Hi Jackie,
The biggest problem that I have found is that most sundials are designed for
the Northern Hemisphere. With global trading sundials are made for the Northern
Hemisphere and then imported into Southern Hemisphere countries like Australia
and don’t work. You wouldn’t have this problem
Of course I meant the Latitude circle around the Equator, not the
longitude circle in:
And at the Equator, would the Longitude circle be the biggest circle of
them
all,
Roderick.
-Original Message-
From: R Wall ml
Sent: Thursday, April 11, 2013 1:23 PM
To: David Patte ₯ ; sundial
And at the Equator, would the Longitude circle be the biggest circle of them
all, because there is a bulge at the Equator. A bulge because the mass is
forced out due the the Earth spinning? Anyone know the answer, I don't?
I believe the moon also warps the Longitude circles because that is why
Hi all,
I have one of the Fossil wrist sundials. I paid AU$10.00 in 1995 in an
Australian store. It is designed for the Northern hemisphere so it is no good
for Australia. It came in a funny size box with a sloping top. It came with a
compass on the strap and a Warranty card with one year
Hi Reinhold,
They look great, but would be better if they were also in English.
Roderick.
From: Reinhold Kriegler
Sent: Thursday, March 07, 2013 7:01 AM
To: 'David Bell' ; sundial@uni-koeln.de
Subject: AW: Cut out dials
Dear friends!
Don’t forget the wonderful works of Dierk-Ekkehard
Hi Frans,
That's a nice sundial. It looks like there are a few dials of this type if
the NASS registry list 12 sundials of this type.
Thanks for the link,
Roderick.
-Original Message-
From: Frans W. Maes
Sent: Saturday, January 26, 2013 10:00 PM
To: R Wall ml
Cc: sundial@uni
and
interesting answer:
the clocks are clockwise like writing, from left to right, the Jewish clocks
are counterclockwise because they write from right to left.
ciao Fabio
Fabio Savian
fabio.sav...@nonvedolora.it
Paderno Dugnano, Milano, Italy
45° 34' 10'' N, 9° 10' 9'' E, GMT+1 (DST +2)
From: R
Hi Donald,
In Melbourne Australia we also drive on the left. But the sun still/always
comes up in the East and sets in the West. The top edge of the style is still
parallel with the axis of Earth. But as your animations show, the shadow in the
Southern Hemisphere moves in a anticlockwise
And in Australia we can’t even purchase fire works that go off with a bang. And
blow the letter box metal lid onto the roof. And who didn’t make a fire cracker
gun out of a metal bicycle pump and marbles. But it was hard to get the wick to
come out of the hole in the end of the pump.
Regards,
Hi Ian,
You may find something at this website:
http://www.transitofvenus.com.au
Someone there maybe able to help you.
Roderick Wall.
From: Ian Maddocks
Sent: Sunday, May 27, 2012 1:18 AM
To: sund...@rrz.uni-koeln.de
Subject: Australia Meridian/Noon Mark Transit of Venus
hi
I will be on
Hi Ruden and Tom,
The pinhole photography effect is interesting and would be fascinating to
watch.
Thanks for your help,
Roderick Wall.
-Original Message-
From: ruben nohuitol
Sent: Friday, February 17, 2012 10:28 AM
To: sundial@uni-koeln.de
Subject: about the pinhole diameter
If
and thanks,
Roderick Wall.
From: Tom Egan
Sent: Thursday, February 16, 2012 5:02 PM
To: R Wall ML emails ; sundial mailing list
Subject: Re: A compact indoor sundial using a convex mirror on the north sideof
the roof
Good question. I found that a hemispherical (I put it in quotes because
Hi all,
Does anyone know what material was used and how thick it is for the vertical
section of the following “ The Tree of Sonius” sundial.
I Rather like the style of this sundial.
http://www.regiomontanus.at/bild40_e.htm
Roderick Wall.
-
No virus found in this message.
