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Originally posted by intrptr
reply to post by swan001
I don't get it...
If I am looking back at a clock on earth as I accelerate away from it at the speed of light, the clock back on earth appears frozen because the light from the clock is keeping up with me. The clock on earth is still ticking at the same speed as my clock on the ship. The people of earth are still moving thru time at the same rate as I. The image of the clock outside my window is frozen, not the actual passage of events back on earth.
So why do we hold that when I return the time elapsed is different for Earthers than me?
Sorry for the dumb down in a smart thread, maybe someone can explain that for me...
Yes I can, in a most easy to understand way. The clock doesnt look like it is frozen because your going the exact same speed as the light so iit stays the same, if you go kight speed and turn on the headlights, the light leacing the ship would do so at the speed of light relative to your ship, so yes your going C ( the speed of light in physics is denoted by the letter C) light will travel the speed of light away from you, this is where time dilation comes from. This is why the speed of light is absolute, it doesnt care your speed, it travels at C away from yo uh, relative to you, not the space around you.
As an example to make this more easily understood, you are on earth, and watch a ship going the speed of lightfly by right as it turns on its lights, the light doesnt go 2 times the speed of light from the ship, the time of the ship stops, allowing light to travel at C away from the ship.
So you would see the crew at a frozen moment in time, as it passed, yet to the crew on the ship, they would see time outside zooming by at rediculous speed, for example, the crew would see the pyramids be build and erode away in a matter of moments.
Do you see how time is relative here? On earth you woukd swear they were frozen and unmoving, yet to them they are moving normally, to them you woukd be moving at unimaginable speeds, yet to you, you woukd be moving at normal speed.
It is all relative to the observer and their velocity, and or proximety to a gravity well.
Hope that helped.
Phage already answered this on the first page:
Originally posted by jiggerj
Originally posted by Phage
But using your logic, why does a clock run faster when it is in orbit than it does on Earth surface?
edit on 3/3/2013 by Phage because: (no reason given)
I thought the clock ran slower in orbit? The faster the clock moves, the slower time goes, right?
Originally posted by DenyObfuscation
reply to post by inverslyproportional
No one is asking for your "help" so feel free to save it. Phage and Arb know way more than you do and they know how to share it without being like....well.... you.
Originally posted by Diablos
So, OP if you don't accept special relativity as fact, then do you believe in some sort of Aether that is the preferred reference frame for light? Just exactly how far back are you attempting going with your challenge to "mainstream physics"? Was Maxwell a fraud and his equations also just a "theory" as well, despite the fact they are the essentially the basis for the existence of modern civilization?
Special relativity is essentially Maxwell's theory of electromagnetism without a preferred reference frame. Hence, it's either you believe in the Aether despite the fact it has been proved experimentally to not exist, or you think Maxwell was wrong. Which one is it and why?
edit on 3-3-2013 by Diablos because: (no reason given)
Originally posted by ImaFungi
I could be wrong but I thought Maxwell believed in an aether.
I think modern physicist do too, they just refer to it as the omnipresent EM field. (throw the higgs field in there just for fun too and it sounds like we found the aether)
Originally posted by swan001
Originally posted by Chamberf=6
Also you are picking things to debate that have ben tested, double tested, triple, etc.
Have you ever been to light speed? Have you ever seen a quark? The purpose of this thread is to determine what's fact and what's nothing more than glorious theory.
edit on 2-3-2013 by swan001 because: (no reason given)
Originally posted by Phage
Again your use of an inadequate analogy is confusing you. Inflation doesn't stretch space, it is an expansion of space.
Such expansion would stretch space and smooth matter, while leaving small density variations that show up in the CMB.
As time passed, the Universe expanded, meaning that the fabric of space was stretched in all directions. The possibility that space can be dynamic is a consequence of Einstein's General Theory of Relativity. The expansion of the Universe pulled material apart and caused the world to cool.
When the Universe was just a tiny fraction of a second old, it is believed that space underwent a tremendous stretching, probably by more than a factor of 10^50. This event, know as inflation, was the idea of Dr. Alan Guth, currently a professor of physics at MIT.
