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Sundials and Apparent Solar Motion

Presented by: Leah Bueing, Dan Kowalczyk, Mary LaBissoniere, Mack Talcott

 

 


Getting Started - A Few Key Terms

The horizontal coordinate system describes the location of an object in space using azimuth (how far around) and altitude (how high). 

 

 

Getting Started - Introduction to a Sundial

Gnomon (pernounced noh-mon)

     

 

Plate or base

      

 

Four Types of Sundials

 


Equitorial Sundial


 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Horizontal Sundial

Horizontal Sundial

 

Vertical Sundial

       

 

Polar Sundial

Mathematics of a Sundial the Use of

 

 

 

Sundials Around Campus

University of Washington Farm:

    

[image of light rays hitting ground]

 

Physics and Astronomy Building

 

An introduction to the Analemma:


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