Checked by AVG -
Hi all,
Would it be better if a different title in the subject line is used.
I almost deleted the your email without reading it. Others may have deleted
it without reading it.
Roderick.
-Original Message-
From: Dave Bell
Sent: Monday, February 13, 2012 12:42 PM
To:
Hi Darek,
Will this program run under Windows 7?
Roderick Wall.
-Original Message-
From: Helmut Sonderegger (Tele2)
Sent: Wednesday, January 11, 2012 8:41 PM
To: sundial@uni-koeln.de
Subject: Re: 2 questions: declination animation
Hi Darek.
a longer time ago, I also wrote such a
Hi Roser,
You forget that some of us live in the southern hemisphere.
Roderick Wall.
-Original Message-
From: Roser Raluy
Sent: Saturday, December 24, 2011 10:35 PM
To: Frank King
Cc: sundial@uni-koeln.de
Subject: Re: Proceedings for Future of UTC meeting
I wish you all a happy
Yes, I gave up after 3 minutes trying to get it to work, it needs to be made
user friendly. I’ll go back and see if I can make it work.
Roderick Wall.
From: Thaddeus Weakley
Sent: Saturday, December 17, 2011 2:00 AM
To: Roger Bailey ; Fabio nonvedolora ; sundial@uni-koeln.de
Subject: Re:
Hi all,
I missed seeing the Lunar Eclipse, not because I forgot but because we had
thunder storms, lighting and lots of clouds.
Maybe if I watch the TV news tonight I might see it.
Melbourne Australia.
Roderick Wall.
From: Brad Lufkin
Sent: Thursday, December 08, 2011 6:05 PM
To: Sundial
Hi,
Is there an electronic version where I can use Google Translate to translate it
into English?
Roderick Wall.
From: Gianni Ferrari
Sent: Thursday, December 08, 2011 6:06 AM
To: LISTA INGLESE
Subject: THE ANCIENT ISLAMIC SUNDIALS - A new book (in Italian)
After a long time I finally
Hi Dave,
I found the following Paper, Vertical Sundial calculator for a Window or wall
interesting.
(1) It uses Google Earth to measure how much the window declines from north
(southern hemisphere) or south (northern hemisphere).
(2) Generates and prints a paper cut-out vertical sundial that
Thank all who have answered my question about Facebook. Looks like Facebook
hasn't changed is still what I thought it was. It would be a pity if traffic
from this groups ends up on Facebook. Maybe we would be better off just
having this group instead of splitting it up with Facebook.
Thanks
Well, we'll just have to make sure we only ask questions and send sundial
information via this group. That way we'll keep this group as to where the
action is for SUNDIALS. We don't need Facebook.
Don't know if Facebook has a front page or what. But Daniel could put a
message there to say
Hi all,
A long time ago I remember hearing bad reports about Facebook. I then
decided that Facebook was a place I wouldn't go to. I note now that a lot of
companies are on Facebook and people are even moving away from Yahoo groups
to Facebook. I'm interested in technical talk but not sure
Hi Kenneth,
Maybe it’s my choice of words. Would I be correct in saying that generally the
term “Horizontal Sundial” doesn't normally refer to a “Polar Sundial”.
Roderick.
From: Kenneth wee-meng LEE
Sent: Wednesday, July 27, 2011 4:09 AM
To: sundial@uni-koeln.de
Subject: RE: Ok, clarifying
Hi Darek,
The garden sundial at the bottom of the 1st page on your website. Looks as
if someone has moved the hour stones to incorrect hour positions. Some hour
stones even look to be just sitting there and are not fixed. But the hour
stones all look to be there with none missing. Is this
recommend this place.
Ragards,
Darek
Dnia 7 lipca 2011 22:39 R Wall maill...@virginbroadband.com.au
napisał(a):
Hi Darek,
The garden sundial at the bottom of the 1st page on your website. Looks as
if someone has moved the hour stones to incorrect hour positions. Some
hour
stones even look
Hi Peter,
I copied and pasted the link into my web browser. But make sure you also
copy/past the 2nd line.
