Determining how much time error, at a certain time, a given
azimuth-alignment-error will cause, or what azimuth-alignment error would
cause a certain time error at a certain time--That isn't an unusual kind of
problem.
But, if you want to use clock-time to set a sundial, then just rotate the
dial
André,
Maybe one of these?
New Method Of Setting Sundials – An Improvement / Rolf Wieland / The
Compendium 21(1), March 2014, pp.12-14
Introduction: In The Compendium 20(4) from December 2013 we could read
on page 4 the following intriguing method of setting a sundial described
in the
Dear André,
Could it have been:" Error In A Misplaced Sundial - Fred Sawyer "?
Compendium (1/4 1994). Let me know if it is and I can forward the pdf.
best wishes,
Peter
On 9/08/2020 2:29:04, André Reekmqns wrote:
Looking for the 3 pages article published in BSS or NASS 10 years?
about
Looking for the 3 pages article published in BSS or NASS 10 years? about
rectifying a misaligned pole-style horizontal or vertical sundial.
André Reekmans
Sundial Society of Flanders, Belgium.
---
Dear Fellow Dialists,
Ellaine Rose of Marblehead, Massachusetts would like to have a vertical sundial
made for her home. It would be placed on a southwesterly wall facing the
harbor, where it could be seen from boats. She envisions a motto, "Time and
Tide Wait for No One." She needs help
Dear sundialists!
If not done yet, please update your e-mail address book entry for the
sundial mailing list address:
Replace sund...@rrz.uni-koeln.de by just sundial@uni-koeln.de
Thank you!
The old address might not work anymore at some point in future.
Best regards and thank you all for
steve.lelievre.can...@gmail.com
To: sundial@uni-koeln.de sundial@uni-koeln.de
Sent: Sunday, 1 June 2014, 23:13
Subject: Request for information about a type of altitude dial
Hi folks,
http://www.pinterest.com/pin/301178293801331061/
What type of dial is this; I realize it's a form of altitude
There has been some confusion in the discussion so far. Here is my take:
The sundial pictured is called a “vertical disk dial.” It is an altitude
sundial.
The example pictured is similar to one at CHSI (inv. 7270) signed “I W” with a
punch mark of a crown and date 1672. It is for latitude
Hi folks,
http://www.pinterest.com/pin/301178293801331061/
What type of dial is this; I realize it's a form of altitude dial, but
is there a specific name for it?
The accompanying note states that the dial can be adjusted for latitude
by moving the attachment point. I don't understand which
I don't know the name, but I believe the moveable attachment point is where
the hanging loop clamps to the dial plate. Moving that will rotate the dial and
altitude scale relative to vertical.
Dave
Sent from my iPhone
On Jun 1, 2014, at 3:13 PM, Steve Lelievre
Dave,
That's the point I'm struggling to understand. I'm assuming a chain is
used to suspend the dial in use, but wouldn't it adjust itself to bring
the centre of gravity back under the point of suspension - effectively
making it impossible to rotate the dial face?
Steve
On 01/06/2014
, June 1, 2014 3:35 PM
Subject: Re: Request for information about a type of altitude dial
Neat dial. I don't know what it is called, but I like it and it's clever
pinhole date aperture. I suspect the note about attachment point and latitude
is incorrect. I am not aware of any altitude dial
www.illustratingshadows.com
Phoenix, Arizona, W112.1 N33.5
From: Steve Lelievre steve.lelievre.can...@gmail.com
To: David Bell db...@thebells.net
Cc: sundial@uni-koeln.de sundial@uni-koeln.de
Sent: Sunday, June 1, 2014 3:46 PM
Subject: Re: Request for information about a type
Hi Peter,
Thanks.
Yes, I'd seen that article but I'm not convinced by the its thesis -
that the object's main purpose is for finding latitude. They're saying
that the much-discussed curved line can trace a nodus' shadow by use of
a secondary gnomon placed off-centre. For me this does not
Hi folks,
I want to locate two pieces of information that I have seen mentioned in
the past but for which I neglected to keep citations. It's a long shot
to ask, but any assistance in identifying / confirming these sources
will be much appreciated.
Both were mentioned as circumstantial /
Hi Steve,
I can't help with either of your queries. But: did you see this
article which appeared earlier this year in the _Proceedings of the
Royal Society_? In essence, on the basis of their analysis using
classical sundialing techniques, they argue that the instrument is a
specialised
RV: Request for information concerning an old sundialThe five is not inverted,
it is only written with old gliph. Also in Italy the number five was in olden
times written in this way. The sign is similar to 4 with rounded zigzag line
similar to a G. and it was tipical of the 14th up to the 16th
Dear Robert, Mark and Rafael
The inverted five is a common feature in Spanish eighteen century sundials.
