[time-nuts] UTC and the speed of light?

[Rob Kimberley]

The original question asked whether the speed of light was taken into
account in the definition of UTC. From where I'm standing (and please excuse
the pun), it isn't.

Rob Kimberley

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of mike cook
Sent: 30 August 2011 9:52 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] UTC and the speed of light?

Le 30/08/2011 10:36, Rob Kimberley a écrit :
> AFIK it isn't.
>
> Rob K
>
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] 
> On Behalf Of Chris Albertson
> Sent: 30 August 2011 8:40 AM
> To: Discussion of precise time and frequency measurement
> Subject: [time-nuts] UTC and the speed of light?
>
> How is the speed of light accounted for in the definition of UTC?
>
> In other words, how did they solve the conflict where on one hand we'd 
> all expect two "perfect" clocks to "tick" at the same time but wether 
> they do depends on the location of the observer?
No, but the position of the clocks used to measure TAI on which UTC is based
is taken  into account with the definition of TAI.

"TAI is a coordinate time scale defined in a geocentric reference frame with
the SI second as realized on the rotating geoid as the scale unit"




_______________________________________________
time-nuts mailing list -- time-nuts at febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.