|Time travel: A time travel is the traveling of one or more subjects from their respective present into a time which, from the point of view of these subjects, lies in the past or in the future. It is usually assumed that the traveler maintains their age and biological condition. Therefore, in the case of time travels, a hierarchy of several times is to be assumed, namely the proper time of the travelers which determines their biological age, the duration of the procedure of the travel and the historical time of the "destination". Logical problems associated with time travel are inter alia contradictions related to the fact that events of the past could be influenced after they occurred. See also time, time reversal, symmetry, time arrow, grandfather paradox._____________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. |
|Gribbin II 210
Time travel/relativity theory: those time travels that are allowed by relativity theory will lead to a distortion of the the structure of space-time so that the time axis in a local area in a direction corresponds to one of the three spatial directions in the undistorted area. An originally spatial direction plays the role of the time. - In the vicinity of a particular pulsar, it must be so.
Gribbin II 217
Time/existence/backward/time reversal/Gribbin: it may be that a non-existent photon creates a positron-electron pair, which then annihilates itself to produce the photon that the two particles has first of all created them - ((s) Because of the photon time does not pass, there is no difference between past and future)._____________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. The note [Author1]Vs[Author2] or [Author]Vs[term] is an addition from the Dictionary of Arguments. If a German edition is specified, the page numbers refer to this edition.
Schrödinger’s Kitten and the Search for Reality, London 1995
Schrödingers Kätzchen und die Suche nach der Wirklichkeit Frankfurt/M. 1998
In Search of Schrödinger’s Cat, London 1984
Auf der Suche nach Schrödingers Katze. Quantenphysik und WIrklichkeit München 1987