Dear all,
I deeply regret to inform you that Fer de Vries, honorary member of the
Dutch Sundial Society, passed away on April 1, at the age of 78. The
funeral service was held today privately. He suffered from a stroke two
years ago, from which he only partially recovered.
He was a pivotal m
David,
See: www.amazon.co.uk/exec/obidos/ASIN/B009NMD7T2/ref=nosim/1557
Best regards,
Frans Maes
On 10-11-2014 17:19, David wrote:
/Hebrew and Greek Scriptures compared with Oriental History/
---
https://lists.uni-koeln.de/mailman/listinfo/sundi
Dear Helmut & all,
I don't think Woody Sullivan's sundial is "very similar" to Willy
Leenders' impressive sundial. From a typological point of view,
Sullivan's sundial is a shepherd dial. It uses the altitude of the sun
to show the time. Willy Leenders' dial is a nodal dial, similar to a
scap
Hi Roderick,
Was it perhaps an "Erickson Polar Equatorial Dial" that you had in mind?
See one example in Denver, Colorado, at:
www.wsanford.com/~wsanford/exo/sundials/co/denver/cranmer/index.html
The NASS registry lists about 12 dials of this type.
Best regards,
Frans Maes
On 26-1-2013 4:50,
Hi John,
You might have a look at:
- Astrovisuals' sun disk: http://www.astrovisuals.com.au/SunDisc.html
- Astromedia: http://www.astromedia.de/. They have several sundial
types. The site is in German; just remember that sundial = Sonnenuhr.
Not for continuous outside placement.
Best regards,
I agree completely!
Frans Maes
On 14-8-2011 11:43, Geoffrey Thurston wrote:
I have been an avid reader of and an occasional contributor to this list for
many years but I am concerned about its present state of health. It has
previously been customary for contributors to make a posting (a questio
Dear Donald,
One can use the moon's shadow as long as it is distinguishable at night,
say, one week either side of full moon. For an example, see:
http://www.fransmaes.nl/genk/welcome-e.htm, choose menu item 7 and
scroll down in the right-hand frame to "The moon dial".
Best regards,
Frans Mae
I also agree, also as a mock HORIZONTAL dial. The intended latitude Phi
should be related to the angle A between the 12 and 9 (or 3) hr lines
as: sin(Phi) = tan (A). [For a vertical direct south dial, change sin
into cos.] As A is clearly more than 45°, tan(A)>1, which is beyond the
reach of th
Hi all,
It was fun to reconstruct the state of the solar system on May 8, 1774.
Why that date?
On that day the moon, Mercurius, Venus, Mars and Jupiter would come
together in the sign of Aries. This led to panic, as the cosmos was by
many expected to collapse. An amateur astronomer, Eise Eis
Hi Martina,
An analemmatic sundial may just be painted onto the pavement of the
schoolyard, which should - after drying - take away any safety risks.
Otherwise you might have a look at:
- the Sun Disk from Astrovisuals,
http://www.astrovisuals.com.au/SunDisc.html
- the Sundial Science Construc
Hello Roderick & all,
The Dutch Sundial Society had its quarterly meeting last Saturday in
Utrecht. A new member, Karin ten Kleij, pointed out some Sicily dials
she had found in the internet, which are adorned with the 13
constellations. An intriguing coincidence!
In these cases the constellatio
Dear all,
Willy is right in noting that instructions on information panels don't
work. I very much like the footprints. I think they are effective, with
or without explanatory text. From left to right in the attached
composite picture (in black & white; the color version, at 39 kB, did
not pa
Dear Darek,
Thank you for this beautiful Christmas present! I'll hope to keep it
longer than just one year.
Best regards,
Frans Maes
On 8-12-2010 1:59, Darek Oczki wrote:
Dear friends
As the year 2011 is approaching I would like to present to all of you
a special calendar showing the best of
Hi Roderick,
Follow the link you gave earlier:
http://www.noao.edu/outreach/press/pr01/0106images.html
Scroll down the page and click on the link below the wide thumbnail:
http://www.noao.edu/outreach/press/pr01/images/sat_sky_wide_sm.jpg
It will give you the photo you are anxious to see. The ear
Dear Willy,
I will send you a copy.
