Motor Daddy:
Remember where I showed you what was wrong with your "absolute space" fantasy and walked you through the basics of reference frames? Have you forgotten all that?
Distance is the 1 dimensional space between any two points of the imaginary 3 dimensional coordinate system of the infinite volume of space.
But there are many coordinate systems, not just one.
It is impossible for any motion to occur from 12:00-12:00.
Correct. The extent of length contraction depends only on instantaneous velocity.
That picture is a record of locations of the light sphere and the source at any given point in time. It is not debatable. That picture is a record of the past. It is a recording of the facts of the coordinate system of space.
But that's only in one reference frame. Different reference frames use different coordinate systems. Relativity tells us that no single coordinate system is preferred over any other.
Motor Daddy said:
JR said:
In the dot's rest frame, the waves move out at the same speed in all directions, and therefore the same wavefronts are at equal distances from the dot at all times.
That is a false statement.
But you said the speed of light is the same in all directions, so it must be true.
Ah, but wait! We had this conversation previously. Do you remember? We concluded that in your fantasy world the speed of light is
not the same in all directions in all reference frames, whereas in the real world (Einstein's world), the speed of light is the same in all inertial frames).
We have been over this many times, James. It is impossible for the outer light sphere to reach receivers that are fixed to the source an equal distance away in the x,y, and z directions, in the same amount of time, unless the source has an absolute zero velocity, in which case all observers will agree that the sphere is an equal distance away in all directions of the source.
You keep using the term "absolute", as in "absolute zero velocity". There's no such thing. That's a fantasy of yours, as we established previously.
No. In the dot's reference frame, the outer light sphere's boundaries are at the same distance from the dot at any instant in time.
NO THEY ARE NOT! It's impossible to use the same coordinate system and have two different results for two different observers. The animation is a record of the past. It is set in stone! There is not two different versions of history there is one!
Two different observers use two different coordinate systems. The animation shows only one of them. As for history, relativity preserves things like causation, so there's no problem there. Any event that happens occurs in all coordinate systems, and if A causes B in one coordinate system that remains true in all the others too.
Recall that this thread is about relativity, not about the Motor Daddy Fantasy Universe. Please try to stay on topic.
You're ignoring the constancy of the speed of light in ALL reference frames.
It's not so much that I ignore it but that you can't prove it. The red lines don't lie!
The red lines are correct. There's no need for them to lie.
As for proof, we previously established that all real-world evidence is against you and for Einstein. Did you forget?
Recall that in your fantasy universe, the speed of light is different in different directions for "moving" reference frames. That's the imaginary world in which an "absolute" frame exists. In the real universe, however, the speed of light is the same in all directions in ALL inertial reference frames.
That is not imaginary, that is a fact. Using the same coordinate system in space for all objects means an absolute frame for all. There is ONE universal coordinate system defining the infinite volume of space, in which light travel time defines the meter in that coordinate system.
Asserting an error many times never makes it any truer, you know.
In reality there is one coordinate system, not more. All objects and light are relative to that coordinate system.
Even in the same reference frame, there are multiple coordinate systems. Consider cartesian vs. polar coordinates, for instance.
There's no such thing as absolute velocity. That's another part of your fantasy world. Remember?
Wrong.
You're dropping that part of your fantasy? Great!
If the red dot is not at the center of the outer light sphere it had an absolute velocity, as shown in the pic.
No. It just had a velocity in the frame that the picture shows. That's all.
Since you can't remember anything relevant about reference frames, you're stumbling around in the dark again. I have no intention of attempting to walk you through the basics again. It appears you have the memory of a goldfish.