Roderick.
-Original Message-
From: Peter Mayer
Sent: Friday, June 24, 2011 10:37 AM
To: Miguel A. Garcia
Cc: sundial@uni-koeln.de
Subject: Re: E o T diagram
Hi Miguel,
I
Hi Bob,
If you have a look at the Jules Audemars Equation of Time watch movement in my
link you will see a kidney piece.
Roderick Wall.
From: Robert Terwilliger
Sent: Wednesday, June 22, 2011 9:43 AM
To: 'R Wall' ; clc...@mx.nthu.edu.tw ; sundial@uni-koeln.de
Subject: RE: EoT diagram
for the information about the Real-Time-Clock.
Roderick Wall.
From: Jack Aubert
Sent: Thursday, June 23, 2011 9:17 AM
To: 'R Wall' ; 'Robert Terwilliger' ; clc...@mx.nthu.edu.tw ;
sundial@uni-koeln.de
Subject: RE: EoT diagram
By the late 17th century, as clocks became more accurate, clockmakers
Hi ChiLian and Robert,
Thanks ChiLan, your EOT curve is interesting. I suppose anything to do with
sundials has a high chance of being invented before as sundials have been
around for a long time.
Robert, the kidney shape cam in the watch is interesting, is this watch still
in production and
at the top 12 o’clock position. And there are other “sun” information,
what I’m not sure.
By the way ChiLan, I think your time scale is the wrong way around. “+” should
be “-“ and “-“ should be “+”.
Roderick Wall.
From: R Wall
Sent: Wednesday, June 22, 2011 6:18 AM
To: Robert Terwilliger
Hi again,
This is a good link on EOT and watches
http://www.timezone.com/extras/200711101492
Roderick Wall.
From: R Wall
Sent: Wednesday, June 22, 2011 7:08 AM
To: Robert Terwilliger ; clc...@mx.nthu.edu.tw ; sundial@uni-koeln.de
Subject: Re: EoT diagram
Hi all,
After sending my last email
Hi all,
You may find this solar powered Linnaeus flower clock interesting. They say
this clock can be used to complement a Sundial. Does anyone know the
location(s) of a flower clock.
http://en.wikipedia.org/wiki/Linnaeus%27_flower_clock
Regards,
Roderick
Another website for the Linnaeus flower Clock:
http://whisperingcraneinstitute.wordpress.com/2007/03/05/linnaeus-and-the-flower-clock/
Regards,
Roderick Wall.
From: R Wall
Sent: Friday, June 17, 2011 6:58 AM
To: sundial@uni-koeln.de
Subject: Flower Clock to complement a Sundial...
Hi all
Hi Reinhold,
Yes that’s the web page that I was looking for, Thanks. Your sundial looks
great but I have problems reading it as I only know English.
Thanks for your help.
Roderick Wall.
From: Reinhold Kriegler
Sent: Tuesday, June 14, 2011 2:33 PM
To: 'R Wall' ; 'H. Kühtreiber' ; sundial@uni
Hi all,
Some time ago someone posted a link to a webpage (was it the website owner?)
that used Google Earth to measure the declination of a wall. And to generate
a paper vertical sundial that can be pasted onto your window (inside or
outside). Maybe this could be used to calculate the
Hi Hanns,
I reckon it would work if all your sticks are parallel with the axis of the
earth.
Another way to describe this would be: If you were at the North or South
pole. And you stick your sticks (vertical) into the ground the sticks would
all be parallel with the axis of the earth.
Or,
Hi all,
Sara is spot on. If you are going to teach how a sundial works you have to 1st
start with the largest clock in the world, the Earth with a sundial at the
poles. The moment for this clock is the Earth spinning. Then move the sundial
to the Equator of the globe and show how the earth
Hi Mac,
My Laptop has Windows 7 64 bit. Have you tried the Windows 7 'Compatibility
mode. If you type compatable in the new search programs and file window
it will tell you something about running old programs in Windows 7.