Kind regards,
Frans Maes
On 30-11-2010 18:14, willy.leend...@telenet.be wrote:
Preparing an article for the bulletin of 'Zonnewijzerkring Vlaanderen'
(The Flemmish Sundial Society) I am in search of a copy of
Sarah Syman, Shadow Clocks and Sloping Sundials of
Dear Tony,
The ITINERARIO "ARTE & SCIENZA":
http://www.astrofilibresciani.it/Attivita/Attivita_Scuole/Tour_Astronomico.htm
has several stops related to astronomy and sundials. Last year I
downloaded an English version, but it seems that presently only the
Italian version is available. I think yo
Dear Nicola & all,
Thank you, Nicola, for collecting all these links to old sundial texts.
Most of the classical textbooks of gnomonics can be found here. I had
some good hours browsing through this impressive collection.
I couldn read only some, but often enjoyed the nicely engraved figures.
U
Dear Roger, Damia and all,
Instead of fiddling with the display settings of the monitor, I use the
Pen Tool of my image processing program, Paint Shop Pro, to measure wall
declination. I guess other programs have a similar tool.
When drawing a straight line over a sharp picture element parallel
modelling by Gérard Baillet and calculations from Denis Savoie).
>>
>> Best regards
>> Joël
>> 48°01'25'' N, 1°45'40" O
>> ---> http://www.cadrans-solaires.fr/
>>
>>> - Original Message -
>>> From: "Fra
Dear all,
The audio track of the video is bad, so I was unable to hear which dam
this is, and how the sundial would function. Does anyone know more about
this intriguing project?
Best regards,
Frans Maes
Josef Pastor wrote:
>
> Dear Dialists,
>
> Famous French Denis Savoie presents a French
l
Society, nr. 95.1.
See also www.fransmaes.nl/sundials, click "Sundials??" in the menu.
Best regards,
Frans Maes
Alexei Pace wrote:
> Do not forget the very interesting sundial by Piet Hein as well which
> is based on the helix.
>
>
> On Thu, May 14, 2009 at 8:26 PM,
Hi Chiu, John & all,
The sundial by Duixans (1984) reminds me of the well-known photo of a
gentleman checking his watch against a spiral sundial in a rainy scene.
Hopefully the attachment (26 kB) makes it to the List.
The photo is from Heinz Schumacher, Sonnenuhren. According to the
caption,
Hi John & John,
I think John is right, given the mention "This photo also belongs to:
Escher's Droste Print Gallery" to the right of the picture.
For the "Droste effect", see:
http://en.wikipedia.org/wiki/Droste_effect.
The well-known artist Maurits Escher used it for instance in his print
"Pr
Sorry for the late posting, but we were off-line for a week.
I agree with Gianni: this seems to be a correct and interesting design.
Just a guess: the dots may be led's that show the time also at night.
And as Tokushima is less than 0.5° west of the Japanese time zone
meridian, this might be civ
Dear John & all,
Imagine a building on a west-coast seaside resort. As the sun sets, the
terminator (the shadow of the horizon) creeps slowly up its wall. It
takes only two lines of elementary geometry to proof that the height of
the shadow increses with the SQUARE of the time. Mathematically
Dear John and all,
Quite an interesting idea!
I wondered how the terminator on a sea-side building looks like. In
particular, is it sharp enough to enable the proposed observations?
Is there perhaps a YouTube movie showing the terminator?
And would atmospheric refraction come into play somehow?
Dear Leandro,
Perhaps you found out already that the sundial in front of the Adler
Planetarium was designed by the great sculptor Henry Moore. He was a
master of simplicity! It certainly is large: 3.6 meter in diameter.
That's why it has such a heavy foot. You can find more about this dial
in
Keith,
What you want is quite simple, once you grab the idea. Imagine a
classical vertical dial, including its pole-style. Take one point
somewhere on this style, and remove the style except this point. How to
prevent it from falling down? Yes, put it on top of a supporting rod. In
your case,
Dear Roger,
I forgot earlier to comment on one line of yours.
> The later Braunschweig sundial, 1346 perhaps, represents a "seismic
> shift" in the understanding time and the universe. The angles on this
> dial are correct for a polar gnomon and would show equal time throughout
> the seasons.
