I have seen this metaphor around for years and it drives me fucking nuts. It seems to make sense except for one minor detail which is that space itself is a fucking 3D construct so when you have a planet following the curvature of a 2D object makes no fucking sense. What's more the motion would be far more complex because it is a 3D curvature in all directions!!
"On a body as large as the sun, it would be impossible to project a disturbance of this kind [e.g., radio broadcasts] to any considerable distance except along the surface. It might be inferred that I am alluding to the curvature of space supposed to exist according to the teachings of relativity, but nothing could be further from my mind. I hold that space cannot be curved, for the simple reason that it can have no properties. It might as well be said that God has properties. He has not, but o
Time than we can talk about overlaping Time. Finali in theory we can have object that did not move from point A, so means Time was not involved in object's movement. Since everithing moves the Time is necesary, if there is no Time there is no movement, and without movement Universe would not happen. Existance of Time is real factor. You can call it using diferent name, but you have to make definition about Time. Time is aplicable to te matter no mater what speed matter or object poseses. There
bilological change that we can not denie. In our Solar sistem Sun and planets did change position. During this year in entire Universe everything did move or did change wich includes micro and macro world. If year before 2010 body moves from point A to point B slover than sped of light, with speed of light or faster than speeed of light we can't ignore the fact that object was on the move for so called one year. We can have other object moving with same speed from point C to D during same
To 16 nowhereman. Old greeks and probably other old civilisations where avare of the fact that universe without Space,Ttime, Energy and Mass would not make sense. Means without Time Universe would not exist.Let's do little traveling experiment. If body moves through the Space from point A to point B one light year wich could be for people on Eart let's say jan. 1st 2010 until dec. 31st 2011. We as a humans did become older one year because during this year in our bodies did happen certain
I don't really get it...What power is it that makes so that the smaller ball (earth) does not collide with the larger ball (the sun) when it falls down in the pit (the curved space-time )...? What is it that makes so that our planet can pass the sun without getting closer ... and all other planets for that matter....anyone..?
@lilillbill The momentum of the planet as it orbits forward tends to carry it farther out in space, but the Sun tends to bring it back in to itself. These two factors cancel, causing the planet to orbit the Sun for billions of years.
that can't be explained. Things we knew, or we do not knew. It is so hard to physicists and astrophysicists after Newton to admit that in last hundred years they got lost in Space and in Time.
not stop the Time. First at all time is natural phenomena not yet explained. We as a Humans trying to "hook" to Time our devises to determine our position in Space and Time, but our clocks are not the same as what is Time. I did not change my position regarding to Black halls and time in last 30 years, and this days i was reading that Steven Hawking said that black halls are not black as he first tot. All this crap from Einstein and Hawking is so abstract. There is nothing in the Universe
@SMILJANable Time is an illusion. It is only a word invented by humans to communicate and bring meaning to pin-point a place in space. A better word for time is change. So, there is space and change and not space and time. If you travel at the speed of light you get no where because all you are doing is changing your position in space and you really didn't travel in time.
completely wrong. Space is filed with moving particles wich are moving in wawes having diferent velocities. Light wawes do cary photons through space with light speed. Speed of the light is not fastest speed in the Universe. Experimenting with wireless transmission of el. energy Tesla was changing length of the electrical wawes, and doing so he was able to achieve speeds of electrons from infinite to the speed of light. Space is not bendable in no way. Also gravitation in Black holls does
Merjoatlor,exactly, space is not curved. Objects in the space do move in curved lines, specifically in our Solar system. For example Earth is moving around Sun in elliptical orbit. Gravitational force of the Sun and Earth is INSUFFICIENT to keep Earth orbiting around Sun wich again has own trajectory within Milky way. To explain Earths movement around Sun Einstein had to "DIG TRENCH" around Sun stating that Earths gravitational pull curves or bends the space around the Sun. This is
Space is electrical pool. Electricity is force that governs the universe. Not knowing this Einstain and his followers had to invent 90+% of universe to make their story "complete". Result is that young students were forced in last 100 years to study wrong or fake science. Great damage was done to the humen kind, it is time to move on forgetting about modern Jesus Christ - Albert Einstein.
STRAIGHT LINE IN CURVED SPACE. THIS IS LIKE SAING THAT CIRCUMFERENCE IS STRAIGHT LINE. WOW, THIS GUYS ARE SELING TO PEOPLE THIS STORIES MAKING REAL MONEY.
Electrical force wich fills the space keeps universe in the order that we know. Curved space is other Einstein's stupidity. Einstein did not know more than basic geometry, and this is not enough to explain Universe.
@KinaNafasi Base on Einstein Theory Space-Time contium time and space are but one, so based on that yes Time will be affected too..time is relative remember that, and is changing based on Mas, velocity so different planets and stars have different frame of space-time than ours...
Enjoy reading Theory of Relativity of Albert Einstein
@KurdstanPlanetarium What about the theory (a higgless one) about closed volumes curve space time and its the pressure around this closed volume that determines the mass? This would explain gravity and the faster than light nutrino
@HardGravy I don't think the idea of closed space is a right one, since space is round but has no limit, as much as Earth, you can go round the Earth without seen something called the edge, yet is curved around itself making spherical shape...beside the streaching Space Time fabric is gradual all around, it does not come to an abrupt end by the closed space as you suggest !!
@KurdstanPlanetarium You don't understand what I meant.. not closed space, but closed volumes. An atom is composed mostly of open space right? A vacuum of a sort (vacuum being no particles are present). An element that has twice the volume (at the atomic level, so if you got rid of all the open space) has twice the mass. twice as many protons, neutrons, electons=twice the mass correct? Well lets consider the possibility that spacetime curves around this CLOSED VOLUME -- higgs-boson(dot)org
Wait! So you mean Space itself is curved by the mass of the sun???? The planet is really going in a straight line? wow. So in once sence gravity doesn't pull a planet. it curves the space which curves the path of the planet????
there are different types of times and I would explain:
-1 linear time that measures all time, let's call it God time.
- bubbles of time, which is personal for objects like planets or people, time goes faster or slower depending of the object or the observer - The right now moment, this moment exist right now, and it exist 1 million years ago right now, this moment transcends 3dimensional, it exist at all times and at all places, past does not get destroy, and future already exist.
@derfilmmacher one thing do remember this is a very simple diagram reprsentation of Sapce -Time continum, and as such one should not expect too much complication as the whole subject is a mind bogling matter...here is an oportunity for you and every one else to enjoy simplicity.
yes planets, moons and every objects in Space and even on sub atomic particles are in elliptical orbits .
Mass can be defined as a quantitive measure of the resistance an object has to change in its velocity.
ACCORDING TO THIS SPACE IS ONLY CURVED IN ONE DIRECTION. THERE ARE MORE THAN ONE DIRECTION. IF FACT I THINK THE SUN WOULD DISPLACE THE SPACE AND ACTUALLY PUSH THINGS AWAY, NOT ATTRACT TO CAUSE ORIBIT
@billyandtherockets you're an idiot who obviously doesn't have a clue. this is a diagram representation showing one plane through space (using your argument you could just as easily say its wrong cause there are no blue grids in the sky. IT'S A DIAGRAM!). you need to use your brain to consider the effect at all possible points in all possible planes, ie 3 dimensions - which you cannot represent as a diagram as the screen would be entirely full of overlapping blue grid lines at every pixel. fool.
Spacetime is limited, and so was its predecessor (The concept of gravity attributed to Newton) - Both are based on the perceived effects, which means that the immediate cause or the deeper causes have not been truly shown. But they are great contributions relatively speaking.
@KurdstanPlanetarium I was not able to find the rest of this video documentary, I am working on an research paper about space-time curvature... do you have anymore videos you think might be useful? ( I Looked)
there's no such thing as "time" except the way particles constantly change in space.. things vibrate and change the way they are arranged and how they look in space all the time, so time is just illusion except in crazy human scientist minds. Einstein was an idiot.. "c" is the only thing in the universe that doesn't change, theory of "relativity" what an idiot.
