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Re: [OM] Meet real precision

Subject: Re: [OM] Meet real precision
From: Chris Trask <christrask@xxxxxxxxxxxxx>
Date: Fri, 30 Nov 2018 15:39:41 -0700 (GMT-07:00)
Cc: usher99@xxxxxxx
     I don't cycle that fast that it matters.  :{b

>
>The ClockSync and GPSTest apps on my phones give me the time down to 
>the second, and these days even that amount of accuracy is overkill.
>
>>GPS satellites have multiple atomic clocks with accuracy/precision in 
>>the 10**-12 range.   Nothing like the new ytterbium optical lattice 
>>clock but that is not required for their function.  Taking into 
>>account the relativistic effects of gravity and velocity are both 
>>essential or the location data is trash. Many seem to think 
>>relativistic effects are limited to exotic physics and don't appreciate 
>>Google maps turn by turn direction is totally impossible w/o considering 
>>them.
>


Chris

When the going gets weird, the weird turn pro 
     - Hunter S. Thompson
-- 
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