What's New Under The Sun
Preparing for the Solar Eclipse of April 8th 2024
Sunday, 24 March 2024 18:30There are lots of maps showing where to go for the April 8th 2024 total solar eclipse and others showing the statistical chance of clouds such as https://www.washingtonpost.com/weather/2024/02/22/april-eclipse-clouds/ From Little Rock Arkansas to the Mazatlan coast there is a high probability of clear weather. The cities from Indianapolis through Cleveland OH, Rochester and Syracuse...
Seiko Designs Equatorial Sundial Watch
Sunday, 24 March 2024 01:42When is a watch not a watch? When it unfolds into an equatorial sundial. The watch, designed by Yu Ishihara is called a "Watch Exclusively for Sunny Men" and was part of a contest sponsored by Seiko to "help reimagine what a watch can be", aimed at creativity and perhaps for eventual production. Read about it at...
Rare Astrolabe Discovered by Chance in Verona Museum
Wednesday, 06 March 2024 00:17Dr. Federica Gigante, from Cambridge Univerity's History Faculty, discovered a rare astrolabe sequestered in a museum at Verona, Italy. Publishing in Nuncius (1 March 2024) Dr. Gigante presents "a hitherto unknown remarkable astrolabe from Al-Andalus which likely belonged to the collection of Ludovico Moscardo (1611–1681) assembled in Verona in the seventeenth century. The...
NASS 2024 Conference to be held in Vancouver, BC June 20-23
Friday, 23 February 2024 17:42The North American Sundial Society (NASS) will hold its 2024 conference in Vancouver, British Columbia, Canada from Thrursday June 20th to Sunday June 23rd. The conference will be held at the Fairmont Hotel Vancouver, 900 West Georgia Street, Vancouver BC. The conference will start Thursday afternoon with a traditional reception and sundial door prizes. Friday will be a...
World Sundial Day
Friday, 23 February 2024 16:53Spanish sundialist Esteban Martínez has launched the resolution to establish the World Sundial Day to occur each year on the Spring Equinox. According to the petition circulated by Martinez, "Reason Sundials represent the union of disciplines as disparate as Astronomy, Mathematics, [and] Geography...They have an undoubted didactic value in teaching astronomy to young people and as...
NASS Course "Elements of Dialing" Starts Jan 6, 2024
Saturday, 18 November 2023 18:21NASS is pleased to announce the upcoming third instance of Elements of Dialing, our introductory course about sundials, their history, and the science that makes them work. The free 13-lesson course, intended for those are new to sundialing, runs from January 2024. The course coordinator will be Steve Lelievre, our Secretary and editor of The Compendium. Steve will be assisted from time to time...
Smithsonian Photo Contest - Jaipur Sundial
Sunday, 05 November 2023 16:30Smithsonian Magazine holds a photo-of-the-day contest. Winner on 30 Oct 2023 was Harita Sistu who took a photo of the large sundial of Jantar Mantar, Jaipur India (taken in July 2022). Harita notes: "I wanted to try my best to capture just how massive the instrument is and bring focus into the incredible skill that went into designing and constructing it." See other NASS...
Houston Pavillion - World's Largest Sundial
Friday, 14 July 2023 23:08A sundial or performance center or solar generator? It's all three. Called the Arco del Tiempo (Arch of Time), the design by Berlin architect Riccardo Mariano provides the projection of the sun's rays onto the ground through tinted glass apertures spanning the length of its arching ceiling. The elliptical shaped spots change every hour, telling "the solar time each day and delight visitors with...
Sun Tower Update
Saturday, 01 July 2023 00:36According to NewAtlas.com (https://newatlas.com/architecture/sun-tower-open/), construction of the Sun Tower exhibition building and outdoor theater is underway in the Chinese city of Yantai. The tower is being constructed by a French firm, Ducks Sceno and the engineering firm Arup, raising to 50m (164 ft) gracefully into the sky. The tower symbolizes the historic watch towers of...
