RE: Russell Porter Sundial?

I have never seen this form associated with Russell Porter, but will check further.However, I think we need more information to tell the conventional type. For example, is the long rod the gnomon, and is it to scale with the arc? What do the hour lines look like? Does the sundial include

RE: Russell Porter Sundial?

] Sent: Thursday, May 20, 2010 4:04 PM To: Schechner, Sara Cc: sundial@uni-koeln.de Subject: Re: Russell Porter Sundial? Sara, That looks similar to a cylindrical equatorial dial done by Porter while at CalTech. The dial incorporated EoT correction and was, apparently, stolen (URL below). http

RE: Russell Porter Sundial?

Nicola, Great explanation of terminology. I completely agree and applaud your use of the historical literature for guidance. All best, Sara Sara J. Schechner, Ph.D. David P. Wheatland Curator of the Collection of Historical Scientific Instruments Department of the History of Science,

email address wanted

I would like to contact Klaus Eichholz by email. If he is a reader of this list, or if anyone has his current email address, please contact me off-list. Thank you. Sara Sara J. Schechner, Ph.D. David P. Wheatland Curator of the Collection of Historical Scientific Instruments Department of the

RE: Beer sundial

Dear Claude, I also collect sundials used in advertisements and have a number used in beer and whisky ads. Is the attached gif the San Miguel ad you mention or is it the placemat you created? The image was too pixilated to tellbut it's great. Sara Sara J. Schechner, Ph.D. David P.

SUNDIAL life before AND WITH clocks

I am addressing many of these questions in an interpretive catalogue of several hundred sundials and timefinding instruments at the Adler Planetarium and Astronomy Museum in Chicago (to be published in two volumes), and in a separate book, Sundials, Science, and Social Change (appearing later).

RE: A 14th century sundial question from France.

I had exactly the same thought as John-that this was a table of shadow lengths in the form that Bede gives in the 7th century. Sara Sara J. Schechner, Ph.D. David P. Wheatland Curator of the Collection of Historical Scientific Instruments Department of the History of Science, Harvard

RE: Where are the women?

Hey, hey, I just wrote in to the list a day ago. :)But I'll grant you that some of us are rather quiet online because we are too busy with other things-like cataloguing sundials in museums. Sara (a woman last I checked) Sara J. Schechner, Ph.D. David P. Wheatland Curator of the Collection

D. B. Sheahan sundials on campus

I am doing some research on D. B. Sheahan, an Irish-born sculptor who lived and worked in New York City in the second half of the 19th century. His best known sculpture is a bronze bust of Thomas More in New York's Central Park. According to some sources, Sheahan made some monumental and

RE: Sundials in museums (world-wide)

I am currently completing a catalogue of the sundials at the Adler Planetarium in Chicago, having at an earlier stage in my career been the chief curator of the instrument collection there. I am now the curator of Harvard's Collection of Historical Scientific Instruments, which has what we

RE: Old sundial pictures

Did I miss part of this thread? I am curious to see the images referred to. Are they posted on a website? Sara 42°21'N 71° 14'W -Original Message- From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Donald Christensen Sent: Wednesday, June 29,

FW: source of NAWCC old timer logo

Tony, You were wondering about the source of the print of an Victorian gentleman checking his pocket watch against a sundial in a garden. The image is from the title page of * Title: Time and Time-Tellers * Author: James W. Benson * Publisher: Robert Hardwicke Keywords: time anthology

RE: Passion

It is a merkhet and I have used one. It is for use at night with stars crossing rhe meridian. Sara From: sundial-boun...@uni-koeln.de [sundial-boun...@uni-koeln.de] On Behalf Of Brent [bren...@verizon.net] Sent: Saturday, July 30, 2011 5:30 PM To:

Re: Time at Sea

Time at sea was found astronomically by using a quadrant, nocturnal, or sundial such as a universal ring dial. Sara P.S. Thanks for your praise of my article. Sent from my iPhone On Aug 15, 2011, at 9:23 AM, karon ka...@karonadams.commailto:ka...@karonadams.com wrote: For a lot of years,

