2012

Volume 19 Number 1, March 2012

• Sundials for Starters – World’s Largest & Smallest – Robert L. Kellogg
• Canonical and Antique Hours, and St. Benedict – Frans W. Maes
• Sundial Sightings… At Kalamazoo Nature Center – Mark Montgomery
• Quize Answer: The Relocated Equatorial Sundial – Feustel & Wieland
• A Look at Using a Watch as a Compass – Jeffrey L. Kretsch
• Daylight Saving Time – C.J. Corliss
• Two Sundials in Drama, Greece – Theodossiou, et. al.
• Gnomonic Diversions: A Motorized Sundial – Silvio Magnani
• The Sundial of Cicero – Massimo Goretti
• Horizontal Layouts 1-4 – Fred Sawyer
• The Serendipitous Sundial – Paul Kinion
• An Equicurvilinear Layout         Francis Reymann
• The Tove’s Nest
• Digital Bonus: CadranMulticurv.xls (Francis Reymann), OudemansCurve.pdf (Fred Sawyer), Reflsun.exe (Gianni Ferrari) and Reflsun_Manual.pdf (manual for reflection sundials)

2011

Volume 18 Number 4, December 2011

• Displaced Sundials – Rolf Wieland
• Quiz Answer: The Fractured Dial Face – Mac Oglesby
• A Sundial for Rheticus – Helmut Sonderegger
• Digital Bonus
• British Sundial Safari to le Mans, France – Jack Aubert
• Sun City Sundial Re-dedication – John Carmichael
• A Stained Glass Spot Dial – Mark Montgomery
• Shadow Casting and Lines on Spherical Sundials – Part 1 – Ortwin Feustel
• Quiz: The Relocated Equatorial Sundial – Ortwein Feustel
• How to Build a Geographic Sundial – Gianpero Casalegno
• Hour and Date Lines on a Round Tower – Rolf Wieland
• The Equation of Time from Bender’s Big Score (2007)
• The Tove’s Nest
• A Fool’s Errand

Volume 18 Number 3, September 2011

• Sundials for Starte - Video Potpourri  –  Robert L. Kellogg
• Further Notes On The Spherical Gnomon Sundial – Hal Brandmaier
• A Shadow Tubes Model for Spherical Gnomons – Stephen Luecking
• Quiz Answer: The Shadow of a Pergola – Rolf Wieland
• Quiz: The Fractured Dial Face – Mac Oglesby
• Apt Sundial Tour – Roger Bailey
• Digital Bonus
• Shadows Cast By a Tilted Circular Disk – Ortwin Feustel
• The Profile of the Horizon – Gianpiero Casalegno
• The Oughtred Dial and Scratch Dials – Alessandro Gunella
• Sundial Sighting… At Indiana University – Mark Montgomery
• The Tove’s Nest

Volume 18 Number 2, June 2011

• Sundials for Starters – Penumbral Shadow - Robert L. Kellogg
• Quiz Answer:  Progressive Sunsets – Bill Gottesman
• Quiz: The Shadow of a Pergola - Rolf Wieland
• Declination of the Sun (Approximating Formulae) - Herbert O. Ramp
• Digital Bonus
• Developing Ozanam's Map Dial Into A Modern Dial - Bill Gottesman
• Students Construct Sundials - Mac Oglesby
• Sundial Sighting ... At Butler University - Mark Montgomery
• The Sundial On The Bridge - C.M. Paine (1905)
• Ancient Hour Lines: Italic, Babylonian and Unequal Hours - Alessandro Gunella
• A Panoramic Sundial - L. Ghia & T. Tasselli
• How Accurate Are Bernhardt Rollers? - Rolf Wieland
• Solving A Bifilar Sundial Using Vectors - William D. Horst
• The Tove's Nest

Volume 18 Number 1, March 2011

• Sundials for Starters – Education - Robert L. Kellogg
• Quiz: Progressive Sunsets – Bill Gottesman
• Digital Bonus: Calcad, Geotagging Zarbula, Japan Sundial Society, Porter and Hartness
• To A Sundial… A Poem – D.F.G. Johnson
• James Hartness & Russell Porter, Sundials & Sunclocks – Bert Willard
• Sundials From Two Shadow Points – Yvon Massé
• The Wistlepig Farm Sundial – Hugh Munro
• The Japan Sundial Society -  Barry Duell
• Equaation Of Time – Approximating Formulae – Herbert O. Ramp
• The EoT In Your Poke – Rolf Wieland
• Geotagging Zarbula’s Sundials – Roger Bailey
• A Sundial Based On The Archimedean Spiral – Ortwin Feustel
• Dialing By Projection – Alessandro Gunella
• A Method For Orienting A Horizontal Plane – Gianni Ferrari
• Etching Sundials – Malcom Barnfield
• The Tove’s Nest

