[time-nuts] Cesium DOES Drift, not
brooke at pacific.net
Wed Apr 20 12:55:21 EDT 2005
The first derivative should be:
Offset = -3E-14 * X + 2.8E-12
so the offset for today 20 April (day # 110) is:
Offset = -3E-14* 110 + 2.8E-12 = -5E-13.
Brooke Clarke wrote:
> Hi Rick:
> I agree.
> It's just that my FTS4060 IS drifting.
> The Excel equation and fit for a month of data as of this morning are:
> y = -1.2954x2 + 243.1x - 10631
> R2 = 0.9607
> Where y is in ns, x is the Day of Year and R2 is the quality of the
> fit (very good).
> The first derivative (after dividing by 86400) gives:
> Offset = -3E-14 * X + 243
> i.e. minus 3E-14 per day.
> I'll keep watching and post from time to time, maybe this will
> Have Fun,
> Brooke Clarke, N6GCE
w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml
More information about the time-nuts