RE: Sara Schechner

The article mentioned is: Sara Schechner, The material culture of astronomy in daily life: Sundials, science, and social change, Journal for the History of Astronomy 32 (2001): 189-222. It can be found online here: http://adsabs.harvard.edu/full/2001JHA32..189S And here:

RE: Sundials in cinema

Dear Darek, The Sundial Pictures animation is quite dramatic. Wow!But the Melancholia screen shot is weirdly (or purposefully) constructed so that each shrub has TWO shadows at the same moment! Sara 42°36'N 71° 22'W West Newton, MA 02465

RE: 2 questions: declination animation

Hi Darek, IF you have a straight-on photograph, you can measure the angles between the hour lines and the 12 o'clock line. You can then reverse engineer the dial to figure out the latitude and declination. You will probably find some scatter of values, but this is normal. If the gnomon is

RE: Sundial reference in Super Bowl commercial

I recognized the king as Elton John; the singer, Melanie Amaro, I'm told is a winner of X-Factor, a reality singing show. But I also do not know who the dial-chested fellow was. Pray tell. So much for my grasp of modern pop culture! Ask me about sundials and pop culture a few centuries

RE: Sundial reference in Super Bowl commercial

Oh, now that I have checked for images of Flavor Flav, I see his propensity to wear large clocks and that crazy horned helmet. It is pretty funny. --S From: sundial-boun...@uni-koeln.de [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Maureen Salmi Sent: Monday, February 06, 2012 2:31 PM

RE: Equinoctial vs. Equatorial

I classify sundials into three principal categories-those that find time from the sun's hour angle; those that use the sun's azimuth; and those that use the sun's altitude-plus various combinations of two out of the three. In the first category, we generally subdivide dials according to the

medieval astronomy (was: Georg of Peuerbach)

Dear Roger, I have not been following this thread on Peuerbach closely, but feel it necessary to challenge two statements: 1) the description of Medieval astronomy and science as impoverished and dark. While this was a popular view until the mid-twentieth century, this is a fallacy and

SCIENTIFIC INSTRUMENTS COMISSION SYMPOSIUM - OCTOBER 2012 - RIO DE JANEIRO

Ever wonder how sundials work south of the Equator? Join us in Rio and find out! Attached is a conference announcement and second call for papers. Sara Schechner, SIC Secretary Dear Colleagues, The Museum of Astronomy and Related Sciences of the Ministry of Science, Technology and Innovation

Johann Engelbrecht

Does anyone have a copy of the following article or booklet? Fischer, Karl Adolf Franz. 1963. Die Sonnenuhrmacher Engelbrecht in Beraun ; and Eine Sonnenuhr von Johann Engelbrecht. NUZ. Neue Uhrmacher-Zeitung Alte Uhren. 14-17. If so, could you scan it for me? Thanks! Sara Sara J. Schechner,

makers Tanget and D. Praetorius

I am cataloguing two inclining sundials and would be grateful for more information about the makers: The first is in the English style but signed in Cyrillic. I recall seeing lots of this sort of sundial in St. Petersburg, and some were made by English makers who had relocated to Russia to

Call for Papers: SIC Symposium 2013--Manchester

MEETING ANNOUNCEMENT CALL FOR PAPERS Next year the Scientific Instrument Commission will hold its annual Symposium in Manchester as part of the 24th International Congress of History of Science, Technology, and Medicine (http://ichstm2013.com/). The full Congress runs from Monday July 22 to

Re: new app Sol Et Umbra for Android

This is great! I am in Rio de janeiro and just downloaded it. Enjoying seeing the sun in the northern sky and sundials here. Sara -22.9 lat -43.2 long Sent from my iPhone On Oct 10, 2012, at 12:09 PM, rPauli rpa...@speakeasy.orgmailto:rpa...@speakeasy.org wrote: Here it is:

