Dear Frans,
You are right! Absolutely right!
> > The expression now turns into a function of time:
> >
> > a . (coslat/cos(dec(t)) . sqrt(coslat^2 - sin(dec(t))^2)
> >
> > THIS is the expression to integrate over a whole year and
> > whose average should be found. THAT result is where the
> >
Dear Frank &all,
Frank King wrote:
> The expression now turns into a function of time:
>
> a . (coslat/cos(dec(t)) . sqrt(coslat^2 - sin(dec(t))^2)
>
> THIS is the expression to integrate over a whole year and
> whose average should be found. THAT result is where the
> markers should be plac
Dear Roger,
No one seems to have responded to your interesting letter to
the Editor of the BSS Bulletin.
May I join in?
SEASONAL MARKERS
You write about Seasonal Markers on analemmatic sundials.
Seasonal Markers are two special points on the major axis
of the ellipse (of hour marks). If you s
at your readers have a look at the original
article. "Seasonal Markers for Analemmatic Sundials" was published in the
NASS Compendium, in Sept 2003 and in the NASS "Sourcebook for Analemmatic
Sundials" " Anyone is free to download the article at my personal website
www.wa
