Glenn Møller-Holst wrote:
> Frame-dragging bekræftet med usikkerhed på 15%:
>
>
http://einstein.stanford.edu/
>
> The Gravity Probe B experiment.
> "Testing Einstein's Universe"
> Science Results - NASA Final Report December 2008:
>
http://einstein.stanford.edu/content/final_report/GPB_Final_NASA_Report-020509-web.pdf
>
> Citat: "...[Sec2:18]...A non-zero WE gyroscope drift establishes the
> frame-dragging effect with a present statistical uncertainty of 15%. The
> NS drift component provides better than a 0.5% measurement of the
> geodetic effect..."
>
> Kommentarer?
>
> hilsen
>
> Glenn
PS - lidt om Frame-dragging og geodetic effect:
http://en.wikipedia.org/wiki/Frame-dragging
Citat: "...
Lense and Thirring predicted that the rotation of an object would alter
space and time, dragging a nearby object out of position compared to the
predictions of Newtonian physics. The predicted effect is small—about
one part in a few trillion. In order to detect it, it is necessary to
look at a very massive object, or build an instrument that is very
sensitive. More generally, the subject of field effects caused by moving
matter is known as gravitomagnetism.
....
This also means that light traveling in the direction of rotation of the
object will move around the object faster than light moving against the
rotation as seen by a distant observer. It is now the best-known effect,
partly thanks to the Gravity Probe B experiment.
...."
http://en.wikipedia.org/wiki/Geodetic_effect
Citat: "...
The geodetic effect represents the effect of the curvature of spacetime,
predicted by general relativity, on a spinning, moving body.
...."
hilsen
Glenn