9,649 research outputs found
Fictorians: historians who \u27lie\u27 about the past, and like it
Debates about history and fiction tend to pitch novelist against historian in a battle over who owns or best represents the past. This article posits that things are not quite so dichotomous: novelists write non-fiction histories, and historians even sometimes write novels. In fact, these latter seem, anecdotally, to be increasing in number in recent decades. The author approached some of these historians to find out why they have turned to writing fictionalised versions of the past to complement, or sometimes replace, their non-fiction publications. For the sake of clarity, in the article I have playfully dubbed the historians who write historical fiction as âfictoriansâ. The article considers their responses within wider discussions about history and fiction, and reflects briefly upon the meaning of this âfictional turnâ for the future of the history discipline
Gravitomagnetic Fields in Rotating Superconductors to Solve Tate's Cooper Pair Mass Anomaly
Superconductors have often been used to claim gravitational anomalies in the
context of breakthrough propulsion. The experiments could not be reproduced by
others up to now, and the theories were either shown to be wrong or are often
based on difficult to prove assumptions. We will show that superconductors
indeed could be used to produce non-classical gravitational fields, based on
the established disagreement between theoretical prediction and measured
Cooper-pair mass in Niobium. Tate et al failed to measure the Cooper-pair mass
in Niobium as predicted by quantum theory. This has been discussed in the
literature without any apparent solution. Based on the work from DeWitt to
include gravitomagnetism in the canonical momentum of Cooper-pairs, the authors
published a number of papers discussing a possibly involved gravitomagnetic
field in rotating superconductors to solve Tate's measured anomaly. Although
one possibility to match Tate's measurement, a number of reasons were developed
by the authors over the last years to show that the gravitomagnetic field in a
rotating quantum material must be different from its classical value and that
Tate's result is actually the first experimental sign for it. This paper
reviews the latest theoretical approaches to solve the Tate Cooper-pair anomaly
based on gravitomagnetic fields in rotating superconductors
Generation of Closed Timelike Curves with Rotating Superconductors
The spacetime metric around a rotating SuperConductive Ring (SCR) is deduced
from the gravitomagnetic London moment in rotating superconductors. It is shown
that theoretically it is possible to generate Closed Timelike Curves (CTC) with
rotating SCRs. The possibility to use these CTC's to travel in time as
initially idealized by G\"{o}del is investigated. It is shown however, that
from a technology and experimental point of view these ideas are impossible to
implement in the present context.Comment: 9 pages. Submitted to Classical and Quantum Gravit
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