Recent content by Nathan123

Yes compared to its rest frame, but I don't need to consider that it is now resting (for itself) in order for me to have its length contracted from its rest frame. Time dilation needs me to consider that the second frame is now at rest for itself.

Thanks for your help. But we will have to close this. Some of the points being made are currently beyond what I have learned about SR, and some of the points I am making are not comming across. So it makes no sense to take this further. One parting point to think about. If i see something...

Going back first to math of PeterDonis, I still think that it explains 1 and 2 and not 3 and 4. I will try to explain here how I see length contraction working very differently than time dillation, which is the basis of this whole thread. The only reason there is time dilation is because we...

Thanks for explaining the coordinates.

I still don't understand what exactly is the meaning of the coordinate -.75.

It's late. I'll get to it when I have time.

It was nicely taught to me that there is quite a difference between the length contraction of the actual ship and the distance contraction between the ship and earth, even though both use the same exact principle. When you see the ship moving, it's length is contracted. When the ship sees...

I am trying to understand the underlying factor of "not at the same time". What makes the ship's starting time from its frame of reference different from the ship's starting time from the Earth's frame of reference? Both occupy the same space.

None of what I have written about has anything to do with disputing those three things. Everything I wrote assumes those three things. I understand relative motion. I understand relative time dilation. I understand length contraction for things you see moving. I presented 4 calculations. 1...

I will need to take this one step at a time in order to understand, if you will be gracious to be patient. I am trying to understand: 1. why is -.08 that starting time for the ship. Why can't we have the two starting at the same time (-1)? What would make it that the ship has a different...

I just read that and it gives a completely different option than the 4 I have been mentioning. It uses the Earth's frame of reference to have no length contraction, but still uses time dilation. Or it uses the muon's frame to have length contraction, but no time dilation. The second one I...

Something seems wrong here. If it is 1 km at .6c, then .8 km takes less time, not the same amount of time. It will be equivalent to .6c of the Earth's regular time, but it will take less of its own time, which happens to be slower. In any case, we keep coming back to 1 and 2 when I am trying to...

I don't have the background to do the math. I am a novice trying to understand to the best of my ability. I am using common terms to try and keep it simple.

When I wrote slower time/shorter distance I wasn't dividing. let me rephrase. [No time dilation and regular distance] is equivalent to [yes time dilation and distance contraction]. The point here is that from my perspective, whether I calculate for myself or whether I calculate for the ship's...

Which is why I am trying to propose the concept of length expansion. I see what others are saying that length contraction is not for the front as opposed to the back, but why not propose as such that the front gets condensed to the back, and the back expands out?