26,104 research outputs found
Gladstone, Religious Freedom and Practical Reasoning
W.E. Gladstone’s changing and inconsistent views on religious oaths and
established churches present an intriguing puzzle. This article compares and contrasts
his early and later stances on these topics with the purpose of evaluating the place of
practical judgments in his arguments. This exploration reveals that the prevailing
description of Gladstone’s views, which privileges the role practicality played in his
later support for a more liberal set of policies governing church–state relations, does
not explain the changes and inconsistencies in his position as well as does a description
that emphasizes the changes and continuities in his fundamental philosophy. In
conclusion, connections are suggested between this explanation of Gladstone’s views
and theoretical considerations regarding the development of liberal freedoms
Satellite gravitational orbital perturbations and the gravitomagnetic clock effect
In order to detect the gravitomagnetic clock effect by means of two
counter-orbiting satellites placed on identical equatorial and circular orbits
around the Earth with radius 7000 km their radial and azimuthal positions must
be known with an accuracy of delta r =10^{-1} mm and delta phi =10^{-2} mas per
revolution. In this work we investigate if the radial and azimuthal
perturbations induced by the dynamical and static parts of the Earth' s
gravitational field meet this requirements. While the radial direction is
affected only by harmonic perturbations with periods up to some tens of days,
the azimuthal location is perturbed by a secular drift and very long period
effects.It results that the present level of accuracy in the knowledge both of
the Earth solid and ocean tides, and of the static part of the geopotential
does not allow an easy detection of the gravitomagnetic clock effect, at least
by using short arcs only.Comment: 18 pages, 4 figures. Submitted to Int. Journal of Mod. Phys.
FCNC and non-standard soft-breaking terms in weak-scale Supersymmetry
We study the inclusion of non-standard soft-breaking terms in the minimal
SUSY extension of the SM, considering it as a model of weak-scale SUSY. These
terms modify the sfermion mass matrices, which can induce new sources of
flavour violation. Bounds on the new soft parameters can be estimated from
current data. The results are then applied to evaluate FCNC top decay t -> c +
hi (hi= h,H,A). Implications of complex soft parameters for CP violation are
also addressed.Comment: Revised version (8 pages), title changed and references corrected.
Presented at VIII Mexican Workshop on Particles and Fields, Merida (1999
A Gravitomagnetic Effect on the Orbit of a Test Body due to the Earth's Variable Angular Momentum
The well known general relativistic Lense-Thirring drag of the orbit of a
test particle in the stationary field of a central slowly rotating body is
generated, in the weak-field and slow-motion approximation of General
Relativity, by a gravitomagnetic Lorentz-like acceleration in the equations of
motion of the test particle. In it the gravitomagnetic field is due to the
central body's angular momentum supposed to be constant. In the context of the
gravitational analogue of the Larmor theorem, such acceleration looks like a
Coriolis inertial term in an accelerated frame. In this paper the effect of the
variation in time of the central body's angular momentum on the orbit of a test
mass is considered. It can be shown that it is analogue to the inertial
acceleration due to the time derivative of the angular velocity vector of an
accelerated frame. The possibility of detecting such effect in the
gravitational field of the Earth with LAGEOS-like satellites is investigated.
It turns out that the orbital effects are far too small to be measured.Comment: LaTex2e, 1 table, no figures, 7 page
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