This is so true. Space as we know it is 3d it bends into gravity making time shorter nearer the mass and longer the further away fromvthe gravitional field
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Oh,, they say the sunami in India 2004 tore a hole in the space/time continuum ...wsy? What does this mean, shortening of days, a wobble in the Earth?
@ConstanceHelwig Tsunami of Boxing day was the result of under ocean Earthquake that caused a 100 km wide area to rise about 20 m, and the shock waves spread throughout the regions, nothing to do with Space Time Contiuum. a shortening of days meaning days gets shorter, but on Earth the days getting longer in fact by about an hour every 200 million years. Wobbling is a result of axis of rotaion, the axis while every 26000 years make copleter rotation it also changes in size from 21 -25 degrees.
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The space around that object won't bend around the object, because it's a 3-d surrounding. You'll break your brains trying to fit those two facts together.
Here's how it really works, but mute the sound, it contributes nothing:
@Yezpahr first its nice to use a polite language in a science related subjects, cos it does shows your level of understanding.
second it breaks your brains only, as you have to understand this is a simplified and easy version of a a very complicated Space-Time continuum.
Bending of space according Einstein General Theory of Relativity is pridicted by observing Solar Eclipses and that proof was enough to make Einstein to be famous in a time when everyone laughed at him as you do here.
If spacetime is a 4-dimensional fabric then how can it be represented by a 2-dimensional fabric while a 3-dimensional object is represented by a 3-dimensional object. Also this model shows a pull towards the BOTTOM not the CENTER of an object. I'm not trying to be critical but I just have never quite understood this gravitational model
@AntiMatterWave well, to show a 4 D model is impossible, what you see here as 2 D imaine it all around the object ther central body. its what happen all around that body in all direction the same as you see in this model and as you said shows towards the bottom, but in reality its all around and that cant be shown on a model like this...
@KurdstanPlanetarium So when you add an object it curves the fabric of spacetime, is the depth of the curve at a point representing the magnitude of the effect of gravity then?
@AntiMatterWave thats more likely but the curvature at the point representing the magnitude of the effect of the Mass, the havier the object (i.e more massive), the more curved the fabric of Space-Time continum will be.
and remember its all around the object not just what you see here as 2 D.
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That is a good question! Think of a straight line as the "natura and obviousl" path between two points in a given geometry. A straight line in a two dimensional flat (Euclidian) space (the type of geometry we learn before we go to univerity and complicate everything) is the "ruler" straight line you are refering at (I think). A straight line on the surface of curved space (a sphere) is a line that follows the curvature of the geometry at hand.
@lilmizzscatterbrain do you mean the rubber sheet or the object that used as a planet?
as for the rubber sheet that represnt curved space, they are not straight lines at all when heavy objects placed in them, the same way the Sun bends the Space-Time that beding depends on the size of the object places in, giant stars bend more than smaller ones and the planets tends to follow those curvatures..
"People think that time is a strict progression of cause to effect but actually, from a non-linear, non-subjective viewpoint, it's more like a big ball of wibbly-wobbly, timey-wimey...stuff."
here's my question: If this analogy is correct, then why wouldn't the planet eventually get sucked in completely to the Sun? If that trampoline like sheet was curved, wouldn't the planet, just like a marble on a trampoline, as it slowed, fall into the center? Put in another way, why isn't the Earth slowing down and getting closer to the sun?
@JBeezie428 for the start, this analogy is to simplyfy a mind bogling subject of Space - Time and General Theory of Relativity, so dont take it for granted, however saying that, and just to answer your question, the planet has its own velocity that balances the pull of the Sun, and incases even surpas it, as the case of the Moon. you know that the Moon departs Earth by a rate of an Inch every year and one day it leaves Earth forever, by then Total Solar Eclipe will be a thing of the past.
@JBeezie428 dont think of it as just a 'blanket', its like the blanket they show but in infinite amount of them in 3d space. Its much easer to understand then to explain but just look, marvel, this is how the human mind trys to comprehend reality :)
@JBeezie428 the curvature of spacetime EXPLAINS gravity and therefore therefore this relation does not INCLUDE gravity. more importantly, the earth does not move in a circular path, it moves in an elliptical path, and it is in fact moving fastest when it is closest to the sun (remembering keplers laws regarding the period of planetary revolutions). this diagram isnt taking any of that into account its merely demonstrating einsteins link between relativity and classical mechanics.
@JBeezie428 Your idea is correct, the only difference between the earth orbiting the sun and a marble orbiting some object on a sheet except for the lack of one extra dimension is that the marble i slowed down due to air resistance and friction. But in space there is no air, and the sheet has no friction (as far as we know) and that causes the earth to stay at the same speed in its orbit and therefore it is forever falling towards the sun but never reaching it.
@JBeezie428 You can think about it like trying to make a circle with a piece of string and a nail, one person holding the nail, another holding the extended string. The one holding the string will attempt to go in a straight line, but is bounded by the twin. Spacetime is curved under mass like the sun, but the velocity of the earth is great enough to keep it in balance with the Pull of gravity. The earth is actually falling continually towards the sun, but fast enough to maintain it's orbit.
@JBeezie428 The simple answer you are looking for is this. The planet, before it is caught in the gravitational field of the sun, is moving uninterupted. In space, there is almost nothing to stop this movement, so this "planetin motion will stay in motion." When it hits the gravitational pull of the sun, a tug-of-war insues with the planet trying to move in a straight line while the sun is pulling it in, so a balancing point is eventually reached between these two pulls, resulting in an orbit.
@JBeezie428 its just a representation. space time is every where in every direction around us not like a 2D sheet shown here. They just use that model to give people a clear indication of what it does
This is a very bad visualization of spacetime curvature. The model here is very stupid, for the heavy object bends the surface *bacause of* gravity; you can't explain gravity in terms of gravity, for that's not an explanation.
This is not how spacetime bends according to the theory.
Spacetime doesn't bend "under" the object; it bends *towards* the object.
@hasenj for the start this is an explanation of Einstien's General Theory of Relativity not Newtonian Gravity, what you see here is how Einstien thought of Space-Time Continum bending around objects in space, his explantion does not depends on Gravity as force but as wave like ripples in the fabric of Space-Time.
what you see here is just a simple explanation, so dont take it as simple as you see here, for the Space-Time does not bend under an object but all around it in the same manner.
@hasenj my comment was about the video itself .. the video does not represent the general relativity model of spacetime curvature. The video explains gravity in terms of gravity. Why does a heavy ball bend a trampoline? Because of gravity, of course!
We live in an Electric Universe, not a gravitational universe.
When are we going to realise that Einstein was wrong about gravity. Black Holes, Neutron Stars, dark matter, dark energy and all this other conjured up stuff do not exist. We need to stop wasting money searching for new particles and forces invented by mathematicians. A good measure of a theory is its ability to predict the outcome of new observations or explain them without introducing additional tailor-made concepts.
The planet-like object moves in an ELLIPTICAL path because its lateral speed/momentum is just right. If you watch an animation with a grid, you will notice that every line bends a little bit toward the mass in the center (but not this animation). Here are two animations I think illustrate the idea a bit more accurately
Here's a 2D animation.pause this video at the 0:37 mark
How is the planet following a straight line? You can see the straight lines of the graph paper and they don't follow the distortions that the sun creates.
@KayBeeEee1983 A very good point, thanx... but remember its a model to explain mind bogling case of Theory of Einstein in a simple manner, so dont take it litterally but do undestand that Planets want to travel in straight lines if they are not humpered by distortion in the Space-Time arund them,(Newton's Gravity)...
