami, Earth's Core, the atmosphere, plant growth, photons rain, the drift of the spoken words, traveling sound of the bell, the wind, satellites, communication, birds and plane flights, cars in MOTION, and much more, including the human body internal and external MOTION, feel free everyone to prove me wrong, and physically connect Newton's Debunked Gravity MOTION with the above Activity's .
@invent5540
@invent5540 5 ай бұрын
It was my understanding that Einstein was referring to the prediction of photons being either waves or partials and the prediction of quantum duality... when he refers to spooky action at a distance... not gravity. Correct me if I'm wrong?
@ZENTEN7777
@ZENTEN7777 2 жыл бұрын
What is the relationship between gravity and a magnetic field? Does gravity have polarity? What is the speed of the propergation of gravatational waves? What would happen if there was a fracture in gravity? What happens to gravity in a very viscous clear liquid? What happens if I park my spacecraft in a very empty part of space? Will gravity pull my spacecraft in some direction? Why does gravity escapes comprehension?
@aucourant9998
@aucourant9998 9 ай бұрын
As the two electrons approach each other, how does either electron know that the other electron is close enough to cause it to emit a photon? What triggers the photon release?
@josephEdakattil
@josephEdakattil Жыл бұрын
Gravity is a relative term. Variation occurs according to gravitation of base object. For example: (1) A planet's gravitation is very low. (2) The object is in a place where no gravitational force. In such places the apple will not fall on the person's head sitting directly under it. Other forces such as: Wind, Gravitation of other objects, Zero gravity, and so on.
@briankepner7569
@briankepner7569 Жыл бұрын
I thought comes to mind that the initial annihilation of the matter and antimatter that sprung from the quantum firmament in the first few seconds of the universe resulted in nearly 100% entropy. That very small amounts of matter and antimatter was left over. However collapsing space-time versus expanding space-time must have also had its annihilation. That what was left over was collapsing space-time in a large degree being dominant over expanding space-time. A space-time that allows for the expansion of space pretty huge volumes of empty space and that matter is generally pressured into confines or filaments of collapsing space time. If they could run a model of the universe in reverse taking out the filaments and reversing time to win the expanding space-time was at zero.
@DennisMathias
@DennisMathias Жыл бұрын
No such thing as empty space.
@stolasamon-seere5319
@stolasamon-seere5319 2 жыл бұрын
Hyperbolic curve for speed of light. Matrices for electromagnetics. Spacetime. There's a connection there. Higher dimensions. Time drag. Multiverse?
@johnlay3040
@johnlay3040 Жыл бұрын
I am not a physicist, but in my way of thinking is if it is just space geometry, then the bigger object will form a bigger curvature than the smaller one. Therefore larger gravitational effect. How come a black hole has such a huge gravitational effect? What kind of curvature does it create? Does GT explain that?
@ritemolawbks8012
@ritemolawbks8012 Жыл бұрын
Both Einstein and Newtonian mechanics explain that the source of gravity as the local density of matter, energy, and momentum. Black holes are compact and have higher mass/energy densities. General Relativity does explain black holes.
@Strydr8105
@Strydr8105 2 жыл бұрын
I asked that exact question in third grade! I'm now in my 60s and still have no answer?
@stick9648
@stick9648 2 жыл бұрын
Thanks
@mal2ksc
@mal2ksc 2 жыл бұрын
Open request to Dan Hooper: Just because you look like George Clooney, that doesn't mean you need a Hollywood jump cut between your three available angles every ten or fifteen seconds (or less). Style is starting to get in the way of substance. I was giggling while imagining it as a drinking game, having to drink on every hard cut, but we'd barely have time to pour for the next one. :) I might add that you could just pretend not to know about some of the camera switches, like Emily Levesque did after you. Don't turn to face the active camera, keep talking to the previous one. Then the sheer number of them is somewhat less distracting.
@laurencemiller354
@laurencemiller354 7 ай бұрын
YOU DON,T SEE WHAT I SEE. Look up clouds ,what do I see, I see the Australian SPRITE RETURNING HOME from the MIDDLE EAST
@denischarette8547
@denischarette8547 Жыл бұрын
How come a gravitational wave moves at the same speed as light? What is the ``link`` between the two?
@ritemolawbks8012
@ritemolawbks8012 Жыл бұрын
Any signal or information without mass moves at the speed of light. That's the velocity of cause and effect, and since light and gravity are both information about mass and energy, they move at the speed of light.
@jhmmke6047
@jhmmke6047 Жыл бұрын
If it is impossible to distinguish between the forces of acceleration and gravity, does that mean that acceleration can create gravitational waves?
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