Point of Infinity Hyperbolic Monument in San Francisco
Sunday, 25 June 2023 22:17Julie Baumgardner in The Art Newspaper of Jan 13, 2023 reports on the construction project of Point of Infinity, a nearly 70 foot (21m) hyperbolic cone will reach toward the sky as part of a 50 million dollar park development on Treasure Island and Yerba Buena Island. In a competition held by the San Francisco Arts Commision on behalf of the Treasure Island Development Authority, Hiroshi...
Ice Sculpture Ephemeral in Time
Thursday, 30 March 2023 00:03In the Swiss mountains near the resort of Zermatt just beneath the Matternhorn, Stir World reports that "famed luxury Swiss watchmaker Hublot announced Daniel Arsham as its new ambassador, with a compelling piece of temporary land art. Aptly titled "Light & Time", the work is a Hublot-inspired 20-metre sundial resting in the shadows of the Matterhorn mountain." This sculptural is billed as...
New Sundial for Kika Silva Pla Planetarium
Sunday, 18 December 2022 23:00Sklar Bixby and Jeremy Meel, students at Santa Fe College in Florida took on a project to design and 3D-print a new sundial for the Kika Silva Pla Planetarium in Gainesville Florida (located on Santa Fe's Northwest Campus). Under the guidance of Dr. Philip Pinon, Sklar and Jeremy took on a semester long project as part of the Exploring Honors Mathematics class. They designed a horizontal sundial...
Joplin Sundial - More Accurate Than He Thought
- Details
- Hits: 7450
In downtown Joplin, MO, John Hadsall of the Globe digital edition began probing into the sundial on the face of Ron Jones's Commerce Building at 113 West 3rd St. Hadsall says, "I’ve been enchanted with this sundial ever since I noticed it during a lunch-break walk. I’ve written before about how I hoof it downtown and find all sorts of treasures under our noses, from the amazing front porches in the North Heights Neighborhood to the brick sidewalks that remain throughout that neighborhood, Murphysburg and other downtown residential areas."
"The sundial is believed to have always been a part of the more than 100-year-old-building. Originally built in 1904 for a machinery company, it was remodeled into a bus station in 1937." And over the years the building was abandon, finally being purchased by Jones and his business partner Ivan McElwee. John proceeded to see if the dial told accurate time, taking a photo of the dial and its shadow "at about 1:05 pm on Thursday [18 July 2019], I took a picture of the sundial at 111 W. Third St... It appeared to be a little behind: The shadow of the gnomon was still crawling toward dead center of the 12."
Mobius "Infinity Possibility" Dedicated at Brown University
- Details
- Hits: 12527
"Infinity Possibility" was dedicated this week [May 5th, 2019] at Brown University in Providence R.I. thanks to a grand design challenge to the university's School of Engineering by 1979 alum Charlie Giancarlo. Giancarlo wanted something "that would represent the rigor of engineering work, but have artistic beauty as well". According to Brown news, "A student group called Brown STEAM (Science Technology Engineering Arts and Mathematics) took up the challengte, and the result of more than two years work is a stainless steel noon mark sundial measuring 15 feet long and 4 feet high. STEAM’s then-president tapped Austin and David Schurman, both first year students at the time, as project managers. The pair assembled a team of around 20 students to start brainstorming ideas and getting input from the broader Brown community.
David Shurman and his team worked with a sundial expert, Bill Gottesman, a member of the North American Sundial Socity, Shurman said, "We wanted to explore the interplay of the mobius strip's shape with that of Brown's unique analemma path to make a sculpture personalized to the location it will inhabit for, hopefully, up to a century." In the end section of the "lazy eight" mobius strip is a hole allowing the noonday sun to fall on the northward piece of the strip below. The lower mobius band has an etched analemma showing civil noon in front of Brown's Engineering Research Center.
Read more: https://www.brown.edu/news/2019-05-08/sundial and https://www.davidschurman.com/copy-of-project-page-template
Kennesaw Gateway Park Sundial Dedicated
- Details
- Hits: 7678
On May 3, 2019 new sundial graces the City of Kennesaw, Georgia just a short way from Atlanta. The Marietta Daily Journal reported the unveiling of the sundial, a large gateway sign, and a shade structure at the new townhouse site. Developers of Kennesaw Gateway Park, a new group of townhouses within walking distance of of town center, collaborated with Kennesaw State University (KSU) to design and fabricate a 9-foot tall horizontal sundial that has been placed in the circular plaza of the housing common area. Page Burch, a lecturer of KSU's Master Craftsman Program was the lead coordinator to design and fabricate the sundial gnomon. The stainless steel gnomon has a brass verneer and an unusual tilted based that nevertheless results in the the gnomon angle of 34 degrees exactly correct for the site latitude.