You could also upgrade to the professional version of Windows 7 that
Hi Bret,
A Birthday window what a good idea. Maybe something smaller like a wall vent
could be turned into a Birthday Window. I wouldn't want to blacken out a
full size window.
Roderick Wall.
-Original Message-
From: Brent
Sent: Wednesday, March 30, 2011 2:02 AM
To: John
geschreven:
Methinks that sundial depicts the constellations, and not the signs, as
the lines of solstices are markd by Scorpio/Sagitarius and Taurus/Gemini. It's
not common to see sundials constellation-oriented, with precession of
equinoxes taken in account.
2011/3/20 R Wall maill
Hi Darek,
Having so many sundials in one city would be great. We only have one sundial
in a public garden near our library, In the city of Dandenong Victoria
Australia. But Dandenong is only around 150 years old. There was bush and
aboriginals here before that. I also have a sundial watch
HI all,
I found this lovely “Book of Time sundial”:
http://www.fransmaes.nl/genk/en/gk-x12-e.htm
I’ve also found a stone book accessory from a monumental supplier here in
Australia. This looks as if it should be suitable for a book sundial. But as
the sundial will be out in the weather, and
Hi Jackie,
I love your little portable sundials they look great. I have a passion for
portable sundials as they don’t need winding just the sun.
A comment with regard to your website. The instructions are great but are not
correct for Australia, here the sun is to the North. Have you sold any
Hi Marcelo and all,
I use to teach a sundial short course here in Melbourne Australia. The students
made a horizontal sundial using a slate floor tile. We used a sundial ruler to
mark the hour lines etc. Using a sundial ruler means they didn’t have to know
maths. There was one lady who had
Hi all,
This discussion reminded me of 24 hour Military clock from the 1960s. Did a
internet search and found a 24 hour watch. Just the thing for setting the
recorder on the TV as they use 24 hour time.
http://www.aaawatchclub.com/24_hour_dial_gold.html
Roderick Wall.
-Original
Hi John and all,
I wonder if you could design it to also have a spring, string or something, to
allow it to return to it’s correct position after it has been knocked. Would be
better than getting lost.
Roderick Wall.
From: Larry Bohlayer / Celestial Products
Sent: Monday, January 10, 2011
Hi all,
See if you have the correct answer for this:
The magnetic polarity of the earth's North Pole, is it North or South.
You can test it with a correctly marked (N,S) bar magnet suspended on a
cotton string. If the South Pole of the bar magnetic faces North, then the
Earth's North Pole
, January 06, 2011 2:56 PM
To: sundial@uni-koeln.de
Subject: Re: More on Sundial Magnets
On 06/01/2011 20:10, R Wall wrote:
Hi all,
See if you have the correct answer for this:
The magnetic polarity of the earth's North Pole, is it North or South.
You can test it with a correctly marked (N,S) bar
Hi John,
I notice that they also have a magnetic calculator:
http://www.kjmagnetics.com/calculator.asp
Roderick Wall.
-Original Message-
From: John Carmichael
Sent: Thursday, January 06, 2011 3:47 AM
To: 'Mike Shaw'
Cc: 'Sundial List'
Subject: RE: Glass on Glass Mosaic Indoor
The magnets may rust, but Galvanic Corrosion may also be a problem.
http://corrosion-doctors.org/Forms-galvanic/galvanic-corrosion.htm
Roderick Wall.
From: John Carmichael
Sent: Wednesday, January 05, 2011 7:22 AM
To: 'R Wall' ; 'Sundial List'
Subject: RE: Glass on Glass Mosaic Indoor Sundial
Em 04/01/2011 18:04, R Wall maill...@virginbroadband.com.au escreveu:
Hi John, Tony and all,
That?s a great idea. The only part I don?t like is gluing on a thin piece of
rubber. With the sundial outside in the weather, over time the rubber will
perish.
