Re: THE GENERAL RELATIVITY.

Stamenin skrev:
THE EQUALITY OF INERTIAL AND GRAVITATIONAL MASS AS
AN ARGUMENT FOR THE GENERAL POSTULATE OF RELATIVITY.

At the page 68 of his book Relativity Einstein writes about the General
postulate of relativity. He imagines a large portion of empty space, so
far removed from the stars, that we have before us approximately the
conditions required by the fundamental law of Galilei. It is then
possible to choose a Galileian reference body for this part of space
relative to which points at rest remain at rest and points at motion
continue permanently in uniform rectilinear motion.
From this supposition is visible that Einstein uses the name
Galileian system only to not make use of the Newton's absolute
coordinate system, because between them in this portion of space they
are both of them valid and both are impossible to be determined.
And by there definitions they represent the same thing, a coordinate
system that is staying in a large portion of the cosmos where do not
exist gravitational forces.
In continuation he says: In this large space he puts a chest and a man
in it. To the lid of the chest is fixed a hook with a rope and by an
imaginary being is pulled "upwards". But how does the man in the
chest regard the process, asks Einstein.
The acceleration at the chest will be transmitted to him by the
reaction of the floor of the chest. This situation is complete similar
with the situation in a room at the earth and that there is a
gravitational field.
To the end of the page 69 Einstein says: "Ought we to smile at the
man and say that he errs in his conclusion? I do not believe we ought
to if we wish to remain consistent, we must rather admit that his mode
of grasping the situation violates neither reason nor known mechanical
laws. Even though it is being accelerated with respect to the
"Galileian space" first considered, we can nevertheless regard the
chest as being at rest. We have thus good grounds for extending the
principle of the relativity to include bodies of reference which are
accelerated with respect to each other, and as a result we have gained
a powerful argument for a generalized postulate of relativity".
So we can see that Einstein by using the behavior of the inertial and
the gravitational forces to acct upon every atom of the material body
reached the conclusion that an accelerated coordinate system is an
absolute inertial system.
Evidently this conclusion is in contradiction:
1) With the starting supposition that the chest is in an accelerated
motion.
2) With the principle of the relativity that says that is not valid for
the accelerated systems of coordinates because it is valid only for
systems of coordinates that are in right line motion and with a
constant speed.
3) By this he makes confusion between the gravitational and inertial
forces considering them as being of the same nature. But we know that
that they are different, the gravitational force is an external force
of the body and inertial force is an internal force in the body. The
only thing that is common to these forces is the behavior to act upon
every atom of the material body.
4) And by this he concludes that has gained a powerful argument for the
generalization of this principle of the relativity!!!!
This kind of logic could be named, the negation of the affirmation.
And after that Einstein continues: " We must note carefully that the
possibility of this mode of interpretation rests on the fundamental
property of the gravitational field of giving all bodies the same
acceleration, or, what comes to the same thing, on the law of the
equality of inertial and gravitational mass"!!!
This final argumentation shows how difficult was for Einstein trying
in such a way to trick the reader by using such an illogical
argumentation.
What I can conclude after all that is said, is the fact that the
General theory of the relativity has a tricky base and not powerful
arguments and fundamental laws of the nature.
2/10/2006.

Einstein's book "Relativity" is a popular book, not a scientific
paper.
It can at the very best give you a vague idea of what GR is about.
Believing that you after having read a popular book are competent
to critisize the theory described in that book is a rather naive idea.

And you failed to grasp the basic idea which Einstein tried to mediate.
You say: " the gravitational force is an external force of the body"
Is it?
If it is an external force, why can't you feel it?
The only external force you now can feel is the force
from your chair, pushing you upwards.
If you jump out the window, you feel nothing.
That is because no external forces are acting on you while
you are in free fall.

Paul

.

Relevant Pages

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  • Re: THE GENERAL RELATIVITY.
    ... At the page 68 of his book Relativity Einstein writes about the General ... The acceleration at the chest will be transmitted to him by the ... generalization of this principle of the relativity!!!! ...
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  • Re: THE GENERAL RELATIVITY.
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  • Re: THE GENERAL RELATIVITY.
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