I don't visit this forum very often and I ran across this in a search. You don't have the integral corrrect. Here is the proper analysis:
t' = t(1-(v/c)^2)^.5
v=at
t' = Int[t(1-(at/c)^2)^.5]dt
t' = (-a/c)Int[t(t^2 - (c/a)^2)]dt
Int[x(x^2 - a^2)^.5]dx = 1/3(x^2 - a^2)^1.5
t' =...
cinci: Justin, Regarding your comment, "Special relativity postulates the laws of physics have poincare symmetry."
I found a copy of Einstein's orginal paper and I don't see a reference to Poincare in the postulates. Do you have another reference?
Justin: I'm not quite sure what you...
cinci: Your description of what I said as "strange quotes" is typical of your approach and poisons any attempt to have a real discussion with you.
STF: I am not trying to poison anything. I'm sorry if you are offended by my choice of the word strange. Such beliefs are strange to me because...
STFiction: Cincirob,
I'm sorry if you feel I misrepresented your beliefs. We were both looking at the same resources and claiming different things, and bringing the discussion to physicsforums to understand better had come up several times, so I started a thread and did my best. You have...
Please excuse STFiction for taking a a few of my comments out of context and presenting them here. He has a habit of leaving out important caveats and interpretting whatever he sees in terms of his own biases.
He doesn't have my permission to use my name here and I would appreciate it if...
Justin,
Regarding your comment, "Special relativity postulates the laws of physics have poincare symmetry."
I found a copy of Einstein's orginal paper and I don't see a refernce to poincare in the postulates. Do you have another reference?
*********************
The Rope a Rocket Problem
This is an old problem first posed by JS Bell at a gathering of physicists. A number of physicists didn't get the right answer the first time. Because of this anti-relativists have latched onto it as a proof agianst relativity because relativity physicists sometimes...
cristo is correct. It would be helpful to know more about your background. There are many good sources of this information on the internet. Google general realtivity and you will find all you want.
I will make a couple of comments. Einstien's first breakthrough in this are is special...
I disagree with your teacher also.
It's pretty clear that you understand the idea of radioisotope dating and that is what should count. Unfortunately your teacher chooses to use multiple choice questions rather than essay. This is a poor choice. The ability to explain concepts should be the...
Pervect, You are correct that the CMBR sould be CVBR (V for visible) at some point in the past. The temperture of the universe when the CMBR radiation was released was about 3000K (at least fromone source I have). That's somewhat lower than the surface of the sun, so the light would be pretty...
Einstein's calculus
Tide,
Thanks for the reply. I ran into and former associate who was pretty good with math and he took the same route and showed me the details.
I've had quite a bit of math training but it was long time ago.
(Don't ask. :-) )
It's a personal quirk, but I...
Hello all,
My personal experience with differential equations is from a long time ago. I wold be interested in someone showing me the details of Einstein's differential equation derivation of the Lorentz transformations in "On the Electrodynamics of Moving Bodies" - 1905. i understand...
I have seen some comments in this thread about the Robertson-Mansouri-Sexl framework. I'm not very familiar with the work, but i found this reference to it.
I see that the graphics don't copy so here is the site : http://qom.physik.hu-berlin.de/prl_91_020401_2003.pdf
Modern...
Quote:
Originally Posted by cincirob
Although he doesn't come right out and say it, he is proclaiming that aether doesn't exist (or at least is of no consequence regarding light).
I just popped into nit pick. In fact he does come right out and say it.
Quote:
Originally Posted by A...
Einstein's second postulate states that the speed of light is constant as viewed from any frame of reference. Most of the books on relativity that I have been reading usually ask the reader to accept that fact because proving it is behind the scope of the book. Can anyone help me understand the...