Hi all,
Thank you for the clarifying responses to my query. Especially Fred for the
Thew patent form and the reference to the article in the NASS Compendium
1(2). It stretches the heritage of our beautiful garden dial more than two
centuries. Wow!
Regards,
Frans Maes
53.1N, 6.5E
-
,
Frans
==
Frans W. Maes
53.1°N, 6.5°E
www.biol.rug.nl/maes/sundials/
-
Hi Bob,
I know; it was already in the page I mentioned in my e-mail:
http://www.biol.rug.nl/maes/zonnewijzers/en/whitehall-e.htm
Thanks anyway!
Frans
- Original Message -
From: Robert Terwilliger [EMAIL PROTECTED]
To: sundial@rrz.uni-koeln.de
Sent: Thursday, September 12, 2002 3:19
Hi all,
Last year I bought a garden sundial of a type which I call an inverted
armillary sphere; see my web page:
http://www.biol.rug.nl/maes/zonnewijzers/en/whitehall-e.htm .
This model is being sold in stores for garden ornaments, also on the web. A
company named Whitehall may be 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
.
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,
With respect to the bifilar polar dial in Appingedam (NL), my site
factors. But the difference will
generally go unnoticed, I presume.
As far as I can see, no EoT correction is present in this design.
Regards, Frans
==
Frans W. Maes
53.1ƒN, 6.5ƒE
www.biol.rug.nl/maes/sundials/
- Original Message -
From: Anselmo PÈrez Serrada [EMAIL
Hi Hans and all,
Some vineyard dials can be seen at my sundial site:
http://www.biol.rug.nl/maes/zonnewijzers/welcome-e.htm
Choose Index from the menu and go to Pommern.
The DGC catalogue (see under menu option Sundial societies - Germany)
lists several more, but I could not find pictures of
Hi All,
In my previous e-mail I noted a clear-cut case of plagiarism which I saw in
the latest issue of the NASS Compendium. This might have been be mistaken
as if some item in The Compendium was plagiarized. If that is the case, I
apologize for my poor usage of the English language. What I
year.
Have you considered an inverted armillary sphere? Examples can
be found at my page Pole-style - equatorial in the bottom row of
thumbnails.
Please keep us informed about the results!
Regards, Frans
=
Frans W. Maes
Peize, The Netherlands
53.1 N, 6.5 E
] *
* The Netherlands* *
* Home page: http://www.phys.uu.nl/~vgent/homepage.htm *
=
Frans W. Maes
or
a
notch in an edge. Sometimes the node is an aperture in a plate, casting a
spot of light on the dial face.
Kind regards,
Frans
=
Frans W. Maes
Peize, The Netherlands
53.1 N, 6.5 E
www.biol.rug.nl/maes/sundials/
=
this convention.
Kind regards,
=
Frans W. Maes
Peize, The Netherlands
53.1 N, 6.5 E
www.biol.rug.nl/maes/sundials/
=
regards,
=
Frans W. Maes
Peize, The Netherlands
53.1 N, 6.5 E
www.biol.rug.nl/maes/sundials/
=
building), the
copy was moved south by almost 10 degrees.
Was the tilt of the dial changed accordingly, or does its pole-style miss
Polaris by some 10 degrees ever since 1980?
Regards, Frans
Dr. Frans W. Maes
Dept. of Animal Physiology
University of Groningen
P.O. Box 14
---
=
Frans W. Maes
Peize, The Netherlands
53.1 N, 6.5 E
www.biol.rug.nl/maes/sundials/
=
a large
dial? would it be wise thus to use analemmas to derive the civil time/ ?
Is a normal triangular gnomon good? In this case it has to project around
60cm out from a limestone wall.
thanks for your input
Alexei
=
Frans W. Maes
Peize
I)
knowing about it. Too bad!
The site is (still) in German, but lots of pictures illustrate the many
features
of this marvellous work of gnomonic art.
Regards, Frans
=
Frans W. Maes
Peize, The Netherlands
53.1 N, 6.5 E
www.biol.rug.nl/maes/
=
would be
happy if you let me know. Nevertheless I hope you will enjoy your
visit!
Regards, Frans
Dr. Frans W. Maes
Dept. of Animal Physiology
University of Groningen
P.O. Box 14Tel. : +31-50-3632357
9750 AA Haren Fax : +31-50-3635205
talk of each
arm being a cube, but that isn't really practical in this case.
