Philosophy Dictionary of ArgumentsHome | |||
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Tidal force: In cosmology, the tidal force is the force that stretches or compresses objects due to the gravitational gradient. It occurs when the gravitational pull on one side of an object differs significantly from the gravitational pull on the other side, resulting in a stretching effect on extended objects such as galaxies or disrupting the structure of celestial bodies such as stars or planets._____________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 |
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Bernulf Kanitscheider on Tidal Force - Dictionary of Arguments
I 174 Tidal force: in fields affected by real gravitational forces, bodies do not fall on parallel geodesics, but on converging trajectories.(i.e. lines intersecting a given set of curves at equal angles). As a result, a body is stretched in length. The effect goes back to the different strength of the attacking gravity, which decreases with the square of the distance. This (differential) tidal force is not transformable away! One can say that the tidal force is the objectively real element of RT! There is no reference frame which can transform it away. >Relativity theory, >Gravitation/Einstein, >Objectivity. I 175 Tidal force/Kanitscheider: The effect is separated from the sources. It is an independent change of the space-time. Visible effect! However, in our previous way of speaking there is an idealization: Gravitation/Einstein/Kanitscheider: his theory does not fulfill the superposition principle, according to which the gravitational effect of two bodies can be put together additively._____________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 |