or vines so Amyntas and Phyllis were enjoying
their delightments under the elm tree which could be called a bower. But the
German translation, appropriately, kept the sense of “chambers.”
So, to summarize: the original English does not quite make sense to a modern
reader unless he just gu
its polar axis.
Jack Aubert
From: sundial On Behalf Of Steve Lelievre
Sent: Monday, April 3, 2023 7:47 PM
To: Rod Wall ; kool...@dickkoolish.com
Cc: 'Sundial sundiallist'
Subject: Re: Adjusting dial to new location
Hi, Roderick,
My home internet connection is
Diese Nachricht wurde eingewickelt um DMARC-kompatibel zu sein. Die
eigentliche Nachricht steht dadurch in einem Anhang.
This message was wrapped to be DMARC compliant. The actual message
text is therefore in an attachment.--- Begin Message ---
I thought about this briefly. I had always thought t
Istanbul. There are some beautiful videos of Dakar,
Istanbul and several mosques.
Jack Aubert
--- End Message ---
---
https://lists.uni-koeln.de/mailman/listinfo/sundial
can tell what today’s day and month would
have been called.
I wonder if anybody can figure out a way to juxtapose a pre-Julian Roman
calendar onto a modern calendar. I think it would have to be arbitrarily reset
somehow rather than fast forwarded.
Jack Aubert
From: sundial
Not exactly. In Paris, lunch time is at 1:00. That is very close to solar
noon. Paris is just a few degrees east of London.
Maybe lunch time is at solar transit.
From: sundial On Behalf Of Kurt Niel
Sent: Wednesday, March 16, 2022 7:18 AM
To: Steve Lelievre
Cc: Sundial List
Subject:
I tired searching for “pommeau de ciel” and “pommeau des cieux”, which not
surprisingly I did not recognize in either English or French. Pommel is
Pommeau in French. I mostly got hits for shower heads and gear shift knobs…
but did find a reference to the original French on Google Books:
ht
. It is hard enough for me
visualize the projection of a conic section onto a horizontal plane and relate
it to the sky and the sun let alone explain it to a kid. It’s somewhere
between magic and a trick pool shot.
Jack Aubert
From: sundial On Behalf Of R. Hooijenga
Sent
ng Xian it would be worthwhile
to take some photos that could be used to count the marks more clearly and
figure out their spacing. With accurate measurements, it may be possible to
figure out. Or maybe there is somebody in China who has already figured it
out.
Jack Aubert
From: s
f the programs may be handling the longitude offset, and
possibly the equation of time differently.
Does this make sense?
Jack Aubert
From: sundial On Behalf Of Ross Sinclair
Caldwell
Sent: Monday, June 29, 2020 2:06 PM
To: Michael Ossipoff
Cc: sundial list sundials
Subjec
mechanical aspects of this project than
the actual design of the dial. Has John Carmichael been able to comment? He
is the stained glass expert.
Jack Aubert
From: sundial On Behalf Of Michael Ossipoff
Sent: Wednesday, April 22, 2020 7:19 PM
To: Steve Lelievre
Cc: Alon Gan
I am not the first to observe that you can pick any arbitrary spot and declare
it to be the center of the universe. I frequently argue that there is nothing
wrong with adopting a geocentric view for the purpose of understanding what we
see happen in the sky. It is not actually “wrong”, even in
ong:
I once showed up for an (thankfully unimportant) group meeting an hour
early, a day late but a week early. (Sunday at 2:00 PM for a meeting the
following Saturday at 3:00 PM.) That was before I had a PDA or an Iphone.
Jack Aubert
-Original Message-
From: sundial On Behalf Of Frank King
Corrected HTTP link:
https://www.outsideonline.com/2380751/sunscreen-sun-exposure-skin-cancer-sci
ence?utm_medium=social&utm_source=email&utm_campaign=onsiteshare
Jack Aubert
-Original Message-
From: sundial On Behalf Of Jack Aubert
Sent: Saturday, January 12, 2019 4:15 PM
To
And on a related note, slightly off-topic, here is an article that suggests
the medical advice to avoid the sun may completely wrong:
https://www.outsideonline.com/2380751/sunscreen-sun-exposure-skin-cancer-sci
ence?utm_medium=social&utm_source=email&utm_campaign=onsiteshare
... which reinforces
I had the same reaction. I think the NASA page is simply mistaken.