Hi Patrick,
This device obviously is a "Wheatstone folding-type polarization
sundial". See Allan Mills' article "The sellotape sundial" in BSS
Bulletin 98.1, p. 3-9, especially figure 7.
Best regards,
FRans Maes
Patrick Powers wrote:
> Can anyone throw light on the interesting device to be fou
Dear all,
[EMAIL PROTECTED] wrote:
>
> It is true that the first mechanical clocks was on the towers around
> the begin of the 1300. And the first vertical sundials with the polar
> gnomon was done arond the first half of 1300. The interesting
> articles of Curt Roslund in the BSS Bulletin, septe
Dear all,
The DGC catalog mentions 4 sundials on the Braunschweig cathedral. The
discussion does not refer to the 'new' ones from 1518 and 1715, but to
two older ones, from about 1334 and about 1346. The hour line patterns
(attached) show two ways of playing around with the lines, in the
tria
Dear Frank,
Frank King wrote:
> You don't need a polar-oriented gnomon to
> indicate equal hours (starting at noon or
> midnight) although it certainly helps.
>
The way I view the transition from temporary to equal hours follows
Zinner's reasoning. The usual medieval sundial was vertical and
s
Dear Frank (King),
Frank King wrote:
> No doubt the transition to equal hours (whether
> starting at noon, midnight, sunrise or sunset)
> was gradual but I feel it long predates mechanical
> clocks.
Do you have any evidence supporting your feeling?
I have studied the question when the pole-styl
matic dial!
What do you think?
Best regards,
Frans Maes
[EMAIL PROTECTED] wrote:
> YES!!! Why didn't any of us think of this?
> John
>
>
> --- On Sat, 28/6/08, Frans W. Maes <[EMAIL PROTECTED]> wrote:
>
>> From: Frans W. Maes <[EMAIL PROTECTED]>
&g
Dear John,
What you describe resembles an azimuth sundial. See for instance the
Plochingen sundial in Karl Schwarzinger's collection:
http://members.aon.at/sundials/bild44_e.htm
In this case, there would be no clear-cut alignment with anything,
including the (in)famous path...
Best regards,
Fra
Hi John and other travelers/vacationers,
In case you have some time in Amsterdam before embarking for this Grand
Tour, enjoy the Amsterdam Sundial Trail:
www.fransmaes.nl/sundials/amsterdam .
In Strasbourg you should not miss the sundials at the south transept of
the Cathedral and the 26-sided
Hi Hans,
One such sundial is at the Tourist Office in Virton (Belgium). It was
made for the eclipse of 11 August 1999. Virton is in the very south of
Belgium, and only this tiny region saw a totality.
For a photo:
- go to http://www.gnomonica.be/
- click "Sundials in Belgium"
- click "Wallonia"
Dear John,
Thank you for bringing this to our attention!
The Wilanow Palace sundial photo and its description can also be found
at: http://en.wikipedia.org/wiki/Image:Warsaw_Wilanow_Palace_sundial.jpg
This is indeed an interesting sundial, but also an interesting photo.
Karl Schwarzingers photo
Hi all,
Looking for something else, I happened to hit upon this link:
http://www.anistock.com/3d-animation-of-a-monument-rotating-cpi8466.html,
showing an 'animation' of a multiple sundial. An odd sundial: note the
missing and incorrect gnomons.
Strangely enough, it bears a strong resemblance
Hi all,
Roger is right. The width/height ratio of the computer display can
simply be changed by the manual controls below the screen. When sending
pictures, or placing pictures on a website, one cannot be sure that the
addressee or visitor sees what one intended him/her to see. However, the
di
Hi all,
Those of you who consider visiting Amsterdam in the near future might
have a look at the Amsterdam Sundial Trail website:
http://www.fransmaes.nl/sundials/amsterdam/
It presents some interesting dials and dials in interesting locations,
such as canal house gardens. A trail description w
Hi Doug,
A beautiful dial is in the Hong Kong University of Science and
Technology. See www.fransmaes.nl/sundials, and in the Index choose H.
In Google Earth, look at 22°20'16" N, 114°15'47" E.
Have a nice trip!