The sundial itself seems to be oriented closer to north than east (an
inverted calculation will find the exact declination).
The fresco paint, finely executed and apparently well preserved,
Hello Friends,
Sincere thanks to all of you who responded to my request for advice
on how to blacken stainless steel. The dial under construction, which
is a gift to the Town of Brattleboro, has a group of people involved.
That was my choice and now I feel bound to consider the opinions
regards,
Ricardo Cernic
São Paulo - Brazil
-- Início da mensagem original ---
De: [EMAIL PROTECTED]
Para: Sundial Mailing List sundial@uni-koeln.de
Cc:
Data: Wed, 23 Apr 2008 20:59:16 -0400
Assunto: Request for suggestions
Hello friends,
Does anyone know
: Re: Request for suggestions
Hi All,
Some would vote for slate, but for my money anodised aluminium is just about
the best material for a dial. It shows shadows brilliantly, can be coloured
brightly and with very fine detail by a photoresist process as John Davis
has shown. Its surface is very
:Request for suggestions
Hello friends,
Does anyone know a simple, safe, and inexpensive method to
permanently darken stainless steel?
I'm involved in a project to create a vertical decliner (48 inches
wide by 30 inches high by 1 inch thick cast concrete) sundial for our
town's
Hello friends,
Does anyone know a simple, safe, and inexpensive method to
permanently darken stainless steel?
I'm involved in a project to create a vertical decliner (48 inches
wide by 30 inches high by 1 inch thick cast concrete) sundial for our
town's Municipal Center showing hours until
: [EMAIL PROTECTED] on behalf of Mac Oglesby
Sent: Wed 4/23/2008 8:59 PM
To: Sundial Mailing List
Subject: Request for suggestions
Hello friends,
Does anyone know a simple, safe, and inexpensive method to
permanently darken stainless steel?
I'm involved in a project to create a vertical
Sunny Day Mac!
Please check out the following web site for a product that can be used to
blacken stainless steel at room temperature. I have no idea how good it is
or how much is required. You can contact the company for further info.
http://www.caswellplating.com/kits/black.htm
Scroll to the
Mac,
You can do black oxide coatings on stainless steel.You can also use
a PVD (Plasma Vapor Deposition) coating of AlTiN (Aluminum Titanium
Nitride - also called TiAlN) - which makes a very nice black shade on
steel/stainless steel with fine detail - added benefit is really good
abrasion
I recently received the not below. Perhaps someone can assist Mr.Whatley.
---
Mr. Terwilliger,
Good evening. My name is John Whatley and I am contacting to see if you
might be able to provide and help in locating a sundial maker that can help
to replace a dial for
://www.sundials.org/publications/dcomp/dcomp.htm
Have fun,
Roderick Wall.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Carlos
Mallamaci
Sent: Thursday, 8 March 2007 11:46 AM
To: Sundial Mail List
Subject: Request about sundial
Hi all!
I'm looking for some free software to build sundials, and I would be
very gratefull for any help about it.
Thanks a lot for your advice. Carlos.
---
https://lists.uni-koeln.de/mailman/listinfo/sundial
Carlos ~ there is a lot of software out there.
Some is pictorial such as SHADOWS.
Some is pictorial, using DeltaCAD.
Some produces tabular data.
My own web site has spreadsheets with pictorial
displays, DeltaCAD macros, and programs producing
tabular output written in conversational (as
://www.sundials.org/publications/dcomp/dcomp.htm
Have fun,
Roderick Wall.
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Carlos Mallamaci
Sent: Thursday, 8 March 2007 11:46 AM
To: Sundial Mail List
Subject: Request about sundial software
Hi all
Fellow Shadow Watchers,
Does anyone have a jpeg of the small stainless steel
polar dial seen at Royal Holloway College during the BSS Conference? It had
45° 'wings' to catch the early and late shadows and a solid black 'slate'
gnomon.
On both occasions we passed it I
of a good reverse look-up website to obtain the address. If not available, perhaps a London telephone info. request number that I can call.
It is for a Graham Barber 44-703-194-4036
Any help you can provide is greatly appreciated. Thank you.
Sincerely,
Thad Weakley
41.2N 83.8W Ann Arbor, Michigan
to search for this.