2010

Volume 17 Number 4, December 2010

• Sundials for Starters – Limits On Precision - Robert L. Kellogg
• Kate Pnd – “Come Light, Visit Me” – Art Paque
• USA Science & Engineering Festival – Robert L. Kellogg
• Sightings… At The University Of Notre Dame – Mark Montgomery
• In Pursuit Of Alpine Sundials – Woodruff T. Sullivan III
• Digital Bonuses: Versamap, Building & Using A Very Simple Heliodon, Paper Sundials On the Mall, Wendell Library Sundial, Last Scratchings of An Old Bird, and 2010 Registry Update
• Shadow Planes – Rolf Wieland
• Dinsmore’s Comparative Time Table – Fred Sawyer
• Quiz Answer: Rowbottom’s Slip – Rolf Wieland
• Envelopes Of Sunrays As Gnomon Profiles – Ortwin Feustel
• Dialing At Chalet de Graffigna – Matthew Sundquist
• A Simple Heliodon – Mac Oglesby
• Renaissance Crucifix Sundial Card Model – Chris O’ Connor
• The Tove’s Nest

Volume 17 Number 3, September 2010

• Sundials for Starters – Shadow Planes - Robert L. Kellogg
• Digital Bonuses – Gnomonics Up North … to Refsun.exe application
• The University of Georgia’s ’08 Sundial – John H. N. Whatley
• UGA To Return Historic Sundial To Prince Avenue Campus
• The Clock and The Sun-Dial – Antoine de la Motte
• Love And the Sun-Dial – Thomas Moore
• Solstice Point On  Analemmatic Sundials – Roger Bailey
• The Analemmatic Dial Solstice Point & Gnomon Height – Fred Sawyer
• Two Sundials At … Eisenhower’s Gettysburg Farm – James Ludwig
• Quiz Answers: Chipchase’s Return – Fred Sawyer
• Quiz: Rowbotton’s Slip – Fred Sawyer
• Video On Photo-Etching Metal – Tony Moss
• A Multiple Mirror Reflection Sundial – Silvio Magnani
• A Note on the Equation of Time
• The Ottoman Sundials In Aiello del Friuli – Gianni Ferrari
• Gnomonics Up North “Le Gnomoniste” (1993-2010) André E. Bouchard
• The Tove’s Nest

This issue begins with "Sundials for Starters" by Robert Kellogg from Maryland, describing the Cahokia Mounds American Woodhenge built by Mississippian Indians.  Robert then discusses the mathematics of astro-archeology to compute the alignments of the wooden posts for sunrise at summer and winter solstices and at the spring-fall equinox.  During the mathematical investigation Robert exclaims, " Our euphoria at becoming the next Indiana Jones is shattered however when we realize that (1) we have ignored refraction, (2) we've used the center of the sun and may need to use the uppoer or bottom limb of the sun as a realistic, observable marker, and (3) we have ignored the Collinsville Bluffs that rise above the true horizon."  So how do we solve the problem? Read The Compendium and find out.

The Alessandro Gunella from Italy discusses the "Discovery that Lines for Unequal Hours are Not Straight", or at least this was the thinking during the 16th century.  Are they curved or straight? 

Next the Connecticut Historical Society discusses the Sheldon Moore Sundial, a popular dial manufactured in Kennsignton, CT during the 1840's. "The manufacture of sundials was commenced prior to August 1840, in which month, a supply was sent to Breck & Company of Boston for sale at 20% commission.  In six months they sold 18 dials, which apparently encouraged Sheldon Moore to expanc his facilities".  How much did they cost?  Read The Compendium and find out.

John Davis of the UK discusses a Triple Horizontal Dial for California. John starts his article with an introduction "There are not many clients for a horizontal sundial that have consulted an original copy of William Leybourn's 1682 book on dialing before arriving to discuss their dial design.  But Dr. Rudy Light of Redwood Valley, California, had done so and also brought a copy of Leybourn's diagram of 'An Horizontall Dial with its Furniture' ... with him when he visited me in the summer of 2003.  When he explained that he wanted a large scientific dial to position ouside his house and that he 'wasn't aftriad of complications', I knew it would be an interesting project."  The result of the project is on the cover of this issue of The Compendium.

And did you know that The Entrance Exam for Japaneese Junior High School students contains questions about gnomonics?  Could you answer the questions correctly?  See if you qualify for Shibuya Kyoiku Gakuen Makuhari Junior High School, Chiba City, Japan.  Barry Duel, an NASS member interviewed the author of the gnomnics questions to find "The science teacher who made the test explained in an interview that he tries to prepare problems that students cannon easily memorize in advance.  He wants students who can think ..."

Read this issue of The Compendium to find these articles and much, much more.

Attachments:

File	Description	File size
The Compendium Dec 2008	Quarterly Journal of the North American Sundial Society	3066 Kb