[Amps] "Conventional" current flow

[Jim Garland]

That's exactly right, Paul. As I recall, the researchers could locate the
black holes as somewhere in the southern hemisphere, but it was just
fortuitous that they weren't equidistant from the detectors. Interestingly,
had they been exactly equidistant, then the researchers wouldn't know for
sure that the gravity waves weren't traveling at an infinite speed. I
believe a third detector in Australia, and possibly one on the Indian
subcontinent are being built which will allow scientists to pinpoint the
precise direction in the sky of these events. BTW, my friend who works on
the experiment told me they've now seen other events coming in, from other
sources (e.g., supernova, quasars, pulsars, etc.)
73,
Jim W8ZR

> -----Original Message-----
> From: Amps [mailto:amps-bounces at contesting.com] On Behalf Of Paul
Christensen
> Sent: Monday, November 21, 2016 10:08 AM
> To: amps at contesting.com
> Subject: Re: [Amps] "Conventional" current flow
> 
> Jim,
> 
> Last comment from me on this very interesting subject.  Is the 7 mS time
difference due
> exclusively to the arrival angle in the sky of the gravity wave between
the two detectors?
> IOW, if at the moment the wave chirp reached earth, and if the two
detectors were exactly
> equidistant from the wave arrival point, then I would expect a zero or
near zero time
> difference between detectors.  For example, consider two detectors, one at
each opposite
> tangent to the earth from the collision.  That should yield a time
> delta of exactly zero?
> 
> Paul, W9AC
> 
> -----Original Message-----
> From: Jim Garland [mailto:4cx250b at miamioh.edu]
> Sent: Monday, November 21, 2016 11:46 AM
> To: 'Paul Christensen' <w9ac at arrl.net>; amps at contesting.com
> Subject: RE: [Amps] "Conventional" current flow
> 
> Hi Paul,
> I believe the detectors were built specifically to detect gravity waves
generally, not
> specifically colliding black holes. The detectors took about half a
century to build and
> debug!  When the scientists initially fired up the two detectors, they
were still in a test and
> calibration mode to verify everything was working properly. They expected
that gravity
> waves would be so weak they'd have to do lots of statistical averaging to
extract them from
> the noise. But then, this huge chirp came in on one detector, and then
seven milliseconds
> later it arrived at the second detector.  The waveforms of the two signals
were identical, and
> they were so strong you can hear the chirp over a loudspeaker. For the
scientists and
> engineers who had devoted their entire careers to this one experiment, it
was an enormously
> emotional moment.
> 73,
> Jim W8ZR
> 
> > -----Original Message-----
> > From: Amps [mailto:amps-bounces at contesting.com] On Behalf Of Paul
> Christensen
> > Sent: Monday, November 21, 2016 09:12 AM
> > To: amps at contesting.com
> > Subject: Re: [Amps] "Conventional" current flow
> >
> > >"The recordings of the chirp waveform are also in complete agreement
> > >with
> > general relativity predictions about black holes. By the way, these
> detectors are huge objects
> > several Km across and cost more than a billion dollars."
> >
> > Jim,
> >
> > I've not yet read the information in the link you provided but it
> > should
> make for good
> > Thanksgiving holiday reading material.  Question:  were the detectors
> constructed for the
> > purpose of observing and measuring the collision of two black holes,
> > or is
> it a part of larger-
> > scale research and the collision is one of many events expected to be
> discovered by the
> > custom detectors?
> >
> > Paul, W9AC
> >
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