I've had trouble with the connection and would like to know of a good reverse
look-up website to obtain the address. If not available, perhaps a London
telephone info. request number that I can call.
It is for a Graham Barber 44-703-194-4036
Any help you can provide
Thad asked:
Does anyone have simple, clear drawings of horizontal and armillary dials
that show a drawing of the sun casting a shadow that would be good to put
with a short explanation of dial? The explanation is going to be geared
to the general public. An example of the type of drawing I
, July 18, 2005 1:38 AM
Subject: Sundial drawing request
Sundial Enthuiasts,
Does anyone have simple, clear drawings of horizontal and armillary dials
that show a drawing of the sun casting a shadow that would be good to put with
a short explanation of dial? The explanation
Does anyone have simple, clear drawings of horizontal and armillary dials that show a drawing of the sun casting a shadow that would be good to put with a short explanation of dial? The explanation is going to be geared to the general public. An example of the type of drawingI am looking for
Dear Friends,
For general informations and on how to obtain the new CD-R about Gree-Roman
sundials of Nicola Severino, please contact the author only at
[EMAIL PROTECTED]
Thanks
Forgot to say that there is this site... but I think a real person is
better!!
http://www.tritrans.net/index.html
-
Fellow Shadow Watchers,
Does anyone have one or more clear colour images
of a Sol Horometer they would be willing to share off list please?
Tony Moss
Tony,
Check out the e-bay auction that was recently mentioned:
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItemitem=1498358081ed=1009682020
Regards,
Luke Coletti
Tony Moss wrote:
Fellow Shadow Watchers,
Does anyone have one or more clear colour images
Luke Coletti responded:
Check out the e-bay auction that was recently mentioned:
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItemitem=1498358081ed=10096
82020
Regards,
Luke Coletti
Many Thanks for the response Luke. When I checked this out earlier today
it seems the pics in
On Thu 16 Aug 2001 (00:13:46 +0200), [EMAIL PROTECTED] wrote:
See belw this quote for a posting dating back some five years. I don't
know whether the organisation is still in business and it's certainly
some way from Philadelphia. However, I'm sure that the instructions
would travelLLL
Hi,
]
Sent: Thursday, August 16, 2001 6:41 AM
To: sundial@rrz.uni-koeln.de
Subject:Re: Request for help - analemmatic dial
On Thu 16 Aug 2001 (00:13:46 +0200), [EMAIL PROTECTED] wrote:
See belw this quote for a posting dating back some five years. I
don't
See belw this quote for a posting dating back some five years. I don't know
whether the organisation is still in business and it's certainly some way
from Philadelphia. However, I'm sure that the instructions would travelLLL
At 20:46 13/8/01 -0400, Robert Terwilliger wrote:
Hi Dialists,
Can
A specialist in analemmatic sundials is Frans Maes.
You can find his 'analemmatic extra info' on
http://www.biol.rug.nl/maes/zonnewijzers/welcome-e.htm
Willy Leenders
Robert Terwilliger wrote:
Hi Dialists,
Can anybody in the Philadelphia area help this lady?
Hi Bob -
I work for the
Hi Dialists,
Can anybody in the Philadelphia area help this lady?
Hi Bob -
I work for the Pennsylvania Horticultural Society and we have a
community project where we are hoping to create an analemmatic dial. We
would like the child's shadow to show the time. Could you be of any
assistance in
Fellow Shadow Watchers,
As ever List members produced numerous responses
with regard to the nature of 'platinic chloride'.
My grateful thanks to all those who responded.
We're currently beginning design proposals for a VERY large bronze
vertical declining dial some 2
This is all definitely off topic. But with apologies here goes.
So how many times have we 're-cycled?' the drinking water
Wasn't there once a Scotsman who poured a bottle of Scotch over his friends
grave every year on the anniversary of his death? He just filtered it
through his kidneys first
Pace [EMAIL PROTECTED]
To: SUNDIAL@rrz.uni-koeln.de
Sent: Monday, November 29, 1999 5:06 PM
Subject: Request for important information
Dear sundial enthusiasts
Today I wish to ask something non-sundial-related...
I saw the very interesting website http://www.indo.com/cgi-bin/dist which
calculates
However
If there is a analemmatic sundial with EOT correction build in.
The location is: Logwood gardens, Kennett Square, Pennsylvania and has the
dimensions of 11.35m x 7.28m and is designed by P.Kenneth Seidelmann.