@KurdstanPlanetarium My question wasn't rhetorical. I don't quite understand gravity. I understand the theory that mass distorts the fabric of spacetime, but I don't understand how that causes what we observe as attraction. These two dimensional illustrations don't help me because in these demonstrations, it's 3D gravity distorting a 2D plane. Take away the 3D gravity, and the balls wouldn't distort the plane anymore.
@KayBeeEee1983 The lines only there to illustrate the curvature of Space-Time, without it how to show it, we have to bring a solid surface to do that and by that Space itself will be meaningless !!
@7150285 How else were they going to picture an extradimensional deformation? Human brains are miserable at picturing 4D space. They compressed the 3 dimensions into 2, to protect your sanity.
@7150285 No, time is separate; the dimension in which the deformation occurs is another spatial dimension... just like in this video, you have a 2D surface that stretches on a 3rd axis; if you live in the 2d space and you'd start measuring things, you start noticing weird things around that large mass; then you'd invent Riemannian geometry to describe it, because Euclidean doesn't get you anywhere, and thinking in 3D is impossible, the brain never evolved that ability :)
@7150285 Something to do with string theory and mathematical models that would give even college grads nosebleeds :)
The closest thing to an explanation I can recommend is a BBC Horizon documentary from 2005 (I think) titled "Parallel Universes". It starts off weird, but explains how they got to 11 dimensions starting with part 2.
@StrikaAmaru 11 dimensions is 10 dimensions of space and 1 dimension of time...but i personally dont believe in string theory though, after all, its only a theory
@7150285 "dont believe in string theory though, after all, its only a theory"
I feel compelled to correct a common misconception: theory for science isn't the same as theory for the average Joe. What Joe would call a theory is in science a hypothesis at best. A sci!theory describes the mechanisms by which an event occurs, and is supported by observations made, and by predictions it makes.
Observation (or predictions) that don't match up lead to the theory being refined. Re: gravity and Mercury
@ai1888 well the planets dont fall towards the centre, but on the contrary they do want to escape in a straight line but the curvature of the Space-Time created by the Sun (Newtonian force of Gravity), makes them bend and follow an ecliptical orbit around the Sun.
@ai1888 a good question..well the planets own veloctiies ares what make them move in a straight line, but then are bendes by the curvature of Space - Time, and that action is "balances" by the inward attraction. in most cases the word balance is relative, as in the case of our Moon, the velocity of the Moon makes it gettion away from the Earth by as much as 3 cm in a year, one day will escape forever. and we loose our Moon, one consequence of that we wont have Total Solar Eclipses any more..
@ai1888 gravity bends the straight line the planet-like object into what looks like a circular path but- My GOD! this is hard to explain, even for me. Ummmmm... AH! The planet IS following a straight line, but only in curved SPACE-TIME
- while including the quotation marks, look in Google with "On Relativity and Absolute space, time, velocity"
- there you can read about critiques on Einstein's thought experiment regarding the relativity of simultaneity, the Lorentz contraction, the Michelson and Morley experiment and the light clock.
- a 10 minutes introduction to that website is also shown in a YouTube video. Search at YouTube using those 5 keywords in a row : Einstein train simultaneity thought experiment
@sizzlerjoe1 But you still have an electron and a nucleus.
Jokes aside, I was referring to quantum foam, which does exist everywhere. That's why nothing is truly empty, there are virtual particles popping around and making even intergalactic space a little hotter than absolute 0. Even if you wouldn't have random photons scattering from galaxies, there is no place in the Universe, no matter how small, that is true vacuum.
I would think that the curvature of actual space would be measured by how much light's path is affected and not by the movement of masses influenced by gravitational attraction.
@KurdstanPlanetarium Then either the planet isn't really following a stright line because even a mass as heavy as a planet bends space very very little-the force of gravity would be more responsible for making the planet follow a curved path, OR the force of gravity is much much stronger than we think it is. However the force isn't attraction between two masses. It is instead the attraction of mass to the true center of the universe- the center being the center of a hyper sphere.
So if a planet passes closer to another planet, it will go faster, because there is more force. As it reaches farther away, it will eventually slow to a farther point, then "fall" back down, gather speed, and slow again.
The sections of the orbit in which the object gains speed are longer than the slower sections, meaning it is not a perfect circle, but rather an ellipse.
why doesnt the object go further towards the heavier object then?..why does it maintain the distance..and why does it revolve around it...sometimes i feel like all einstein did was just confuse the whole world
@mammothana Good question: there is a balance between the gravitational attraction and Cetrifugical forces that keeps the smaller oject i.e the planet stay in a stabel orbit...when that stability tiped off to one side then disaster strikes
They Say that no one in the world understands Einstein but 10 people, so dont worry if you think he confuses us
@KurdstanPlanetarium This is not really the right explanation. The problem is the video does not show Einstein's model correctly. It *says* "spacetime" but it's showing *space* only and the result is confusion. What should have been shown is the Sun extended in time as a cylinder with the small planet's trajectory shown as a helical line around the cylinder. This helix is the "straightest path" in spacetime, i.e. it's a trajectory of *free fall* - the planet "thinks" it's falling freely.
@JanPB well my friend the video is a graphical simpification of the problem regarding Space - Time curvature and does not need complications here
it does show however that the space-time is wrapped around any object within like the Sun shown here...also in short period of time that extension is not so obvious.
I mentioned it because I remember being confused by this "model" as a child. I couldn't tell what it was that was confusing and I assumed I was just not old enough to understand it. Some years later it hit me: what was confusing to me was that the "rubber sheet" model explains gravity by... gravity! It's circular: "the planet spins around the sun because it falls along the curved sheet" - but then this "falling" is caused by... gravity pulling everything under the rubber sheet down! It's wrong.
@mammothana said: "why doesnt the object go further towards the heavier object then?..why does it maintain the distance..and why does it revolve around it"
`> Are you honestly asking people why there is no friction in space?
"sometimes i feel like all einstein did was just confuse the whole world" Nah, he solved the 4 major questions of 19th century physics with one theory. His was a great insight in the nature of reality. I advise you try to understand it ;)
Is this not basicly the gravitational pull from the sun? Although, yes space time could be, "Bent" like showing, but is it not basically showing, the heavier the object, the more gravational pull it has? Im sorry if Im really wrong, I have only studied GCSE Physics, and currently looking to go on furthur in the field of Physics.
@dinomegrawr Theres no atmosphere nor oxygen, or anyother element. It has no gravity. So yes, its basicly, empty "space" lol. Only way I can put it from my mind to youtube.
@dinomegrawr Space we call it vacuum but in reality its not empty, its filled with dust and gas remnant of Super Nova explosions, that are there as nebula or dark matters, in fact its from the same materials that is birth place of Stars like ouro Sun, when coallesed by the power of another nearby star lights or super Novas explosions. just imagine the Eagle Nebula or Orion Nebula...
@dinomegrawr It is 4 dimentional. As humans we cannot understand what this means completely, but we know what the effect 4 dimensional space can have. We know that gravity isn't a force, and thus without space-time being something that can literally bend and contract and extend and move, planets would not orbit the sun, the sun would not orbit the galaxy etc etc
Speaking of curvature, I'm off to explore the space-time curvature of my trampoline. My obese friend would like to join me but i fear that such a large mass may create a black hole.
@gastvq1 Sorry but in Space there is no up, down and left and right...what do you see here supposed to for all the space surrounding the bigger object, think of it like the same model wrapping around the object as a sphere rather than 2-D model here, then every thing would be much clearer
@gastvq1 This is a 2-dimensional representation of 3-dimensional space (and 4-dimensional spacetime). We can't imagine the bending of 3-dimensional space but it is easy to do mathematically and equally represent it as a 2-dimensional model. That is why gravity is said to be of the 4th dimensional, attempted to be detected by the Large Hadron Collider.
