Recent content by Aleberto69

Hi stevendaryl, thanks for your reply however I haven't understood how it answers my questions: How are the SR postulates better formulated including NIFRs? Lorentz transformation for NIRFs? Furthermore I do not understand your transforming formulas. What is "g" representing?

Hello, Apologise entering in the midlle of the discussion, however I tought that it would have been more appropriate than asking similar things in a new thread. Well, I'm very interested on the topics on SR applying in flat spacetime and the misconception that it doesn't apply for not IRF...

TY very much... readings for half a century or more:-) !

TY very much, could you suggest a good textbook which address those calculation and deduce the formula you have used? TY very much in advance

TY very much, could you suggest a textbook that address those kind of topics? SR applied to NIRF, flat space time, Born coordinates...

Thank you very much. I can't imagine how to set up the equations for calculating: 1) the new transformation coordinates 2) velocity of light in the NIRF 3) ##ds## in the NIRF the NRFI I was immagining : ##v(t)= k~~~~~~~ when~~~~~~t<t_0## ##v(t)= k-(t-t_0)~~~~~~~when~~~~~~t_0<t<t_0+2k##...

TY very much , Now I know that SR works also on NIRF if the space time is flat ( i.e. no tidal gravity), however I do not know how to use SR in that case . For example if a RF is accelerated respect to a IRF: 1) What do Lorentz transformations become? 2)Do Lorentz transformation still have the...

TY very much PeterDonis So when spacetime is flat? Is space time flat for a clock or for an observer at rest respect a NIRF (Not Inertial Reference Frame e.g a reference system locked to a spacecraft / or a lifter that is moving with accelerated motion)? Could you explain how to treat NIRFs...

Hello PeroK. I spend a bit of time this week end try to be eventually convinced but I didn't succeeded. What I do not understand is how con be justified extending the result of SR which applies only to ISRs to a NISR. ( Hopefully I'm not wrong saying that SR applies only to IRSs) Concerning...

TY for your help.. I didn't write down carfully everithing but I will.. I think I understand what you meant .. I did some weeks ago some example ( starship and interstellar trip) on myself using Lorenz transformation ( before discovering this books that is nicely starting from this concept of...

Sorry PeroK.. I think you already answered in the last post.. Ill study it and comment ... TY very much

Hi Perok. I understood ( apologize if I'm wrong) that you had the chance to looka at the referenced page 7 . for me it is not really convincing that they can calculate the elapsed time of clocks which, at the end, are in general at rest with NIRFs. If I'm not wrong the calculated time...

TY PeroK, I regret to have put in the title of the thread the mention to the Twins Paradox which is interesting as well but it lead away from my questions that are related mostly to an argument that LandauLifshitz use at page 7 of their book where they use infinitesimal to approach the problem...

TY very much. I'll more carefully study your answer and the linked post tonight... find here http://www.elegio.it/mc2/LandauLifshitz_TheClassicalTheoryOfFields_text.pdf an old version of the books. Hopefully the book is copyright free as the link was posted in another thread from another PF...

Thank you PeroK. I wouldn't have dare doing that.. I was just wondering if what LandauLifshitz_TheClassicalTheoryOfFields page 7 said ( which seems to me similar) is correct or not. see my quote of the text in my previous quote ( which I'm not able to requote) partially reported below...