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INTRODUCTION TO SUN AND ARCHITECTURE cd42e50de89ad6d46ca49202efb0841c -…

- - - - during the summer and winter solstice, the equator is at an angle in terms of its orientation to the sun, while during the autumn and spring equinox, the equator is parallel to the sun
- - - - and is described using these figures
        
        angle of altitude
        
        (vertical): angular height of sun above the horizon
        line.
        
        angle of azimuth
        
        (horizontal): angle on plan between North and the
        actual direction of the sun at any time
        
        zenith
        
        point in the sky directly above the observer
        
        horizon
        
        line at which the plane of an observer
        intersects with the sphere of the sky.
        
        meridian
        
        north to south points of the horizon