Help appreciated
Mike Shaw
Wirral, UK
53' 22 N
03' 02 W
=
Frans W. Maes
Peize, The Netherlands
53.1 N, 6.5 E
www.biol.rug.nl/maes/
=
No wonder there is a power problem around there!
Frans
Actually it is dark, but the lights are on. See the amazing photo at
http://antwrp.gsfc.nasa.gov/apod/image/0011/earthlights_dmsp_big.jpg
Daniel Wenger
=
Frans W. Maes
Peize, The Netherlands
53.1 N
!!!
Makes washing those dishes a little more fun!
John Carmichael
Tucson AZ
p.s. Does this mean that earth is itself a sundial, and the raindrops are
the gnomon?
Dr. Frans W. Maes
Dept. of Animal Physiology
University
site I an preparing right now.
Regards, Frans
Dr. Frans W. Maes
Dept. of Animal Physiology
University of Groningen
P.O. Box 14Tel. : +31-50-3632357
9750 AA Haren Fax : +31-50-3635205
hour numbers ran VI,
VII...XI, 0, I, II...VI.
Regards,
=
Frans W. Maes
Peize, The Netherlands
53.1 N, 6.5 E
www.biol.rug.nl/maes/
=
=
Frans W. Maes
Peize, The Netherlands
53.1 N, 6.5 E
www.biol.rug.nl/maes/
=
Date sent: Tue, 17 Oct 2000 11:54:34 +0100
From: Chris Lusby Taylor Chris.Lusby-
[EMAIL PROTECTED]
Organization: Oracle Corporation
To: Frans W. MAES [EMAIL PROTECTED]
Copies to: Warren Thom [EMAIL PROTECTED], sundial list
already expanded the English
summary slightly.
Regards, Frans
Dr. Frans W. Maes
Dept. of Animal Physiology
University of Groningen
P.O. Box 14Tel. : +31-50-3632357
9750 AA Haren Fax
and sometimes a
brief explanation.
I nevertheless hope you enjoy the trip!
Regards, Frans
Dr. Frans W. Maes
Dept. of Animal Physiology
University of Groningen
P.O. Box 14Tel. : +31-50-3632357
9750 AA
and might be
easier to use than a blade or saw.
Shops for outdoor activities like backcountry camping and hiking
sell wire saws like that, with two rings attached at the ends to pull
back and fro.
Regards, Frans
=
Frans W. Maes
Peize, The Netherlands
53.1 N
10 (National
Heritage Day). Some pictures are at:
http://www.biol.rug.nl/maes/zwkring/hasselt.htm
(text in Dutch, I am sorry).
Have a nice stay!
Regards, Frans Maes
=
Frans W. Maes
Peize, The Netherlands
53.1 N, 6.5 E
www.biol.rug.nl/maes/
=
.
Regards, Frans
=
Frans W. Maes
Peize, The Netherlands
53.1 N, 6.5 E
www.biol.rug.nl/maes/
=
head would
therefore form a nodus whose shadow would fall on hourlines drawn from the
dial's origin.
I only know of one such dial in the UK but there may be more in the US.
You made us curious. Where is that dial to be found?
Regards, Frans
=
Frans W. Maes
dial, I think.
Dr. Frans W. Maes
Dept. of Animal Physiology
University of Groningen
P.O. Box 14Tel. : +31-50-3632357
9750 AA Haren Fax : +31-50-3635205
The NetherlandsE
/world_tzones.html,
as of July 1998. Time zones run from UT-12 to UT+14 there, which
would make the life span of a day 26+24=50 hours. In case the
UT+14 people choose to introduce DST, we even get at 51 hours
for part of the year.
With kind regards,
Frans W. Maes
Peize, The Netherlands
53.1 N, 6.5 E
Art All,
The matter of the international date line has been settled by now.
Confusion remains about the cave-dwelling lover.
SÈrgio Garcia Doret [EMAIL PROTECTED] writes:
1 - Assume the hours equals exactly 1/24th of the earth revolution time
and suppose a disguster lover choose to
Hi fellow dialists,
Browsing the web for analemmatic sundials, I hit upon three such dials which
call themselves The Sundial of Human Involvement:
At the Carter Observatory, near Wellington, New Zealand:
colorparam,8000,/paramhttp://members.tripod.com/~apd2/carter.htm
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