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The victorious truther

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  1. If I recall it was Kant who, through his transcendental idealism, attempted towards interpreting space/time as such by supposing that it was required for our cognitive understanding of the greater reality but that it did not exist separate from our cognitive faculties. Though, substantivalist time is similar in nature to a form of physical change that isn't entirely impeded by arbitrary physical relations. Think of the Sydney Shoemaker thought experiment of time without change in which despite the fact that no physical change is occurring there still seems to be an un-impeded (immaterial) external clock that ticks along at the same interval of years as measured by physical clocks in a non-frozen universe but not effected by this law-like freezing. The thing here is that in any of these situations we are not ignoring the fact that it's physical objects and the changes in their properties/relations which give rise to the rather abstract models of time or spacetime structure that were entertained by Einstein and Newton. I'd be more concerned with trying to strip the abstractions of time away but not loose site of the fundamental change inherent here. What i'm concerned with then is a more general perspective on physical objects than special relativity itself gives. Special relativity goes in a relatively good direction with it, under certain interpretations, champing the fact that there is no known physical mechanism that allows for universal simultaneity let alone the specification of an immutable universal clock across the universe (ignore global time slices in GR here). Not only that, there is a strong dependency of the change of objects relative to others perhaps making such a theory more amenable to those of a relationist guise. I've linked a Jstor paper on this which gets the gist of what my perspective is. 20533187.pdf
  2. Okay, what do you mean by "physical" and "dimension". For the first term are you making reference to our everyday intuitions about the permanent existence of matter around us (such as chairs, the floor, air) and what particle physics has to say on what exists or constitutes objects. By the latter term are you making use of a mathematical definition of the concept of "dimensions" or is this something other than that. "where all aspects", so is this the equivalent of taking in the greater environment of the universe and from that happening to find a consistent rate of change upon which other processes can be compared to? I think every science has periods of reflection on their basic concepts. But the need for that should normally come from, in this case, the physicists themselves. If they get stuck in the progress of understanding of nature, if they are confronted with anomalies or inconsistencies in (or better between) their theories, or get stuck in trying to encompass more phenomena in one single theory, it is time to reflect on what they are doing, which includes reflecting on fundamental concepts they use, like time. Some might feel the urge earlier than others (justified or not). Compare with two different 'cultures' in physics concerning QM: there is the camp of 'shut up and calculate', and look at what technology was developed on that basis! On the other side there is the camp that asks fundamental questions, e.g. the Bell theorem and experiments that are based on it. For the shut-up-and-calculators such experiments seem to be at most interesting, but of no use. But look what happened afterwards: from there we have now quantum cryptography, maybe one day we will have useful quantum computers. So I would say: just give physicists time (pun intended). I believe they are called instrumentalists or operationalists, those you would call the "shut up and calculate" crowd of physicists. Much of the literature i've read on the subject of the concept of "mass" in physics has also been seen with a large changes due to the fact that special relativity with it's rest mass/relativistic mass come into interpretational conflict with inertial mass in classical physics as you may wonder if either of those masses themselves are the same as the inertial concept newton initially gave. How about if space and time are simply methods of the mind to structure information? Essentially, the mind takes certain raw data and uses this to continuously construct a model of reality, which we then become aware of as an object of consciousness. It is difficult to imagine what such a mental model could look like without some method to introduce spatial relationships and causal structure between its constituent parts. In that view, spacetime is quite real, just not necessarily as an attribute of the ‘world an sich’ (to paraphrase Kant, not that I necessarily agree with all his ideas), but rather as a function of the mind - which, interestingly, is itself part of the created model. Ahhh Kant, wonderful that somebody else has heard of his anti-realism strategy towards spacetime philosophy. Though, in reality it's intriguing to wonder how far you can strip reality of these properties of either space or time such that reality remains rather coherent. Perhaps at the base there is a sense of whether one object coincides with another or whether they overlap but that the metrical components of spacetime are more or less emergent. Think of an affine geometry in which there is no fundamental metrical notion aside from acknowledging that one thing is larger than another and the possibility of assigning metrical notions given a presumed base length being arbitrarily specified.