He made actually two halve dials, one for AM and one for PM. He used the
So how many times have we 're-cycled?' the drinking water
Wasn't there once a Scotsman who poured a bottle of Scotch over his friends
grave every year on the anniversary of his death? He just filtered it
through his kidneys first to avoid the waste.
Mike
[EMAIL PROTECTED]
53.37N 3.02W
I would like to know whether the equation of time is used when an
analemmatic dial is read. I have pictures of human analemmatic dials where
the position of the gnomon is indicated by an analemma, and some where the
position of the gnomon is indicated by dates on a central straight line.
Alexei Pace terminated his recent posting with:
Behind every man alive stand thirty ghosts, for that is the ratio by
which the dead outnumber the living. Since the dawn of time, a hundred
billion human beings have walked the planet Earth. -- arthur c. clarke
So how many times have we
Dear Friends,
My thanks to everyone who responded to my request for the QuickBASIC
installation disks. I still had the essential files, but there are some
libraries and other incidentals that were missing. What I still need are
the actual installation disks. (Qbasic and QuickBASIC are different
Fellow shadow watchers
I recently put an IBM/MS DOS formatted Zip Disc into my Apple Zip Drive
(9600/350 with built-in drive) by mistake and was surprised to find that
it worked perfectly without any re-formatting. As I can bulk-buy these
discs for half the price of the Mac formatted item:-
For the benefit of Tony Moss, a search on
http://bible.gospelcom.net/cgi-bin/bible in KJV for every thing
beautiful yielded:
He hath made every thing beautiful in his time: also he hath set the world
in their heart, so that no man can find out the work that God maketh from
the beginning to the
http://bible.gospelcom.net/cgi-bin/bible?language=Englishversion=KJVpassage=Ecclesiastes+3:11matchno=7
Ecclesiastes 3:11 (English-KJV)
He hath made every thing beautiful in his time: also he hath set the
world in their heart, so that no
man can find out the work that God
ECCLESIASTES 3:11.
John
On Mon, 17 May 1999, Tony Moss wrote:
Fellow Shadow Watchers,
This is 100% on topic and somewhat urgent for me.
The large bronze dial plate which I am about to engrave must bear the
biblical inscription
He hath made
Ecclesiastes. Chapter 3. Verse 11. The online versions I checked did not
capilalise his.
On Mon, 17 May 1999, Tony Moss wrote:
Fellow Shadow Watchers,
This is 100% on topic and somewhat urgent for me.
The large bronze dial plate which I am about to engrave must bear
Tony Moss asked
(Snip)
He hath made every thing beautiful in his time
Can anyone give me 'chapter verse' for this please as I
must be certain
(Snip)
King James version of
Ecclesiastes Chapter 3 Verse 11
He hath made every thing beautiful in his time: also he
hath set the world in their
Fellow Shadow Watchers,
This is 100% on topic and somewhat urgent for me.
The large bronze dial plate which I am about to engrave must bear the
biblical inscription
He hath made every thing beautiful in his time
Can anyone give me 'chapter verse' for this
Hello,
I am looking for the postal address of the US Naval Observatory at Washington DC
Could someone help ?
Thank you very much for you answer.
Henri GOAS.
From the USNO Web page: http://www.usno.navy.mil/
Superintendent
U.S. Naval Observatory
3450 Massachusetts Avenue, NW
Washington, DC 20392-5420
USA
(202) 762-1437
[EMAIL PROTECTED] wrote:
Hello,
I am looking for the postal address of the US Naval
-Messaggio originale-
Da: Mario Arnaldi [EMAIL PROTECTED]
A: sundial list sundial@rrz.uni-koeln.de
Data: sabato 29 agosto 1998 16.48
Oggetto: Help request on medieval sundials
Dear all,
I need your help to find a French expert, or one that knows the subject
enough to help me. I'm
I would like to contact these three persons by e-mail.
You can send the command
who sundial
in a single line in the body of an e-mail to [EMAIL PROTECTED]
to get the answer.
- Daniel Roth, sundial mailing list
Hello,
I would like to contact these three persons by e-mail.
Could someone communicate me their e-mail address ?
- F. BLATEYRON ( France )
- Gianni FERRARI ( Italy )
- F.J. de VRIES ( The Netherlands )
Thank you for your answer.
Henri GOAS .
In the most recent printing of Amateur Telescope Making by Albert
Ingalls, Willmann-Bell 1996, the Brashear's Process is now found in vol. 3
(3-262). ATM appears to have originally been published in 1937. The
illustrations in ATM, by the way, were masterfully done by Russell W. Porter
who
Subject: Subject: Silvering Mirrors - a non-sundial request
Date: Sunday, April 19, 1998 6:57 PM
Fellow Shadow Watchers,
A slightly off-topic request but I know there are many list members with
an astronomical interest.