Either that or the image was edited to make it vertical.
Jack Aubert
From: sundial On Behalf Of Bill Gottesman
Sent: Sunday, September 23, 2018 10:59 AM
To: Robert Terwilliger
Cc: Sundials List
Subject: Re: Equinox
In Paris, and I believe all of France, lunchtime is always at 1:00 PM.
Solar moon (more or less).
Jack
-Original Message-
From: sundial On Behalf Of Frank King
Sent: Friday, August 31, 2018 10:32 AM
To: Steve Lelievre
Cc: Sundial List
Subject: Re: EU backs ending Daylight Saving Time
earth, silly!.
But it is almost impossible to understand the daily motion of the stars, the
sun and the seasons without adopting a geocentric perspective.
Eppur se muove!
Jack Aubert
From: Steve Lelievre
Sent: Thursday, July 19, 2018 11:39 AM
To: sundial@uni
.
Jack
From: Roger
Sent: Tuesday, July 17, 2018 7:32 PM
To: Jack Aubert ; 'Michael Ossipoff'
; 'sundial list'
Subject: RE: Is this sundial business 'genuine', or not?
Hi Jack and Michael,
I don’t agree. The concept is ver
I very much agree with this. In fact, at the risk of sounding stupid, I have
to confess that I don’t have an intuitive grasp of how an analemmatic dial
works. Yes, I have at various times gone through the explanation, but it does
not stick in any way that I can mentally attach to the plane of
Sorry for the non-sundial spam.
This is just a test to see if my mail server, which I run, is DMARC compliant.
It should pass the SPF test but I may have to install DKIM
Jack Aubert
From: sundial On Behalf Of Fred Sawyer
Sent: Tuesday, May 22, 2018 2:51 PM
To: Doug Bateman
Cc
er was also cited in Christopher Daniel's excellent and definitive
monograph on the Equation of Time and invention of the Analemma, published
in the BSS volume 17.
Jack Aubert
-Original Message-
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Steve
Lelievre
Sent: Fr
HI Simon,
I like to use the “time of solar transit” version of the EOT from your
spreadsheet because I can never remember with any confidence if I am correcting
the watch or the dial.
Jack Aubert
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Simon Wheaton
Smith
No, as far as I know, it’s only for Iphone.
From: rodwall1...@gmail.com [mailto:rodwall1...@gmail.com]
Sent: Wednesday, January 18, 2017 12:26 AM
To: Jack Aubert ; 'David Patte ₯'
; sundial@uni-koeln.de
Subject: Re: An interesting piece of timekeeping
Hi Jack,
Is this for
The smartphone app has been written.
Look for Chronometer by Emerald Sequoia. You can easily spend hours exploring
it. It consists of fifteen different virtual watches, each one offering a
different set of temporal and astronomical features.
Jack Aubert
From: sundial [mailto:sundial
I have been photo-etching sundials following Tony's video for several years
and have written up detailed instructions based on my own experience,
including availability of tools and materials.
For anybody who wants to have a go at this here is a link to that paper:
https://dl.dropboxusercontent.c
Roger seems to be the only person in the Sundial community who does not call
them "Bailey Points."I think his Canadian modesty.
Jack
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Helmut
Sonderegger
Sent: Saturday, July 30, 2016 8:39 AM
To: sundial@uni-koeln.de
Subje
He looks like he’s texting something on his Iphone.
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of John Davis
Sent: Friday, May 06, 2016 3:32 AM
To: Dan-George Uza
Cc: sundial@uni-koeln.de
Subject: Re: Sundial in Risen movie
Hi Dan,
Well spotted! However, neither th
erent shapes than
the horizontal plate with inclined gnomon you are used to seeing. In Perth
your gnomon should, indeed, have a 32 degree slope and be parallel to the
earth's axis. But the hour line numbers are reversed from what they are in
the northern hemisphere.
J
Yes, the server died, but has been resurrected with some replacement hardware.
It is back up and running now.
Jack Aubert
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Bill Gottesman
Sent: Saturday, October 31, 2015 8:07 PM
To: Sundials List
Subject: NASS site down
interesting to watch the reactions. Some people immediately knew why; others
seemed perplexed.
