The Sun and the Seasons

On december 21 the suns declination is 235 in grand

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Unformatted text preview: altitude”) is given by adding its declination to the transit altitude of the celestial equator (observer latitude dependant). On December 21, the Sun’s declination is -23.5°. In Grand Rapids the altitude of the celestial equator is _____° In Grand Rapids the noon altitude of the Sun is _____° The Sun and its Motions When the Sun is high in the sky, shadows are short. If the Sun is directly overhead, there is no shadow (truly vertical post). In GR, the highest the Sun ever gets (summer solstice) is 70.5°. There is never a time in GR where there is no shadow. The Sun and its Motions When the Sun is high in the sky, shadows are short. If the Sun is directly overhead, there is no shadow (truly vertical post). In GR, the lowest the Sun ever gets (winter solstice) is 23.5°. Winter shadows are long, even at high noon. The Sun and Its Motions Do tutorial I-32 “Solar Motion IV – The Daily Path of the Sun” Prather Book pages 87 – 90. The Celestial Sphere Seasons The Sun and its Motions Finish up what ever work may be left on yesterday’s tutorials... The Seasons Earth’s axis of rotation is inclined vs. the normal to its orbital...
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This note was uploaded on 01/31/2010 for the course AS 103 taught by Professor Millar during the Fall '08 term at Grand Rapids Community College.

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