John Jensen on wed 15 may 96
I started a little thread last month about clay for the garden and one subject
which came up was Sundials. I finally got around to the library to look up a
bit of information on how to lay them out. I only found one book, _Anno's
SUNDIAL_ BY Mitsumasa Anno and published by Philomel Books, New York. It is a
fine childs book with a lot of pop-up sundials as well as in depth discussion of
the geometry and astronomy of the devices.
The angle of the gnomon (pointer thing) should be the same as the latitude of
the place where the sundial is located. The layout of the hours on the dial is
quite a bit more complicated: A circle is divided in 15 degree increments, then
the rays are projected onto a rectagle of a certain size. It's more than I can
explain without picture...
John Jensen, 76053.1452@compuserve.com...In Annapolis
ELCAB@delphi.com on wed 15 may 96
I used to have the layout of a sundial for our hemispdere..if
someone needs it, let me know and I'll see if my superdooper
filing systemm(ten drawers filled with stuff!) still works..and
if I can remember what Im looking for when Im half way
thru...Elca Branman elcab@delphi.com
Duane Kimball on thu 20 jun 96
a while back someone asked about sundials. today the new dover pubs.
catalogue arrived offering SUNDIALS: HISTORY, THEORY AND PRACTICE, by Rene
Rohr for $11.95. the address is: dover pubs, 31 e. 2nd st., mineola, ny
11501. you may want to get the catalog as they charge $4. for shipping
regardless of the size of your order.
Lynne Antone on tue 20 may 97
I would like to attempt to make a sundial for my garden. Does anyone have
plans for making one or know where I can find plans?
Please respond personally or cc me if you send a response to the group. I am
one of the poor unfortunates on aol who has not received mail since May 12. I
did just go through the "newsgroups" option and read mail there, but not
being familiar with that format, I'd rather not take the chance of loosing
any responses.
Thanks,
Lynne Antone
pranton@aol.com
Andrew & Lucille Lubow on wed 21 may 97
Dover Publications had published a book by Albert E Waugh called Sundials
Their Theory and Construction (Isbn. 0-486-22947-5). I couldn't tell you if
it's still in print though.
----------
From: Ceramic Arts Discussion List on behalf of Lynne Antone
Sent: Tuesday, May 20, 1997 11:57 AM
To: Multiple recipients of list CLAYART
Subject: Sundials
----------------------------Original message----------------------------
I would like to attempt to make a sundial for my garden. Does anyone have
plans for making one or know where I can find plans?
Please respond personally or cc me if you send a response to the group. I am
one of the poor unfortunates on aol who has not received mail since May 12. I
did just go through the "newsgroups" option and read mail there, but not
being familiar with that format, I'd rather not take the chance of loosing
any responses.
Thanks,
Lynne Antone
pranton@aol.com
Larry Phillips on wed 21 may 97
Lynne Antone wrote:
> I would like to attempt to make a sundial for my garden.
> Does anyone have plans for making one or know where I can
> find plans?
I found a book in my local library that detailed construction of
a number of different types of sundials, and really, there are
only a few things that you need to know in order to build one.
The book only served to give some goods ideas on the esthetics
of the various designes, rather than on the technical details.
The first thing you need to do is to determine the true north
direction from and the lattitude of your location. The easiest
way to do both is to locate the North Star. Your gnomon (the
angled piece that casts the shadow) should point directly at the
North Star, and the base that the numbers are on, should be
level.
Try this as an experiment. Set up a sundial made from wood or
cardboard, using a piece of clay to hold a stick to use as a
gnomon. Point the gnomon at the North Star. The easiest way
to do this is to sight the star through a thin, straight piece
of some sort of tubing, and to line up the gnomon to be parallel
to the tubing.
At some arbitrary time, on the hour, make a mark on the cardboard
or wood where the gnomon's shadow falls. Noon is a good time to start
this, for reasons which will become obvious. Every hour, on the
hour thereafter, make another mark. Label each mark with the time.
If you do this on the longest day of the year (June 21 or so),
you will have all the possible marks made for the afternoon. Now
you can transfer those marks to the morning side of the dial, since
the dial is symmetrical (thus, there is no use marking it in the
morning, unless you happen to like getting up that early).
Note that the above setting will give you a dial that is accurate
to the siderial time at your location. In actual practice, you will
probably want to position the dial to local time. The way to do
this (after your dial is made), is to wait until noon, and trun the
dial so the gnomon casts the shadow on the noon mark, which may put
it off the north star alignment.
Now you've made me want to build one. :-)
Good luck.
-larry
Mark L. Hessenflow on thu 22 may 97
Lynne,
>I would like to attempt to make a sundial for my garden. Does anyone have
>plans for making one or know where I can find plans?
There is a web page at which
has instructions. Note that in the southern hemisphere sundials go
counterclockwise, so you will have to reverse the face if you are in the
northern hemisphere.
-Mark, in San Jose
Paul Monaghan on thu 22 may 97
Andrew & Lucille Lubow wrote:
>
> ----------------------------Original message----------------------------
> Dover Publications had published a book by Albert E Waugh called Sundials
> Their Theory and Construction (Isbn. 0-486-22947-5). I couldn't tell you if
> it's still in print though.
>
> ----------
> From: Ceramic Arts Discussion List on behalf of Lynne Antone
> Sent: Tuesday, May 20, 1997 11:57 AM
> To: Multiple recipients of list CLAYART
> Subject: Sundials
>
> ----------------------------Original message----------------------------
> I would like to attempt to make a sundial for my garden. Does anyone have
> plans for making one or know where I can find plans?
>
> Please respond personally or cc me if you send a response to the group. I am
> one of the poor unfortunates on aol who has not received mail since May 12. I
> did just go through the "newsgroups" option and read mail there, but not
> being familiar with that format, I'd rather not take the chance of loosing
> any responses.
>
> Thanks,
> Lynne Antone
> pranton@aol.com
Yes it's still in print and a great book. Covers not only thory but
gives details for constructing many different kinds of dials. You can
also check the Mother Earth News archives. They featured pocket dials
along with others many years ago.
Paul
--
Paul J. Monaghan email: paul@web2u.com
WEB2U Productions --- http://www.web2u.com
The "COOLEST" Site on the WEB
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