[Phys-L] Re: solar cycle

[Brian Whatcott <betwys1@SBCGLOBAL.NET>]

At 08:47 AM 2/16/2005, Anthony L., you wrote:
> I got my info from various sources - a video ("Planet Earth") from the
> late 1980's, and several current astronomy textbooks. The video discussed
> tree rings and other sedimentary deposits on the Earth and how well they
> correlated with the solar cycle. That's my "data."


I searched on "solar periodicity" and found studies
proposing periods of:

1.1 billion years
40,036 years
1450 years
317 years
178.7 years
177.9 years
111 years
45 years
19.9 years

Without undue violence, I expect you could find
harmonic relationships between these numbers.


Brian Whatcott    Altus OK    Eureka!