Frans Maes
Douglas Bateman wrote:
> I am to visit Hong Kong next week for a 6 days
Dear Roger,
An intriguing story! Thank you for making this available to us all.
What I wondered about: how accurately could longitude be determined
around 1600? That problem was tackled only over a century later...
Best regards,
Frans Maes
Roger Bailey wrote:
>
> At the BSS meeting in Cambridg
Hi Fred and all,
I recently bought the book. Unfortunately, it appeared to be a repriont
of the 2nd edition from 1889, and not the 4th edition from 1900. So beware.
Frans Maes
Fred Sawyer wrote:
>
> Dialists who have always wished they could get a printed version of Mrs.
> Gatty's Book of Su
Dear Frank &all,
Frank King wrote:
> The expression now turns into a function of time:
>
> a . (coslat/cos(dec(t)) . sqrt(coslat^2 - sin(dec(t))^2)
>
> THIS is the expression to integrate over a whole year and
> whose average should be found. THAT result is where the
> markers should be plac
Dear Doug,
I have to confess that my Genk site does not reflect the actual look of
the Genk Sundial Park, as it is being reorganized right now. This
implies the addition of a bicycle path (yielding a shortcut to the
nearby Europlanetarium, www.europlanetarium.be). This necessitated the
rerouti
Hello Noam,
The orientation of the gnomon rod (or even its shape or mere existence)
is irrelevant. The time is read from the shadow of the gnomon TIP, in
other words from an index or nodus point. A pole-style is only useful
for showing EQUAL hours, as only the sun's hour angle is constant
thro
Dear Frank & all,
On the meaning of "PI Long":
Waugh uses the symbol P in his computational treatment of the declining
dial on p. 80. The P values for each hour line in table 10.2 are "what
Holwell (in Clavis Horologiae, London 1712) calls the polar angles". The
polar angle for noon equals the
Dear Chris, Bill & all,
I can add some information, based on my article on the Genk cone dial in
the Bulletin of the Dutch Sundial Society, May 2005.
Javier Moreno Bores mentioned the relationship between conventional hour
lines and Bab. & Ital. hour lines already in his article in the NASS
Co
I forgot to add that Joël Robic's picture shows the LuxFlamma even better!
Frans
robic.joel wrote:
> Hello Franz
>
> I agree with Roger, it seems to come from Artissime, you can see other
> examples (without yin and yang) from Briançon shop on the jpeg.
> And another similar one made by Yves Opi
for
> the ying yang dual dials that I can see.
>
> Roger Bailey
> N 48.6 W 123.4
>
> A shoppe is boutique shop as in Olde Tyme Shoppe
>
> -----Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] Behalf Of Frans W. Maes
> Sent: January 30, 2007
Hi all,
Someone showed me the pendant in the attached photo. It seems to have
two sundials in a kind of yin-yang arrangement. The glass beads focus
the sunlight. When properly positioned (equatorial and the long arrow
pointing south) the bright spot might show the hour. The diameter is ca.
30
Dear Willy and all,
The hour lines still (partly) visible were laid out as a millennium
project. An earlier project was started in 1939, but was interrupted by
the beginning of World War II. It is interesting to note that some
traces of those hour lines are still visible; in the attached pictu
Hi Joe,
The URL of the Japanese Sundial Society is:
http://www.ne.jp/asahi/sundial/hidokei/index.html
I am sure their e-mail address is at the bottom of the main page :-)
Best regards,
Frans Maes
newmail wrote:
Friends,
Do you know the electronic address of the Japan Sundial Society?
Thank y
Tracy Paine wrote:
Thanks Frans for your info! If I understand you correctly, you are
saying that the analemma is positioned along the E-W line? Horizontal
instead of vertical?
The vertical line in the figure is the regular date line, which is on
the N-S line (minor axis) of the ellipse. Th
Hello Tracy,
Sorry for jumping in so late.
You like to have an analemma associated with the date line? There is a nice
way, introduced by Marinus Hagen, founding father of the Dutch Sundial
Society. See the small attached figure.
One should stand right on the date line, as explained before. The
Dear Reinhold & all,
Just to set the record straight: the photo in the English summary of the
May 2006 Bulletin depicts the old polyhedral sundial that was recently
brought to the Eise Eisinga Planetarium in Franeker.