Roderick Wall
Hi all,
Found the following on the eclipse of the Moon on Pitcairn Island in 233
B.C. They say that they were able to determine the longitude of Pitcairn
Island from the eclipse of the Moon and this was in 233 B.C.
http://www.21stcenturysciencetech.com/articles/Pitcairn_Island.pdf
Roderick
Hi all,
I’ve installed DosBox and a bat file for Dialist Companion on my Windows 7
laptop computer. Everything works OK until it runs “Dialcomp.exe”. It comes up
with an error:
X:\Dialcomp.exe
This program cannot be run in DOS mode.
X:\_
Anyone any idea why it’s not working?
Thanks,
Hi all.
I’ve fixed it. It wasn't until I read that Dialist’s Companion was
self-extracting that I realised that I had to 1st extract it.
It now works great, thanks Carl.
Roderick Wall.
From: R Wall
Sent: Sunday, December 26, 2010 9:30 PM
To: Barbara Carl Sabanski ; Sundial Mailing List
Hi all,
I found another photo that is wider and shows all the clusters, not just one
cluster.
http://www.noao.edu/outreach/press/pr01/images/sat_sky_wide_med.jpg
Thanks to all who replied,
Roderick Wall.
-Original Message-
From: R Wall
Sent: Friday, December 10, 2010 10:26 AM
Hi Brent,
The following links shows a photo taken of five geostationary satellites
(using 5 hour exposure). I would have thought that there would be more than
five satellites all in a line, why only five?
http://www.noao.edu/outreach/press/pr01/images/sat_sky_close_lg.jpg
based on where you come from.
Locate a satellite, make its' north/south east/west inclinations
equal zero and navigate half of your world and back again by measuring
the inclination deviations.
R Wall wrote:
Hi Brent,
The following links shows a photo taken of five geostationary satellites
of one
slot, nominally 101 W.
Have Fun,
Brooke Clarke
http://www.PRC68.com
R Wall wrote:
Hi Brent,
The following links shows a photo taken of five geostationary satellites
(using 5 hour exposure). I would have thought that there would be more
than five satellites all in a line, why only five
Hi Brent,
That reminds be of a book that I read that indicated that some society or
club meetings were held on certain days close to the full moon. For example,
every month on the Thursday after the full moon at 9pm. I assume that was to
allow you to use the moon light to travel at night in
Hi Chris,
I liked you sundial. It’s always interesting to see other ideas on how to make
sundials. I’ve printed your sundial onto paper and when I get time I will build
one. How many have you made and what did you use to make them?
Thanks for your ideas, keep them coming.
And welcome to the
Hi John,
A lovely looking sundial. Looks as if the house was made to fit the sundial.
During summer time, does the shadow from the house cover the sundial.
Roderick Wall.
From: John Carmichael
Sent: Tuesday, September 28, 2010 7:47 AM
To: 'Sundial Mailing List'
Subject: New Porcelain
Hi Claude,
Do you have a larger image of the place-mat sundial, it would be good to be
able to read the writing.
Roderick Wall.
--
From: Claude Hartman sunlightdesi...@cs-collectibles.com
Sent: Saturday, September 25, 2010 3:46 AM
To:
-
From: Roger Bailey
To: R Wall ; sund...@rrz.uni-koeln.de
Sent: Saturday, July 31, 2010 1:42 AM
Subject: Re: Sundials, the internet, and education
Thanks Roderick. I checked the link and followed the links to the solar
gnomon at the Rothsay Astrophysical Observatory near Calgary. I
Thanks Len very interesting,
At the bottom of the pdf page is a link to the sundial camera that doesn't
work, try:
http://www.ucalgary.ca/rao/multimedia
Roderick Wall.