Jack Aubert
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Michael
Ossipoff
Sent: Sunday, October 04, 2015 7:42 AM
To: Willy Leenders; sundial list
Subject: Re: Romanian
It is a very attractive dial and a nice way to decorate one’s roof. But you
may want to photoshop out what appears to be an unmetered electrical tap
powering the bar-restaurant across the street.
Jack Aubert.
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Dan
Why not? Richard Feynman argued that that a quantum mechanical particle can
take an infinite number of paths between two points to explain the wave
function. Or something like that. I dont actually understand that stuff
myself. Maybe the direction to Mecca should be a wave function.
https
I have done something similar with etched-engraved dials. I got the powder
from Harbor Freight. I have several colors but black really to be the most
appropriate. The cost for a lifetime supply jar is only a few dollars.
I use a razor blade to squeegee it into the etched areas and then
Tony Moss did a presentation somewhere a few years ago on anodizing
aluminum. I have a vague memory of his doing something at one of the NASS
conferences, but it could have been the BSS bulletin or an email to this
list. I think he used some kind of water soluble coloring that was absorbed
by op
spherical directions, not straight line on a
plane surface.
Jack Aubert
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Brent
Sent: Tuesday, September 15, 2015 9:47 PM
To: sundial
Subject: due east photos
I am having an off list discussion with Dave but I have a
Amphiareion is, of
course, equatorial and not horizontal as I originally said.
Jack Aubert
From: Roger Bailey [mailto:rtbai...@telus.net]
Sent: Monday, August 03, 2015 8:13 PM
To: Jack Aubert; sundial@uni-koeln.de; Sasch Stephens
Subject: Re: Temporal Hours
used temporal
hours.
Jack Aubert
From: schalda...@aol.com [mailto:schalda...@aol.com]
Sent: Thursday, July 30, 2015 1:55 AM
To: rtbai...@telus.net; email9648...@gmail.com; sundial@uni-koeln.de
Subject: Re: Temporal Hours
Greek and Roman dials were not horizontal or
, which is probably stronger than silicone caulk, try to get a
flexible epoxy.
Jack Aubert
From: KDConod [mailto:kdco...@yahoo.com]
Sent: Thursday, June 25, 2015 12:09 PM
To: sundial@uni-koeln.de
Subject: Sundial mounting question
Hello Sundialers --
I used to lurk on this
Hi Jackie,
I have done several dials like this cut from a large plastic board I
purchased several years ago. The board is some kind of sign-board ¾
thick, with high density foam core and smooth plastic on each side. I
cannot locate either the name of this material or where I got it from, bu
nough modern technology, a sundial really
stops being a sundial.
Jack Aubert
-Original Message-
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Robert
Kellogg
Sent: Friday, April 24, 2015 12:01 PM
To: sundial@uni-koeln.de
Subject: A "Digital" Sundial on Instructabl
interested in the slope of the curve around the equinoxes at northern
latitudes, when the transition from long summer days to short winter days is
quite abrupt.
Jack Aubert
-Original Message-
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of John Goodman
Sent: Sunday
Just learn Italian! It takes a little effort but you can do it.
Its an excellent language and is useful for a number of things besides
gnomonics, including visiting Italy and listening to opera.
Jack Aubert
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Reinhold
I'm sure there are more than two of us and my Latin is pretty minimal.
The leap year date is a double-six (in French it is called "bissextile").
It is a second sixth date. The "sixth" means six days before the March
calends (beginning of March). Therefore there is a second February 24 so to
av
inventory of essential and optional tools. If
anybody on this list wants to attempt photo-etching, I will be glad to share
my how-to document, which is meant to be used a supplement to Tony's video.
Jack Aubert
-Original Message-
From: sundial [mailto:sundial-boun...@uni-koeln.d
Hi Dan,
Beautiful project. I’m also in for a minor contribution.
I like paypal mainly because it spares me from having to remember or copy a 16
digit credit card number.
Jack
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Roger Bailey
Sent: Friday, August 15, 2
and spray paint.
With spray paint you have to be careful to make sure that successive layers are
compatible.
Jack Aubert
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of cerculdestele .
Sent: Tuesday, August 12, 2014 10:16 AM
To: sundial@uni-koeln.de
Subject: Acrylic
Also note that the center of the body runs down more or less through the heels.
So the heals (or possibly the insteps) rather than the toes should be lined
on the date.
Any more precision and we will need 5 minute lines!