Credit is also given to the KSU College of Science and Mathematics for calculating the gnomon angles and hour lines for positioning the hour-mark disks. These disks are embedded in a circular arc in the concrete. The 6am-6pm disks line up behind the gnomon mount, but again are correct when the style edge is followed to th concrete floor, precisely intersecting the 6am-6pm line. No noon-mark separation was used to account for the approximate 6-inch width of the gnomon.
Giant LEGO Sundial Now Holds Guinness World Record
- Details
- Hits: 8135
Back in March of 2012, NASS had an article about an inventive sundialist constructing a 62-LEGO block equatorial dial. That now seems like ancient history. In Beijing China, dialists have built a ring dial 9 1/2 feet in diameter consisting of more than 45,000 LEGO blocks, setting a new Guinness World Record.
The dial was the idea of Mrs. Hou at Playable Design, a company that creates and develops eduational activities using LEGO construction blocks. Astronomical professionals and structural engineers were enlisted to guide this three month construction project. According to an article from the on-line Guiness World Records website, Mrs. Hou (founder of Playable Design), says the giant ring sundial "... is a teaching tool that allows children to learn sciences across disciplines including astronomy, mathematics, history and cosmology. Inspire children to think and ask questions, when they see the ring sundial, but we are all very excited to ber recognized by the Guinness World Records at the same time.... This is an important part of a public education project. For creators and educators like us, the process of learning never stops."
Watch the time-lapse video of the dial's construction:
<mp4>LEGO_sundial_construction_2018</mp4>
Bellingham Mural Sundial Dedication
- Details
- Hits: 7099
The Sundial Mural Project has been completed. Sasch Stephens of NW Sunworks spent years putting this project together and in association with Allied Arts sponsored an international competition that ultimately commissioned Gretchen Leggitt to paint a beautiful 30' x 60' wall mural incorporating the dial. The bright and engaging sundial mural is located on the south facing wall of 207 Unity Street in Bellingham, WA.
The dial and mural will be dedicated at noon Saturday, September 22, 2018 which coinsides with the date of the fall equinox. Called the "First Shadow Celebration" city council officials and noted sudialists will be present, as will Mataio Gills, co-owner of Ciao Thyme, the building that supports the mural and vertical dial. There will be music, entertainment, information about sundials, sundial kits, and a celebration of Solar Noon on the Equinox as seen on this major vertical sundial.
If you are in the Seattle-Bellingham-Vancouver area, head for the sundial dedication and First Shadow Celebration on the equinox, Saturday, Sept 22.
New Dial for Van Vleck Observatory
- Details
- Hits: 7702
The Van Vleck Observatory has received a new sundial. In the Wesleyan news letter article by Olivia Drake who interviewed provost Joyce Jacobsen who said, "Campus doesn’t have enough outside art. A sundial is a perfect piece because it’s not only aesthetically pleasing but it’s functional too.” (https://newsletter.blogs.wesleyan.edu/2018/07/17/sundial-sculpture-installed-on-van-vleck-observatory/)
The 6 x 6 foot Muntz metal bronze sundial with stainless steel reinforcing weighing 650 pounds was carefully installed on the southern face of the 20-inch Clark Refractor dome on Foss Hill, Middletown, CT. The Alvan Clark telescope now open for public viewing was installed in July, 1922. In 1971 the Van Vleck observatory acquired the 24-inch Perkin reflector, housed in a separate dome near the west end of the old observatory building. (http://www.wesleyan.edu/astro/van-vleck/history.html)