Second Call for Papers: SIC in Manchester, 2013

SECOND CALL FOR PAPERS Scientific Instrument Commission Sessions International Congress of History of Science, Technology, and Medicine Manchester, England July 22-28, 2013 TO SUBMIT A PAPER, please use this special portal for SIC papers: http://ichstm2013.com/abstractsubmission/?sic The

RE: Wrist worn competition for sundials

The transition already happened between stationary dials and clocks and portable watches---these were the numerous portable dials designed to be carried in a pocket or worn on a chain or ribbon. Some were even finger rings. Sara Schechner 42°36'N 71° 22'W West Newton, MA 02465 From:

Rowlandson sketch?

Does anyone know the artist who did the sketch of a foolish servant who digs up a sundial in order to answer his gouty master's inquiry about the time? It looks to me like Thomas Rowlandson (1756-1827), but I have been unable to identify it or a collection that contains it. I have put an

RE: Rowlandson sketch?

Thanks, Douglas and Fred! The Irish footman is referenced on both websites and so I think this must be the same source. I also like the second painting on this theme. Cheers, Sara From: Douglas Vogt [mailto:dbv...@yahoo.com] Sent: Tuesday, November 27, 2012 7:12 PM To: Schechner, Sara

Sundials worthy of a tour in England

Dear Kevin (and other members of the Sundial List), I am leading a Harvard Museums of Science and Culture tour to England at the end of September 2013 on the theme of Time, in conjunction with an exhibition I am curating at Harvard called Time and Time Again: How Science and Culture Shape the

RE: Sundials worthy of a tour in England

Excellent idea! I'll suggest that we head to Durham! Thanks! From: Frank Evans [mailto:frankev...@zooplankton.co.uk] Sent: Wednesday, January 23, 2013 10:26 AM To: Schechner, Sara Subject: Re: Sundials worthy of a tour in England Dear Sara, You are following the usual visitor route in England

digital versions of bedos de celles and pini?

Dear Dialists, I am wondering if anyone knows of good quality / high resolution digital versions of Valentino Pini, Fabrica de gl'horologi solari (1598) and Bedos de Celles, La Gnomonique pratique (1774) or later editions of these. Each has an image I would like to use in an exhibition.

RE: digital versions of bedos de celles and pini?

books. Part of the plate I want can be seen here: http://books.google.ca/books?id=_BY4MAAJpg=PA431#v=onepageqf=false. Thanks for checking. I do appreciate it. Sara From: Roger Bailey [mailto:rtbai...@telus.net] Sent: Monday, February 11, 2013 10:44 PM To: Schechner, Sara; sundial@uni

RE: Sundial At Tower Court, Wellesley College

The dial plate is a reproduction of the early 20th century, and the gnomon a messed up replacement! I have been thinking of writing this up with the Team for the NASS Compendium as a short article on how to approach a dial found in the field. Would that be of interest to others? Cheers,

RE: Sundial At Tower Court, Wellesley College

@uni-koeln.de; Schechner, Sara Subject: RE: Sundial At Tower Court, Wellesley College Hi Sara, Your idea of writing up the Wellesley College dial is a good one - I for one would like to know the full story and read your experiences. The replica dial isn't a bad attempt (other than that awful

RE: Horas benedictinus

Dear Darek, By horas benedictinus, he means the hours according to the Benedictine Rule--better known as the hours of the divine office. These are unequal hours used by the monks for the times of prayer: prime,..., tercesext...nones...etc. The Catholic church used these hours in

new Time exhibition at Harvard

Please forward. Press release with images can be found here: http://www.fas.harvard.edu/~hsdept/docs/Time_and_Time_Again_PR.pdf Explore the concept of time at Harvard's Collection of Historical Scientific Instruments and in unexpected places on campus! It's all part of a new exhibition