My comments were based on taking gravitational time dilation at face value. If gravitational time dilation is replaced with gravitational length contraction/expansion, then showing grid-line distortions when viewed along the z-axis seems to make sense, the more I think about it. For one thing, it avoids accumulated clock discrepancies, but it does suggest gravitational variation in light-speed in the vacuum.
@CACBCCCU yes I take your point but remember here is simplicity thats matter, one does not need complication of the situation but simple elegant graphs that simply does the job...
@TobiramaSenju not quite Right, Space is space its not all empty as its filled with Primordial gas and dust left over from early history of formation of the Universe and its a physical property of Mass to attract other masses near-by and the way it does is shown by Albert Einstien that is bending the space-time around itself and that has been proved numerous times namely bendng of star rays passing by the sun time of Total Solar Eclipses
@KurdstanPlanetarium "Space is space its not all empty as its filled with Primordial gas and dust left over from early history of formation of the Universe"
Yes but what space is exactly.Space in itself I mean.
So that explains how mass bnds space-time.
But what is mass in itself.What is the cause of mass?
the curvature of space time comes up in the alien wow seti lines of data found in ancient math equations found hidden within the signal 6EQUJ5
theideagirlsays 13 hours ago
I have seen this metaphor around for years and it drives me fucking nuts. It seems to make sense except for one minor detail which is that space itself is a fucking 3D construct so when you have a planet following the curvature of a 2D object makes no fucking sense. What's more the motion would be far more complex because it is a 3D curvature in all directions!!
MindTrek00 14 hours ago
"On a body as large as the sun, it would be impossible to project a disturbance of this kind [e.g., radio broadcasts] to any considerable distance except along the surface. It might be inferred that I am alluding to the curvature of space supposed to exist according to the teachings of relativity, but nothing could be further from my mind. I hold that space cannot be curved, for the simple reason that it can have no properties. It might as well be said that God has properties. He has not, but o
bridgetroll9 4 days ago
There is no Time treshold whan object moves with speed of light, Time does not stop. Einstain was confused about many other things too.
SMILJANable 2 weeks ago in playlist Physics
Time than we can talk about overlaping Time. Finali in theory we can have object that did not move from point A, so means Time was not involved in object's movement. Since everithing moves the Time is necesary, if there is no Time there is no movement, and without movement Universe would not happen. Existance of Time is real factor. You can call it using diferent name, but you have to make definition about Time. Time is aplicable to te matter no mater what speed matter or object poseses. There
SMILJANable 2 weeks ago in playlist Physics
bilological change that we can not denie. In our Solar sistem Sun and planets did change position. During this year in entire Universe everything did move or did change wich includes micro and macro world. If year before 2010 body moves from point A to point B slover than sped of light, with speed of light or faster than speeed of light we can't ignore the fact that object was on the move for so called one year. We can have other object moving with same speed from point C to D during same
SMILJANable 2 weeks ago in playlist Physics
To 16 nowhereman. Old greeks and probably other old civilisations where avare of the fact that universe without Space,Ttime, Energy and Mass would not make sense. Means without Time Universe would not exist.Let's do little traveling experiment. If body moves through the Space from point A to point B one light year wich could be for people on Eart let's say jan. 1st 2010 until dec. 31st 2011. We as a humans did become older one year because during this year in our bodies did happen certain
SMILJANable 2 weeks ago in playlist Physics
in this video it shows only one plain of space time.how many are there?
shawnlayman92 3 weeks ago
I don't really get it...What power is it that makes so that the smaller ball (earth) does not collide with the larger ball (the sun) when it falls down in the pit (the curved space-time )...? What is it that makes so that our planet can pass the sun without getting closer ... and all other planets for that matter....anyone..?
lilillbill 4 weeks ago
@lilillbill The momentum of the planet as it orbits forward tends to carry it farther out in space, but the Sun tends to bring it back in to itself. These two factors cancel, causing the planet to orbit the Sun for billions of years.
SuperMagnetizer 1 week ago
But wouldn't the curvature of the "heavy object" be all around this object? The curvature would be all around and different directions?
16nowhereman 1 month ago
what is da composition of space curvatures other then layers of monopole particles
AnuSuroh 1 month ago
sraight line but in curved space lol !!!
Hirewithus1 1 month ago
that can't be explained. Things we knew, or we do not knew. It is so hard to physicists and astrophysicists after Newton to admit that in last hundred years they got lost in Space and in Time.
SMILJANable 1 month ago
not stop the Time. First at all time is natural phenomena not yet explained. We as a Humans trying to "hook" to Time our devises to determine our position in Space and Time, but our clocks are not the same as what is Time. I did not change my position regarding to Black halls and time in last 30 years, and this days i was reading that Steven Hawking said that black halls are not black as he first tot. All this crap from Einstein and Hawking is so abstract. There is nothing in the Universe
SMILJANable 1 month ago
@SMILJANable Time is an illusion. It is only a word invented by humans to communicate and bring meaning to pin-point a place in space. A better word for time is change. So, there is space and change and not space and time. If you travel at the speed of light you get no where because all you are doing is changing your position in space and you really didn't travel in time.
16nowhereman 1 month ago
completely wrong. Space is filed with moving particles wich are moving in wawes having diferent velocities. Light wawes do cary photons through space with light speed. Speed of the light is not fastest speed in the Universe. Experimenting with wireless transmission of el. energy Tesla was changing length of the electrical wawes, and doing so he was able to achieve speeds of electrons from infinite to the speed of light. Space is not bendable in no way. Also gravitation in Black holls does
SMILJANable 1 month ago
Merjoatlor,exactly, space is not curved. Objects in the space do move in curved lines, specifically in our Solar system. For example Earth is moving around Sun in elliptical orbit. Gravitational force of the Sun and Earth is INSUFFICIENT to keep Earth orbiting around Sun wich again has own trajectory within Milky way. To explain Earths movement around Sun Einstein had to "DIG TRENCH" around Sun stating that Earths gravitational pull curves or bends the space around the Sun. This is
SMILJANable 1 month ago
space is not curved
MERJOATLOR 1 month ago
Space is electrical pool. Electricity is force that governs the universe. Not knowing this Einstain and his followers had to invent 90+% of universe to make their story "complete". Result is that young students were forced in last 100 years to study wrong or fake science. Great damage was done to the humen kind, it is time to move on forgetting about modern Jesus Christ - Albert Einstein.
SMILJANable 2 months ago
Megahazard123, do me a favor, educate yourself.
SMILJANable 2 months ago
STRAIGHT LINE IN CURVED SPACE. THIS IS LIKE SAING THAT CIRCUMFERENCE IS STRAIGHT LINE. WOW, THIS GUYS ARE SELING TO PEOPLE THIS STORIES MAKING REAL MONEY.
SMILJANable 2 months ago
@SMILJANable I AM USING ALL CAPS SO YOU KNOW THAT WHEN I AM CALLING YOU A FUCKING MORON YOU KNOW I AM SERIOUS
MegaHazzer123 2 months ago
Electrical force wich fills the space keeps universe in the order that we know. Curved space is other Einstein's stupidity. Einstein did not know more than basic geometry, and this is not enough to explain Universe.
SMILJANable 2 months ago
This would also suggest that time is also effected by this gravity, seeing that if effects space; it also effects time. Am I right?
KinaNafasi 3 months ago
@KinaNafasi Base on Einstein Theory Space-Time contium time and space are but one, so based on that yes Time will be affected too..time is relative remember that, and is changing based on Mas, velocity so different planets and stars have different frame of space-time than ours...
