Re: GPS calculations
From: Henri Wilson (H_at_..(Henri)
Date: 09/29/04
- Next message: Bill Hobba: "Re: SR and GR without math"
- Previous message: Henri Wilson: "Re: The GPS GR Correction, put to Rest."
- In reply to: Paul B. Andersen: "Re: GPS calculations"
- Next in thread: xxein: "Re: GPS calculations"
- Messages sorted by: [ date ] [ thread ]
Date: Wed, 29 Sep 2004 22:42:10 GMT
On Wed, 29 Sep 2004 22:55:55 +0200, "Paul B. Andersen" <paul.b.andersen@hia.no>
wrote:
>
>"Henri Wilson" <H@..> skrev i melding news:ktail0p4i6elg54i9qhsrcbhd1markbcs4@4ax.com...
>> Let's explain in really simple language.
>>
>> If an observer in an orbiting space capsule wants to synch the rate of his
>> clock with that of a ground clock, he can do so by setting the number of
>> 'ticks' it makes per ONE COMPLETE ORBIT to the number recorded by the ground
>> clock per ONE COMPLETE ORBIT.
>>
>> You see, the two observers have a common clock. They can both agree beforehand
>> to adjust their own local clocks to tick at a rate, say, of 10^10 per orbit.
>
>Exactly right.
>But since GR is capable of predicting how to adjust the rate of the clock
>before it is launched, we do not have to adjust the clock in orbit.
>And - as we know - GR got it exactly right for the GPS satellite clocks.
>All clocks in the GPS - ground clocks as well as satellite clocks -
>do indeed tick an equal number of seconds per orbit.
GR got it wrong by at least 20% at that was only through pure coincidence.
In fact the 'free fall' error has never been properly measured because nobody
except and SRian actually cares much what it is.
>
>Paul
>
HW.
www.users.bigpond.com/hewn/index.htm
- Next message: Bill Hobba: "Re: SR and GR without math"
- Previous message: Henri Wilson: "Re: The GPS GR Correction, put to Rest."
- In reply to: Paul B. Andersen: "Re: GPS calculations"
- Next in thread: xxein: "Re: GPS calculations"
- Messages sorted by: [ date ] [ thread ]
Relevant Pages
|