RE: Alt Augsburg revisited

These astronomical clocks are part of a tradition of elaborate and complex clocks that showed all sorts of astronomical information. They are largely found in courtly collections put together in the 16th and 17th centuries. The inclusion of sundials on them was common in order to set the time

RE: Egyptian sundials

Traditionally the L-shaped instrument has been called a merkhet. It was used not only as a plumb line and altitude sundial but more importantly for finding time at night. For this purpose, two people were involved. On to hold the merkhet to mark a meridian and another to sight through a

RE: A very fine portable equatorial dial

Dear Bob, Thanks for posting this. I am currently researching sundials made in Europe for American customers. It is an interesting sundial-clearly French, very similar to one signed by Moreau, Paris, in the Adler Planetarium. That example also has Latin American and Caribbean locales.

FW: Analemmatic and Horizontal Sundials of the Bronze Age (Northern Black Sea Coast)

I was just sent this from another list, and thought I would pass it along. I have not yet had time to read it closely, but my first impression is that it is farfetched. I would be interested in hearing what others think. http://arxiv.org/abs/1309.7238 Sara Schechner 42°36'N 71° 22'W West

RE: Analemmatic and Horizontal Sundials of the Bronze Age (NorthernBlack Sea Coast)

Yes, that is the link to the full article from the page I sent earlier. I would like to know what religious or social reasons the users of the alleged sundial had for so precisely wanting the time in a non-urban setting. Sara From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of

RE: Shape of Greek and Roman sundials

Dear Sasson, Your sundial looks pretty, but it does not seem cylindrical to me in the photo. As for your questions concerning the preference of the Greeks and Romans to concave spherical sundials, there are several answers: 1. The bowl mirrored the spherical shape of the heavens, and this

RE: Shape of Greek and Roman sundials

Thanks for the clarification, Mario. I had thought that the seasonal lines had been found but must have been mistaken. Sara 42°36'N 71° 22'W West Newton, MA 02465 From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Mario Arnaldi Sent: Tuesday, October 22, 2013 2:41 PM To:

A special soirée at the Collection of Historical Scientific Instruments

Dear History of Science Community, The Collection of Historical Scientific Instruments (CHSI) at Harvard University would like to invite you to an informal gathering during this year's HSS Annual Meeting, held in Boston. We will open our museum doors on Friday, 22 November 2013 from 7:30pm to

sundial exhibit in Paris

Dear All, The Galerie Delalande will be hosting an exhibition of about 150 remarkable sundials of great beauty and rarity in its Paris showroom from 17 December 2013 to 19 January 2014. A full-color catalogue in French and English is available and can be ordered by following the link

RE: SCOTTISH SUNDIAL

I dislike judging things from photographs rather than in person, but to me this looks like a fake (something pretending to be what it is not) and not a reproduction.The lettering is not convincing-too many styles, ones wrong for the period, the hour numerals reversed from the usual, the use

online manuscript by Mayall and Mayall

Dear All, As those who attended last summer's meeting of the North American Sundial Society know, I have done some research on the Margaret Mayall and R. Newton Mayall, authors of the well-known, Sundials: How To Know, Use, and Make Them, and their connections to sundials presently in

Sundial of the Week tweet

Hi everyone, Many of you know that I have been cataloguing the sundials at Harvard's Collection of Historical Scientific Instruments and the Adler Planetarium. For fun, I will begin tweeting each week about a particularly interesting sundial on which I am working. Those of you in the

Capuchin sundial --earliest name use

Dear All, I am searching for the earliest use of the name, Capuchin dial, to describe a particular form of rectilinear dial. The class of altitude /rectilinear dials also includes the Regiomontanus dial and navicula. The earliest published projection of the Capuchin dial I know is in the

RE: Request for information about a type of altitude dial

There has been some confusion in the discussion so far. Here is my take: The sundial pictured is called a “vertical disk dial.” It is an altitude sundial. The example pictured is similar to one at CHSI (inv. 7270) signed “I W” with a punch mark of a crown and date 1672. It is for latitude

