Calrid wrote:Light moves I've seen it.
Time is undefined to light it does not stop just because you say so btw.
I am not sure who "you" is referring to...but I'll take that question.
Within our reality (which is within the expansion component of the universal system), the speed of Light is observed as a constant. This constant is used by physicists to define distance (
space) &
time.
I agree, BTW, "Light does not stop".
Actually, if everything is actually wave-like, at its most basic level, then nothing ever actually "stops". Waves must move to exist. (Even perfectly balanced standing waves which show no "apparent" motion, are constructed of equal but opposite motions.)
However, observers can sense when a Light message arrives at the point of observation (provided the sensors are properly tuned for that wavelength). That "point of observation" can be defined by using
space &
time relationships. So that "point of observation", could be considered as, "stopped" or "fixed" in a space/time analysis.
Calrid wrote:There's no reason to believe light experiences time as we do or does not but I'm damned sure the time component is meaningless to light because it is division by 0.
Again, I agree. Light does not experience time as we do. Similarly, the wake of a boat does not have the same experience moving across the lake as the boat creating it. And my shadow does not move across the street in the same fashion that I do, relative to the ground.
Light is produced or reflected from matter and is passively expanded until it reaches more matter. From the Light's perspective, It is starts and stops at matter. The expansion in between is "meaningless" to the light.
Even more-so, the expanded light is the same light no matter how large it expands. Every expanding sphere of light is an entangled photon wave from a single source.
Calrid wrote:It's really just that easy and anything else is pointless arm waving.
Exactly what are you saying is "easy"?
-- Updated January 2nd, 2014, 11:22 am to add the following --
Happy recluse wrote:I thought that relativity theory depends on the assumption that the speed of light is a constant irrespective of measurement or observers.
Steve3007 wrote:I'm clearly way too late here and someone else has probably answered this somewhere in the intervening pages but unfortunately don't have time to keep up. But, my answer is:
No. It's not irrespective of measurement. Relativity proposes that it will be found (by measurement), to be the same for all observers irrespective of how they are moving.
The important thing to consider here is to ask,
how does one measure the speed of light?
We can NOT actually "watch the light move", we can only determine how long that it takes to go a "defined distance". (
emission to reception)
Granth wrote:If seeing if it will say something testable about the world as if the world is external to mind, then the test itself will be, as convention will have it, inherently flawed.
Steve3007 wrote:To keep things as broadly applicable as possible, I would say that it is this:
See if it will say something testable about observation events and the patterns that appear to connect them. Observation events happen in minds. So, no, the most general attempts to understand the patterns in our observations don't need to posit the existence of anything external to a mind.
However, one of the first and most basic simplifications and reductions that we make in our efforts to manage the complexity of our experiences is to notice that many observation events are very similar, with the only substantial difference between them being the character of the particular mind in which they occur. So it is sometimes but not always possible to factor out the mind variable from the equations, as it were. Like all such reductionist simplifications, you have to be aware that you've done it and aware that, in making the simplification and managing the complexity, you've lost something. It's a model. And whenever you make a model you lose something. But we still make models because we also gain something.
Everything, both
within and
without is sensed
within your consciousness. However there is an order to things. We are not actually examining "things" when we do experiments. Things are just the carriers. We are really testing theories of "relationships".
You can argue that "everything is just in the mind" or "things really do exist, in a real sense, outside of consciousness"...but this argument is extraneous to the action of studying the "relationships".
-- Updated January 2nd, 2014, 11:49 am to add the following --
AB1OB wrote:If you can understand the analogy of a 2-d circularly expanding water wave to a 3-d spherically expanding light wave, then I can describe absolute time and the speed of light using this "kiddie pool" analogy.
The basic APPARATUS (that you need to visualize) for this demonstration:
An enclosed, stadium-sized, circular, pool of water of equal depth. 4 observation points oriented around the pool. (like compass points-N/E/S/W). A train (or multiples of the same), on a straight and level track, to carry this stadium-sized pool room.
This train is running on a track that we will call "ABSOLUTE TIME". When it was constructed, each tie was placed the same distance apart from its neighbor. All of the ties have a magnet embedded in them. We have a "clock" on the train that works by counting the passing magnets.
OK. I think that should about do it for the stuff that you need to visualize. Now we need to visualize how all this stuff looks from 2 different perspectives. A god-like (external to the system) perspective, vs. an apparent (as seen from within) the system.
God-like perspective
From this perspective, we are not on the train. We can see the train moving along the tracks. This train is analogous to our galaxy. Our Galaxy travels a radius of expansion. Other galaxies are also on their radius of expansion. So what does this galactic expansion look like in terms of our experimental model?
From this external perspective we look down and see many tracks connecting at a hub and extending away like spokes on a wheel. Each track has another train, these are the analogy to other galaxies. Now it is easy to see why their relative expansion seems to be accelerating. (The spokes are lengthening at a constant rate and their divergence angle is constant but the relative space between the spokes "accelerates").
We can see that all the ties are equally spaced. We can see that all the tracks are straight. We can see that tie # 7654932 is exactly the same distance from the hub, no matter which track you check. We can see the train moving relative to the track. We see the track as stationary, on the ground. We see the waves in the pool move relative to the train and also relative to the ground. We can see the frequency and size of the waves and also the wavelengths.
Apparent perspective
Now we are within the system. I am going to describe some of the finer details of the methods for this demonstration; The "observation points", that I referred to above (compass positions around pool), are set up so that only the water waves create input. (The observers are blindfolded and soundproofed.) This isolates them from anything that is "outside of the system" from influencing them. They have a small access point that allows them to detect waves that reach them by feeling the waves. The observers also can initiate waves, from this small access point.
So "within" perspective does not feel the train moving at a constant speed. As far as "within" knows, he is stationary.
Each observer can receive messages in the language of waves that enter their "access position". Visualize that language. It consists of time between waves and size of waves. Just like Light.
I'm not done but I'd better stop and see if this is clear enough to understand before proceeding with tying it all together.
Since I've gotten no feedback on the above post, I am hesitant about bothering to proceed further.
I can say, to complete the model on your own, put the train in motion at the same speed as the waves traveling across the pool.
You will then have a model to see how everything expands into the future.
If anyone wants to discuss this seriously, and in more detail, ask me to explain further, I will. Otherwise, I'll assume that you are not interested, so I won't bother.