- Original Message -
From: Len Berggren
To: sund...@rrz.uni-koeln.de
Sent: Friday, July 30, 2010 1:48 AM
know.
Thomas
On 13 Jul 2010, at 07:35, R Wall wrote:
Hi all,
I want to design a sundial that will be sand blasted onto glass. Our
local glass sandblaster say they need the sundial image to be in the
Encapsulated PostScrip file format (filename.EPS).
I have OpenOffice.org Draw software
Hi Linda,
If you contacted the British Sundial Society I'm sure someone there will
help you to design a sundial. Or ask here.
http://www.sundialsoc.org.uk/
http://www.buildingconservation.com/directory/ad393.htm
Roderick Wall.
- Original Message -
From: Roger Bailey
Hi Brad,
We have just been out watching the Lunar eclipse local time here 9.30pm.
There's a few clouds in the sky blocking it out most of the time, but if you
wait you'll see it. Thanks for letting us know.
Roderick Wall.
Melbourne
Australia.
- Original Message -
From: Brad Lufkin
Hi Yvon,
The 1st data entry in the input window is not in English, I did select
English. Think it is length of dial sides, am I correct?
Roderick Wall.
- Original Message -
From: Yvon Massé ymas...@wanadoo.fr
To: sundial@uni-koeln.de
Sent: Sunday, March 28, 2010 5:22 AM
Subject:
Hi all,
http://www.bbc.co.uk/iplayer/episode/b00rfjd4/Mastercrafts_Stonemasonry/
OK if you live in the UK, but not if you live in Australia, this is what I
get:
Currently BBC iPlayer TV programmes are available to play in the UK only,
but all BBC iPlayer Radio programmes are available to you.
Hi Peter,
A way to determine how good this sundial is to make a model using balsawood
and a magnetic compass and/or with large plastic bottle tops.
Roderick Wall.
- Original Message -
From: Peter Mayer peter.ma...@adelaide.edu.au
To: Chris Lusby Taylor clusbytay...@enterprise.net
Cc:
Hi Tony,
I thought Douglas Hunt was a member of this group, but I could be
wrong. Is there a member's list somewhere with email addresses? Website
emails, how do they receive emails from a mail list if they don't have an
email address.
Roderick Wall.
- Original Message -
How sharp is the point of the cone, wouldn't it be dangerous. I would hate some
kid to climb on it and hurt themselves.
Roderick Wall.
- Original Message -
From: John Carmichael
To: sund...@rrz.uni-koeln.de ; 'Colby Lamb' ; hend...@analemma.nl
Sent: Sunday, August 30, 2009
Hi all,
I came across this numerical tool for sundials and thought that it may be of
interest:
http://acts.nersc.gov/tools.html
Regards,
Roderick Wall.---
https://lists.uni-koeln.de/mailman/listinfo/sundial
Opps I should have read it 1st before sending it :-(.
SUNDIALS (SUite of Nonlinear and DIfferential/ALgebraic equation Solvers)
refers to a family of closely related solvers:
Sorry,
Roderick Wall.
- Original Message -
From: R Wall
To: sundial@uni-koeln.de
Sent
Hi Damia,
I've printed and cut out a paper sundial for Melbourne Australia and so far
it looks good. I will check the times when the sun is shining on the north
wall.
The only comments I make are:
(1) Part of the dial is up beyond the top edge and is not printed, that's no
problem as I know
Hi Fabio,
I've just had a play with your program and it looks good.
I put in my location which is near Melbourne Australia: 145 deg 12'
longitude East, 37 deg 59' South. and it shows the SUN being south of the
equator. Am I reading the results incorrectly.
Roderick Wall.
- Original
Hi all,
This discussion has been interesting. I found the following patent for a
chiming sundial.
http://www.google.com/patents?id=1Bg6EBAJdq=7114262
Am I correct in saying that this wouldn't be accurate because the changes in
the equation of time are not taken into account for the
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