Re: [time-nuts] Are there limits to the accuracy of clocks?

2006-03-29 Thread Ulrich Bangert
Hal, i guess a physicist's answer to your question would be something like that: Question: What is Planck length? What is Planck time? Answer: The Planck length is the scale at which classical ideas about gravity and space-time cease to be valid, and quantum effects dominate. This is the

Re: [time-nuts] Are there limits to the accuracy of clocks?

2006-03-29 Thread Don Moss
On Wed, 29 Mar 2006 Ulrich Bangert wrote: Hal, i guess a physicist's answer to your question would be something like that: Question: What is Planck length? What is Planck time? Answer: The Planck length is the scale at which classical ideas about gravity and space-time cease to be

Re: [time-nuts] Are there limits to the accuracy of clocks?

2006-03-29 Thread Bill Janssen
Don Moss wrote: On Wed, 29 Mar 2006 Ulrich Bangert wrote: Hal, i guess a physicist's answer to your question would be something like that: Question: What is Planck length? What is Planck time? Answer: The Planck length is the scale at which classical ideas about gravity and space-time

Re: [time-nuts] Are there limits to the accuracy of clocks?

2006-03-29 Thread Mike S
At 06:45 PM 3/29/2006, Don Moss wrote... The Planck length is the scale at which classical ideas about gravity and space-time cease to be valid, and quantum effects dominate. This is the ?quantum of length?, the smallest measurement of length with any meaning. The Planck time is the time it

[time-nuts] ...Your toughts on the Trimble Resolution T?

2006-03-29 Thread Normand Martel
Hi... I seriously think about buying a Trimble Resolution T timing GPS receiver for a GPS disciplined OCXO frequency standard (Brooks Shera W5OJM's project). Have someone worked with this receiver? The claimed maximum 1PPS to UTC error is 15ns, the best figure i saw yet on GPS receivers, and far

Re: [time-nuts] ...Your thoughts on the Trimble Resolution T?

2006-03-29 Thread Tom Van Baak
Hi... I seriously think about buying a Trimble Resolution T timing GPS receiver for a GPS disciplined OCXO frequency standard (Brooks Shera W5OJM's project). Have someone worked with this receiver? The claimed maximum 1PPS to UTC error is 15ns, the best figure i saw yet on GPS

Re: [time-nuts] Are there limits to the accuracy of clocks?

2006-03-29 Thread Bill Hawkins
Didier, You can't walk the Planck, although I am uncertain whether it is because the Planck is too small or you are too big. Surely, your engineering judgement would have shown you the impossibility of it all. :-) While we have been discussing stuff that is about 10E-20 below what we can