You used that fact of our standard as the basis for your claim.
I'm upholding the definition of the meter, SR does not. Explain to me how you determine the length of a meter in a frame, using light and clocks, according to SR and I will show you the error of your way.
The origin matters because if c wasn't a constant, then you couldn't use it to define a measurement.
What does the origin of the definition have to do with light traveling at a constant speed in a vacuum? We use light travel time to define the meter because light does travel at a constant rate in a vacuum, INDEPENDENT OF OBJECTS!!!!! The speed of light is not relative to objects, it is relative to space. Light is laying meter sticks in space as it travels its constant rate for a duration of time.
If I can measure the speed of light in my inertial FoR different than your measurement of the same beam then we cannot agree on lengths.
Correction, if you don't know what your frame's velocity is, then you have no business measuring light in your frame and debating me about the speed of light in my frame (that does know the frame's velocity, and therefor can know both the speed of the frame and the speed of light). I know the speed of the frame, so like in your example, I determined the car was traveling .99c, so I KNOW that since my car is traveling .99c that the real speed of light is 299,792,458 m/s. On the other hand, you don;t know the velocity of the car, because you have no way of determining that velocity in space, not relative to no other object. There is no other object to have a relative velocity to, there is simply a car in space and the light it emitted. You made up some BS .99c car velocity, like you had known that from measurements you took in the car. So tell me, how did you determine the .99c velocity using light and clocks in your car??? I'm dying to hear this!!!
So somewhere our measurements must be in error, either length, time or speed of light. If we cannot agree on basic measurements, then it becomes impossible to do science and each and every place in the universe can have it's own local laws.
Don't make plural what is not. It's not "our" measurements in error, it's YOUR measurements in error. I know what the velocity of the frame is, you do not. Since I know the velocity of the frame I can make an ACCURATE determination of the real speed of light.
How is it to be determined who has the 'correct' measurement then? Who's FoR is the preferred one?
Everyone has the correct measurement if they first know their frame's velocity. If you use Einstein's ways, you don;t know the frame's velocity, because in Einstein's world, it's not your frame that is moving, it's every other frame that is moving. Ask all of them, they'll tell you. (What a load of crap!)
Nothing is actually ever proven in science so your language is suspect. Length contraction has never been falsified.
I don't expect you see much considering your lack of understanding of the implications of your unfounded beliefs.
Length contraction has never been falsified so it's what, still taken to be true? (rolls eyes) I have an invisible blue dragon in my living room. It's never been falsified.
Length contraction occurs in every axis of travel. No one expects contraction in a direction where there is no relative movement. Using the Cartesian coordinates, if I am moving in only the x axis, that is where the contraction will occur, if I'm moving in both the x and y axises, there will be contraction in both of those.
If you are moving only along the x axis the y and z axis are NOT contracted. So as in your car example, the car is moving along the x axis. Do you think the light will be the same distance from you along the y and z axis after 1 second, as it is along the x axis after one second?
You are making it impossible as there is no way to determine a preferred frame of reference.
Another correction. It's Einstein that doesn't have a way to determine the preferred frame. I have a way of determining an absolute zero velocity in the preferred frame. I know the frame's velocity, regardless of the velocity (to include a zero velocity). Einstein has no method of determining an absolute zero velocity, so he fabricates his illusion world.
In your world, everyone will measure a meter an/or a second different depending on how they are moving.
Correct, but again, they know the frame's velocity in addition to the measurements they took, and from that information they know the speed of light. But, let's get real here for a minute. It's only in Einstein's world do you need to keep measuring the speed of light over and over and over. In my world (and in yours too) the speed of light is defined, so I know what the speed of light is. Light travel time DEFINES the meter, hence the speed of light is defined!
So the speed of light IS variable.
No, the speed of light is defined. It is impossible for the speed of light to be anything different than 299,792,458 m/s, because the very definition of a meter is the length of the path that light travels in a vacuum in 1/299792458 of a second. So, light travels 299,792,458 meters in one second, hence the speed of light is 299,792,458 m/s. Not variable, not possible to be different than 299,792,458 m/s. Comprehend?
I measuring the same beam of light at 10% of the speed that you are measuring it.
Did you take into account that your frame had a velocity in space where light travels independent of your frame?
Zero velocity relative to what?
Relative to the light sphere. Relative to the point that the light was emitted in space.
No, the point of emission of light, the center of the light sphere.
It's not "my" frame of reference, it's the preferred frame because all objects travel in the preferred frame where light travel time defines distance.
More like his brilliant insight. If I'm traveling .99c relative to you, then you appear to be traveling .99c away from me. Who's motion is preferred?
No, his BS! I had it right the first time. There is one car in space. How do you determine its velocity using light and clocks? Again, Einstein has no way of knowing that, so he pretends that since you don't know the velocity of the frame, and no way of knowing, that it must be zero. lol
You on earth are flying through the solar system, which is zooming through the galaxy, which is moving withing our local group, etc. Where exactly is the 'at rest' FoR?
When light travel time is the same one way times along a stick and back, in all directions, then the stick has an absolute zero velocity. If the one way times were 1/299792458 of a second, then that stick is a meter stick.
No one has any way of knowing, including you. You have no way of knowing if your inertial reference frame has any velocity unless you consider it relative to something else, hence the name.
Who the F is Einstein to tell me no one can know the absolute velocity of my frame. His whole world is based on a misguided assumption that one can't possibly know the velocity of a frame in the preferred frame. His whole world is based on the assumption that his frame is never in motion, it's always the 'other' frame that's in motion. Sorry buddy, when using light and clocks to determine the meter you have to KNOW the velocity of the frame!