ToClaude Hartman and other people interested.
Images of the sundial of Ibn al Shatir bult in Damascus (1371-1372 - 773
H) can be found:
- in the book of R. Rohr "Sundials, history, theory and practice"
published by the Toronto Press in 1970
There are one photo (1), the reproduction
> Jim Cobb wroteThe following are the years from 1800 to 2100 in which
February has no
full moon. This is taken from Meeus's book.
180919152018
184719342037
186619612067
188519992094<
Wonderful - that sounds like a most interesting
"Mark Wrigley" <[EMAIL PROTECTED]> wrote:
> Not quite true.
> Last month Australia had a full moon at about 2am on Feb 1.
> In Europe it was still January.
Quite so. Meeus (careful calculator that he is) explicitly notes his
use of UT (and the dependence of such a calculation on the time zone).
Tex Brashear wrote:
>
> Does anyone have any experiences to share about working with a plasma
>cutter to do intricate fretwork designs on gnomons and dial plates? Any
>tips or good external references would be appreciated.
I've contracted for plasma cutting 12mm stainless steel for two large pol
Not quite true.
Last month Australia had a full moon at about 2am on Feb 1.
In Europe it was still January.
>From: Jim_Cobb <[EMAIL PROTECTED]>
>Reply-To: Jim Cobb <[EMAIL PROTECTED]>
>To: [EMAIL PROTECTED]
>CC: sundial@rrz.uni-koeln.de
>Subject: Re: A tad off topic?
>Date: Fri, 12 Mar 1999
Hello All.
Does anyone have any experiences to share about working with a plasma
cutter to do intricate fretwork designs on gnomons and dial plates? Any
tips or good external references would be appreciated.
Tex Brashear
> > Will two full moons always occur in a March that follows a Febuary with
> > no full moon?
> I think it pretty well follows.
...
> I:31/01 23:50
> plus 29 12:00
> 60/01 35:50
> corr 61/01 11:50
> corr -31 (leap year)
> 30/02 11:50 30/02 11:5
> Hello all:
>
> Will two full moons always occur in a March that follows a Febuary with no
> full moon?
>
> John Carmichael
> Tucson
The second March full moon this year occurs at 22:49 UT. Therefore,
if one moves east from London by a couple of time zones March has but
a single full moon th
This reasoning relies on the mean length of a lunation. But the
actual case is more complicated. See my reply to John on this same
subject.
Jim
--- --
| Jim Cobb | 540 Arapeen Dr. #100 | [EMAIL PROTECTED] |
| Parametric
The following are the years from 1800 to 2100 in which February has no
full moon. This is taken from Meeus's book.
180919152018
184719342037
186619612067
188519992094
Jim
--- --
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