Enjoy reading Theory of Relativity of Albert Einstein
KurdstanPlanetarium 3 months ago
@KurdstanPlanetarium What about the theory (a higgless one) about closed volumes curve space time and its the pressure around this closed volume that determines the mass? This would explain gravity and the faster than light nutrino
HardGravy 1 month ago
@HardGravy I don't think the idea of closed space is a right one, since space is round but has no limit, as much as Earth, you can go round the Earth without seen something called the edge, yet is curved around itself making spherical shape...beside the streaching Space Time fabric is gradual all around, it does not come to an abrupt end by the closed space as you suggest !!
KurdstanPlanetarium 1 month ago
@KurdstanPlanetarium You don't understand what I meant.. not closed space, but closed volumes. An atom is composed mostly of open space right? A vacuum of a sort (vacuum being no particles are present). An element that has twice the volume (at the atomic level, so if you got rid of all the open space) has twice the mass. twice as many protons, neutrons, electons=twice the mass correct? Well lets consider the possibility that spacetime curves around this CLOSED VOLUME -- higgs-boson(dot)org
HardGravy 1 month ago
@KinaNafasi Yes
QMPhilosophe 2 weeks ago
Wait! So you mean Space itself is curved by the mass of the sun???? The planet is really going in a straight line? wow. So in once sence gravity doesn't pull a planet. it curves the space which curves the path of the planet????
KinaNafasi 3 months ago
I thought objects revolved around other objects because the centripetal force was equivilant to the force of gravity. 0_o
OwnYouInPk 3 months ago
there are different types of times and I would explain:
-1 linear time that measures all time, let's call it God time.
- bubbles of time, which is personal for objects like planets or people, time goes faster or slower depending of the object or the observer - The right now moment, this moment exist right now, and it exist 1 million years ago right now, this moment transcends 3dimensional, it exist at all times and at all places, past does not get destroy, and future already exist.
1800levso 3 months ago
two questions 1) planets orbit in ellipses not circles, does the theory explain that? 2) What is mass?
derfilmmacher 3 months ago
@derfilmmacher one thing do remember this is a very simple diagram reprsentation of Sapce -Time continum, and as such one should not expect too much complication as the whole subject is a mind bogling matter...here is an oportunity for you and every one else to enjoy simplicity.
yes planets, moons and every objects in Space and even on sub atomic particles are in elliptical orbits .
Mass can be defined as a quantitive measure of the resistance an object has to change in its velocity.
KurdstanPlanetarium 3 months ago
ACCORDING TO THIS SPACE IS ONLY CURVED IN ONE DIRECTION. THERE ARE MORE THAN ONE DIRECTION. IF FACT I THINK THE SUN WOULD DISPLACE THE SPACE AND ACTUALLY PUSH THINGS AWAY, NOT ATTRACT TO CAUSE ORIBIT
billyandtherockets 3 months ago
@billyandtherockets you're an idiot who obviously doesn't have a clue. this is a diagram representation showing one plane through space (using your argument you could just as easily say its wrong cause there are no blue grids in the sky. IT'S A DIAGRAM!). you need to use your brain to consider the effect at all possible points in all possible planes, ie 3 dimensions - which you cannot represent as a diagram as the screen would be entirely full of overlapping blue grid lines at every pixel. fool.
replyandyousuckballs 3 months ago
AND IF YOU ARE INVERTED?
billyandtherockets 3 months ago
Spacetime is limited, and so was its predecessor (The concept of gravity attributed to Newton) - Both are based on the perceived effects, which means that the immediate cause or the deeper causes have not been truly shown. But they are great contributions relatively speaking.
jjojjorge 4 months ago
kewl
CleezyClark 4 months ago
Anyone know where to watch the full video? would really help...
pobthiti 4 months ago
@pobthiti check out my channel, I have all other parts here too...
KurdstanPlanetarium 4 months ago
@KurdstanPlanetarium I was not able to find the rest of this video documentary, I am working on an research paper about space-time curvature... do you have anymore videos you think might be useful? ( I Looked)
thank you so much.
pobthiti 4 months ago
@pobthiti check out this video :
Gravity - From Newton to Einstein - The Elegant Universe
KurdstanPlanetarium 4 months ago
according to dumb human scientists space is not just measure of distance between particles but it's a giant trampoline :'D :D
ZeroHumans 4 months ago
there's no such thing as "time" except the way particles constantly change in space.. things vibrate and change the way they are arranged and how they look in space all the time, so time is just illusion except in crazy human scientist minds. Einstein was an idiot.. "c" is the only thing in the universe that doesn't change, theory of "relativity" what an idiot.
ZeroHumans 4 months ago
@ZeroHumans YES HE MANAGED TO FOOL A LOT OF PEOPLE. TIME IS AN ABSTRACT CONCEPT AND NOT A PHYSICAL THING=NO SPACE TIME
billyandtherockets 3 months ago
This is so true. Space as we know it is 3d it bends into gravity making time shorter nearer the mass and longer the further away fromvthe gravitional field
Hence time travel in its simplest form.c
tam88677 5 months ago
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standingontruth1 5 months ago
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@KurdstanPlanetarium
Please Please answer to my questions
How we found the speed of light
How can we see a Atom
I don't understand how people created the structures of Atoms
Please don't make fun of this.Please answer
ilifeform 5 months ago
Comment removed
ilifeform 5 months ago
Oh,, they say the sunami in India 2004 tore a hole in the space/time continuum ...wsy? What does this mean, shortening of days, a wobble in the Earth?
ConstanceHelwig 6 months ago
@ConstanceHelwig Tsunami of Boxing day was the result of under ocean Earthquake that caused a 100 km wide area to rise about 20 m, and the shock waves spread throughout the regions, nothing to do with Space Time Contiuum. a shortening of days meaning days gets shorter, but on Earth the days getting longer in fact by about an hour every 200 million years. Wobbling is a result of axis of rotaion, the axis while every 26000 years make copleter rotation it also changes in size from 21 -25 degrees.
KurdstanPlanetarium 6 months ago
Great Maya work!!! Not to mention the info!:)
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vksonakia 6 months ago
0:27 LOL WTF??
Muraz72 6 months ago
This is a fucking lie!
The space around that object won't bend around the object, because it's a 3-d surrounding. You'll break your brains trying to fit those two facts together.
Here's how it really works, but mute the sound, it contributes nothing:
watch?v=DbhuRcmSkMg
Yezpahr 6 months ago
@Yezpahr Both of the videos are correct, this is just very slightly more simplified. And yes space does bend.
9hello123 6 months ago
@9hello123
There is a slight difference between "around|" and "towards".
Space/time bends towards heavy objects, not around.
Yezpahr 6 months ago
@Yezpahr You've misinterpreted the video, it's meant to be representing it being bent towards it. It's just difficult to represent that in 2d.
9hello123 6 months ago
@9hello123
Bending space "around" something is completely different than bending space "towards" it.
It's not just a change of perspective, but a flat out lie.
2D doesn't work in space. If we try to animate it, our brain will break itself trying to fix the contradictions it sees.
Scientists block our brain from understanding it because nothing could fall up or down in this 2d platform.
And this model rules out ANY other source of gravity. As if sth orbits only 1 thing at a time.
Yezpahr 6 months ago
@Yezpahr first its nice to use a polite language in a science related subjects, cos it does shows your level of understanding.
second it breaks your brains only, as you have to understand this is a simplified and easy version of a a very complicated Space-Time continuum.
Bending of space according Einstein General Theory of Relativity is pridicted by observing Solar Eclipses and that proof was enough to make Einstein to be famous in a time when everyone laughed at him as you do here.
KurdstanPlanetarium 6 months ago 2
@KurdstanPlanetarium
I know what you mean about it being explained in a simple way.
But, the whole 2d perspective has something sinister to it, because it doesn't explain how something is drawn towards it.
In the 2d perspective, a third/fourth object would only be able to be on the same surface as the 2nd.
While in fact, everything around it is drawn towards the heavy object.
Look at the video I suggested, it will immediately account for ALL objects in any place around the object.