  3. Physicists should care whether their exists time without change as this would seem to influence what sorts of quantum gravity/spacetime they are desiring to investigate (background independent vs. dependent). Though, it's not as simple as declaring it's 'real' or not as a mirage is certainly a rather 'real' experience to those who experience it and only an eliminative materialist would deny that you were having said experiences. Nobody would or does deny this but it's the conclusions we would make from such an observation that would play into deciding the truly important physical background that gave rise to it. In this case there aren't palm trees and a lake out there in the distance but this is merely a perceptual effect that tricked your brain which has been devoid of proper hydration to short cut even rather distant imagery to something familiar. I would think that to develop newer models and relay such ideas to the greater public they would make sure to choose their words rather carefully. If it's possible to move this to that section please feel free to do so. Yes. It is also as though some think it has an autonomous existence. I think much of this thought comes straight from pop-science authors and possibly even mainstream textbook interpretations of special relativity which exclaim the separate existence of this Minkowski spacetime from matter that bends or warps depending on your particular frame of reference. Because physicist don't bother, as long a they have perfect operational definitions of time. The question 'What is time?' is, as already remarked, a philosophical question. Not a question about physics. I think even you have no problem to understand what the traffic sign '50 km/h' means. Really, physicists have no problem with their 'dx/dt', or whatever changes according to t. And there are already several threads about time, and I think most of them in the philosophy-forum, where it belongs. Certainly some physicists do not. Such as Mach who tried to give an operationalist but failed abandonment of mass in classical physics by using the time integrated newtonian third law. Though, I find it rather strange we would shove such discussion far away from physics as in terms of certain theories (such as special relativity) its the pet philosophical interpretation popular with news organizations or well known physicists that got me interested in researching the philosophy here behind it. It's the philosophical interpretations that books, media, or even introductory material on the subject don't (pardon my language) shut up about that concerns me and yet were going to discuss it far away from physics?
  4. Dear scienceforum.net, I once tried to include myself in a discussion topic that went under the label of "what is time?" in which many individuals entered with various perspectives either championing the non-existence of time with respect to change (including me) and others who took rather standard interpretations of relativity (special or general) to describe what they mean. I felt that given some of the resources or knowledge i've attained perhaps the discussion could actually go somewhere or be somewhat more productive. Over the course of those four years I had realized that philosophy had already been discussing this with already predefined terminology which greatly simplified the discussion so it was easier to see the distinctions being made. Those who were proponents of material/physical change being above time/space (perhaps even making it non-existent or its structures mere abstractions) go under the label of spacetime relationism. Those who are proponents of the distinction of change to time or the existence of time without change (check out the original Sydney Shoemaker thought experiment) went under the label of substantivalists. A good resource for this discussion can be found here and I also thought the John Earman book "world enough and space-time" outlines the discussion surrounding the philosophical interpretational difficulty of general relativity. I'll also note that in the context of special relativity while there is an interpretation of the theory popularized by Minkowski (I believe) and a Lorentz-ether perspective these are both substantivalist interpretations. Ignoring the vagueness surrounding the concept of the ether, the Minkowski interpretations basically amounts to saying that the symmetries we see dynamically come from our one-way interaction with a real existent spacetime that contains said symmetries inherently. The other perspective basically distinguishes between the symmetries inherent in the spacetime itself (in this case i've seen people go with Galilean or Newtonian spacetime) while the transformations dynamically of forces/fields follows special relativistic equations. Basically Loretz-ether theory here could be that newton was only partially wrong about spacetime but especially incorrect about his dynamics. I'm mentioning this because when people try to emphasize change over time they seem to either be under the impression or think they are required to assert that there is some unique simultaneity relation when in reality while you could build one up (a global time in certain solutions of general relativity) it's not required to hold relationism. Further, I know this includes philosophy (didn't know exactly where to put it), however, this discussion is fairly close in line with modern forms of physics investigations. Including forms of quantum gravity such as LQG, string theory, or other recent perspectives on quantum mechanics such as relational quantum mechanics. So. . . what is time then? What are thoughts given this context? Sincerely, college freshman going on sophomore year
  5. Dear scienceforums.net, This would be my second posting and thought this would be the proper section to put this in. I've been trying to construct a generalized python simulation for any arbitrary n-bodies with predefined randomly assigned momentum and velocity. So far it was going well and even the initial run through went smoothly without many errors to be fixed but when graphing the data it seemed to me to be incomplete. Either I was shifting through the data wrongly, the initial conditions were off enough to not allow for a smooth nearly closed n-body system, or i've been wrong about the whole program apparatus to begin with. I should note that I use something called Jupyter Notebook to perform this. First was the introductory modules needed and after that the number "n" of bodies included. Then I randomly selected a random number from a triangular distribution which picked a number between 0 and 1 to then multiply the max mass to be included with this set being denoted "m". Then in another cell created a cell "s" where I which would be a single set that would include the x,y, and z positions followed by the momentum in those respective directions then the positions of second object with its accompanying momentum until we've gone through all the way to "n". It take the form of, [ x_1, y_1, z_1, p_x1, p_y1, p_z1, x_2, y_2, z_2, p_x2, p_y2, p_z2, ..., x_n, y_n, z_n, p_xn, p_yn, p_zn ]. The last nth bodies position and momentum are different because I wanted to set the center of mass and momentum at the origin so the momentum of the final object as to equal the combined negative momentum of the rest of the objects considered as is the position except we divide that value by the nth mass. The cell after this is the meat of the program which cycles on through "N" number of years at an hour a time as the units of the t's are seconds so this should explain the numbers used. I added up the number of gravitational forces "i" acting on the "jth" object not including itself without repetition then recalculated the momentum followed by the positions in the x,y, or z directions then append it to set "s" with the same order as before Rince and Repeat. Hopefully you can make sense of my program and check my work. Did I do this right? What are your opinions on my work? Sincerely, The victorious truther Multi-body Gravitational Simulation.pdf
  6. @String Junky, then what did you think of my incomplete paper? I had done that in my free time for fun. Critiques are highly desired. It's so welcoming to see someone that is throughly peaked, interest wise, in all of the known sciences.
