Recent content by Grampa Dee

thank you FactChecker

ok; thank you for your time and patience, Peter.

I understand; however, acceleration, for me, is first and foremost a change in velocity, which is usually measured with measuring rods (or light signals) as opposed to forces, and so I visualized more the experience of acceleration with measuring velocities...again, it's not easy for me to...

Thank you Peter; you've answered pretty much what I was asking... I'm sorry for my poor choice of words...it's not easy to express myself very clearly when it concerns scientific experiments. I just wanted to add... Grampa Dee said: I understand that both twins will indeed experience an...

I apologize for not being clear,Peter, I will try to answer your questions... --------- Peter wrote: "Sharing the same inertial frame of reference" is meaningless. What I assume you actually mean is "at rest relative to each other". But if that's what you mean, you should say that. ---------...

Thank you Peter for both posts. Yes, I see. I will then try to explain it in a different way, but it will still have some element of GR within it. I don't know if this will be accepted. Let’s say that, in a similar situation, we have two twins, each in separate rockets, side by side, sharing...

I believe that I also will need some help with this one, as I view the scenario in the same light as Allan, due to the source of gravitation being the cause for the rocket to "change" it's inertial reference frame. How can the observers in the spacecraft prove to themselves that they have...

Beckmann and Mandics, “Test of the Constancy of the Velocity of Electromagnetic Radiation in High Vacuum”, Radio Science, 69D, no. 4, pg 623 (1965). A direct experiment with coherent light reflected from a moving mirror was performed in vacuum better than 10−6 torr. Its result is consistent...

Hi PerocK: I wanted to answer back this particular post...I don't know what I was thinking in my last response; it was soon wrong... I will try to explain a little better; however I am not trying to claim what I'm about to write as fact, but simply something that bothers me. Take a light...

Thank you Dave: I think that I am trying to respond to too many people at the same time, and making huge errors in doing so.There are many side views of Relativity here that are too developed for me at this moment. I was not trying to reply in a way to correct them, it is just that all those...

Thank you, Nugatory; I'll read up on this ... understand that my original question did not centre on this...I'm not an expert on these particular issues, being the reason why I wanted to start with the basics...being the invariant speed of light as such..

Yes, PAllen, I don't know what I was trying to convey . I was certainly wrong in my example as it destroys the conservation of momentum. I certainly am not a pro in understanding science; However, I do not reject anything, but do have many questions about the subject, which might seem to you a...

Thank you Dale; this is pretty much what I was looking for...I will try to read on these experiments.

Thank you Dale: There is a lot in your post to digest, so, I'll reply to it later.

Thank you for your response, PeroK; There is much in what you've written and I'll digest what you wrote before commenting . I will only add this; In my opinion, it doesn't make any difference how "much" energy one gives into a system, but only at what speed does the vehicle of energy interacts...