unless
they are on the date of a solstice. Tubes in a dial or in a structure
would
light up for a certain time when the sun's declination has a certain
value.
In order for this to be only on one day the tube would have to be quite
narrow
if close to a solstice (declination not changing
marvelous resources on the site of Helmer Aslaksen,
www.math.nus.edu.sg/aslaksen/teaching/heavenly.html
This is for his course, Heavenly Mathematics: Cultural Astronomy!
The number of topics of interest to this mailing list is enormous.
Look at the Astronomical Instruments. Not only sundials
[EMAIL PROTECTED] wrote:
I tried to log on to the site quoted and get an error
message. Does anyone
know if there is a problem with it?
Terry
Try these Link http://www.webattack.com/get/httrack.html
if not work I can send the program via e-mail to you (3315KB).
Have you a fast connection?
Perhaps the classic "anniversary" dial is the vertical decliner by Christopher Daniel at Chatham, Kent. It is known as the Nelson dial and it has a small circular spot in the dialface in the form of the Union Flag. This commemorates not just the date, but also the time when Admiral Nelson was
I'm looking for examples of dials that will illuminate a particular spot
on the dial only on the date (and time of day, preferably) to be
commemorated...
At the 2003 NASS Conference in Banff, Helm Roberts described his work as
architect of the Kentucky Vietnam Veteran's Memorial. Helm
Hello John,
I'm going to experiment with a solution Edley suggested using a downloaded
free program.
Ok. That's probably more convenient. And, as I know, it should work :))
The only problem with using PDFs instead is that I have to make a separate
PDFs of each page on the website (must set
While on a recent holiday in southern Florida, my wife and I visited the
Salvador Dalí Museum in St. Petersburg http://www.salvadordalimuseum.org/.
Currently running is the exhibition Dalí Centennial: An American Collection
which celebrates the 100th anniversary of the birth of Dalí. One of the
Reply to : Terry Dixon
As I said there are many reasons for wanting to capture/archive web
sites and by blocking the process we may be losing valuable material for
future generations, imagine if all the books from previous generations had
bee lost by not putting them into libraries, that is
Reply to : Bill Thayer
As for http://www.archive.org/ that *is* piracy. It is illegal to
copy other people's work if it's still under copyright. If you wrote a
book on dials in 1993, for example, it is illegal (and unethical) for me to
make it available to the entire Internet just because
on the dial only on the date (and time of day, preferably) to be
commemorated. I recall running across links to tube-based dials in the
past, but apparently didn't file them away.
Can anyone point me to such dials? I want to show examples to a group
of which I am a member. If they are
On the sundial website of Frans Maes
http://www.biol.rug.nl/maes/zonnewijzers/welcome-e.htm
you can see the equatorial sundial of Sint-Martens-Voeren in Flanders,
Belgium.
The shadow of a little ball in the slit-shaped pole-style hits the center
line of the time scale on July 11, the holiday of
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