Actually, I would not call it a "polyhedron", as I would reserve that
term
ine, in
1976.
Best regards,
Frans
- Original Message -
From: "Roger Bailey" <[EMAIL PROTECTED]>
To: "John Carmichael" <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>; "Frans W. Maes" <[EMAIL PROTECTED]>;
<[EMAIL PROTECTED]>
Sent:
Hi John & all,
I believe you absolutely when you told us: " The shadow tests on the conical
gnomon worked great even at low solar angles" and "I love the shadow cast by
a plumbob. It is so dramatic and visible".
What I wondered about is the following. When estimating the position of the
plumbob t
Hi Frank,
In Roman Catholic churches I noted always 14 Stations, numbered I-XIV.
Generally, they are placed symmetrically along the walls of the nave, thus
nr. I-VII on one side and VIII-XIV on the other.
Regards,
Frans Maes
- Original Message -
From: "Frank Evans" <[EMAIL PROTECTED]>
T
Dear Mike & all,
The most popular garden-center sundial around here is the armillary sphere.
They always read local solar time. Stimulated by questions of (prospective)
buyers, I once tried to write a fail-safe, fool-proof instruction for
correct installation. There are differences with horizontal
For an equatorial dial with a square gnomon giving rise to four pole styles,
go to www.fransmaes.nl/sundials, click "Pole style - equatorial" and then
the first thumbnail in the page. Interestingly, the two sides of the dial
face have been relocated so as to avoid kneeling down in fall and winter.
, of which
Fouchy was secretary. So it would be interesting to know the source for the
claim from Québec.
To be continued?
Regards,
Frans Maes
- Original Message -
From: "Patrick Powers" <[EMAIL PROTECTED]>
To: "SundialList"
Sent: Monday, October 17, 2005 5:
Dear Frank & all,
[Sorry, previously sent to Frank only]
The Dutch sundial catalog (Zonnewijzers in Nederland, by Van Cittert-Eymers
& Hagen) mentions as the oldest public analemma in the country: an analemma
carved in stone at a sundial on a house in Jutphaas (south of Utrecht) from
1831 (cat.nr
Hi Alexei,
In addition to the common horizontal and vertical types, you may find
pictures of equatorial, polar, spherical, polyhedral, nodal, meridian,
bifilar, shadow plane, conical and digital dial in my sundial site:
http://www.fransmaes.nl/sundials
- Original Message -
From: "Alexei
Hi David,
I am interested in polyhedron dials. What is a cuboctahedron? A cube with
the 8 corners cut? That would leave 6 octagons and 8 triangles.
Regards,
Frans Maes
-
Dear Nicola and all,
Thanks to Jack Aubert I can respond to your posting. I often regret being
unable to read Italian or Spanish, as so many important gnomonic
publications appear in these languages!
The primary aim of my article on the sundial of emperor Augustus was to
bring the important pape
y spheres were first used specifically as
clocks.
Best regards,
Frans W. Maes
53.1 N, 6.5 E
www.fransmaes.nl/sundials/
- Original Message -
From: "heiner thiessen" <[EMAIL PROTECTED]>
To: "'Sundial Mailing List'"
Sent: Wednesday, July 13, 2005 7:20 PM
Subj
Hi all,
Due to problems with my previous web host, I had to move my sundial sites to
a new hosting service. The old site does not even provide a redirection
notice. Please update your bookmarks / favorites.
Zonnewijzers/sundials (Dutch & English): www.fransmaes.nl/zonnewijzers/
Shortcut to the E
Hi Anselmo & all,
In my webpage www.fransmaes.nl/sundials/ - "Analemmatic" - "extra info" -
"The human scale", I calculated the shadow paths for a 2 meter gnomon (human
with hands above head) in dials of 6 and 10 meter major axis, for latitudes
of 35, 45 and 55 deg.
I find it no problem to exten
Hi John & all,
Only after I saw the cupolas in your links, I understood that these were not
dome-shaped, but square. I found some examples in the Netherlands, which I
put temporarily on my website, at: www.fransmaes.nl/sundials/cupola.htm .
