On Thu, Feb 27, 2014 at 1:01 PM, leaking pen <[email protected]> wrote:
> YOU said falls down. That assumes a mass and direction. Your statement > of the experiment assumes a massive body being accelerated away from. if > we are talking about in free space, then that is different. > In the acceleration, it LOOKS to be falling, but obviously it has been let go of. Also I never said a massive body, far from it, an elevator box being accelerated by some undisclosed means. I do need to ensure that the argument is crystal clear and avoids and confusion, I thought I had that. > > However, dilation is based on velocity, not acceleration. > Ok, So I guess I need to ensure that if I am going to make the argument about General Relativity and the equivalence principle, the reader must understand the concept that time dilates in a gravity field, and from acceleration since it is equivalent. Or just accept that some who have skipped General Relativity all together won't get it. I'm PRETTY positive on this one, and a cursory google search shows me not > to have gone nuts in this regards. > Wiki awkwardly agrees with me, I had to read this line several time to be sure I was right. According to General Relativity, gravitational time dilation is copresent with the existence of an accelerated reference frame. Here is wikipedia on the subject: - According to General Relativity, gravitational time dilation is copresent with the existence of an accelerated reference frame<http://en.wikipedia.org/wiki/Accelerated_reference_frame> . - The speed of light in a locale is always equal to *c* according to the observer who is there. The stationary observer's perspective corresponds to the local proper time. Every infinitesimal region of space time may have its own proper time that corresponds to the gravitational time dilation there, where electromagnetic radiation and matter may be equally affected, since they are made of the same essence[5]<http://en.wikipedia.org/wiki/Gravitational_time_dilation#cite_note-5> (as shown in many tests involving the famous equation [image: E=mc^2]). Such regions are significant whether or not they are occupied by an observer. A time delay <http://en.wikipedia.org/wiki/Shapiro_effect> is measured for signals that bend near the Sun, headed towards Venus, and bounce back to Earth along a more or less similar path. There is no violation of the speed of light in this sense, as long as an observer is forced to observe only the photons which intercept the observing faculties and not the ones that go passing by in the depths of more (or even less) gravitational time dilation. - If a distant observer is able to track the light in a remote, distant locale which intercepts a time dilated observer nearer to a more massive body, he sees that both the distant light and that distant time dilated observer have a slower proper time clock than other light which is coming nearby him, which intercepts him, at *c*, like all other light he *really* can observe. When the other, distant light intercepts the distant observer, it will come at c from the distant observer's perspective.
