Re: rotation and lightspeed


"The TimeLord" <math-n-physics-not@xxxxxxx> schrieb im Newsbeitrag news:pbadnTo9AbXaa3PanZ2dnUVZ_gWdnZ2d@xxxxxxxxxxxxxx
Am Fri, 28 Mar 2008 13:38:37 +0100 schrieb "Thomas Heger"
<hballo@xxxxxxxxxxx> in fsiosm$a41$01$1@xxxxxxxxxxxxxxxxx:

Hi Ng

in my model of spinning quaternions I get a problem: there is no
notation for time. I have no way to define how fast an object is
spinning. This rotation is assigned to an element of spacetime and I
want to devide it into a massterm and radiation, what is receeding into
space. Somehow I want only one rotation, but how do I get time?? The
radiation part is something like light. If lightspeed is constant, I
would need a kind of clock in this element and hence lose the
possibility of arbitrary speed. Speed of rotation is ill defined, but I
want something like intensity. If now we drop in an observer, we can use
his clock. This would split intensity into an amplitude and constant
rotational speed. This would cause light to move at a contant rate in
respect to that observer. His clock is well defined, cause he can count
events on his timetrack.

First of all, let me say that doing Relativity with quaternions is
ambitious. It can be done, but it's doing it the hard way.

As far as your question goes, there is no simple answer. However if you
do a Google search on "relativity quaternion", the first two hits are
very good at explaining exactly what you are asking for. The rest are
good too, but the ones at the top of the list are best.

Good luck!

Those links are helpfull.
http://home.pcisys.net/~bestwork.1/index.html
is excellent

Look at this:
the timepostulat
http://math.ucr.edu/home/baez/physics/Relativity/SR/clock.html
"The clock postulate is not meant to be obvious, and it can't be proved. It's not merely some kind of trivial result obtained by writing special relativity using non-cartesian coordinates. Rather, it's a statement about the physical world."
Its obviously true if you refer to time as *counting* events. Like those stripes on a highway. The tickrate is affected by the speed but not by the accelaration.
I dont think quaternions are that difficult. You have to compare it to string theory. Thats difficult (and wrong too..)

thanks
Thomas Heger

.

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