You surely will show us the results of your enterprise?
Dear sundial friends,
I lost last year's sundial list messages, due to some mishap with our new
e-mail server. As far as I know, the list is not officially archived. Has
anyone perhaps collected the postings from 20 Jan. 2004 to 19 Jan. 2005?
Please mail me off-list before sending :-)
Thanks!
Fr
Dear Mike, Hal and all,
I am sorry that I could not respond earlier to Mike's posting. Last year I
wrote an article about a related question, from which I have some relevant
information, perhaps also for Hal :-)
1) The earliest evidence for pole-style dials in Europe.
The only author who did ext
Dear Mike, Hal and all,
I am sorry that I could not respond earlier to Mike's posting.
Last year I wrote an article about a related question, from which I have
some relevant information, perhaps also for Hal :-)
1) The earliest evidence for pole-style dials in Europe.
The only author who did ex
"Mike Cowham" <[EMAIL PROTECTED]>
References: <[EMAIL PROTECTED]>
Subject: Re: Earliest Sundials
Date: Mon, 10 Jan 2005 10:09:32 +0100
MIME-Version: 1.0
Content-Type: text/plain;
charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Sender: [EMAIL PROTECTED]
Pre
uot;Peter Mayer" <[EMAIL PROTECTED]>
To: "Frans W. Maes" <[EMAIL PROTECTED]>
Cc:
Sent: Monday, November 22, 2004 12:14 AM
Subject: Re: 'Wineglass' of Sonius
> Dear Frans,
>
> >The 'Tree of Sonius' is basically not a vertical pole-style di
Peter,
The 'Tree of Sonius' is basically not a vertical pole-style dial, but a
shadow plane dial. You are therefore free to arrange the hour lines any way
you like. So you might as well retain the tree shape. See the entry #11 in
my website on the Genk Sundial Park: www.fransmaes.nl/genk/ .
Rega
Hi all,
I had the same question three years ago. After consulting some Italian
sundial contacts, Gianni Ferrari provided the solution:
..
The strange "dial" is one of five works that the municipality has ordered in
1994 to five artists in the intent to give life to a project of museum of
mod
t regards,
Frans W. Maes
- Original Message -
From: "Willy Leenders" <[EMAIL PROTECTED]>
To: "John Carmichael" <[EMAIL PROTECTED]>
Cc:
Sent: Tuesday, August 03, 2004 12:58 AM
Subject: Re: On northern vs. southern dials
Hello John;
At the website
http://www2
Hi all,
Returning from holidays, I drop in a little late, I know.
Johns intention makes good sense and is absolutely worthwhile. Just one
additional advantage of listing/graphing the combined EoT+longitude
correction may be mentioned. For sundials which are more than 4 degrees away
from the sta
Dear John,
With respect to your third point:
A well-known trick to avoid text on the back of a photo (or book page, etc.)
to 'seep through' into the scan, is to place a sheet of black paper behind
the photo or page. The result may get a little darker overall, but that can
easily be corrected by t
Hi John,
Don't print out 65 pages of paper prints, one for each slide. Instead, go to
File - Print. Under Print what, choose Handouts. In the box Handouts, choose
Slides per page: 3. Next to each slide you will get space to write your
notes.
Frans
- Original Message -
From: "John Carmi
Douglas,
You may see a 'spider sundial' in Karl Schwarzinger's pages:
http://members.aon.at/sundials/bild44_e.htm
Regards,
Frans Maes
- Original Message -
From: "Douglas Hunt" <[EMAIL PROTECTED]>
To:
Sent: Thursday, March 11, 2004 11:02 AM
Subject: Does anyone recognise the term "spid
Hi Marcin & all,
> I'm looking for any information about the first use (or the first records)
> of horizontal and vertical sundial ? Where it was, when etc.
> I read about sundial history and I found quite a lot information about
> the oldest, most simple dials (gnomons, obelisks etc) but I can'
520-696-1709
Email: [EMAIL PROTECTED]
Sundial Sculptures Website: http://www.sundialsculptures.com
Stained Glass Sundials Website:
http://advanceassociates.com/Sundials/Stained_Glass
- Original Message -
From: "Frans W. Maes" <[EMAIL PROTECTED]>
To: "Sundial List"
Sent: Wednesda
page:
http://www.biol.rug.nl/maes/zonnewijzers/nl/torquay.htm
Bon voyage!
