Michael Coslo wrote:
Jim Kelley wrote:



Cecil Moore wrote:

Actually, there is an unexplained time drift between atomic
decay and Bristle Cone Pine rings that can be explained if
seconds are getting shorter.


Assuming the time it takes for the Earth to orbit around the Sun is an
absolute, of course. ;-)



Which of course, it isn't.

- 73 de Mike KB3EIA -

Right. Seemed logical to me to deduce that the number of seconds in a
year might have changed, but to infer from that that the length of the
second has changed seems like quite a leap to me. Given the number of
perturbations in the system, it's more likely the length of our path
around the Sun has changed slightly over time. But hey, I'm no biologist.

jk