[time-nuts] The GPS velocity of light versus neutrinos

[Magnus Danielson]

On 11/22/2011 03:17 PM, Bob Camp wrote:
>
> On Nov 21, 2011, at 10:57 PM, Jim Lux wrote:
>
>> On 11/21/11 5:15 PM, Bob Camp wrote:
>>> Hi
>>>
>>> You can have a surveyor come out and locate your gizmo to sub one inch accuracy for a lot less than a clock trip costs. A one meter ( or 3 ns) error would be pretty large these days. Both have been demonstrated / proven so often that they aren't really open to challenge.
>>>
>>> The total error is a sum of lots of things. Location and time of day are the easy stuff...
>>
>>>> OK, So assume an unlikely huge position uncertainly of one meter.    On top of
>>>> that let's assume the surveyor got it wrong too and missed by a full
>>>> meter.    Both of these added together can only account for about 10%
>>>> of what they saw.   Light moves across one meter in about 3nS   You
>>>> need to explain 60nS  If the result is because of uncertainty in the
>>>> location then the we are talking about 20 meters of position error.
>>
>>
>>
>> in the first paper, the distance uncertainty was given as 20cm
>
>
> Of which the survey likely contributed next to nothing and stuff like earth tides contributed the majority of the error ….

Earth tides account for 2-3 dm of rise, not really contributing much to 
the 18 m unaccounted for. Also consider that experiment ran for 3 years.

Cheers,
Magnus