The theory of relativity is right

AstroNuclPhysics ® Nuclear Physics - Astrophysics - Cosmology - Philosophy Gravity, black holes and physics

Chapter 2
2.1. Acceleration and gravity from the point of view of special theory of relativity
2.2. Versatility - a basic property and the key to understanding the nature of gravity
2.3. The local principle of equivalence and its consequences
2.4. Physical laws in curved spacetime
2.5. Einstein's equations of the gravitational field
2.6. Deviation and focus of geodesics
2.7. Gravitational waves 2.8.
Specific properties of gravitational energy
2.9. Geometrodynamic system of units
2.10. Experimental verification of the theory of relativity and gravity

2.10. Experimental verification of the theory of relativity and gravity

The excellent structure of special (STR) and general theory of relativity (GTR) fits very well into the current scientific picture of the world, based on increasingly perfect, more objective and credible knowledge of special natural sciences *).
*) On the other hand, the difficulty of understanding the theory of relativity and reconciling some of its principles and conclusions with intuitive experiences from everyday life - with "common sense" - has led and still leads some people to reject it. For non-physicists, these efforts result in false speculation and often bizarre, unfounded and erroneous assumptions. In the field of physics, several alternative theories of gravity were developed, which under commonly available conditions give practically the same results as the general theory of relativity, while under extreme conditions their predictions differ. Testing and selection of various alternative theories is one of the goals of experimental verification in the theory of relativity.
A. Einstein, captivated by the thought perfection of special and especially general theory of relativity, even expressed the sense that if the theory of relativity did not prove to be correct, then "God has made a mistake somewhere in the construction of the Universe!"...

However, physics is an objective and skeptical natural science that accepts its theories as correct only when all their consequences are experimentally verified ("the theory is gray, the green tree of life"). In a number of places in this book, the relevant theoretical concepts and findings are supplemented by mentions of their possible experimental verification. We will not repeat this in more detail here, we will only provide references to the relevant chapters and passages. At this point we will try a brief systematic overview and classification of experimental methods in the theory of relativity from a methodological point of view. We will also mention some experiments that are not mentioned in the basic text of the book.
In terms of the type of studied phenomena in relation to the theory, experimental verification of GTR can be divided into two categories :

From a methodological point of view , experimental verification of the theory of relativity can be performed in basically two ways :

Experimental verification of the special theory of relativity
we will not discuss here - STR is already so perfectly verified that it has become almost an "engineering science" used as a necessary basis in the technical design of eg particle accelerators. Each circulation of a particle (as well as its synchronized passage between electrodes or resonant cavities in a linear accelerator) in such a precisely constructed accelerator "announces" the correctness of the special theory of relativity. Many experiments testing GTR at the same time, as a "by-product", also verify the regularities of STR....

Experimental verification of the general theory of relativity
has taken place almost since the very beginnings of GTR and continues to this day. The so-called classical GTR tests played a very important role in the formation and physical acceptance of the general theory of relativity :

Successful "classical" GTR tests have led to its practically universal acceptance both in the professional physical public and among educated and thoughtful people of various professions and specializations. The newer tests and observations sketched below even more certainly show the role of GTR for the analysis of fundamental physical phenomena both in the laboratory and, above all, for the understanding of colossal astrophysical phenomena. These newer tests include in particular :

Einstein was right: GTR is a correct theory of gravity and spacetime !
In this way, we can conclude simply (and with a little exaggeration) that Einstein's general theory of relativity has successfully passed - and still passes - all previous and new experimental tests; its experimental verification is constantly being refined ...

2.9. Geometrodynamic units   3. Geometry and topology of spacetime

Gravity, black holes and space-time physics :
Gravity in physics General theory of relativity Geometry and topology
Black holes Relativistic cosmology Unitary field theory
Anthropic principle or cosmic God
Nuclear physics and physics of ionizing radiation
AstroNuclPhysics ® Nuclear Physics - Astrophysics - Cosmology - Philosophy

Vojtech Ullmann

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