Jack
From: sundial [mailto:sundial-boun...@uni-koeln.de] On
/brooklyn2.jpg
http://chezaubert.net/froggy2.jpg
The sun tracks are really more of a secondary decoration than the point of
the photos.
Jack Aubert
-Original Message-
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of rmallett
Sent: Monday, May 05, 2014 2:42 PM
To: Bill
The second word along the vertical line is almost surely, Zawal, which is
the instant when the sun has passed mid-day, and the Zuhr may begin.I
cannot make out the first word.
Jack
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Kevin
Karney
Sent: Friday, Novembe
y but continues until the beginning of
Asr so this line would be the end of Zuhr making the last line the end of
Asr, or second Asr.
The script along the vertical line is completely beyond me but I am pretty
sure there is no Dhur in there.
Jack Aubert
From: sundial [mailto:sundial
speculation that, absent
standardized units of measure, Hellenic sundial calculation and construction
techniques were probably specified by using triangles and ratios.
Jack Aubert
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of
nicolasever...@libero.it
Sent
.
Jack Aubert
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Fred Sawyer
Sent: Friday, September 20, 2013 12:19 PM
To: Sundial List
Cc: Bob Kellogg
Subject: News article
Congratulations to John Carmichael on being featured in an article in Inside
Tucson Business.
http
e intervention of a mechanical clock.
The upper and lower limbs of the analemma do correspond to the two
solstices, but the crossover point when clock time deviates from solar time
is not related to the equinoxes. This appears to have been a plausible (but
wrong) guess by somebody.
Just don't quit your day job quite yet.
Jack Aubert
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Donald
Christensen
Sent: Thursday, July 25, 2013 7:08 PM
To: sundial@uni-koeln.de
Subject: Sundials in schools
My sundials haven't sold as well as I hoped. In
You are right, Mike: Here is a photo of the dial from the report on our
Vancouver conference.
I don’t recall any write-up or presentation, though.
Chuck Nafziger’s light concentration sundial, complete with
Braille markings.
From: sundial [mailto:sundial-boun...@u
inted lines run
together. The crescent may just be something that became locally
fashionable in that region of France when the dials were being constructed.
I think that is probably a more plausible explanation than looking too
deeply for religious symbolism.
Jack Aubert
From: su
This is all fascinating stuff and I will either impress or bore people with
my bogus erudition on the subject.
But Is there an easy way to distinguish lime mortar from Portland cement
mortar, like with one's thumbnail? In America, the oldest brick buildings
on the East Coast are from the mid
I would like to subscribe. Will the reborn review only be available on-line
for foreign subscribers? If so, we would need an e-mail notification for new
issues.
Jack Aubert
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of
sun.di...@libero.it
Sent: Sunday, April 21
But why his 306th birthday? What is the significance of 306? Am I missing
something obvious?
Jack
-Original Message-
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Frank King
Sent: Monday, April 15, 2013 4:30 AM
To: sundial@uni-koeln.de
Subject: Today's Google Banner
The city-direction labels are a nice touch: an old tradition that seems to
have fallen into disuse. I hope you can tell us how the concrete (?) bowl
was constructed.
Jack
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Bill
Gottesman
Sent: Sunday, April 07, 2013 3:40
Hey John, post more videos!
This stuff is unbelievable.
True that it is off topic, but I think the sundial list can indulge you (and
the rest of us) a little bit more.
Jack
-Original Message-
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of John
Carmichael
Sent: Mo
the
composer would have to be Philip Glass
Jack Aubert
-Original Message-
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Martina
Addiscott
Sent: Friday, September 14, 2012 6:37 AM
To: sundial@uni-koeln.de
Subject: Sundials in playgrounds - at last, "the tide is tu
Not in the NASS registry! Does anybody live in South Carolina?
From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Fred Sawyer
Sent: Tuesday, August 28, 2012 3:23 PM
To: Tony Moss
Cc: Sundial List
Subject: Re: IMAGES APLENTY
Tony,
There is a large version of that Manship gnom
It looks like the DNS domain lindisun.demon.co.uk has lapsed.
> Does Tony Moss have a new email address? The t...@lindisun.demon.co.uk
> address is now reported as Unrouteable.
>
> Larry McDavid
> Sundial Registrar
> North American Sundial Society
>
> -
We had one like that when I was living in Morocco. We had driven from Rabat
to Casablanca to see it, and were sitting on a terrace drinking beer when it
happened.