RE: Eternal Sundial

Cool photoshop effect! From: sundial [mailto:sundial-boun...@uni-koeln.de] On Behalf Of Robert Terwilliger Sent: Friday, June 06, 2014 7:21 AM To: sundial@uni-koeln.de Subject: Eternal Sundial Found on Flickr: https://www.flickr.com/photos/davidmontse/3166570780/ Also

RE: unique French diptych dial

Dear Maciek, Thanks for sharing these images and link. What a fabulous diptych! I could not find a maker’s mark on it by inspecting the photos. Do you know if it was stamped or marked in any way, save for the epact date of 1598? Did the auctioneer or anyone else identify the coat of arms?

RE: unique French diptych dial

%20dial.zip Maciek Lose Od: Schechner, Sara sche...@fas.harvard.edu Do: ml...@interia.pl ml...@interia.pl; sundial@uni-koeln.de sundial@uni-koeln.de; Wysłane: 20:42 Niedziela 2014-07-27 Temat: RE: unique French diptych dial Dear Maciek, Thanks for sharing these images and link. What

Tallinn and Tartu, Estonia

Hi all, Next week I will be in Estonia, mostly in Tartu with a day in Tallinn. Does anyone know of interesting sundials to see there? Sara J. Schechner Altazimuth Arts 42°36'N 71° 22'W West Newton, MA 02465 http://www.altazimutharts.com/ Sara J. Schechner, Ph.D. David P. Wheatland Curator

RE: Tallinn and Tartu, Estonia

with you. Best wishes, Sara -Original Message- From: Fabio [mailto:fabio.sav...@nonvedolora.it] Sent: Wednesday, August 20, 2014 3:07 AM To: Schechner, Sara Cc: sundial@uni-koeln.de Subject: R: Tallinn and Tartu, Estonia Dear Sara I'm in Estonia now and I'm travelling trough the country. I

Dr. C. H. Lewis contact

, or if anyone knows of him or his family, please contact me offline. Thanks for your help. Sara Schechner Sara J. Schechner Altazimuth Arts 42°36'N 71° 22'W West Newton, MA 02465 http://www.altazimutharts.com/ Sara J. Schechner, Ph.D. David P. Wheatland Curator of the Collection of Historical

RE: Telling time in outback Queensland in the early 20th century

I very much enjoyed the link, John. Thanks for sharing it. Dear Rod, Aboriginal people in Australia have a very different sense of time than Westerners do. They have a sense of time as near and far. Things near in time are not events that happened close in sequence, but events that are more

RE: A new book (in Italian)

Dear Gianni, Where can the eBook (PDF) be ordered? Best wishes, Sara Sara J. Schechner Altazimuth Arts 42°36'N 71° 22'W West Newton, MA 02465

RE: Gnomonica fundamentalis Johann Penther

Hi, The small bear is Ursa Minor as you suggest. You can see the stars of the constellation on him. Hinc nascitur ordo is a motto literally translated as “Hence the order [of things] is born.” It sometimes appears as Rerum hinc nascitur ordo in devices. It connotes power of a ruler or

FW: CHSI's new publication

I don't know what happened when the message got forwarded! Here are the links in a shorter form: Time and Time Again: How Science and Culture Shape the Past, Present, and Future Sara J. Schechner PDF: https://itunes.apple.com/us/itunes-u/time-and-time-again/id1008852567?mt=10 iBook:

FW: CHSI's new publication

Dear Sundial Enthusiasts, It is with great pleasure that I would like to bring to your attention this brand new publication from the CHSI. Two years ago we showcased an exhibition on time: Time Time Again: How Science and Culture Shape the Past, Present, and Future

RE: CHSI's new publication

Dear John, Just to clarify, the PDF for my book is not read in iTunes, but only downloaded from a link there to your own computer. However, if you prefer not to visit iTunes U to get that link, you can have it directly from this Dropbox:

