Am I correct in thinking that:
OSX the 'Grid East Value' and
OSY the 'Grid North Value? in this context? O-)
Yes - if you look on the OSGB map included in the BSS glassary
http://www.sundialsoc.org.uk/glossary/ap11/ap11.htm
the 0-700km eastings and 0-1300km northings are noted up the
Dear Anselmo and all,
With respect to the bifilar polar dial in Appingedam (NL), my site does
not specify the shape of the curved gnomon. It is certainly no ellipse, nor
a hyperbola. Do you like some math? Have a look at the article by Fer de
Vries in the NASS Compendium 8 (4), in particular
I think the result is x^2 = (1 - 2z + 2z^3 - z^4) / z^2.
Kind regards,
- Original Message -
From: Frans W. Maes [EMAIL PROTECTED]
To: sundial@rrz.uni-koeln.de
Sent: Tuesday, September 10, 2002 9:13 AM
Subject: Re: On bifilar polar sundial
Dear Anselmo and all,
The use of grid squares for the U.K. National Grid was introduced to reduce
the number of digits required to give a reference. E.g., for a place with full
National Grid coordinates 538857.2345 metres easting, and 177345.3456
metres northing (a position given to the nearest 0.1 millimetres --
You are right, Jose. Thanks for checking!
Frans
- Original Message -
From: Jose Luis Diaz [EMAIL PROTECTED]
To: sundial@rrz.uni-koeln.de
Sent: Tuesday, September 10, 2002 2:10 PM
Subject: RE: On bifilar polar sundial
I think the result is x^2 = (1 - 2z + 2z^3 - z^4) / z^2.
I don't know where you live, but there is one reason it won't work:
overcast sky! It usually happens when you wish it wouldn't, isn't it?
So, a nice (if dull) all-weather solution is to buy your wife a
simple...
compass! (It's funny that nobody came with this simple and effective
solution?).
There exists a program for the Palm Pilot which does exactly what you
want. It is called Sol II. It is shareware and can be found, I
believe,
on the download.com or palm.com websites. If you cannot find it I can
try to help you further.
Good luck,
Steve Madden
Steve Turley wrote:
Esteemed
I believe there is a brass/metal polish called, of all things, Brasso.
I found mine in a hardware store.
Good luck,
Steve Madden
[EMAIL PROTECTED] wrote:
Hi all.
I need to brighten the dark patina on my large bronze focusing dial for a
photoshoot.I do not want to use anything