  7. Okay. @String Junky, what have you spent the most time studying over the years in physics?
  8. Yes, some people mean quantized vs. continuous when they say something is classical.
  9. I always used classical physics to mean physics before Einstein's special/general theories of relativity. Classical is the same as obeying Newtonian laws of physics together with a galilean or similar spacetime structure.
  10. @studiot, yes, it should be worded to mean that's constant but not dimensionless. I'll fix this, thank you for clarifying this.
  11. Dear scienceforum.net, As of late i've been trying to investigate the non-mainstream claim i've heard around on certain "crank" youtube channels or in comment sections in relation to relativistic acceleration (constant proper acceleration). Some of these layman or non-mainstream critics of special relativity have claimed that because the electromagnetic interaction is finite in speed (rather than being instantaneous) that the slow drop off to a constant velocity in the long run (never reaching the speed of the interaction "c") can be fully explained or expected under a classical model of the interaction. What this model is or how it explains nor mathematically realizes exactly or approximately the special relativistic solution is a mystery because it's usually vague in how this is stated. This concept, however, had peaked my interest and I decided to investigate on my own by constructing a classical mathematical model to describe the interaction to then see what would come out of it. Below is an incomplete paper i've written on it for fun and would love for any of you here to critically analyze it as well as double check my work because it was getting rather insane towards the end. I hope this was the correct area to put this as it's speculation. Thank you for your close consideration. Sincerely, a freshmen going on sophomore year Non-Mainstream Solution to a Relativistic Problem.pdf
  12. Yes, I have seen this site and this is where I did get the book idea from but was just wondering what other avenues I may go through. The list isn't necessarily isn't extensive to the nth degree I would assume but does contain a lot of valuable information.
  13. Lately I've been interested in investigating the more intricate parts of special relativity beyond what is readily apparent on wikipedia or physics 101 videos. So, besides mathematical treatments, I want to investigate the extensive experimental support that has been built up for special relativity over the 20th and 21st centuries. I have had my eyes on Y.Z. Zhang's Special relativity and its experimental foundation seen here on amazon. Does anyone else have any other suggestions on further choices (Books and Papers alike) or comments on the viability or quality of the book above?
  14. Dear mordred, if time is just a concept we use to measure duration then how would you interpret time dilation close to the speed of light or in a strong gravitational field.
  15. "What do you mean, what is it made of"? So is it immaterial, is it like invisible undetectable squirrels that are causing things to decay. Distance is just a word we use to describe the separation of two physical objects. I could say these objects are a meter apart or a few yards but these are concepts we use to relate certain distances. So as with the second which is used to distinguish a certain scale to measure the changes in the position of an object. Speed is the change in position over the change in the oscillation of a physical object which you continue to suppose some metaphysical field is causing. When I say that time is not measured by a clock, I mean that there isn't a metaphysical presence that warps or causes it or allows it to change. We have two different views on a clock, you say it is time that is causing the change and thus a measurement of it while i'm saying that the clock is changing and thus we use this oscillatory motion to compare other changing objects to. You say it is dependent while I say it is independent.
  16. So time is physical? What is it made of? A clock does not measure time it is a device that has replicable oscillatory capabilities. Well, one is something that can and possibly does have physical consequences in the known world. While the other is just an abstract concept used to describe or help in calculating certain variables.
  17. But the measurement of a second does require the counting of a number of changes in the position of a cesium atom. How else do you measure time or know the units of time without measuring it from what you consider an objective clock which changes at a set rate which you can then use to compare certain processes.
  18. Thank you modred for some common sense.
  19. Do you mean a dimension as in a literal sense or in a mathematical way?
  20. And so what is time? Is it the measure of change or the cause of change?
  21. I agree with Eise that time and space do not deserve the place of what we would consider real physical presences. Time is only relevant when we can observe change and compare that to a set value of change from a certain physical oscillator, like a cesium clock or a pendulum, to better record or compare the phenomenon. When we say that something took a whole day to complete, we can imagine that, as we have experienced and have a set value to how long that would be. If I said that someone was very tall, you wouldn't be able to imagine a concrete and absolute view of it. Although, if I said that he was four meters tall, using this set scaling system allows me to compare and contrast with other objects that I know of to get a good grip on the reality of it. The fact that we have these set SI units allows us to create concrete pictures of the world around us using these concepts which could be abstract, physical, or emergent of other physical phenomenon. The meter is a length scale that is now defined as the distance light travels in a vacuum in 1/299792458 of a second. Where a second is defined as 9,192,631,770 periods of the hyperfine state of the ground state in a cesium atom which is in turn, once again, a measure of the change or movement of an object.
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