The July 16th, almost exactly 96 years since the installation of the Clark telescope, the dome was graced by a sundial. Installation was supervised by the designer and creator, Robert Adzema (standing on the platform). He visited the campus multiple times with paper and wooden models seeking the right esthetic design. The final dial design is a true south declining sundial (notice the equinox line is parallel to the ground) but the hour lines are corrected for the longitude 72° 39.5585' W such that mean noon occurs 9m 22s after local mean noon. Hence a slight counter-clockwise twist to the hour lines (the 6am hour line is slightly below the horizontal). The shadow of the gnomon's tip traces the solstices and equinox. "I wanted the design to look timeless and in keeping with the classical nature of the building,” said Adzema. In Drake's article Adzema further commented on the patina of the bronze dial, saying, "I chose this green because it is the natural color bronze would oxidize over time. It is also a shade that looks great against the color of the observatory’s brownstone walls...The biggest difficulty was achieving the patina, which had to be applied by heating the surface of the dial and applying various chemicals and acids.”https://newsletter.blogs.wesleyan.edu/2018/07/17/sundial-sculpture-installed-on-van-vleck-observatory/
Manteca Sundial
- Details
- Hits: 6668
In a sunny corner of Ken & Molly Cooper's garden, located at their home in the Del Webb community of Manteca, CA, is an 8x12 foot horizontal sundial. The hours lines are delineated by alternating light tan and red stone pebbles. The hours themselves are squares of marble with Roman numerals from 6am to 6pm. The 4 foot gnomon is about six inches wide, made of a concrete core and flanked with marble. The hour lines are correctly laid out for a thick gnomon.
Surrounding the dial is a low brick wall decorated with lizards and butterflies. According to Rose Alban Risso, correspondent for the Manteca Bulletin, "The central focus [of the garden], a huge sundial that took him hundreds of hours to make, is the realization of a childhood dream and fascination with astronomy. The two concrete spheres here were hand painted by the retired PG&E employee. One is designated as the night sky and the other represents daytime. An armillary time piece occupies another corner of the sundial..."
A (Mostly) Human Sundial
- Details
- Hits: 5987
Normally when one mentions a human sundial, we think of an analemmatic dial carefully painted on the ground with a himan gnoman standing carefully on a date in the central walkway. But you can design a sundial that works for a day or two by just having a central platform, standing on it to become a gnomon, and letting your shadow fall on marked hours drawn on the ground below. But would you stand there all day? NASA presented their Astronomical Picture of the Day showing that "on July 19th, the Astronomy Group of students in the Progymnasium Rosenfeld created a human sundial, each participant patiently playing the role of a gnomon for 10 minutes. In this timelapse video of their temporal voyage of discovery, one image was taken every 20 seconds from 8 amuntil4 pm Central European Summer Time. Drawn on the ground are the dial hour marks calculated to show the local time for that specific date. Behind, the tower clock offers a time check... The group plans a repetition of this performance next winter to compare the length of the day and the altitude of the sun."
Video by permission of Astronomie-AG, Progymnasium Rosenfeld, Till Credner, AlltheSky.com
A Sundial Without Hours
- Details
- Hits: 7793
Sad note: A recent check of Google shows that the dial was removed in early 2016 and the lot that supported garden education is now a housing complex.
In a small park at the intersection of Morningside Dr SE and Silver Ave SE in Alburquerque, NM. is a unique horizontal sundial designed for the Nob Hill Main Street program, where the 10-foot diameter sundial anchors the southeast corner of the Nob Hill Community Garden. Created several years ago by Mike Heighway and Mira Rose, Mike explains, "The purpose of the Nob Hill Sundial is to act as an interactive gardener’s guide. It works on an annual cycle by casting a shadow from a large center piece (the gnomon) onto a concrete plate with embedded steel [diurnal] bands and porcelain tiles that describe that month’s gardening activities."
The sundial acts as an educational tool for gardeners to show what to plant throughout the year, and when to harvest. Instructions are on porcelain tiles. There are a total of 17 tiles — one tile for each month of the year, one winter solstice tile, one summer solstice tile, one tile for both equinoxes, a centering tile (the tile which dictates the very center of the design), and a "hero" tile in the shape of a historic U.S. highway sign with information about contributors to the project. Most prominent is the acknowledgement of the Garden Design by Robert Strell and Grant Funding from the New Mexico Centennial Foundation.
Read more at http://www.mikeheighway.com/projects/nhsd.html