نتایج جستجو برای: gravitational forces

تعداد نتایج: 129267  

2009
Eric Adelberger

NASA is preparing a giant gravity wave observatory that will be placed in space. The Laser Interferometer Space Antenna (LISA) consists of three spacecraft forming a equilateral triangle with 5 million km armlength. Changes in the armlength of 20pm will be detected. The ends of each interferometer arm are formed by freely floating masses that must be kept inertial (i.e. free of non-gravitationa...

2008

NASA is preparing a giant gravity wave observatory that will be placed in space. The Laser Interferometer Space Antenna (LISA) consists of three spacecraft forming a equilateral triangle with 5 million km armlength. Changes in the armlength of 20pm will be detected. The ends of each interferometer arm are formed by freely floating masses that must be kept inertial (i.e. free of non-gravitationa...

2008
S. S. Gershtein A. A. Logunov M. A. Mestvirishvili

It is shown that the slowing down of the rate of time referencing to the inertial timeleads in the field theory of gravitation to arising of repulsive forces which remove the cos-mological singularity in the evolution of a homogeneous and isotropic universe and stopthe collapse of large masses. It is shown that the slowing down of the rate of time referencing to the inertial tim...

2001
H. R. Dullin

We consider the generalized Störmer Problem that includes the electromagnetic and gravitational forces on a charged dust grain near a planet. For dust grains a typical charge to mass ratio is such that neither force can be neglected. Including the gravitational force gives rise to stable circular orbits that encircle that plane entirely above/below the equatorial plane. The effects of the diffe...

2000
JOSHUA C. LONG ALLISON B. CHURNSIDE

We present the status of an experimental test for gravitational strength forces below 1 mm. Our experiment uses small 1 kilohertz oscillators as test masses, with a stiff counducting shield between them to suppress backgrounds. At the present sensitivity of approximately 10 times gravitational strength, we see no evidence for new forces with interaction ranges between 75 μm and 1 mm. While the ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تحصیلات تکمیلی علوم پایه زنجان - دانشکده فیزیک 1392

in the first part of this thesis we explored wetting and its dynamics for small droplets. first, we showed how a simple feature of water droplets on a surface, i.e. laplace pressure, can be exploited to build a micropump. we investigated capillary pumping in microchannels both experimentally and numerically. putting two droplets of different sizes at the in/outlet of a microchannel, will ge...

2003
Carl H. Gibson

Observations are compared to conflicting predictions about self-gravitational structure formation by the hydro-gravitational theory (HGT) of Gibson 19962003 versus cold-dark-matter hierarchical-clustering-cosmology (CDMHCC) and the Jeans 1902 criterion. According to HGT, gravitational structures form immediately after mass-energy equality by plasma fragmentation at 30,000 years when viscous and...

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