Faster than light travel

**tytower** · 05-10-08, 08:16 PM

I was just sitting here looking at some astronomy pictures and the question occurred to me .........When light passes a heavy gravitational field doesit speed up any ? . It has the dual properties of a wave and a particle remember so a particle would do so . Perhaps a wave also ........consider a sea wave hitting an island and the wave is changed behind the island .

So next question ...if it did speed up then a system that appeared 10 Million light years away might actually only be 5...supppose it might then also work in reverse by the path being made longer and taking longer to get here ?

**trash** · 05-10-08, 10:18 PM

When you look at it as a particle, it has no motion, t=0 and thus is has no wave function. It only has a wave function when it is moving. There is no change in velocity of photon velocity... it's constant all the way down and all the way up. It doesn't change speed in the quantum world. In the real world, the change of speed is a change of vector or a change in direction.
So while it appears to slow down in one dimension, it gains speed in another dimension. Looking at this in a classical 3 dimensional sense.

Feel free to play with extra dimensions if you wish.

**porkop** · 06-10-08, 10:16 AM

I'll go out on a limb here Trash........wouldnt the time dilation effect have a part to play where as the particle/wave will travel the same distance per unit time (according to it's relaity) yet an outside observer would see some thing different? An increase??? Or at least a delta V?

Also, still hanging out there..

F=MA

F due to gravity

M of photon = 0

So for a positive F on particle M =0, accelertation = 0 no change in Velocity?

carefully climbing back now

porkop

**trash** · 06-10-08, 01:55 PM

yeah, your starting to get into the area where even I have to think carefully about it. Time and gravity seem to be inter related. The photons still move though the gravitational field at the same speed, they don't pick up speed at they fall in. This would create a dopler effect, a red light falling into a gravity well would appear more blue from the bottom of the well if it were picking up velocity.
Gravity does however bend space, and when you bend space, you also stretch time.

For example... the shortest distance between two points is a straight line.
But in a place a differential graviational field between those points, and the straight line is now following lines of equal gravity. This means that the straight line is now bent between the same points and that line is now longer.
Since the photon is traveling at a constant speed, it now takes longer to travel between those two points. It gives the effect of time dialation.

Considering the light 'might' change velocity could explain some unusual things we see in the universe, like dark matter. The may be no dark matter, just a distortion in the way that we see photons behaving.
That's just a whacky idea off the top of my head and I have no evidence to suggest it's even plausible.

It's always fun to play with faster than light theories... but they hurt my head after a while. Running time in reverse is easier

05-10-08, 08:16 PM	#1 (permalink)
tytower Senior Member iTrader: (0) Join Date: Jan 2008 Posts: 149 Spent time on board: 4:38:28	Faster than light travel I was just sitting here looking at some astronomy pictures and the question occurred to me .........When light passes a heavy gravitational field doesit speed up any ? . It has the dual properties of a wave and a particle remember so a particle would do so . Perhaps a wave also ........consider a sea wave hitting an island and the wave is changed behind the island . So next question ...if it did speed up then a system that appeared 10 Million light years away might actually only be 5...supppose it might then also work in reverse by the path being made longer and taking longer to get here ?

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05-10-08, 10:18 PM	#2 (permalink)
trash Senior Member iTrader: (0) Join Date: Jan 2008 Posts: 394 Spent time on board: 3 Days and 11:36:42	When you look at it as a particle, it has no motion, t=0 and thus is has no wave function. It only has a wave function when it is moving. There is no change in velocity of photon velocity... it's constant all the way down and all the way up. It doesn't change speed in the quantum world. In the real world, the change of speed is a change of vector or a change in direction. So while it appears to slow down in one dimension, it gains speed in another dimension. Looking at this in a classical 3 dimensional sense. Feel free to play with extra dimensions if you wish.

06-10-08, 10:16 AM	#3 (permalink)
porkop Premium Member iTrader: (2) Join Date: Jan 2008 Posts: 506	I'll go out on a limb here Trash........wouldnt the time dilation effect have a part to play where as the particle/wave will travel the same distance per unit time (according to it's relaity) yet an outside observer would see some thing different? An increase??? Or at least a delta V? Also, still hanging out there.. F=MA F due to gravity M of photon = 0 So for a positive F on particle M =0, accelertation = 0 no change in Velocity? carefully climbing back now porkop

06-10-08, 01:55 PM	#4 (permalink)
trash Senior Member iTrader: (0) Join Date: Jan 2008 Posts: 394 Spent time on board: 3 Days and 11:36:42	yeah, your starting to get into the area where even I have to think carefully about it. Time and gravity seem to be inter related. The photons still move though the gravitational field at the same speed, they don't pick up speed at they fall in. This would create a dopler effect, a red light falling into a gravity well would appear more blue from the bottom of the well if it were picking up velocity. Gravity does however bend space, and when you bend space, you also stretch time. For example... the shortest distance between two points is a straight line. But in a place a differential graviational field between those points, and the straight line is now following lines of equal gravity. This means that the straight line is now bent between the same points and that line is now longer. Since the photon is traveling at a constant speed, it now takes longer to travel between those two points. It gives the effect of time dialation. Considering the light 'might' change velocity could explain some unusual things we see in the universe, like dark matter. The may be no dark matter, just a distortion in the way that we see photons behaving. That's just a whacky idea off the top of my head and I have no evidence to suggest it's even plausible. It's always fun to play with faster than light theories... but they hurt my head after a while. Running time in reverse is easier

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