Recent content by Raymond Potvin

About the OP, I got a shortcut answer. Let's get practical! The speed of light one way is impossible to measure, and the OP assumes that it is. In real life, we will never have to solve that kind of problem, because we will never face it, so it is no use to study it.

A Muon is a massive particle that has to get its speed from acceleration, so it has to accelerate from the point where it is created. It may get that speed quite fast, but it cannot get it instantly because, being massive, it has to resist being accelerated.

It is necessary if we want to make constant predictions, not to understand how light moves between moving bodies. I could have chosen not to consider acceleration in my simulation, and it would have given the same simulation, but it is the blue clock that would have suffered time dilation. From...

Einstein didn't say it this way, but he used the light clock mind experiment to explain SR, and all his space-time concept is based on the way light moves between moving bodies. No light clock traveling sideways to their motion in my simulation either, just light exchanged between inline moving...

Motion is relative, so we cannot tell for sure if a body is in motion or not because we don't have an absolute reference frame in hand, but acceleration is absolute, so if we know a clock has accelerated, why not use that information to eliminate all the other possibilities?

Assuming that acceleration was not needed for a clock to move around, we could pretend that it is the blue one that moves away and that comes back later, and we would simply get reversed results. We can only make predictions when we know for sure which clock has accelerated.

That problem is solved using the Sagnac effect, not relativity.

I said you were right, and I said a simulation would give the same result, but I also said that if we were considering that it is the yellow clock that was accelerating towards the blue one at the end, then we can also consider that it is the one that is accelerating away from it in the...

I claimed that assuming a clock has accelerated doesn't affect the calculations, it only simplifies the understanding. If a prediction can be made while changing reference frames, then the same prediction can be made while only using the rf of the clock that has not accelerated. If no prediction...

It's so much simpler to add acceleration as an evidence that discriminates the possibilities. A twin cannot say it has accelerated when it has not, that's over complicating the problem for no practical advantage. The muon case is a bit different, but we also know it has been created in the upper...

My simulation is not off topic, and it is not a personal theory either. It is just a fabulous tool to study relativity. But I admit that I didn't need to rely on the reference frame principle to make it, and I admit that assuming acceleration helps us to determine which clock is moving is not...

Well, if you know you will be younger than somebody left with the clock, then you know your clock will confirm that you are younger.

Hi jbriggs! Leaving a clock behind in space means put it outside the ship and accelerate away from it. If you return to the point after a while and the clock is still there and has not accelerated, you know your own clock will have dilated.

If we know that the ship has accelerated in a given direction for a while, then we know its speed in this direction with regard to the point where it started accelerating. If a clock was left at that point, we could thus know how much time dilation our clock actually suffers compared to that...

In my simulation, the yellow clock's width is half the width of the blue one. If I wouldn't have made that correction, the yellow one would have ticked less than 16 times, so it would have suffered more time dilation than what the data tells us. Without contraction, the muon would simply last...