March 2002
Page 3

Obituary of Rene Rohr

Tribute to Rene Rohr, highlighting his contributions to sundial design, literature, and his role in the BSS.
Historical Dials, The BSS and Members

March 2002
Page 4

An Isaac Newton Sundial

Describes the design and creation of a unique sundial featuring a statue of Newton holding a prism, inspired by his optical work and historic dials at Woolsthorpe.
Construction Projects, Dials: Polar, Dials: Unusual, Sundial Design & Layout

John Davis

March 2002
Page 7

The Foster-Point Sundial: Time in a Perfect Round

Explains the design of a novel sundial based on Samuel Foster's 17th-century concepts, with modern adaptations and detailed geometry, incorporating latitude, longitude, equation of time and daylight savings time adjustments.
Dials: Horizontal, How Sundials Work, Mathematics of Dialling

Fred Sawyer

March 2002
Page 14

Book Review

Review of 'La Gnomonique' by Denis Savoie, a detailed and technical guide to sundial construction methods.
Mathematics of Dialling, Sundial Design & Layout

March 2002
Page 17

A Derivation of the Equation of Time

Accessible derivation of the EoT formula using orbital eccentricity and axial tilt, with historical and mathematical context.
Equation of Time, Mathematics of Dialling

John Foad

March 2002
Page 20

The Making of the Towneley Hall Sundial

Details the conception, design, carving, and installation of a slate commemorative sundial for Richard Towneley.
Construction Projects, Dials: Vertical

Alan Smith

March 2002
Page 24

Sunrise and Sunset: An Observation

Describes observations and reflections on plotting day length (sunset - sunrise) vs time of noon for various locations in the UK and various dates.

Peter Ransom

March 2002
Page 27

Small Mystery in York

Reports on an unusual stained glass window sundial in York with a curiosity in the painting of a wrongly deliniated sundial in its centre.
Dials: Unusual, Historical Dials, Dials: Stained Glass

Tony Wood

March 2002
Page 28

A Brief History of the British Sundial Society Part 2

Second part of a historical account of the BSS's origins, early figures, and development as an organisation.
The BSS and Members

David A. Young

March 2002
Page 32

Karen's Hand Sundial: A 'Digital Universal Ring Dial'

Describes a simple sundial formed purely by the hands, giving approximate time and direction towards north.
DIY Sundial Projects, Dials: Portable, Dials: Unusual

Karen Deal Robinson

March 2002
Page 35

The Horary Quadrant

Overview of the design and historical use of various horary quadrants.
Dialling Tools, Historical Dials

Mike Cowham

March 2002
Page 39

Calendar Dials

Explores dials intended to show the date rather than the time, by reading the shadow of an equinoctial ring on a scale on the stile.
Dials: Polar, Dials: Unusual, How Sundials Work

Allan A. Mills

March 2002
Page 41

Extending the Useful Range of a Sundial

Suggests addition of vertical 'fences' to a horizontal dial to increase the legibility of the shadow for early and late hours.
How Sundials Work, Sundial Design & Layout

Mike Cowham

March 2002
Page 42

More Railway Sundials

Brief survey of some sundials seen by railway stations in Italy
Historical Dials

Gerald Stancey

March 2002
Page 42

Eight Bells and Topmasts

An excerpt from a book, with reflections on the difficulty understanding the ecliptic, the solar day and the sidereal day, and their use in maritime navigation.

Christopher Lee

March 2002
Page 44

Wheel of Time

Describes a noon mark dial with a lens at the aperture, projecting a bright spot on an analemma inscribed on a semicircular scale.
Sundial Design & Layout, Construction Projects, Equation of Time, Dials: Noon Lines