And that’s what inflation is. It says that, in order to set up the Big Bang, just prior to this hot, dense, expanding state, the Universe was expanding exponentially fast, doing the following things:
Stretching space — whatever shape it was in before — to be so large that it appears flat.
A simulation at this link portrays the distortions in space and time at the subatomic scale, the result of quantum fluctuations occurring continuously throughout the universe. Near the end of the simulation, cosmic inflation begins to stretch space-time to the cosmic proportions of the universe.
Same region stretched to macroscopic size
The hypothesis of inflation is that a rapid expansion of the universe occurred shortly after big bang. The expansion would be rapid enough to stretch space time, making it as flat as we see today
Originally posted by Arbitrageur
So you're not denying the redshift, you're saying it's not caused by a "rush-away-from-each-other movement" or more correctly the "metric expansion of space" as others have pointed out, but by something else
There is no known interaction that can degrade a photon's energy without also changing its momentum, which leads to a blurring of distant objects which is not observed. The Compton shift in particular does not work.
It is possible to model the current cosmological redshift as an energy decrease per distance based on the interaction of spherical quantum waves, which are postulated to define mass-energy density based on previous investigations [1]. In this paper, quantum waves are postulated to have a limited range of Ru = 1.9 × 1026 meters, which defines a Hubble sphere around a point of observation, where the observation of distant objects appears to be redshifted with reference to our local sphere. The redshift is due to the reduced interaction between quantum waves of our local sphere and the quantum waves of the sphere that is centered around the distant object.
It is shown by the author that if gravitons are super-strong interacting particles and the low-temperature graviton background exists, the basic cosmological conjecture about the Dopplerian nature of redshifts may be false. In this case, a full magnitude of cosmological redshift would be caused by interactions of photons with gravitons. A new dimensional constant which characterizes one act of interaction is introduced and estimated. Non-forehead collisions with gravitons will lead to a very specific additional relaxation of any photonic flux.
Too lazy to look it up even when I give you an exact search term? OK lazy bones
I have to wonder if you're one of these few.
Originally posted by kthxbai
It seems a few here are having issues differentiating time and the measurement of time.
I agree, and I'm going to quote one such example I don't believe you understand yet.
Phage has given some wonderful examples that have been presented with patience and stated in ways that everyone should be capable of understanding.
This is partly true and partly false. When you say "Time doesn't change, the perception of (or measurement of) time can.." and "Time itself doesn't speed up or slow down, only our perception of time changes.", what is the difference between "Time Itself" and our "measurement of time"?
Time doesn't change, the perception of (or measurement of) time can vary depending on what frame of reference you happen to be in. Time itself doesn't speed up or slow down, only our perception of time changes. That's where relativity comes in.
He may be right about that though I would say orbiting very close to the event horizon of a black hole since I don't really know what happens inside the event horizon. How would you be able to watch the universe end from that location if time hadn't really slowed down in that location? You wouldn't have to be measuring time to watch the universe end so it's not just a measurement issue.
Originally posted by Phage
So on Jupiter you would age slower relative to Earth. On a black hole, very much slower. In fact you could probably watch the universe end from there.
Originally posted by intrptr
If I am looking back at a clock on earth as I accelerate away from it at the speed of light, the clock back on earth appears frozen because the light from the clock is keeping up with me. The clock on earth is still ticking at the same speed as my clock on the ship. The people of earth are still moving thru time at the same rate as I. The image of the clock outside my window is frozen, not the actual passage of events back on earth.
So why do we hold that when I return the time elapsed is different for Earthers than me?
Originally posted by Arbitrageur
I have to wonder if you're one of these few.
Originally posted by kthxbai
It seems a few here are having issues differentiating time and the measurement of time.
This is partly true and partly false. When you say "Time doesn't change, the perception of (or measurement of) time can.." and "Time itself doesn't speed up or slow down, only our perception of time changes.", what is the difference between "Time Itself" and our "measurement of time"?
Time doesn't change