Re: [time-nuts] Question re neutrinos and GPS

2012-01-08 Thread Javier Serrano
On Sat, Jan 7, 2012 at 11:51 AM, Attila Kinali att...@kinali.ch wrote: On Fri, 6 Jan 2012 15:55:12 -0800 Tom Van Baak t...@leapsecond.com wrote: Hopefully all this GPS-neutrino talk will calm down when other methods to validate the synchronization of the clocks at CERN and LNGS are done

Re: [time-nuts] Question re neutrinos and GPS

2012-01-08 Thread iov...@inwind.it
On Jan 8 2012 14:02 javier.serrano.par...@gmail.com wrote: Tom Van Baak t...@leapsecond.com wrote: Hopefully all this GPS-neutrino talk will calm down when other methods to validate the synchronization of the clocks at CERN and LNGS are done (e.g., direct fiber or traveling Cs clocks).

Re: [time-nuts] Question re neutrinos and GPS

2012-01-08 Thread Magnus Danielson
On 01/08/2012 02:02 PM, Javier Serrano wrote: On Sat, Jan 7, 2012 at 11:51 AM, Attila Kinaliatt...@kinali.ch wrote: On Fri, 6 Jan 2012 15:55:12 -0800 Tom Van Baakt...@leapsecond.com wrote: Hopefully all this GPS-neutrino talk will calm down when other methods to validate the synchronization

Re: [time-nuts] Question re neutrinos and GPS

2012-01-08 Thread Tom Van Baak
what about swapping the Cs clocks between CERN and LNGS without re- synchronizing them, and repeating the neutrino test? Antonio I8IOV Right, typically when you perform a traveling clock experiment you don't touch the clocks -- you don't need to synchronize or resynchronize anything. The key

Re: [time-nuts] Question re neutrinos and GPS

2012-01-08 Thread Bill Hawkins
-Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Tom Van Baak Sent: Sunday, January 08, 2012 9:11 AM To: iov...@inwind.it Cc: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Question re neutrinos and GPS what

Re: [time-nuts] Question re neutrinos and GPS

2012-01-08 Thread John Ackermann N8UR
: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Tom Van Baak Sent: Sunday, January 08, 2012 9:11 AM To: iov...@inwind.it Cc: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Question re neutrinos and GPS what about swapping the Cs

Re: [time-nuts] Question re neutrinos and GPS

2012-01-08 Thread Magnus Danielson
Hi Bill, On 01/08/2012 06:55 PM, Bill Hawkins wrote: Tom, I had to look up traveling clock synchronization to get a better understanding, and found this link: http://www.newtonphysics.on.ca/einstein/chapter9.html The idea that Qz (time on the quartz clock, no?) drops out in the subtraction

Re: [time-nuts] Question re neutrinos and GPS

2012-01-08 Thread Tom Van Baak
The idea that Qz (time on the quartz clock, no?) drops out in the subtraction seems to me to require Qz to be invariant. Hi Bill, You might be making this more complicated intended. Antonio was asking about *resynchronizing* clocks. Here's another example. You're at home at 7:45 AM and see

Re: [time-nuts] Question re neutrinos and GPS

2012-01-08 Thread Mike S
On 1/8/2012 5:54 PM, Tom Van Baak wrote: Here's another example. You're at home at 7:45 AM and see that your wristwatch is 7 minutes ahead of your kitchen clock. You get to work at 8:30 AM and notice that your wristwatch is 5 minutes ahead of your office clock. What conclusions can you

Re: [time-nuts] Question re neutrinos and GPS

2012-01-07 Thread Attila Kinali
On Fri, 6 Jan 2012 15:55:12 -0800 Tom Van Baak t...@leapsecond.com wrote: Hopefully all this GPS-neutrino talk will calm down when other methods to validate the synchronization of the clocks at CERN and LNGS are done (e.g., direct fiber or traveling Cs clocks). According to [1] they already

[time-nuts] Question re neutrinos and GPS

2012-01-06 Thread iov...@inwind.it
So far it seemed to me that the overall standpoint of the authoritative time- nuts list is that the GPS timing and geografical survey of the OPERA experiment are good (and hence experimental errors or artifacts, if any, should be searched for elsewhere). I myself, not being a deep GPS expert,

Re: [time-nuts] Question re neutrinos and GPS

2012-01-06 Thread bg
Hi Antonio, The GPS is very unlikely to give an accurate speed for anything near the speed of light - for there are many known effects not taken into account by the GPS protocol. In the end the OPERA experiment may alert people to the assumptions and approximations implicit in the GPS.

