6,098 research outputs found
Testing Single-Parameter Classical Standpoint Cosmology
Experimental tests of homogeneous-universe classical standpoint cosmology are
proposed after presentation of conceptual considerations that encourage this
radical departure from the standard model. Among predictions of the new model
are standpoint age equal to Hubble time, energy-density parameter , and relations between redshift, Hubble-scale distribution of
matter and galaxy luminosity and angular diameter. These latter relations
coincide with those of the standard model for zero deceleration. With eye to
further tests, geodesics of the non-Riemannian standpoint metric are explicitly
given. Although a detailed thermodynamic ``youthful-standpoint'' approximation
remains to be developed (for particle mean free path small on standpoint
scale), standpoint temperature depending only on standpoint age is a natural
concept, paralleling energy density and redshift that perpetuates thermal
spectrum for cosmic background radiation. Prospects for primordial
nucleosynthesis are promising.Comment: 27 pages, latexed, math_macros.tex used, full postscript available
from: http://theor1.lbl.gov/www/theorgroup/papers/37162.p
Weak Classical-Gravity Source in Standpoint Cosmology
Guided by a linearized approximation to Einstein theory, an interim
prescription for ``weak source of gravity'' - - in ``particle'' energy-momentum
distributed along standpoint light cone - - is formulated for (classical)
standpoint cosmology.Comment: 11 pages, uses math_macros.tex, late
Ground-based testing of the dynamics of flexible space structures using band mechanisms
A suspension system based on a band mechanism is studied to provide the free-free conditions for ground based validation testing of flexible space structures. The band mechanism consists of a noncircular disk with a convex profile, preloaded by torsional springs at its center of rotation so that static equilibrium of the test structure is maintained at any vertical location; the gravitational force will be directly counteracted during dynamic testing of the space structure. This noncircular disk within the suspension system can be configured to remain unchanged for test articles with the different weights as long as the torsional spring is replaced to maintain the originally designed frequency ratio of W/k sub s. Simulations of test articles which are modeled as lumped parameter as well as continuous parameter systems, are also presented
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