Re: A Sundial Glossary

1999-12-09 Thread Dave Bell

On Thu, 9 Dec 1999, John Davis wrote:

> Dear Dialling Colleagues,
> 
> The British Sundial Society (BSS) has decided that a Glossary of dialling
> terms would be a good idea.  It would have two main purposes:
> 
> I  volunteered to edit such a document, and have now produced a version
> which is ready for review.
>
> www.btinternet.com/~john.davis

Wow!  The Glossary looks great, John! You've accomplished a huge job with
the very professional result you have, so far. Thanks for making it
available to all of us!

Dave Bell


A Sundial Glossary

1999-12-09 Thread John Davis

Dear Dialling Colleagues,

The British Sundial Society (BSS) has decided that a Glossary of dialling
terms would be a good idea.  It would have two main purposes:

- to provide a refererence source for newcomers to dialling, and

- to try to set preferred definitions of the terms, symbols and descriptions
which we all tend to use rather loosely.

I  volunteered to edit such a document, and have now produced a version
which is ready for review.  Although the document is aimed mainly at BSS
members (who live world-wide, of course) and thus concentrates on British
oriented aspects, it is hoped that it will be of use wherever diallists use
the English language.  It is also expected that the Glossary will be useful
alongside the NASS FAQ project, when that is ready.

As well as a "dictionary" section, the document contains a preferred set of
mathematical symbols, some contentious sign conventions, and a brief
"chronology" of dialling.

The Glossary has been written in a form which will be printed for BSS
members.  It is also hoped that it will be put on the BSS web pages in the
future, after BSS members have debated its contents and agreed on correct
definitions.  In the meantime, it can be viewed on my rudimentary web site
at:

www.btinternet.com/~john.davis

I'd welcome any feedback, and am quite willing to be over-ruled on choices
of symbols etc, if there is a general consensus.

PS - Netscape users will see some odd formatting - blame Bill Gates, because
it was converted from Word97 and is fine in MS Explorer!

Over to you!

John

--
Dr J R Davis
Flowton, UK
52.08N, 1.043E
email: [EMAIL PROTECTED]



JPEGs - metal sundials.

1999-12-09 Thread Tony Moss

Fellow Shadow Watchers,
The delayed JPEGs were sent out just after 6pm UT 
today  at which point there was a possible  minor hitch.  My service only 
supports groups of 50 at one posting (I discover) and there are now 55 
people on the sub-list.  My email software claims to have split them up 
and sent twice (it did) but if there is anyone expecting these items who 
doesn't receive them soon please let me know.

I've split the sub-group into two separate mail lists so...

...hopefully most of these dealings can be kept off list in future.

I'm sure I heard the sound of faint cheering just then! :-)

Best Wishes

Tony Moss.



Re: Tycho Brahe

1999-12-09 Thread Gordon Uber



Author: Brahe, Tycho, 1546-1601
Title: Tycho Brahe's description of his instruments and scientific work, as 
given in Astronomiae instauratae mechanica
 (Wandesburgi 1598) Translated and edited by Hans Raeder, Elis Str"mgren 
and Bengt Str"mgren

 Published: Kobenhavn, I Kommission hos E. Munksgaard, 1946

Also see the bibliography in
Author: Thoren, Victor E
Title: The Lord of Uraniborg : a biography of Tycho Brahe / Victor E. 
Thoren ; with contributions by John R. Christianson

Published: Cambridge [England] ; New York : Cambridge University Press, 1990

Gordon


At 01:43 AM 12/07/1999 , Mainsa wrote:

Friends:

I know there is a translation into English (1946) of the book "Astronomiae 
Instaurate Mechanica" by Tycho Brahe.


Know you the complete reference of this book or other translation into 
Spanish, French, Italian or Portuguese?


Gordon Uber   [EMAIL PROTECTED]  San Diego, California  USA
Webmaster: Clocks and Time: http://www.ubr.com/clocks


Re: Horror etc. - the solution!

1999-12-09 Thread Les Cowley

>Re-posting jpegs to 'jpeg-list' addresses after 6pm this evening
>(British Telecom cheap rate!)
>
>Tony Moss

Tony,

I recently had occasion to post several megabytes of images for
an article and found that if an image (or several) is compressed in
a zip file then there can be substantial savings in size.  The amount
of (zip) compression depends on the image.   Zip compression
does not cause any image degradation.

Les Cowley



Tycho Brahe

1999-12-09 Thread Mainsa




Friends:
 
I know there is a translation into English (1946) of the book 
"Astronomiae Instaurate Mechanica" by Tycho Brahe.
 
Know you the complete reference of this book or other 
translation into Spanish, French, Italian or Portuguese?
 
Thanks you.
 
Regards
 
Mainsa



Re: Premieres horloges medievales - Early medieval clocks

1999-12-09 Thread Francis Nouaille


Jack Aubert <[EMAIL PROTECTED]> asked : "What is a foliot ?"

C'est très beau, mais qu'est-ce que c'est un foliot?



The foliot is the first oscillator used in horology.


A cette adresse, vous trouverez une explication :

http://www.cp-watchemployers.ch/presse/dossier1.htm

En voici un extrait :

"La quête de la précision s'est essentiellement concentrée sur la 
recherche d'un oscillateur dont le battement est le plus régulier et 
le plus rapide possible (plus les unités sont petites et plus 
l'exactitude de l'horloge est grande).
Les premiers oscillateurs, appelés foliot, ont été le c¦ur des 
premières horloges (XIIIème siècle). Il s'agit d'un balancier 
horizontal muni de deux petits poids pour en assurer le réglage. Ses 
allers et retours (battements) durent plusieurs secondes et ne sont 
pas très réguliers. Ces horloges devaient donc souvent être remises à 
l'heure du cadran solaire ; elles pouvaient varier d'une heure par 
jour".



Cordialement

-
Association Le Gnomon
3, rue des Martyrs de la Libération
31400 Toulouse - France

Site : http://sudmedia.com/gnomon
Mail : [EMAIL PROTECTED]

-


Re: Horror etc. - the solution!

1999-12-09 Thread Tony Moss

Fellow Shadow Watchers,
Gordon Uber reminded me that Daniel our webmaster 
set a file size limiter on the Sundial List Server.

The majordomo probably just pulled the switch and shunted my rogue 
megabyte off into an electronic black hole.  

What a relief!  O-)

Re-posting jpegs to 'jpeg-list' addresses after 6pm this evening  
(British Telecom cheap rate!)

Tony Moss