2D does not.
Yezpahr 6 months ago
@Yezpahr What part of this being a simplification do you not understand?
9hello123 6 months ago
@9hello123
Imagine your feet are being pushed in a shoe that's exactly your size.
If your still growing, your toes will bend inwards and not grow normally over the years.
Just like the brain won't understand anything if it's forced to watch Dora the Explorer all day instead of really playing outside.
Yezpahr 6 months ago
@Yezpahr You're beyond reason.
9hello123 6 months ago
@9hello123
Btw, I pointed my first post at others, who didn't understand THIS 2D-shape.
These simple ways of explaining stuff will prevent people from fully using their brains.
And it's like the toes in a shoe that I first explained. It's the SIMPLE people that don't understand the 2D-shape.
And that's because their brains are not challenged at all.
Yezpahr 6 months ago
Comment removed
Yezpahr 6 months ago
@KurdstanPlanetarium in which country is this Kurdistan Planetarium in?
bbphnix 6 months ago
NO FUCKING SENSE AT ALL
MrJavierpr 6 months ago
If spacetime is a 4-dimensional fabric then how can it be represented by a 2-dimensional fabric while a 3-dimensional object is represented by a 3-dimensional object. Also this model shows a pull towards the BOTTOM not the CENTER of an object. I'm not trying to be critical but I just have never quite understood this gravitational model
AntiMatterWave 6 months ago
@AntiMatterWave well, to show a 4 D model is impossible, what you see here as 2 D imaine it all around the object ther central body. its what happen all around that body in all direction the same as you see in this model and as you said shows towards the bottom, but in reality its all around and that cant be shown on a model like this...
thanx
KurdstanPlanetarium 6 months ago
@KurdstanPlanetarium So when you add an object it curves the fabric of spacetime, is the depth of the curve at a point representing the magnitude of the effect of gravity then?
AntiMatterWave 6 months ago
@AntiMatterWave thats more likely but the curvature at the point representing the magnitude of the effect of the Mass, the havier the object (i.e more massive), the more curved the fabric of Space-Time continum will be.
and remember its all around the object not just what you see here as 2 D.
KurdstanPlanetarium 6 months ago
does it truly resemble a 2 dimensional field? or do the masses bend time 3 dimensionally all around the mass?
SkateKanata 7 months ago
@SkateKanata of course it bends 3 dimensionally all around the mass, it is impossilbe to show that graphically.
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TheServiceWeb 7 months ago
@lilmizzscatterbrain
That is a good question! Think of a straight line as the "natura and obviousl" path between two points in a given geometry. A straight line in a two dimensional flat (Euclidian) space (the type of geometry we learn before we go to univerity and complicate everything) is the "ruler" straight line you are refering at (I think). A straight line on the surface of curved space (a sphere) is a line that follows the curvature of the geometry at hand.
planetmonger 7 months ago
@lilmizzscatterbrain do you mean the rubber sheet or the object that used as a planet?
as for the rubber sheet that represnt curved space, they are not straight lines at all when heavy objects placed in them, the same way the Sun bends the Space-Time that beding depends on the size of the object places in, giant stars bend more than smaller ones and the planets tends to follow those curvatures..
KurdstanPlanetarium 7 months ago
I like the Doctors explanation of time better:
"People think that time is a strict progression of cause to effect but actually, from a non-linear, non-subjective viewpoint, it's more like a big ball of wibbly-wobbly, timey-wimey...stuff."
ChildOfTheDivine 7 months ago
A straight line in curved space ? I beg your pardon.
simpsonmark 10 months ago
here's my question: If this analogy is correct, then why wouldn't the planet eventually get sucked in completely to the Sun? If that trampoline like sheet was curved, wouldn't the planet, just like a marble on a trampoline, as it slowed, fall into the center? Put in another way, why isn't the Earth slowing down and getting closer to the sun?
JBeezie428 10 months ago
@JBeezie428 for the start, this analogy is to simplyfy a mind bogling subject of Space - Time and General Theory of Relativity, so dont take it for granted, however saying that, and just to answer your question, the planet has its own velocity that balances the pull of the Sun, and incases even surpas it, as the case of the Moon. you know that the Moon departs Earth by a rate of an Inch every year and one day it leaves Earth forever, by then Total Solar Eclipe will be a thing of the past.
KurdstanPlanetarium 10 months ago
@JBeezie428 dont think of it as just a 'blanket', its like the blanket they show but in infinite amount of them in 3d space. Its much easer to understand then to explain but just look, marvel, this is how the human mind trys to comprehend reality :)
Streety101101 10 months ago
@JBeezie428 the curvature of spacetime EXPLAINS gravity and therefore therefore this relation does not INCLUDE gravity. more importantly, the earth does not move in a circular path, it moves in an elliptical path, and it is in fact moving fastest when it is closest to the sun (remembering keplers laws regarding the period of planetary revolutions). this diagram isnt taking any of that into account its merely demonstrating einsteins link between relativity and classical mechanics.
yakjon 10 months ago
@JBeezie428 Your idea is correct, the only difference between the earth orbiting the sun and a marble orbiting some object on a sheet except for the lack of one extra dimension is that the marble i slowed down due to air resistance and friction. But in space there is no air, and the sheet has no friction (as far as we know) and that causes the earth to stay at the same speed in its orbit and therefore it is forever falling towards the sun but never reaching it.
Tobbin92 9 months ago
@JBeezie428 You can think about it like trying to make a circle with a piece of string and a nail, one person holding the nail, another holding the extended string. The one holding the string will attempt to go in a straight line, but is bounded by the twin. Spacetime is curved under mass like the sun, but the velocity of the earth is great enough to keep it in balance with the Pull of gravity. The earth is actually falling continually towards the sun, but fast enough to maintain it's orbit.
xXGoDxiSxdEaDx666Xx 9 months ago
@JBeezie428 The simple answer you are looking for is this. The planet, before it is caught in the gravitational field of the sun, is moving uninterupted. In space, there is almost nothing to stop this movement, so this "planetin motion will stay in motion." When it hits the gravitational pull of the sun, a tug-of-war insues with the planet trying to move in a straight line while the sun is pulling it in, so a balancing point is eventually reached between these two pulls, resulting in an orbit.
ApocZak 8 months ago
@JBeezie428 its just a representation. space time is every where in every direction around us not like a 2D sheet shown here. They just use that model to give people a clear indication of what it does
geostigma23 7 months ago
@JBeezie428 No because the effect you are talking about is created by the Earths gravity.
xsmopsis 7 months ago
This is a very bad visualization of spacetime curvature. The model here is very stupid, for the heavy object bends the surface *bacause of* gravity; you can't explain gravity in terms of gravity, for that's not an explanation.
This is not how spacetime bends according to the theory.
Spacetime doesn't bend "under" the object; it bends *towards* the object.
hasenj 10 months ago
@hasenj for the start this is an explanation of Einstien's General Theory of Relativity not Newtonian Gravity, what you see here is how Einstien thought of Space-Time Continum bending around objects in space, his explantion does not depends on Gravity as force but as wave like ripples in the fabric of Space-Time.
what you see here is just a simple explanation, so dont take it as simple as you see here, for the Space-Time does not bend under an object but all around it in the same manner.
KurdstanPlanetarium 10 months ago
@hasenj my comment was about the video itself .. the video does not represent the general relativity model of spacetime curvature. The video explains gravity in terms of gravity. Why does a heavy ball bend a trampoline? Because of gravity, of course!
hasenj 10 months ago
this seems really wrong, how does the presence of mass warp space in the first place?
antizero100 10 months ago
We live in an Electric Universe, not a gravitational universe.
