Sujet : Re: The old definition of second is winning against SI idiocy
De : mlwozniak (at) *nospam* wp.pl (Maciej Woźniak)
Groupes : sci.physics.relativityDate : 29. Jun 2025, 06:14:46
Autres entêtes
Organisation : NewsDemon - www.newsdemon.com
Message-ID : <184d6b8dfa34a4a3$310447$2042034$c2265aab@news.newsdemon.com>
References : 1 2 3 4
User-Agent : Mozilla Thunderbird
On 6/28/2025 11:34 PM, Python wrote:
Le 28/06/2025 à 23:29, Maciej Woźniak a écrit :
On 6/28/2025 9:22 PM, Paul B. Andersen wrote:
> Den 27.06.2025 10:34, skrev Maciej Woźniak:
>> On 4/10/2025 10:41 PM, Paul.B.Andersen wrote:
>>
>> > GPS clocks are adjusted down by (1 - 4.4647e-10)
>> > so the adjusted clock will measure a mean solar day
>> > to last 86400 s, and the clock will stay in sync with UTC.
>>
>> That's right - the clocks made for serious measurements
>> are adjusted (calibrated) to count seconds of 1/86400
>> of a mean solar day.
>
> Quite right.
> The GPS-SV clocks are indeed made for serious measurements.
> And the designers of the GPS understood that they
> had to adjust the clocks down by ((1 - 4.4647e-10) \
> The Galileo-SV clocks are also made for serious measurements.
> And the designers of the Galileo GNSS understood that they
> had to adjust the clocks down by ((1 - 4.7218e-10) to
> make the SV-clock stay in sync with UTC and would have
> measured 86400 seconds in a mean solar day.
>
> The GLONASS-SV clocks are also made for serious measurements.
> And the designers of GLONASS understood that they
> had to adjust the clocks down by ((1 - 4.3582e-10) to
> make the SV-clock stay in sync with UTC and would have
> measured 86400 seconds in a mean solar day.
>
>
Summarizing - for serious measurement
we have to rely on the old second
instead that mad nonsense your bunch of
idiots is insisting on.
QED.
>
BTW, you really should learn some basics.
UTC, TAI, GPS time - they're similar but
slightly different (and, of course, none
of them dilates).
Why did you snipped this ? Cannot answer ?
‹ You know of course why the SV-clocks made for serious measurements
in the different GNSS systems have to be adjusted differently.
Because it's offtopic.