I call them nebular eclipses.
Jack
-Original Message-
From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koe
these things. What is really interesting about
this phenomenon is how much the rate of change is affected by latitude.
Above the arctic circle, I guess the curve becomes almost discontinuous when
you go from a 24 hour day to a 24 hour night.
Jack Aubert
Falls Church Virginia
From
Children learn at a fairly young age - at least I did -- that the earth and
planets revolve around the sun and we learn to take a God's eye view of the
solar system. We see this depicted in hundreds of pictures.
Unfortunately, this knowledge, while true, is quite removed from our
experience of su
Eppur se muove!
:-)
Jack Aubert
-Original Message-
From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On
Behalf Of Bill O'Neill
Sent: Tuesday, December 13, 2011 7:03 AM
To: sundial@uni-koeln.de
Subject: Re: sundial Digest, Vol 72, Issue 11
Hi All:
Why do p
John,
I call that a nebular eclipse, and they are even worse when they are solar!
I sat outside and watched a nebular eclipse of the sun in Morocco in 1994.
It was quite a disappointment.
Jack
From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On
Behalf Of John
Gianni,
How can I buy a copy? I would like one. Can you take Pay Pal?
Jack
From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On
Behalf Of Gianni Ferrari
Sent: Wednesday, December 07, 2011 2:06 PM
To: LISTA INGLESE
Subject: THE ANCIENT ISLAMIC SUNDIALS - A new
the use of letter-number notation in ancient
Arabic – similar to Greek notation – and something that will send me on a
little research excursion to learn when the decimal place notation and the
original “Arabic numerals” arrived in Arabic.
Jack Aubert
From: sundial-boun...@uni
I have not been able to figure out a plausible way to contort my watch arm
so that 12:00 noon faces my body. You lost me at step 1.
Jack Aubert
-Original Message-
From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On
Behalf Of Will Vaughan
Sent: Tuesday, October
Value, schmalue.
But it appears to be an interesting object, particularly if it really is an
accurate replica of something from the 17th century. Are there more photos
of it and an explanation of how it works? At first glance it looks like a
skaphe dial made to be "transparent" by use of a
Flamsteed (1692), who clearly set out
the two principal causes.
Jack
From: R Wall [mailto:maill...@virginbroadband.com.au]
Sent: Wednesday, June 22, 2011 7:46 PM
To: Jack Aubert; 'Robert Terwilliger'; clc...@mx.nthu.edu.tw;
sundial@uni-koeln.de
Subject: Re: EoT diagram
Hi Jac
By the late 17th century, as clocks became more accurate, clockmakers struggled
with the fact that they did not seem to tell true (solar) time. The Mercure
de France in 1738 reported that “Many clockmakers find themselves exposed to
criticisms of their methods by those who claim that their clo
as the Kindle uses for it to be visible in sunlight. It would be way cool
and I would love to have one but it would not really be a sundial. In fact,
you could run it off a lithium battery instead of sunlight and it would even
work work at night.
Jack Aubert
-Original Message
Yes, it is clearly meant for a polar axis gnomon. The hour lines are
symmetrical with 6 and 6 crossing at the root of the gnomon so it is meant
to be directly south-facing. However the hour angle lines do not appear to
be accurate for any latitude. Iif you measure the hour angles and try to
ca
I am reposting this message that for some reason exceeded the size limit:
Yes, it is clearly meant for a polar axis gnomon. The hour lines are
symmetrical with 6 and 6 crossing at the root of the gnomon so it is meant
to be directly south-facing. However the hour angle lines do not appea
My reaction was:
A pub with a sundial and something called a pothole complete with winch to
lower you into it! Is a pothole full of ale? Wow. The UK does it again!
Jack
From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On
Behalf Of Richard Mallett
Sent
I agree with what I understood to have been the point of Claude’s initial
comment: Analemmatic sundials are not very good for pedagogical purposes. It
is true that they are often pitched to children and put in parks or
playgrounds. A child can be briefly diverted by the fact that if he stands
This has all been very instructive. I am not a complete beginner, but have
to confess that I was under the impression that rotating the dial plate with
respect to the fixed gnomon was sufficient. Somebody once told me I could
do this and I never really thought about it. If you actually think abo
Beautiful!
Particularly the traditional fly.
