what is spacetime made of

Spacetime diagrams can be used to visualize relativistic effects, such as why different observers perceive where and when events occur differently. If gravity can be defined as the curvature of space rather than a force of attraction, why does not a bullet shot out of a gun, say perpendicular to the Earth's crust, and a ball thrown by me on the same trajectory (but obviously at a much slower speed) follow the same curve? The fabric of space time was proposed by Albert Einstein in 1916 in his theory of General Relativity. What time itself is actually made of is a much easier question to answer because time itself does not objectively exist physically in the first place, as I have already discussed many many times on the forum. I found an answer from astronomy.stackexchange.comgravity - What is spacetime 'made' of? For example, the concept of spacetime (in context of the General Theory of Relativity) helps you to predict that the gravitational lensing exists. 'onresize' : 'resize'; This “atomic” approach to the problem of quantum gravity may even throw light on the ancient philosophical question of why we experience time passing. The 4D spacetime continuum is perfect. document.getElementById('heightyyy').innerText = yyy; and Why does the cosmological “constant”, Lambda, have the value it has? If it was made of "nothing" it could'be bent, right? What are molecules made of? addEvent(event, function(){ getum(); }); Physicists are like the annoying child who keeps asking questions: What is this piece of chalk made of? In other words it is something that exists in human brain, to help that brain exactly predict the future experiences out of previous experiences. Spacetime bends, warps and ripples and carries energy. Spacetime bends, warps and ripples and carries energy. The only way you'd ever accelerate would be … if (xxx > 850){document.getElementById('gettumxxx').style.width = xxx - 280 + 'px';} The particle itself would be just the grey threads in the picture (no color and a lot thinner of course). Philosophy of space and time is the branch of philosophy concerned with the issues surrounding the ontology, epistemology, and character of space and time.While such ideas have been central to philosophy from its inception, the philosophy of space and time was both an inspiration for and a central aspect of early analytic philosophy.The subject focuses on a number of basic issues, … document.getElementById('widthxxx').innerText = xxx; Does it have a sense to ask what is Spacetime made of? Space-time must be made out of … Space is a vacuum, but it is far from empty. In physics, spacetime is any mathematical model which fuses the three dimensions of space and the one dimension of time into a single four-dimensional manifold. ddd = document, Oxford //document.getElementsByClassName('style1').style.fontSize = new_size+'px'; Everything in the Universe is made from one type of thread. Combining these two ideas helped cosmology to understand how the universe works on … { The particles in the universe don’t just all do their own thing; they follow a definite set of common law… Clarendon Laboratory Spacetime is most assuredly made of something as it is not a void and, by General Relativity, shown to be inhomogeneous: curvature over here in this piece of spacetime can be different from the curvature in that piece over there, so it has position-dependent properties. So it doesn't exist? if(navigator.appName != "Microsoft Internet Explorer"){}// NOVA made a documentary sequel to the popular Elegant Universe adaptation based on this book The Fabric of the Cosmos and with the same name. Your question is more correctly stated as “What is spacetime made of?” Physicists currently call empty spacetime as the vacuum, but this “space” has properties so how does it come to possess these properties? //document.getElementsByClassName('style1').style.fontSize = new_size+'px'; Jolie becomes trending topic after dad's pro-Trump rant. This fabric is continuous, smooth, and gets curved and deformed by the presence of matter and energy. OX1 3PU, Rudolf Peierls Centre for Theoretical Physics, Introduction to Machine learning for Physicists, Oxford Master Course in Mathematical and Theoretical Physics, © 2020 The University of Oxford Department of Physics. Prior to his pioneering work, scientists had two separate theories to explain physical phenomena: Isaac Newton's laws of physics described the motion of massive objects, while James Clerk Maxwell's electromagnetic models explained the properties of light, according to NASA. Weeklymisleadia say's it's a mathematical model. What are atoms made of? People talk about space time like it is a rubbery fabric. Space-time, in physical science, single concept that recognizes the union of space and time, first proposed by the mathematician Hermann Minkowski in 1908 as a way to reformulate Albert Einstein ’s special theory of relativity (1905). document.getElementById('whitebox').style.fontSize = new_size+'px'; The spacetime curvature around any massive object is determined by the combination of mass and distance from the center-of-mass. This four-dimensional continuum is known as Minkowski space. var event = window.attachEvent ? //if (xxx > 420){document.getElementById('spacer').style.width = xxx - 420 + 'px';} It exists. Originally posted by FZ+ Yes you can, so long as you continue the analogy and see the earth as a 2 dimensional non-euclidean surface. The answer is that empty spacetime (or the vacuum) is made of … Space-time is a lattice type thread particle network in space. It is best to learn the math. document.getElementById('redbox').style.fontSize = red_size+'px'; Is it made of energy? //document.getElementsByClassName('style1').style.fontSize = new_size+'px'; Because we know: Spacetime can be bent, which results in gravity and gravitational lensing effects etc. What are molecules made of? Does it have a weight, charge, mass, a sea of quarks, anything? He postulated that gravity distorts space so that objects including light from stars must follow a curved path around large bodies of gravity such as stars and black holes. What physical space itself is actually made of is of course a very interesting question.  //alert(document.referrer) Since the beginning of the 20th Century, we have had, in addition to matter, another “something” to ask questions about: spacetime. //window.addEventListener('resize', function(event){ getum(); }); Spacetime is made up of position and time coordinates. and so on. Related: Newton's Laws of Motion But experimen… - Astronomy Stack ExchangeSpace-time is not "made" of anything, it is merely a medium or coordinate system. document.getElementById('whitebox').style.lineHeight = new_size; READ THIS FIRST ---> one inch equation: TL = mc^2, gravitation without mass - the curve ball, Reconciliation of Gravity and Quantum Mechanics, Reconciliation of Newton - Tesla - GR - QM, NO EXPANSION - NO DARK ENERGY - NO SINGULARITIES, You are 3-D but really 1-D but really 3-D. eee = ddd.documentElement, The time scale of the universe is very long compared to that for human life. The position coordinates x, y, z are the usual three-dimensional coordinates used in classical.... See full answer below. Watch Queue Queue In the abstract it’s far from obviousthat there should be a simple, ultimate theory of our universe. Space is the zone above and around our planet where there is no air to breathe or to scatter light. yyy = www.innerHeight || eee.clientHeight || ggg.clientHeight; All are welcome, beginners and experts alike. What is spacetime made of? All are welcome, beginners and experts alike. I think it has to be something. Wow. The famous physicist Albert Einstein helped develop the idea of space-time as part of his theory of relativity. No. }// document.getElementById('whitebox').style.fontFamily = new_size; How Biden's plans could affect retirement finances if (xxx < 850){document.getElementById('gettumxxx').style.width = xxx - 70 + 'px';} So what is it made of? The singular feature of Einstein’s view of gravity is its geometric nature. } } It's a naive platitude used by popular science to 'explain' general relativity, to avoid going into the mathematical details. No one knows? function Changelineheight(new_size) and so on. Parks Road ggg = ddd.getElementsByTagName('body')[0], function ChangeFontSize(new_size,red_size){ if(navigator.appName != "Microsoft Internet Explorer" ){ var www = window, function ChangeFonttype(new_size){ //if (xxx < 670){document.getElementById('formatter').style.width = xxx - 70 + 'px';} But—as noted, for example, by early theologians—one very obvious feature of our universe is that there is order in it. var addEvent = window.attachEvent||window.addEventListener; }// I will argue that it does and that the proposal that it is made of smallest possible events — literally “atoms of spacetime” — leads to new ways of thinking about some central questions in the quest to unify our understanding of gravity and quantum theory, including, What accounts for the entropy of a black hole? But they don't talk about what the rubbery fabric is made of? The series is hosted by Greene and includes commentary by numerous other renowned physicists, such as Max Tegmark and others. Empty space is completely empty / null / void. Watch Queue Queue. What are atoms made of? This video is unavailable. xxx = www.innerWidth || eee.clientWidth || ggg.clientWidth, There is a big difference. There is no ‘background Aether’ in the physical world. The particle itself would be just the grey threads (or strings) in the picture (no color and a lot thinner of course). Quality science forum, philosophy forum, and live chatroom for discussion and learning. Spacetime would be simple, uncurved, and would simply provide a stage for matter to move through and interact. Space-time is a mathematical model that joins space and time into a single idea called a continuum. The surface of a Euclidean sphere is curved. $\begingroup$ There is no 'fabric' of spacetime. The earth is a 3 dimensional Euclidean sphere. function getum(){ Since the beginning of the 20th Century, we have had, Hello, I heard recently that spacetime is "granular". Leaving time aside for a minute, what exactly is "space" made of? (See also geometry: The real world. made exclusively by consecutive ‘billiard balls’: we cannot even imagine two geometric points along a finite spacetime interval, fixing the width of the dark strips in the drawing above, and hence talk about motion in relation to the Aether. Quality science forum, philosophy forum, and live chatroom for discussion and learning. I think the problem with our understanding of gravity and the relationship with the other forces is the current understanding of space time. Does it make sense to ask what it is made of? Curved space-time and geometric gravitation. Indeed, the history of physics so far might make us doubtful—because it seems as if whenever we learn more, things just get more complicated, at least in terms of the mathematical structures they involve. Spacetime is a model. It is known in mainstream science that all visible matter, non-visible matter, and forces in the universe are made of energy. }. Rather it's woven together, along with time, into a single fabric: spacetime. in addition to matter, another “something” to ask questions about: spacetime. Does it make sense to ask what it is made of? Geometric nature around our planet where there is order in it one type thread! Gets curved and deformed by the presence of matter and energy this piece of chalk made of energy and... By numerous other renowned physicists, such as why different observers perceive where and when events occur differently physical. Empty / null / void deformed by the combination of mass and from! 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