Re: [time-nuts] Question re neutrinos and GPS

2012-01-06 Thread Magnus Danielson
Antonio, On 01/07/2012 12:20 AM, iov...@inwind.it wrote: So far it seemed to me that the overall standpoint of the authoritative time- nuts list is that the GPS timing and geografical survey of the OPERA experiment are good (and hence experimental errors or artifacts, if any, should be searched

Re: [time-nuts] Question re neutrinos and GPS

2012-01-06 Thread Magnus Danielson
On 01/07/2012 12:37 AM, b...@lysator.liu.se wrote: Hi Antonio, The GPS is very unlikely to give an accurate speed for anything near the speed of light - for there are many known effects not taken into account by the GPS protocol. In the end the OPERA experiment may alert people to the

Re: [time-nuts] Question re neutrinos and GPS

2012-01-06 Thread Jim Lux
On 1/6/12 3:20 PM, iov...@inwind.it wrote: So far it seemed to me that the overall standpoint of the authoritative time- nuts list is that the GPS timing and geografical survey of the OPERA experiment are good (and hence experimental errors or artifacts, if any, should be searched for

Re: [time-nuts] Question re neutrinos and GPS

2012-01-06 Thread Tom Van Baak
Now I read on another list, in which the subject is not timekeeping and from a respectable author, that: The GPS is very unlikely to give an accurate speed for anything near the speed of light - for there are many known effects not taken into account by the GPS protocol. In the end the OPERA

Re: [time-nuts] Question re neutrinos and GPS

2012-01-06 Thread Mike S
On 1/6/2012 6:20 PM, iov...@inwind.it wrote: Now I read on another list, in which the subject is not timekeeping and from a respectable author, that: The GPS is very unlikely to give an accurate speed for anything near the speed of light.. Respectable author? What, does he think they're

Re: [time-nuts] Question re neutrinos and GPS

2012-01-06 Thread Azelio Boriani
Amen. On Sat, Jan 7, 2012 at 1:04 AM, Mike S mi...@flatsurface.com wrote: On 1/6/2012 6:20 PM, iov...@inwind.it wrote: Now I read on another list, in which the subject is not timekeeping and from a respectable author, that: The GPS is very unlikely to give an accurate speed for anything

Re: [time-nuts] Question re neutrinos and GPS

2012-01-06 Thread Azelio Boriani
And let me say this in italian: Antonio, ma chi ha detto 'sta fesseria? On Sat, Jan 7, 2012 at 1:24 AM, Azelio Boriani azelio.bori...@screen.itwrote: Amen. On Sat, Jan 7, 2012 at 1:04 AM, Mike S mi...@flatsurface.com wrote: On 1/6/2012 6:20 PM, iov...@inwind.it wrote: Now I read on

Re: [time-nuts] Question re neutrinos and GPS

2012-01-06 Thread Azelio Boriani
...I cannot find that weird text using Google... Antonio, ti ricordi il tunnel della Gelmini? Ecco e' la stessa cosa! On Sat, Jan 7, 2012 at 1:30 AM, Azelio Boriani azelio.bori...@screen.itwrote: And let me say this in italian: Antonio, ma chi ha detto 'sta fesseria? On Sat, Jan 7, 2012 at

Re: [time-nuts] Question re neutrinos and GPS

2012-01-06 Thread Hal Murray
The GPS is very unlikely to give an accurate speed for anything near the speed of light - for there are many known effects not taken into account by the GPS protocol. In the end the OPERA experiment may alert people to the assumptions and approximations implicit in the GPS. I can't see