The Equation of Time
Introduction
Solar -v- Civil Mean Time
The Components of the Equation of Time
Mathematically breaking down the Equation
Calculating the Equation of Time
The Equation of Time in Astronomy & Navigation
Displaying the Equation of Time
Equation of Time Nomograms
Ptolemy's ‘Invention’ of the Equation of Time
EoT Incidentals

Sundials that are (or can be) Equation Corrected
Why bother to correct a Sundial
Equiangular Dial Introduction
Curved Hour Lines Sundials
Moving Hour Lines Sundials
Shaped Style Sundials
Moving Style Sundials
Sundials with Alidades
Bifilar Dials

Clocks & Mechanical Means to Simulate the EoT
Mechanical Introduction
Cams and Profiles in Sundials
Equation Clocks : Background
Equation Clocks 1 : Forerunners
Equation Clocks 2 : Cams
Equation Clocks 3 : Gears
Equation Watches
Astronomical Modelling

Colophon
Why this Website
About the Author
Contact

Æquātiō Diērum The Equation of Time

The Equation of Time
Introduction
Solar -v- Civil Mean Time
The Components of the Equation of Time
Mathematically breaking down the Equation
Calculating the Equation of Time
The Equation of Time in Astronomy & Navigation
Displaying the Equation of Time
Equation of Time Nomograms
Ptolemy's ‘Invention’ of the Equation of Time
EoT Incidentals

Sundials that are (or can be) Equation Corrected
Why bother to correct a Sundial
Equiangular Dial Introduction
Curved Hour Lines Sundials
Moving Hour Lines Sundials
Shaped Style Sundials
Moving Style Sundials
Sundials with Alidades
Bifilar Dials

Clocks & Mechanical Means to Simulate the EoT
Mechanical Introduction
Cams and Profiles in Sundials
Equation Clocks : Background
Equation Clocks 1 : Forerunners
Equation Clocks 2 : Cams
Equation Clocks 3 : Gears
Equation Watches
Astronomical Modelling

Colophon
Why this Website
About the Author
Contact

Contact

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