[neutralino]

Originally Posted by Lloyd Gillespie Neutralino, if we stick to the fact that matter/energy can never be destroyed, then IMO, the photon, or it's particle/energy must still exist___somewhere, somehow, in some form, otherwise; we must re-write the known laws of physics, as the photon is known from Feynman's QED experiments, to be both a particle and a wave...

I never said that energy is destroyed. As I understand it, if a photon has the same energy as a phonon mode, it is absorbed and turned into heat (presumably changing the phonon mode with which it interacts). If it has a higher energy than the phonon mode, then it is briefly abosorbed, and then re-emitted, causing an apparent slow-down in the speed of light. Thus, if all the photons follow route one, for a short amount of time, then it will look as though the light has been stopped, but in this case photons themselves will not have come to rest.

Again, I should give the caveat that this is way outside my field of knowledge, so my comments are not necessarily totally correct; however, to me, they make sense.

Furthermore, Lloyd, I've not read enough about DSR yet to make any valid comments. It's on my list of things to read though!

[neutralino]

Originally Posted by dipayankar This to me means stopped.

Which is exactly why those words are used in a newspaper article! Note that I'm not arguing the beam of light does not appear to be stopped, but I am simply saying that the speed of a photon has not changed.

I am a member of AAAS and I have also have original version of the article. There also these words have been put...

Cool. Can you provide a reference? An online link would be preferable, but the paper journal reference will suffice.

[dipayankar]

If what you are saying is an optical illusion that the spped is the same, than how come they make the photon travel at diffrent velocities??

I will search this article from the vault and send you a reference..

Originally Posted by neutralino Which is exactly why those words are used in a newspaper article! Note that I'm not arguing the beam of light does not appear to be stopped, but I am simply saying that the speed of a photon has not changed. Cool. Can you provide a reference? An online link would be preferable, but the paper journal reference will suffice.

[Lakshya]

Are you an Indian, Dipayankar? I am also an Indian. Where do you live?

[neutralino]

Originally Posted by dipayankar If what you are saying is an optical illusion that the spped is the same, than how come they make the photon travel at diffrent velocities??

Again, I didn't see the article claim this anywhere.

I will search this article from the vault and send you a reference..

Thank you.

[dipayankar]

Of course there is a different article and I am sure ProfPat will agree to it that there was a team that managed to make light travel at 38 kms per hour. I will search for the same. i anyone else can help, it would be great...

Originally Posted by neutralino Again, I didn't see the article claim this anywhere. Thank you.

[robmacriner]

I'm not suggesting that Time will reverse itself as one would rewind a movie. The point is that time as we know it can not exit without particle matter either expanding or contracting. Imagine a container of colored sand 5" high ..packed in a 50 'glass tube on a space shuttle. The color images of sand particles seen from outside the glass, might look like some kind of landscape. Now the sand explodes in the 50’ glass tube ....while the shuttle is docked ..and those sand particles hurl in a forward or expansive direction...up the 50' glass tube...after the explosion. But all of a sudden the space shuttle takes off, and the G forces are very intense, at the same time the particles of sand reach their maximum expulsion. The G forces would bring the sand back down to the base of that glass tube, in a hurry, but when they arrived packed back at the base, now once again 5" high they would not represent the color image of the landscape that was seen before the explosion....The image would be much different. Forward time would be the expansion of the sand after the explosion. Reversed time for the sand would be as the G forces drive the sand back to the based of the glass tube, and pack those colored sand particles back to it's original 5 ". That is the image of reverse time that I see. Rob MacRiner

[Lakshya]

Originally Posted by robmacriner I'm not suggesting that Time will reverse itself as one would rewind a movie. The point is that time as we know it can not exit without particle matter either expanding or contracting. Imagine a container of colored sand 5" high ..packed in a 50 'glass tube on a space shuttle. The color images of sand particles seen from outside the glass, might look like some kind of landscape. Now the sand explodes in the 50’ glass tube ....while the shuttle is docked ..and those sand particles hurl in a forward or expansive direction...up the 50' glass tube...after the explosion. But all of a sudden the space shuttle takes off, and the G forces are very intense, at the same time the particles of sand reach their maximum expulsion. The G forces would bring the sand back down to the base of that glass tube, in a hurry, but when they arrived packed back at the base, now once again 5" high they would not represent the color image of the landscape that was seen before the explosion....The image would be much different. Forward time would be the expansion of the sand after the explosion. Reversed time for the sand would be as the G forces drive the sand back to the based of the glass tube, and pack those colored sand particles back to it's original 5 ". That is the image of reverse time that I see. Rob MacRiner

Say it simply, that u mean that the time can only exist when an event takes place. Your expansion system is also wrong.

[robmacriner]

You might be right,....

[dipayankar]

Hi Rob, nice explaination. However the situation you described is highly improbable as you are suggesting reversing entropy...

Originally Posted by robmacriner I'm not suggesting that Time will reverse itself as one would rewind a movie. The point is that time as we know it can not exit without particle matter either expanding or contracting. Imagine a container of colored sand 5" high ..packed in a 50 'glass tube on a space shuttle. The color images of sand particles seen from outside the glass, might look like some kind of landscape. Now the sand explodes in the 50’ glass tube ....while the shuttle is docked ..and those sand particles hurl in a forward or expansive direction...up the 50' glass tube...after the explosion. But all of a sudden the space shuttle takes off, and the G forces are very intense, at the same time the particles of sand reach their maximum expulsion. The G forces would bring the sand back down to the base of that glass tube, in a hurry, but when they arrived packed back at the base, now once again 5" high they would not represent the color image of the landscape that was seen before the explosion....The image would be much different. Forward time would be the expansion of the sand after the explosion. Reversed time for the sand would be as the G forces drive the sand back to the based of the glass tube, and pack those colored sand particles back to it's original 5 ". That is the image of reverse time that I see. Rob MacRiner