When are we going to realise that Einstein was wrong about gravity. Black Holes, Neutron Stars, dark matter, dark energy and all this other conjured up stuff do not exist. We need to stop wasting money searching for new particles and forces invented by mathematicians. A good measure of a theory is its ability to predict the outcome of new observations or explain them without introducing additional tailor-made concepts.
vlatin1 11 months ago
jesus... it's pretty difficult to understand...
Rhosnesni 11 months ago
@TheLOZmaster2010 @ai1888
The planet-like object moves in an ELLIPTICAL path because its lateral speed/momentum is just right. If you watch an animation with a grid, you will notice that every line bends a little bit toward the mass in the center (but not this animation). Here are two animations I think illustrate the idea a bit more accurately
Here's a 2D animation.pause this video at the 0:37 mark
watch?v=v7jJnOQJZzc&feature=related
Here's a 3D animation
watch?v=DbhuRcmSkMg&feature=related
KayBeeEee1983 11 months ago
Thats so our mind can comprehend a curve in 3-D.
FreudianComplex 11 months ago
@FreudianComplex In this animation, the lines aren't curving toward the mass in the center. They all stay parallel to it.
KayBeeEee1983 11 months ago
How is the planet following a straight line? You can see the straight lines of the graph paper and they don't follow the distortions that the sun creates.
KayBeeEee1983 1 year ago
@KayBeeEee1983 A very good point, thanx... but remember its a model to explain mind bogling case of Theory of Einstein in a simple manner, so dont take it litterally but do undestand that Planets want to travel in straight lines if they are not humpered by distortion in the Space-Time arund them,(Newton's Gravity)...
KurdstanPlanetarium 1 year ago
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@KurdstanPlanetarium My question wasn't rhetorical. I don't quite understand gravity. I understand the theory that mass distorts the fabric of spacetime, but I don't understand how that causes what we observe as attraction. These two dimensional illustrations don't help me because in these demonstrations, it's 3D gravity distorting a 2D plane. Take away the 3D gravity, and the balls wouldn't distort the plane anymore.
KayBeeEee1983 1 year ago
@KurdstanPlanetarium The lines should curve toward the mass in the center, not down (parallel to the center).
KayBeeEee1983 1 year ago
@KayBeeEee1983 its just a illastration, real space-time isnt made of graph paper lol.
FreudianComplex 11 months ago
@FreudianComplex It's an inaccurate illustration. Why have the lines if they are meaningless?
KayBeeEee1983 11 months ago
@KayBeeEee1983 The lines only there to illustrate the curvature of Space-Time, without it how to show it, we have to bring a solid surface to do that and by that Space itself will be meaningless !!
KurdstanPlanetarium 11 months ago
@KurdstanPlanetarium The typical analogy is a trampoline surface. If the creator of this animation can make shadows, he/she doesn't need grid lines.
KayBeeEee1983 11 months ago
SPACE IS NOT 2D!!!
7150285 1 year ago
@7150285 How else were they going to picture an extradimensional deformation? Human brains are miserable at picturing 4D space. They compressed the 3 dimensions into 2, to protect your sanity.
StrikaAmaru 1 year ago
@StrikaAmaru I don't think we can ever imagine anything more than 3D....o well, the 4th dimension must be time then
7150285 1 year ago
@7150285 No, time is separate; the dimension in which the deformation occurs is another spatial dimension... just like in this video, you have a 2D surface that stretches on a 3rd axis; if you live in the 2d space and you'd start measuring things, you start noticing weird things around that large mass; then you'd invent Riemannian geometry to describe it, because Euclidean doesn't get you anywhere, and thinking in 3D is impossible, the brain never evolved that ability :)
StrikaAmaru 1 year ago
@StrikaAmaru i dont know how scientist thinks our universe is 11D though...
7150285 1 year ago
@7150285 Something to do with string theory and mathematical models that would give even college grads nosebleeds :)
The closest thing to an explanation I can recommend is a BBC Horizon documentary from 2005 (I think) titled "Parallel Universes". It starts off weird, but explains how they got to 11 dimensions starting with part 2.
Part 1 is here: ?v=6R14oA-RI-o
StrikaAmaru 1 year ago
@StrikaAmaru 11 dimensions is 10 dimensions of space and 1 dimension of time...but i personally dont believe in string theory though, after all, its only a theory
7150285 11 months ago
@7150285 "dont believe in string theory though, after all, its only a theory"
I feel compelled to correct a common misconception: theory for science isn't the same as theory for the average Joe. What Joe would call a theory is in science a hypothesis at best. A sci!theory describes the mechanisms by which an event occurs, and is supported by observations made, and by predictions it makes.
Observation (or predictions) that don't match up lead to the theory being refined. Re: gravity and Mercury
StrikaAmaru 11 months ago
@StrikaAmaru This has nothing to do with this, but I can figure this out in my head in about ten seconds, and im in my sophomore year of high school!
TheLOZmaster2010 11 months ago
@7150285 The human imagination has no bearing on reality.
KayBeeEee1983 1 year ago
@7150285 It's also impossible to illustrate 4D space.
KayBeeEee1983 1 year ago
This is the explanation of gravity
TheFlyingTiger129 1 year ago
most ppl dont think space and time goes together.....they'll think time as a different 4th dimension
7150285 1 year ago
Why doesnt the planet roll around in concentric circles eventually towards the center of the curve??
ai1888 1 year ago
@ai1888 well the planets dont fall towards the centre, but on the contrary they do want to escape in a straight line but the curvature of the Space-Time created by the Sun (Newtonian force of Gravity), makes them bend and follow an ecliptical orbit around the Sun.
KurdstanPlanetarium 1 year ago
@KurdstanPlanetarium Hmmm. What causes the planets to move in a straight line in the first place??
ai1888 1 year ago
@ai1888 a good question..well the planets own veloctiies ares what make them move in a straight line, but then are bendes by the curvature of Space - Time, and that action is "balances" by the inward attraction. in most cases the word balance is relative, as in the case of our Moon, the velocity of the Moon makes it gettion away from the Earth by as much as 3 cm in a year, one day will escape forever. and we loose our Moon, one consequence of that we wont have Total Solar Eclipses any more..
KurdstanPlanetarium 1 year ago
@ai1888
For objects to move in a straight line (velocity):
1st, the attraction of atoms/matters compress to each other
2nd, which are compress hard enough to cause heat to ignite an explosion (usually an explosion of a galaxy.)
3rd, this explosion produce a wave of energy that push anything away from it in a straight line
4th, it'll keep on moving until something acts upon it (usually a sun).
j2anime 1 year ago
@ai1888 gravity bends the straight line the planet-like object into what looks like a circular path but- My GOD! this is hard to explain, even for me. Ummmmm... AH! The planet IS following a straight line, but only in curved SPACE-TIME
TheLOZmaster2010 11 months ago
34 seconds to explain The curvature of Space-Time ?......hmmm maybe I should read a book.
seekhtruth 1 year ago
- while including the quotation marks, look in Google with "On Relativity and Absolute space, time, velocity"
- there you can read about critiques on Einstein's thought experiment regarding the relativity of simultaneity, the Lorentz contraction, the Michelson and Morley experiment and the light clock.
- a 10 minutes introduction to that website is also shown in a YouTube video. Search at YouTube using those 5 keywords in a row : Einstein train simultaneity thought experiment
ebrauns789 1 year ago
How can emptiness curve?
skytrooper1980 1 year ago
@skytrooper1980 its not curving and its the space itself that is fluxing
DrPicklesify 1 year ago
@skytrooper1980 You should know by now nothing is truly empty.
StrikaAmaru 1 year ago
@StrikaAmaru wrong: true emptiness is the space between the necleus and the electron that orbits like in a hydrogen atom
sizzlerjoe1 1 year ago
@sizzlerjoe1 But you still have an electron and a nucleus.