Frans W. Maes
53.1N 6.5E
-
Hi Richard & all,
There is a picture of a Dali dial (:-) in the site of Andreas Hänel from
Osnabrück (in German):
http://www.physik.uni-osnabrueck.de/~ahaenel/sonnuhr/
Scroll to Spanien/Katalonien - Cadaques.
It is dated 1966. Judging from the hour line pattern, the dial is
east-declining by 6
Hi Ronit,
Go to www.fransmaes.nl/sundials/ and choose "Analemmatic - extra info".
The first topic gives an intuitive explanation (I hope).
Regards, Frans
- Original Message -
From: "Ronit Maoz" <[EMAIL PROTECTED]>
To: "SUNDIAL MAILING LIST"
Sent: 23 January, 2004 3:23 PM
Subject: expla
Hi Douglas & all,
It doesn't obey the initial conditions, but maybe a play-object is allowed
in a playground. How about a horizontal bar, on which children may turn
somersaults etc.? It can double as a sundial: let the bar just tilt 2 deg (3
cm at 1.70 m length), North end upward. Hour lines are
Dear sundial friends,
Some two years ago I published a website in Dutch about the unique Sundial
Park in Genk (Belgium), a permanent exhibition of classical and novel
sundials.
Finally, the English version is out. Have a look at:
www.fransmaes.nl/genk/welcome-e.htm
I hope you enjoy it! If you h
Hi all,
Those of you interested in analemmatic dials might like to have a look at
some new or updated pages.
1) A split-analemma analemmatic dial, designed by Len Berggren and Brian
Albinson, at a Simon Fraser University parking lot. See:
http://www.sfu.ca/mediapr/sfu_news/archives_2003/sfunews1
Dear Arthur,
Thank you for your creative mathematical approach to the helical dial. It
furthered my thinking. In fact, in Piet Hein's dial (and in John Moir's
model) the time is read not from the lower part of the helix, but from its
center line. We could therefore omit one coil of the helix and
Hi Richard,
It seems you have reinvented Piet Hein's helical dial. See the home page of
Egeskov Castle, http://www.egeskov.dk/english/sightseeing/index.htm
and click nr. 25 on the map or in the list below it.
John Moir showed already that the dial does not function well outside the
equinoxes in
Art,
I like your tenacity! What else would a Discussion List be for? Much too
often a discussion wanes before the issue has really been resolved or at
least clarified; in a party, a café as well as on this list...
Keep asking questions!
Frans Maes
53.1N 6.5E
- Original Message -
From: <
Mac,
Congratulations on this stylish double-styled gem!
John,
Your bet is easily lost, see http://members.aon.at/sundials/bild30_e.htm. I
am welcoming your case of whisky at 53.1N 6.5E.
Regards, Frans
- Original Message -
From: "John Carmichael" <[EMAIL PROTECTED]>
To:
Sent: Saturday,
Hi all,
Two years ago there was a discussion on this list about various types of
hours, from which I cite the following fragments, about canonical
(ecclesiastical) hours.
Fer de Vries described the canonical hour as:
Draw half a circle on a south facing vertical plane and devide the circle in
12
- Original Message -
From: "Claude Hartman" <[EMAIL PROTECTED]>
To:
Sent: Wednesday, October 15, 2003 8:41 PM
Subject: Re: New Sundial books?
> Is there a collection of those CLOCKS magazine articles?
Hi Claude and all,
The "Sundials on the Internet" site
http://www.sundials.co.uk/h
it might be
the start for a really NEW sundial book...
Regards,
Frans W. Maes
53.1N, 6.5E
- Original Message -
From: "Claude Hartman" <[EMAIL PROTECTED]>
To:
Sent: Monday, October 13, 2003 6:56 PM
Subject: New Sundial books?
> Hi dialists!
>
> Does anyone k
Hi all,
Astrobiology Magazine has an interview with Bill Nye 'the Sundial Guy', on
the sundials that are on their way to Mars right now:
http://www.astrobio.net/news/article625.html
Regards, Frans
-
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