From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On
Behalf Of John Carmichael
Sent: Saturday, January 29, 2011 2:50 PM
To: sund...@rrz.uni-koeln.de
Cc: Glass List
Subject: New Stained Glass Sundial- Finished!
Hello Fr
Very nice! Congratulations. A clean, uncluttered elegant look.
I see that the list of topics in the left-hand column is alphabetized. You
might think about re-ordering them by some other criterion like
general-to-specific. This way, you could put some things like Tony's "how
sundials work" an
analemmatic dials engraved in
sandstone suitable for use in a private setting where the gnomon can be put
away and/or replaced.
Are you engraving in metal? Stone?
Jack Aubert
From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On
Behalf Of Douglas Bateman
I have been thinking the same thing.
That slate dial is strikingly beautiful and I like the idea of using a
completely different type of hour that does have to offer any excuses for
not being the same as what is on one's watch. Frank King's narrative write
up answered one of my questions. I had
How about the misconception that it saves energy. I have never seen any
serious scientific study that supports that theory which is implausible
given energy use patterns in the 21st century.
Jack
From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On
Behalf Of John
Such a shame that we cannot have sundials inside.
What we need is for somebody to develop a motor-driven, geared apparatus
that will move an electric through a path that picks up all the relevant
celestial motions.
Jack
-Original Message-
From: sundial-boun...@uni-koeln.de [mailto:s
ronomy and math
without the emperical method using a nodus, the sun and a clock?
John C.
-Original Message-
From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On
Behalf Of Tony Moss
Sent: Saturday, November 14, 2009 4:33 PM
To: Sundial Mailing List
Subject
I recently revised my notes for a sundial talk I was giving which included a
section on the EOT, and its connection with the traditional figure 8
analemma. I wanted to explain its origin, or at least be able to answer
the question if asked, but have not been able to find any believable
reference
Hi John,
The site looks really beautiful. Congratulations to you and to your
webmaster.
I wouldn't worry about the Google translator moving the layout. I checked
several of the languages I can read and the translations are all very
sketchy anyway: You can understand the meaning
e no clue or are
dealing with a language where you have zero knowledge. But so far, the only
way to get a "real" translation is to run it through a human brain. Machine
translation may eventually be a reality, but not until they perfect
artificial intelligence.
Learn more
First of all, it is not very civil to start up a political argument on a
list like this.
Second, the sentiment you are reacting to is simply a "tag-line" presumably
attached to all messages sent by Yan Seiner. Reacting to it is like picking
a fight with somebody who pulls into a parking lot becau
David Shayt's obituary ran today in the Washington Post:
http://www.washingtonpost.com/wp-dyn/content/article/2008/11/11/AR200802
483.html?sub=AR
Jack
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Fred Sawyer
Sent: Wednesday, November 12, 2008 9:5
Missouri.
Jack Aubert.
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Roger Bailey
Sent: Wednesday, August 13, 2008 5:47 PM
To: Sundial Mailing List
Subject: Missouri Ottoman Sundial
The Sundial Tour for the NASS conference in St Louis Missouri visited the
Missouri
Thank you all for the answer(s) to this little problem and for the
bread-crumb trail to try to retrace the derivation.
My original question was sparked by wondering about the maximum deviation
from east-west at the solstice(s) so I could display my erudition and bore
people with comments like:
I have been half-heartedly attempting -- with my shaky grasp of
trigonometry -- to figure out where the sun rises and sets at the
Solstices. One should, I think, be able to read this directly off the face
of a sundial, given the time of sunrise/sunset on the solstice.
I found a web site with
There are four or five programs each with its own strengths. Personally, I
found François Blateyron's Shadows program to be very useful because he has
an option to print out Cartesian coordinates of the lines in tabular
form. Rather than using actual angle values, which are somewhat difficult
My first thought was that it was a trompe l'oeil, but I examined the
shadows and they seem to be cast exactly as they would at the time
indicated by the gnomon. On looking again, however, it does seem that some
of the same imperfections in the background continue on through to the dial
face.
Brad,
The domain (and web site) is owned by David Bell.
Jack
At 03:00 PM 2/6/2007, you wrote:
Content-class: urn:content-classes:message
Content-Type: multipart/alternative;
boundary="_=_NextPart_001_01C74A29.6E83B240"
Bob:
it turns out the programs are still on the site and that
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