Jokes aside, I was referring to quantum foam, which does exist everywhere. That's why nothing is truly empty, there are virtual particles popping around and making even intergalactic space a little hotter than absolute 0. Even if you wouldn't have random photons scattering from galaxies, there is no place in the Universe, no matter how small, that is true vacuum.
StrikaAmaru 1 year ago
I would think that the curvature of actual space would be measured by how much light's path is affected and not by the movement of masses influenced by gravitational attraction.
pocoapoco2 1 year ago
@pocoapoco2 to measure yes, but this is about the curvature of Space-Time itself, and why it curves..
KurdstanPlanetarium 1 year ago
@KurdstanPlanetarium Then either the planet isn't really following a stright line because even a mass as heavy as a planet bends space very very little-the force of gravity would be more responsible for making the planet follow a curved path, OR the force of gravity is much much stronger than we think it is. However the force isn't attraction between two masses. It is instead the attraction of mass to the true center of the universe- the center being the center of a hyper sphere.
pocoapoco2 1 year ago
so why do planets orbit in an oval
chrisiare 1 year ago
@chrisiare I think Keplers Laws and Newton's Law of Universal Gravitation explains that...
KurdstanPlanetarium 1 year ago
@chrisiare Also because planets are not perfectly sphere.
3xxiled 1 year ago
@chrisiare
So if a planet passes closer to another planet, it will go faster, because there is more force. As it reaches farther away, it will eventually slow to a farther point, then "fall" back down, gather speed, and slow again.
The sections of the orbit in which the object gains speed are longer than the slower sections, meaning it is not a perfect circle, but rather an ellipse.
TerminalToast 1 year ago
why doesnt the object go further towards the heavier object then?..why does it maintain the distance..and why does it revolve around it...sometimes i feel like all einstein did was just confuse the whole world
mammothana 1 year ago
@mammothana Good question: there is a balance between the gravitational attraction and Cetrifugical forces that keeps the smaller oject i.e the planet stay in a stabel orbit...when that stability tiped off to one side then disaster strikes
They Say that no one in the world understands Einstein but 10 people, so dont worry if you think he confuses us
KurdstanPlanetarium 1 year ago
@KurdstanPlanetarium This is not really the right explanation. The problem is the video does not show Einstein's model correctly. It *says* "spacetime" but it's showing *space* only and the result is confusion. What should have been shown is the Sun extended in time as a cylinder with the small planet's trajectory shown as a helical line around the cylinder. This helix is the "straightest path" in spacetime, i.e. it's a trajectory of *free fall* - the planet "thinks" it's falling freely.
JanPB 1 year ago
@JanPB well my friend the video is a graphical simpification of the problem regarding Space - Time curvature and does not need complications here
it does show however that the space-time is wrapped around any object within like the Sun shown here...also in short period of time that extension is not so obvious.
Thanx for pointing out, appreciate any feed back
KurdstanPlanetarium 1 year ago
I mentioned it because I remember being confused by this "model" as a child. I couldn't tell what it was that was confusing and I assumed I was just not old enough to understand it. Some years later it hit me: what was confusing to me was that the "rubber sheet" model explains gravity by... gravity! It's circular: "the planet spins around the sun because it falls along the curved sheet" - but then this "falling" is caused by... gravity pulling everything under the rubber sheet down! It's wrong.
JanPB 1 year ago
This has been flagged as spam show
@mammothana said: "why doesnt the object go further towards the heavier object then?..why does it maintain the distance..and why does it revolve around it"
`> Are you honestly asking people why there is no friction in space?
"sometimes i feel like all einstein did was just confuse the whole world" Nah, he solved the 4 major questions of 19th century physics with one theory. His was a great insight in the nature of reality. I advise you try to understand it ;)
StrikaAmaru 1 year ago
holy fucking shit my brain just exploded in apiphany jizz
blahdob 1 year ago
Is this not basicly the gravitational pull from the sun? Although, yes space time could be, "Bent" like showing, but is it not basically showing, the heavier the object, the more gravational pull it has? Im sorry if Im really wrong, I have only studied GCSE Physics, and currently looking to go on furthur in the field of Physics.
wehatevalve 1 year ago
Space is a vacuum. Its literally nothing.
dinomegrawr 1 year ago
@dinomegrawr Theres no atmosphere nor oxygen, or anyother element. It has no gravity. So yes, its basicly, empty "space" lol. Only way I can put it from my mind to youtube.
wehatevalve 1 year ago
@dinomegrawr Space we call it vacuum but in reality its not empty, its filled with dust and gas remnant of Super Nova explosions, that are there as nebula or dark matters, in fact its from the same materials that is birth place of Stars like ouro Sun, when coallesed by the power of another nearby star lights or super Novas explosions. just imagine the Eagle Nebula or Orion Nebula...
KurdstanPlanetarium 1 year ago
@dinomegrawr It is 4 dimentional. As humans we cannot understand what this means completely, but we know what the effect 4 dimensional space can have. We know that gravity isn't a force, and thus without space-time being something that can literally bend and contract and extend and move, planets would not orbit the sun, the sun would not orbit the galaxy etc etc
MilitantBlackGuy1 1 year ago
Speaking of curvature, I'm off to explore the space-time curvature of my trampoline. My obese friend would like to join me but i fear that such a large mass may create a black hole.
sekwah09 1 year ago
@sekwah09 nice experiment, but if your friend does not make a black hole then you be a planet orbitng his large Mass maybe 4ever...
KurdstanPlanetarium 1 year ago
@KurdstanPlanetarium
Thank you for your comment; it's good to unleash a bit of humour time to time.
sekwah09 1 year ago
I get it. But, what about an object that approaches from the bottom? According to this model, the object from below would be repelled. So ... ?
gastvq1 1 year ago
@gastvq1 Sorry but in Space there is no up, down and left and right...what do you see here supposed to for all the space surrounding the bigger object, think of it like the same model wrapping around the object as a sphere rather than 2-D model here, then every thing would be much clearer
KurdstanPlanetarium 1 year ago
@gastvq1 This is a 2-dimensional representation of 3-dimensional space (and 4-dimensional spacetime). We can't imagine the bending of 3-dimensional space but it is easy to do mathematically and equally represent it as a 2-dimensional model. That is why gravity is said to be of the 4th dimensional, attempted to be detected by the Large Hadron Collider.
HaveFaithInScience 1 year ago
My comments were based on taking gravitational time dilation at face value. If gravitational time dilation is replaced with gravitational length contraction/expansion, then showing grid-line distortions when viewed along the z-axis seems to make sense, the more I think about it. For one thing, it avoids accumulated clock discrepancies, but it does suggest gravitational variation in light-speed in the vacuum.
CACBCCCU 1 year ago
@CACBCCCU yes I take your point but remember here is simplicity thats matter, one does not need complication of the situation but simple elegant graphs that simply does the job...
KurdstanPlanetarium 1 year ago
@KurdstanPlanetarium Mass bends space/time and the curve is gravity.Right?
TobiramaSenju 1 year ago
@TobiramaSenju Right...
KurdstanPlanetarium 1 year ago
@KurdstanPlanetarium But no one knows what space is and what the cause of mass is and how it bends space/time continum.Right?
TobiramaSenju 1 year ago
@TobiramaSenju not quite Right, Space is space its not all empty as its filled with Primordial gas and dust left over from early history of formation of the Universe and its a physical property of Mass to attract other masses near-by and the way it does is shown by Albert Einstien that is bending the space-time around itself and that has been proved numerous times namely bendng of star rays passing by the sun time of Total Solar Eclipses
KurdstanPlanetarium 1 year ago
This has been flagged as spam show
@KurdstanPlanetarium "Space is space its not all empty as its filled with Primordial gas and dust left over from early history of formation of the Universe"
Yes but what space is exactly.Space in itself I mean.
So that explains how mass bnds space-time.
But what is mass in itself.What is the cause of mass?
TobiramaSenju