RE: Horary machine

It looks to me like some kind of decllinatory for marking sundials. Sara J. Schechner, Ph.D. David P. Wheatland Curator of the Collection of Historical Scientific Instruments Lecturer on the History of Science Department of the History of Science, Harvard University Science Center 251c, 1 Oxford

RE: Sundials in museums

Another large collection, but in storage is that of the National Museum of American History, Smithsonian Institution, Washington, DC, USA. As Karlheinz observed, there are fine but small collections in many locations, including archives, such as the David Eugene Smith Collection in the Columbia

CFP / more info on Science of Time conference

CALL FOR PAPERS / Deadline to be extended beyond April 14, 2016. The Harvard-Smithsonian Center for Astrophysics in Cambridge, MA (USA) announces a conference on Time and culture. THE SCIENCE OF TIME: TIME IN ASTRONOMY AND SOCIETY, PAST, PRESENT, AND FUTURE Cambridge, Massachusetts, USA 5-9

Science of Time symposium, June 5-10, 2016

Dear All, The Harvard-Smithsonian Center for Astrophysics is organizing a symposium dedicated to Time and Culture. Talks will be held in the Northwest Lab. A tour will be held in the Harvard Collection of Historical Scientific Instruments' Putnam Gallery. More information can be had here:

RE: [HASTRO-L] Mosaic with sundial on a pillar

These are all really wonderful, Rob. Thanks so much for drawing our attention to them. And thanks to you, Lorenzo, for your remarks. Sara J. Schechner Altazimuth Arts 42°36'N   71° 22'W West Newton, MA 02465 http://www.altazimutharts.com/ Sara J. Schechner, Ph.D. David P. Wheatland Curator

FW: Mosaic with sundial on a pillar

>From the HASTRO-L discussion list, courtesy of Rob van Gent: -Original Message- From: History of Astronomy Discussion Group [mailto:hastr...@listserv.wvu.edu] On Behalf Of Gent, R.H. van (Rob) Sent: Saturday, April 23, 2016 11:15 AM To: hastr...@listserv.wvu.edu Subject: [HASTRO-L]

RE: Genuine or not?

This sundial seems too fanciful to me, with the ship, the Latin motto, and the green foliage (that looks like a dancing cactus to me!) to be an actual copy of an earlier one. It is 20th century, but I don’t know from the photos if it is circa 1920. It could be some sort of souvenir from a

Sixteenth-century wall dials with planetary hours?

Dear All, Attached below is an inquiry from a colleague, Richard Kremer. Please copy him on your replies. Photos of the wall sundial in question can be found here:

RE: Longcase Clock with Equation of TIme

All good clocks were set by sundial or observation of the sun’s transit or stars until the mid-19th century and the use of time signals sent along telegraph lines. Some people then set their personal clocks or watches to these observatory or town clocks (often set up by jewelers or clock

new work on European pocket dials in Colonial America

Dear All, I am excited to report the recent publication of my essay-really a monograph inside a book-concerning sundials used in colonial North and South America: EUROPEAN POCKET SUNDIALS FOR COLONIAL USE IN AMERICAN TERRITORIES by Sara J. Schechner, in How Scientific Instruments Have Changed

RE: Longcase Clock with Equation of TIme

Let us not forget the famous long-case clock by Thomas Tompion in 1709 for the Pump Room in Bath, England. It is an “equation clock” showing the difference between solar and mean time. Here is a link to an image of the dial: https://www.duetimeblog.com/wp-content/uploads/2009/09/img_2007.jpg

Re: Terms to describe markings on dials (or other objects)

Possibilities from art historical use are: Positive, above background surface--In raised letters, or lettering in relief Negative, below background surface--In sunken letters, or lettering in counter-relief Sara Schechner ---

RE: Astronomy Picture of the Day (Again)

I love it! I just forwarded it on to some folks. Happy Solstice Everyone!!! Sara On Wed, Dec 21, 2016 at 8:43 AM, Robert Terwilliger > wrote: This is a good one! Traces of the Sun

