Author Topic: how fast does light think light travels?(physics question)  (Read 5681 times)

Offline mietla

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how fast does light think light travels?(physics question)
« Reply #90 on: April 14, 2004, 12:13:01 PM »
Quote
Originally posted by NUKE
Interesting. Think about it in terms of God and it could make sense that he could be everywhere at once and eternal (from his perspective) if he where always "traveling" at the speed of light.


There are actually theories/analogies  like that, although I'm not sure how "physical" they are. The earliest of those theories started with Plato.

You can speculate/analogize all you want, but this is philosophy. Things ARE this way because I said they ARE this way, Therefore I've proven my point.

Physics takes a different approach, but no point in going there.


The Universe is like 8 mm film. If you look at it from the outside of a projector (higher dimensions), all frames of the film exist simultaneously. As a matter of fact in this view, there is no time. Someone outside the projector can see all of the frames at once, but (as the theory goes), we are stuck into 4 dimensions only, which is equivalent to being inside of the projector. Someone outside (he who can see everything at once), is playing the film. We can only see one frame at the time, and we can't rewind.

As a result we perceive

- "the past", frames we saw and remember
- "the presence" the current frame we see
- "the future" the frames we have't seen yet.

Playing the film in higher dimensions, produces perception of time in lower ones.

Obviously, the implication of this view is that

- there is no presence
- both past and future are unchangeable
- we are just passive observers and have no influence on the future.
- Everything is deterministinc
- there is no free will.

Offline AKIron

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how fast does light think light travels?(physics question)
« Reply #91 on: April 14, 2004, 12:17:22 PM »
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Originally posted by mietla
- there is no free will.


My oldest son and I debate this often, much to my wife's dismay. I contend that the actors on that film had the ability to ad lib and did so.
Here we put salt on Margaritas, not sidewalks.

Offline midnight Target

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how fast does light think light travels?(physics question)
« Reply #92 on: April 14, 2004, 12:25:14 PM »
You are all wrong...






I'll explain as soon as I get this dang warp core fixed.

Offline airguard

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how fast does light think light travels?(physics question)
« Reply #93 on: April 14, 2004, 12:40:12 PM »
I know that this may not be the answer that you're looking for, but the speed of light is a fundamental property of our universe.

It's just like saying 'why does gravity pull two masses together?

It just does. It's as unchanging as any other physical law, if not more so. Beyond that, the question of 'why?' isn't really something that anyone understands.
I am a Norwegian eating my fish, and still let my wife mess me around in stupid shops...

Offline Otto

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how fast does light think light travels?(physics question)
« Reply #94 on: April 14, 2004, 12:53:18 PM »
It not that 'something' might travel faster than the SOL.  What's important is that Matter (You and your Spaceship) never will.   No technoligical advance is going to repeal a Law of the Univerise.

  No man is ever going  to travel to the 'stars' the way you travel to Europe.  The distances are just too vast.

Offline Samiam

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how fast does light think light travels?(physics question)
« Reply #95 on: April 14, 2004, 01:07:02 PM »
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Originally posted by hitech
Anyone ever notice how speed of light problems are a lot light describing lag issues in AH? It all depends on your observation point, and hence there is more then one reality.


Which is why it's always a good idea to be filming whenever there's a chance you'll be going light speed. As we say in AH, without film there is no proof.

Offline mietla

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how fast does light think light travels?(physics question)
« Reply #96 on: April 14, 2004, 01:35:58 PM »
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Originally posted by airguard
I know that this may not be the answer that you're looking for, but the speed of light is a fundamental property of our universe.
 



Exactly, c is simply a speed limit of the Universe. Light just happens to travel at this speed under certain conditions. That why c was unfortunately named Speed of Light. This name confuses the hell out of most people.

Light does not always travels at c.
Light is not the only thing that can travel at c. Neutrinos, gravitons (if they exists, gravitational field otherwise) and a boat load of other particles can reach c.

Offline mietla

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how fast does light think light travels?(physics question)
« Reply #97 on: April 14, 2004, 01:37:27 PM »
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Originally posted by Otto
 No man is ever going  to travel to the 'stars' the way you travel to Europe.  The distances are just too vast.


Unless you find a way to warp the space, and shrink the distance.

Offline NUTTZ

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how fast does light think light travels?(physics question)
« Reply #98 on: April 14, 2004, 02:02:42 PM »
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Originally posted by mietla
Unless you find a way to warp the space, and shrink the distance.

Easy, just add water, we all know about water and shrinkage, right?

NUTTZ

Offline mietla

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how fast does light think light travels?(physics question)
« Reply #99 on: April 14, 2004, 02:05:56 PM »
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Originally posted by NUTTZ
Easy, just add water, we all know about water and shrinkage, right?

NUTTZ



must be cold water though, ice cold works the best.

Offline Otto

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how fast does light think light travels?(physics question)
« Reply #100 on: April 14, 2004, 04:10:54 PM »
Quote
Originally posted by mietla
Unless you find a way to warp the space, and shrink the distance.


That's ture, but if you do that you're still not traveling faster than the SOL.  As you say, you've brought your destination closer to you.

Offline MrCoffee

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how fast does light think light travels?(physics question)
« Reply #101 on: April 14, 2004, 04:28:18 PM »
Quote
Originally posted by Holden McGroin

Actually, if you set off the JATO's on your 68' Chevy Impala and accellerated to near light speed, then flicked on the headlights, the beams from the lights would travel out in front of you travelling away at the speed of light as measured from your frame of reference.


Thats sort of what I was trying to say.

Quote

They would also be travelling at light speed away from someone who stayed behind at the side of the Arizona highway.  The way both of you see the light travelling away at the same speed is because the time and distance change relative to the observer, but C is absolute.


Yes, the value of c (max speed of light) is observed as the same for both observers. If the spaceship had a target in front of it at 100 meters and the flashlight iluminated it and was observed from the ground observer, wouldnt that imply that those photons exceeded the recorded speed of the spacecraft if it was traveling at c.

Quote

The theory that your headlight beams travel away from you at C and that they travel away from the Arizona roadside at C is the reason we cannot travel faster than light speed.


I agree but thats not waht I was trying to say.
« Last Edit: April 14, 2004, 04:30:27 PM by MrCoffee »

Offline Otto

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how fast does light think light travels?(physics question)
« Reply #102 on: April 14, 2004, 04:32:21 PM »
What would happen if you could go faster than the SOL and why doesn't the Universe allow it?   Basically, if you went faster than the SOL you'd go BACK in time.  

 Think of Time moving out from you like the ripples on a pond at the SOL.  If you were to blast off through Space going ever faster you'd begin to 'catch up' with Time as it moved away from you.  When you reach the SOL you're moving as fast as Time and it would stop.   You and Time would be moving at the same speed.

If you went faster than the SOL you'd go past your 'present' time and reach a 'past' time.   That's the big 'No, No' and why it's not allowed.

Offline lasersailor184

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how fast does light think light travels?(physics question)
« Reply #103 on: April 14, 2004, 05:19:27 PM »
While I don't agree with it, Einstein said you can only go forward in time.

But that's assuming that time actually exists.


Remember, it doesn't mean **** what you percieve, the light will be moving at a velocity that isn't dependent upon what you perceive the maximum speed of light is.
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Offline mietla

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how fast does light think light travels?(physics question)
« Reply #104 on: April 14, 2004, 06:08:12 PM »
Quote
Originally posted by Otto
What would happen if you could go faster than the SOL and why doesn't the Universe allow it?  


Super luminal velocities are allowed. Only the transition through c is forbidden.