Many years ago I silvered my home made telescope mirror using
of Brashear's, which uses sugar as a reducing agent) as
being slower and better for making half-silvered mirrors.
It describes how to make half-silvered mirrors using it.
Gordon T. Uber, 3790 El Camino Real, Suite 142
Many thanks for the pointers which I will request through my
At 1:57 AM + 4/20/98, Tony Moss wrote:
Fellow Shadow Watchers,
A slightly off-topic request but I know there are many list members with
an astronomical interest.
Many years ago I silvered my home made telescope mirror using a recipe
containing silver nitrate and sugar I seem to remember
Tony,
ATM - Book One, (Amateur Telescope Making), A G. Ingalls, Ed.,
Scientific American Press, may be the book you remember using.
You can also find instructions in older editions (into the 1950s,)
of the Handbook of Chemistry and Physics, Chemical Rubber
Publishing Co..
Good Luck with
Hi Mac,
Fer's use of the equations I listed works fine. Obviously I had misread
your rotation axis - but the formulas continue to be applicable.
Regardless of whether you use a perpendicular stile or a celestial axis
stile as your gnomon, construction of a dial will still he aided by
I have developed and patented a sundial that will be produced and sold by
my company, Celestial Products, Inc. Celestial Products markets a variety
of astronomical publications to the science and nature store market through
its wholesale division as well as through its retail direct mail order
I will soon visit Germany and would be grateful for directions to sundials
on display in Frankfurt am Main, Marburg, and Halberstadt. Thank you.
Please reply to George McDowell, [EMAIL PROTECTED]
Ich werde bald Deutschland besuchen. Ich moechte die Sonnenuhren des
Frankfurt am Main, Marburg, und
At 09:55 12-11-96 +0100, you wrote:
I think there is a large horizontal dial with curves for the equation of
time
at a financial bank in Munich, Germany.
The point where two walls of the building meets is used as the shadow casting
device.
I have no idea how high this point is, nor do I
I think there is a large horizontal dial with curves for the equation of time
at a financial bank in Munich, Germany.
The point where two walls of the building meets is used as the shadow casting
device.
I have no idea how high this point is, nor do I know how large the dials
plane is.
Ross McCluney wrote:
...
The dial is on the University of Texas Pan American campus in Edinburg. It is
a combined solar time and standard time dial, so I thought of calling it the
world's largest standard time dial. Do any of you know of any standard
time dials that are larger, and can
hours, and between them are analemma-shaped hour
lines for the standard time hours.
In return for your help, please give me your mailing address and I'll send you
a copy of a draft article I prepared at the architect's request about the
sundial for use by a newspaper in Texas.
My e-mail
Jeb Riordan wrote:
Can anybody please supply me with a table showing the angles between the
hour lines for a horizontal sundial situated at Lat 21deg 20 min N, Long
71deg 20 minW
(Caribbean 575 miles East South East of Florida USA).
Please also confirm that the angle of the gnomom should
All I know is that the Bible refers to such sundials in the Book of the Kings
Reto Ambrosini
From: [EMAIL PROTECTED]
To: sundial@rrz.uni-koeln.de
Subject: Shadow Clock/Sundial Request
I'm looking for information for my father on building a shadow clock for a
re-creation of a biblical marketplace at his church. The research I'm seeing
so far indicates that shadow clocks were
From: [EMAIL PROTECTED]
To: sundial@rrz.uni-koeln.de
Subject: Shadow Clock/Sundial Request
I'm looking for information for my father on building a shadow clock for a
re-creation of a biblical marketplace at his church. The research I'm seeing
so far indicates that shadow clocks were
The distance from D to the zodiacal circle is arbitrary, because all
you really are doing is fixing the angles of the line segments radiating
out from D. You want the outer lines to be +/-23.5 degrees from the
horizontal from D. The interior lines have angles derived for
each zodiacal sign by
i'm working through Drinkwater's _Art of Sundial
Construction_
I'm interested in this book. Can you give me the publisher (and ISBN)?
Thank you.
- Daniel
Greetings All,
i'm working through Drinkwater's _Art of Sundial
Construction_ (which i very much like) but have encountered
a problem that perhaps someone can help me with. i have
two problems in his section on marking the Parallels of
Solar Declination (pp. 44-46).
First, on p.45 he says
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