RE: wonderful exhibit of sundials in New York City - only until 23 April

I recently saw the show too, and it contains many of the most famous dials from antiquity. It is a show of "greatest hits." To me, that was the most amazing part. Well worth seeing before it closes in April. For those who cannot make it, there is a good website. You can start here to whet

Maignan's ceiling sundial in the Palazzo Spada

Dear All, A colleague is looking for source material on Emmanuel Maignan's catoptric sundial on a ceiling in the Palazzo Spada in Rome. Maignan published his own account of the design in Perspectiva horaria sive De horographia gnomonica tum theoretica, tum practica libri quatuor (Rome, 1648).

publication on Science of Time, with sundials

Dear Friends, In June 2016, I attended a symposium on the Science of Time. The proceedings have now been published by Springer, and are available for free download here: https://link.springer.com/book/10.1007/978-3-319-59909-0 The Science of Time 2016: Time in Astronomy & Society, Past,

RE: publication on Science of Time, with sundials

%202016%20BOOK_978-3-319-59909-0.pdf?dl=0 I hope this will help. Sara -Original Message- From: Richard Langley [mailto:l...@unb.ca] Sent: Thursday, November 02, 2017 3:27 PM To: Schechner, Sara Cc: sundial@uni-koeln.de Subject: Re: publication on Science of Time, with sundials For free

Fwd: [HASTRO-L] Archaeologists Find Rare Ancient Roman Sundial Still Inscribed With Owner's Name

Archaeologists Find Rare Ancient Roman Sundial Still Inscribed With Owner's Name (This is apparently recent news.) "Archaeologists digging at a theater have uncovered an ancient Roman sundial that a man had built to celebrate winning an election to public office. The 2,000-year-old sundial,

Re: Dyptich sundial - help!

I am camping at Stellafane with little connection, so will keep this brief until I return to civilization! The gnomon is adjustable for different latitudes. The choice determines the correct horizontal scale to use around the compass. The 2 pin gnomon scaphe sundial are for finding Italian

Re: Dyptich sundial - help!

The diptych was made by Thomas Ducher. Sent from my iPhone On Aug 10, 2018, at 12:48 PM, Michael Ossipoff mailto:email9648...@gmail.com>> wrote: Yes, the Boy Scouts of America at least used to sell a Compass-Oriented Dyptich dial with several concentric rings, each having different

loss of Peter Abrahams

Dear Friends, Many of you may have known Peter Abrahams of Portland, Oregon. Peter was one of the first members of NASS, which was where I met him some 25 years ago. He was also active in other scientific instrument societies, such as the Antique Telescope Society, the Scientific Instrument

RE: Bird shapes in gnomons

. The use of a phoenix might be less to do with the Sun than the idea of renewal and rebirth, day following night, and the cycles of time. Cheers, Sara From: Steve Lelievre Sent: Wednesday, October 31, 2018 11:54 PM To: Schechner, Sara ; john.davi...@btopenworld.com Cc: Sundial List Subject: Re: Bird

RE: Bird shapes in gnomons

Hi Steve, You may know about the fabulously popular, fashionable Paris accessory from circa 1675 to the end of the 18th century: The Butterfield-type dial. The pocket dial had a gnomon with an adjustable angle for use at different latitudes. A sweet little bird's beak was the index on the

RE: Bird shapes in gnomons

Good points. From: Steve Lelievre Sent: Thursday, November 01, 2018 1:26 PM To: Schechner, Sara ; john.davi...@btopenworld.com Cc: Sundial List Subject: Re: Bird shapes in gnomons On 2018-11-01 7:49 a.m., Schechner, Sara wrote: I would not speculate that there was any mix or match; real

