Re: Garden sundial mottoes

1998-07-14 Thread Andrew Pettit
Off topic to Robert Shapiro's question - but I came across the following in "Verse and Worse" TWO INSCRIPTIONS FROM OLD SUNDIALS Life's but a shade: man is but dust; The dyall sayes that dyall we must. Time wastes our bodies and our wits; But we waste Time, so we are quits. -

Re: Precession

1998-07-14 Thread Arthur Carlson
"Sonderegger" <[EMAIL PROTECTED]> writes: > I think in the northern hemisphere summer is always in July, because the > beginning of spring is here always when then sun crosses declination of 0 > degree from south to north (= crossing the ecliptic). The places of the > stars on then sky will chang

[Fwd: Change of EoT]

1998-07-14 Thread fer j. de vries
--- Begin Message --- Message-ID: <[EMAIL PROTECTED]> Date: Tue, 14 Jul 1998 15:52:22 +0200 From: "fer j. de vries" <[EMAIL PROTECTED]> X-Mailer: Mozilla 3.01 (Win95; I) MIME-Version: 1.0 To: Arthur Carlson <[EMAIL PROTECTED]> Subject: Change of EoT References: <[EMAIL PROTECTED]> <[EMAIL PROTECTED

Re: query

1998-07-14 Thread fer j. de vries
[EMAIL PROTECTED] wrote: > > To anyone who might know: > > Living in Tucson, Arizona, which has more minutes of sunshine > annually than any other spot in America, I became an amateur diallist a > few years ago. I > thought I'd put a question to you for your expert consideration. > Fo

Re: Precession

1998-07-14 Thread Luke Coletti
Helmut, Regarding the occurrence of The Seasons, I think I was mentioning a position variation relative to a fixed frame defined in a given epoch and due to Precession e.g., with the Equinoxes shifting West and the Longitude of Perihelion shifting East the Summer Solstice and Perihelion w

Re: Precession / EoT

1998-07-14 Thread Luke Coletti
Arthur, You are right regarding the relative small changes in the values of Obliquity and Eccentricity over the period of a precession cycle. However, it is the phase relationship of the two effects and not their values that play the dominant role in the variation of the Equation of Time

Re: query

1998-07-14 Thread Mark Gingrich
Tex Brashear wrote: > ... What if, at the junction of the noon line and six-o-clock lines, > we make a small hole...and then drive a tiny rod into that hole so that > the dial plate pivots around that point on a base to which is attached? > The point itself however, remains in the same position

RE: Garden sundial mottoes

1998-07-14 Thread Powers Patrick
Out of 3477 dials on the BSS register there are 586 recorded as having a motto. 211 of these have no recorded date but if the distribution between dates on non-dated dials is the same as that on dated dials (that may not be right...) the results would be: Dials with mottos in the various centuri

query

1998-07-14 Thread TexBrashear
To anyone who might know: Living in Tucson, Arizona, which has more minutes of sunshine annually than any other spot in America, I became an amateur diallist a few years ago. I thought I'd put a question to you for your expert consideration. For some time I've wanted to build a horizon

Re: Precession

1998-07-14 Thread Wolfgang Abratis
Arthur Carlson wrote: > The precession is a physical process, which > does not depend on our calendars. What it does is change the > constellations that are visible at night in July. Since we don't use > the stars for sundials, it won't make any difference. Arthur, I beg to differ. For those