Howdy all
There's a potential meteorite fall in Canada that may be worth
y'all's attention. And yes, "y'all's" is a word.
Fireballs occur on a regular basis and I try not to post to the
list very often, but this one is especially interesting.
http://radarmeteorites.wordpress.com/2011/11/15/western-ontario-09-nov-2011-0936-utc/
Cheers,
Marc Fries
On 11/20/11 9:21 AM, Steve Dunklee wrote:
This article contains gps info and accuracy . It states it depends on the
earths movement and other factors and gives an accuracy of 14 nanoseconds. A 60
nanosecond difference in measurements is way off the accuracy of the gps clocks.
http://en.wikipedia.org/wiki/Effects_of_relativity_on_GPS#Relativity
cheers
Steve Dunklee
--- On Sat, 11/19/11, JoshuaTreeMuseum<[email protected]> wrote:
From: JoshuaTreeMuseum<[email protected]>
Subject: Re: [meteorite-list] Second experiment confirms faster-than-light
particles
To: [email protected]
Date: Saturday, November 19, 2011, 2:07 AM
----- Original Message ----- From: "Matson, Robert D."
<[email protected]>
To: "JoshuaTreeMuseum"<[email protected]>;
<[email protected]>
Sent: Friday, November 18, 2011 6:44 PM
Subject: RE: [meteorite-list] Second experiment confirms
faster-than-light particles
Hi Phil,
It was my understanding that the mystery of the CERN
faster-than-
light-speed neutrino result was solved over a month ago:
failure
to account for the relativistic motion of the GPS clocks
used to
time the neutrinos.
GPS satellites orbit in planes inclined 55 degrees relative
to
the equator, coincidentally somewhat parallel to the
neutrino
flight path bearing on the ground. From the satellite's
perspective,
both the positions of the neutrino source and the neutrino
detector
are changing: in this particular case, from the perspective
of the
GPS clock, the detector is moving towards the neutrino
source, and
consequently the distance travelled by the particles -- as
measured
in the frame of the clock -- is shorter than the distance
measured
on the ground. As a result, the neutrinos should arrive
about 32
nanoseconds early: an amount that must be doubled because
the same
error occurs at each end of the experiment. So the total
correction
is 64 nanoseconds: almost exactly what the OPERA team
observed.
If they ran the experiment a second time and got the same
result,
it seems to me that it is only confirming a prediction of
special relativity. --Rob
---------------------
It seems unbelievable that the relativistic satellite
motion has not been brought to their attention. I mean if
you guys know about it, wouldn't they? I've also read
elsewhere about this effect and how it could be skewing the
results. I find it hard to believe they don't know about
this and would not make the necessary corrections.
Phil Whitmer
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