RE: Bird shapes in gnomons

Hi Gino, Your Bird of Time dial is gorgeous. Thanks for sharing it. Sara From: GINO SCHIAVONE Sent: Friday, November 02, 2018 2:48 PM To: Schechner, Sara ; Steve Lelievre ; john.davi...@btopenworld.com Cc: Sundial List Subject: Re: Bird shapes in gnomons Greetings all, I have enjoyed

RE: Gnomon Gap Puzzle

Dear Frank, I love the solution that Maciej pointed out in the Troschel dial (MHS 70006) and want to add that I have seen on this also on polyhedral dials. In addition, Harvard has a double-string-gnomon inclining dial by Jacques Le Maire (CHSI 7416)

RE: Gnomon Gap Puzzle

in the forthcoming volume of the Adler's sundial catalogue, which I have authored. The volume is in press! Cheers, Sara -Original Message- From: Frank King Sent: Wednesday, January 02, 2019 3:42 AM To: Schechner, Sara ; ml...@interia.pl Cc: Frank King ; sundial@uni-koeln.de Subject: Re

sundial request for Marblehead, Massachusetts

Dear Fellow Dialists, Ellaine Rose of Marblehead, Massachusetts would like to have a vertical sundial made for her home. It would be placed on a southwesterly wall facing the harbor, where it could be seen from boats. She envisions a motto, "Time and Tide Wait for No One." She needs help

sundials marked 1671

Hi Friends, I have come across two sundials having the same strange motto and both marked 1671. One is described in The Teesdale Mercury, Sept. 8, 1920 under local news. I transcribe it here: Mr. Ingram Dawson, of Oak Bank, is the owner of a quaint old sun dial, dated 1671, and bearing the

RE: sundial Digest, Vol 177, Issue 15 / Polish sundial maker G. I. Turasiewicz w Dobromilu

ker G. I. Turasiewicz w Dobromilu (Schechner, Sara) -- Message: 1 Date: Sat, 26 Sep 2020 21:54:47 + From: "Schechner, Sara" mailto:sche...@fas.harvard.edu>> To: "sundial@uni-koeln.de<mailto:sun

Polish sundial maker G. I. Turasiewicz w Dobromilu

Dear Friends, especially those in Poland. Harvard has an Augsburg-type sundial signed "G. I. Turasiewicz w Dobromilu." I would like to know more about this maker. If you know his full name, dates, and so forth, I would appreciate hearing from you. Best wishes, Sara Sara J. Schechner, PhD,

RE: Time problem

ance De : sundial mailto:sundial-boun...@uni-koeln.de>> de la part de Ross Sinclair Caldwell mailto:belmu...@hotmail.com>> Envoyé : mercredi 1 juillet 2020 16:41 À : John Davis mailto:john.davi...@btopenworld.com>>; Schechner, Sara mailto:sche

RE: Time problem

>>> In short, I am researching the biography of Filippo Maria Visconti >>> (1392-1447), duke of Milan, and you probably know that these Italian >>> princes relied heavily on astrology. So, Visconti's time of birth is known >>> precisely - "six minutes after sunrise," Monday, 23 September, 1392.

RE: animation of shadow lengths and directions during day

. It is not so precise, but makes the simple point to kids. Best wishes, Sara From: sundial On Behalf Of Schechner, Sara Sent: Wednesday, June 02, 2021 6:21 PM To: sundial@uni-koeln.de Cc: Moon, Arielle Rebekah Ascrizzi Subject: animation of shadow lengths and directions during day Hello, I am

animation of shadow lengths and directions during day

Hello, I am looking for a simple animation of how the shadow of a vertical gnomon changes in length and direction during the course of the day from sunrise to noon to sunset. Does anyone have one to recommend that could be used with a museum video. Credit will, of course, be given. Thank

ICHA grants for early career scholars

INTER-UNION COMMISSION OF HISTORY OF ASTRONOMY (ICHA) The Inter-Union Commission of History of Astronomy (ICHA) is a joint commission of the International Union of History and Philosophy of Science and Technology (IUHPST)/ Division of History of Science and Technology and the International

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