Alan McDougall Posted July 31, 2012 Posted July 31, 2012 TIME AND EVERYTHING IS RELATIVE NOTHING ISABSOLUTE Is there any absolute in the universe? Nothing is as it seems to be and all things are subjective realities to theobserver. Everything is relative to each person from the viewpoint of the onlyultimate reality. Every fundamental particle is like a tinyclock of its own each with its own subjective and relative time frame There is no absolute time, time moves differently from one object to the nextand in one location to the next. For example, time moves slower on massiveobjects like the Sun or Jupiter and faster on smaller objects like our Earth.It moves even minutely faster in space. This is no longer a theory, but provenfact. Extremely accurate precision atomic clocks on fast moving spacecraft havedetected this strange phenomenon and proven Einstein’s theory of relativity tobe true. Stop all the clocks in the universe and movement will continue unaffected. Stop all movement (Absolute Zero) and would what we call time will have anymeaning and would nothing ever happen again? Time is like an infinite elastic string maybe in only one direction, namelyinto future moment. The twin paradox describes what happens. One twin boards aspacecraft and travels close to the speed of light, on a voyage to AlphaCentauri, which is about four light years from earth. Some ten years he returns having aged only oneyear compared to his now twenty-year-older twin brother. This is due to timedilation at near light speed. This is just guess estimates by me. A very unlikely but maybe far distantfuture use of this effect is the possibility of reaching some calculated momentin the future. Given enough speed and an huge unlikely energy source needed todrive this very advanced spaceship, it is theoretically possible that, onecould say reach the Olympic Games of the year 3108, in a matter of a fewsubjective days. Backward times travel to the past, is afantasy and if this were possible, a person could do the impossible and go backand murder their younger self. There is no universal now! Nevertheless, inphysics and mathematics the expression of time is reversible.<br style="mso-special-character: line-break;"><br style="mso-special-character: line-break;"> We only conceive of time by themovement of an object through space, so space and time are differentintertwined realities. Is time just an illusion we use to track movement or is it a real part of thefabric of reality? By Alan McDougall 29/8/2007
uncool Posted July 31, 2012 Posted July 31, 2012 This isn't physics; further, its premise is wrong. The interval [LATEX]ds^2 = dt^2 - dx^2 - dy^2 - dz^2[/LATEX] between two events is absolute, as are several other things. =Uncool- 2
juanrga Posted July 31, 2012 Posted July 31, 2012 (edited) TIME AND EVERYTHING IS RELATIVE NOTHING ISABSOLUTE Is there any absolute in the universe? Yes. Nothing is as it seems to be and all things are subjective realities to theobserver. Everything is relative to each person from the viewpoint of the onlyultimate reality. If this was true science could not be possible. The laws of physics are objectively the same for all the observers. Every fundamental particle is like a tinyclock of its own each with its own subjective and relative time frame If you refer to proper time then two remarks: (i) it is not well-defined for massless particles and (ii) when defined, it is the same for each observer. Indeed proper time is one of the relativistic invariants. Is time just an illusion we use to track movement or is it a real part of thefabric of reality? Time is a basic physical property, with well-defined operational ways to measure it and with basic unit in the International System of Units. Edited July 31, 2012 by juanrga
Alan McDougall Posted August 1, 2012 Author Posted August 1, 2012 Yes. If this was true science could not be possible. The laws of physics are objectively the same for all the observers. If you refer to proper time then two remarks: (i) it is not well-defined for massless particles and (ii) when defined, it is the same for each observer. Indeed proper time is one of the relativistic invariants. Time is a basic physical property, with well-defined operational ways to measure it and with basic unit in the International System of Units. Einstein's theory of relativity did not say "everything is relative", it said that there is no absolute space-time coordinate system, so there are no absolute positions in time and space. All times and positions are relative This is what I meant I regret I did not express myself correctly, how can I change the thread title?
MigL Posted August 2, 2012 Posted August 2, 2012 As Uncool has stated, the space-time interval, a kind of four dimensional distance between events, is measured the same for all observers.
Alan McDougall Posted August 2, 2012 Author Posted August 2, 2012 (edited) As Uncool has stated, the space-time interval, a kind of four dimensional distance between events, is measured the same for all observers. body { background: #FFFFFF; margin: 0px; padding: 4px; font-family: verdana, tahoma, sans-serif; font-size: 9pt; } font { font-size: 9px; } font { font-size: 13px; } font { font-size: 15px; } font { font-size: 17px; } font { font-size: 21px; } font { font-size: 26px; } font { font-size: 36px; } As Uncool has stated, the space-time interval, a kind of four dimensional distance between events, is measured the same for all observers. I am not a physicist , nevertheless, I wrote the below article for you more informed guys to take apart if you like! We never really reach a moment in time, just when we think we have the next moment is already there. There is always a blur at both ends no matter how close one observes them. I once wrote a short paper on the subject, however, I used an arrow and how it flies toward its target always a blur like at each end. I rationalized this by saying the movement of the arrow was like infinitely tiny frames in a movie reel, jumping between moments rather than a smooth flow through the air like the flow of a river. If we stand still relative to the universe around us, time still moves, but once a person starts to move relative to the universe, time slows, this effect of course can only be seen in a meaningful way at colossal speeds approaching the of the speed of light. Some physicists say, however, that there is no real"Arrow of Time" or that time flows smoothly like a river, but time is in reality infinity of separate infinitively tiny moments, extending back to the eternal past and into the eternal future, in both directions from the moment we exist in the present. To understand the theory of infinitely of moments making up the reality of the universe, think of a loaf of bread as the universe and each grain of wheat in the loaf (universe) as a moment or "Now" somewhere in the universe?. The Left side of the loaf the moment of creation the right into the Infinite future Loaf or universe Big Bang=Past<.................................<NOW>.............................................................>Future >>>>>>>>>?? Someone on the other side of the universe, directly opposite, could exist in very the same "NOW" moment as you are. Like slicing the loaf directly in front of you are linking with every other ""NOW" across the time frame you exist in across the whole universe Thus a universal "NOW"exists across the in the universe at that moment! However the very next moment the "NOW's" no longer agree and you must make another slice to see what is happening at the other end of the universe, because the "NOW' moments jump to different "NOWS" because of the effect of gravity, mass, speed and relativity However, if you were to slant your hypothetical knife to the left across the universe, which is towards the past from your vantage moment in time" you would hypothetically be able to view what, is going on in the "NOW"moment in the PAST for of the object you first viewed in the same moment or"NOW" that was first in sync originally with your original moment or "NOW". You would be looking at the PAST of the far off object. Your "NOW' and its "NOW" would differ in time and space. You would continue to exist in the ever-jumping subjective "NOW" but could look into the PAST of the object in its objective "NOW". The same will happen if you took the hypothetical knife,sliced the loaf or universe to the right, toward the future, then you will be able to observe what is going on in the FUTURE of the objects "NOW" future. Thus, every moment that has ever existed from the very beginning of its existence until its end be it heat death or infinite eternity past, to the present, to the infinite future still exists in our universe and the law's of physics cater for that possibilty Regards Alan Edited August 2, 2012 by Alan McDougall
juanrga Posted August 2, 2012 Posted August 2, 2012 Einstein's theory of relativity did not say "everything is relative", it said that there is no absolute space-time coordinate system, so there are no absolute positions in time and space. All times and positions are relative Coordinate time is relative and varies with the observer but, as said to you before, proper time is the same for any observer. It is also named invariant time.
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