Philosophy Dictionary of Arguments

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Gravitation: Gravitation is a fundamental force of nature that attracts any two objects with mass. It is the weakest of the four fundamental forces, but it is also the most pervasive, acting on all objects in the universe. See also Force.
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Annotation: The above characterizations of concepts are neither definitions nor exhausting presentations of problems related to them. Instead, they are intended to give a short introduction to the contributions below. – Lexicon of Arguments.

 
Author Concept Summary/Quotes Sources

Bernulf Kanitscheider on Gravitation - Dictionary of Arguments

Gravity/Newton: Law of action at a distance:

K = γ m1 m2/r².

This can be written in the form of an equation for the potential φ:

Δφ = 4πγρ.

Potential φ: Feldstärke der Gravitation. Differenzen des Potentials leisten Arbeit!
The potential at a point is determined to an integral for 0 - infinity. This degenerates at
r > infinity to an indefinite expression.
But since we observe clear differences of the potential (field strength of gravity), the universe must have a different structure.
This leads to the "gravitation paradox" of classical cosmology.
Solution: Assumption of the cosmological constant λ.
Then the Poisson-equation is transformed into Δφ = 4πγρ+λφ.
Problem: local untestability: because the recoil force caused by it would be measurable only in very distant areas.

Gravity/space/equilibrium/cosmology/kanitscheider: only in a universe without center and edge the gravitational effects of all bodies can compensate each other!
With an island distribution an agglomeration of matter would have to occur soon, whereby the potential gravitational energy is converted into radiation.
To avoid this, one would have to grant the bodies or the galaxy gas stronger own velocity.
Problem: by the so strong movement the islands would dissolve soon. It would lead to the evaporation and desolation of the universe.
I 143
Gravitational Paradox/Olbers Paradox/Charlier: ingenious solution: hierarchical arrangement of stepwise concentric aggregates of celestial bodies, where the lower order systems always make up the elements of the higher ones. This eliminates the need for an unstable balance of forces. The density ρ becomes lower and lower.
1st Vs: as a result of inhomogeneity, no sampled volume is large enough to be typical. The cosmological principle that a finite part of the infinite universe is representative in terms of large-scale structures is not applicable.
2nd Vs: the hierarchical conception requires an asymptotically flat space structure, which violates the idea of dependence of the spacetime metric on matter content. Unsatisfactory for relativistic conceptions.
3rd Vs: in conflict with observed background radiation.
>Olbers paradox
.
I 174
Gravity/Canite separator: The local simulatability of gravity by acceleration is a significant difference to electromagnetism. Masses are neutral, charges are accelerated by an external according to their charge (positive/negative).
Gravitation/Einstein/Kanitscheider: Einstein's theory does not fulfill the superposition principle, according to which the gravitational effect of two bodies can be put together additively.
The metric field with its curvature possesses also mass energy! This provides for a self-interaction of the gravitation!
That means that the graviton is "charged", while the carrier of the electromagnetic interaction, the photon, is electrically neutral. Space curvature/wave/channel separator: also a gravitational wave has, if it has separated from its source, energy and momentum, acts accordingly as source and delivers a contribution to the space curvature.
I 182
Gravitation/Cosmology/Kanitscheider: Gravitation is not shieldable in contrast to electromagnetism. Therefore it is the only interaction which is used to explain the universe.
>Space Curvature/Kanitscheider.

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Explanation of symbols: Roman numerals indicate the source, arabic numerals indicate the page number. The corresponding books are indicated on the right hand side. ((s)…): Comment by the sender of the contribution. Translations: Dictionary of Arguments
The note [Concept/Author], [Author1]Vs[Author2] or [Author]Vs[term] resp. "problem:"/"solution:", "old:"/"new:" and "thesis:" is an addition from the Dictionary of Arguments. If a German edition is specified, the page numbers refer to this edition.

Kanitsch I
B. Kanitscheider
Kosmologie Stuttgart 1991

Kanitsch II
B. Kanitscheider
Im Innern der Natur Darmstadt 1996


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Ed. Martin Schulz, access date 2024-04-25
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