Natural Science Forum / Physics / Relativity / December 2007

Some physics processes are not simply undone by reversing the steps.
For example, a steel rod can be stretched beyond its elastic limit,
and will not return to its original shape by simply reversing the
stretching steps.  Or a piece of clay may be malleable until it is

Consider a rest frame that has 3 lasers at rest on the x-axis at x=-L,
x=0, and x=L.  Let these lasers point in the y direction of this rest
frame.  Let there be a  planar surface just below each laser that is
moving in the y direction, perpendicular to the x-axis, at some speed.

MI5. Persecution Update: Friday 9 July, 1999
Harassment in. Poland, July 1999
And still it continues.... in. my last fax I said that provided MI5 made no
attempts at harassment. during my two-week holiday this summer, or after I

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http://www.edconrad.com

Hi all...
The Riemann Christoffel tensor (R^a_bcd)
is zero when the metric tensors may be
transformed to constants, globally.

"Retic Postings and SPAM"
    There have been multiple accusations that the postings of H.E. Retic
are SPAM. The writer's postings are carefully constructed so as remain
within the commonly accepted rules concerning SPAM, to wit:

"Where Is The Kinetic Energy of a Bullet Stored?"
    When a bullet is fired, an explosive charge imparts kinetic energy to
the bullet. That kinetic energy travels with the bullet and is transferred
to the target when the bullet strikes. The question to be answered is where

This is an applet illustrating time dilation in bodies moving
in the vicinity of the Earth.
http://home.c2i.net/pb_andersen/Satellites.html
Good ol' Newton is used to determine the motion of the bodies,

A rocket ship leaves earth and accelerates to 99% the
speed of light. It then stops accelerating and launches
another rocket that accelerates to 99% the speed of light
relative to the first rocket.

Not being a physicist, but having a srong interest in traditional
logic, I have several questions about Einstein's theory of special
relativity (henceforth "SR") which perhaps some subcriber might be
willing and able to answer. Here they are:

It appears that there will be no valid rebuttal of the logical
refutation that I offered a few days ago.
So far as I can tell, every response to what I called "the logical
refutation" of SR on the thread of that title committed the same

Relativity Geometry
Relativity - Affine Geometry ?
Einstein's special theory of relativity is about measurements between frames
of reference in a state of non acceleration. It is an observation that the

I invite a rebuttal of the following refutation of the special theory
of relativity from its claims about time. I begin with the following
account of the theory extracted from Wikipedia:
"The relativity of simultaneity is the concept that simultaneity is

There is now an update the the FAQ page "What is the experimental basis
of Special Relativity?".
There has been a renaissance in tests of Special Relativity (SR), in
part because considerations of quantum gravity imply that SR may well be

The Autralian philosopher Colin Leslie Dean points out Godels theorems are
invalid for 5 reasons: he uses the axiom ofreducibility- which is
invalid,
he uses the axiom of choice, he constructs impredicative statements -which