The Sun and the Seasons

Solar time time measured by the sun sidereal time

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Unformatted text preview: . Diurnal Motion Time can be measured in different ways. Solar time: Time measured by the Sun. Sidereal time: Time measured by the stars. Diurnal Motion Time can be measured in different ways. Solar time: Time measured by the Sun. Sidereal time: Time measured by the stars. Diurnal Motion Time can be measured in different ways. Solar time: Time measured by the Sun. Sidereal time: Time measured by the stars. Diurnal Motion Do tutorial I-30 “Solar vs. Sidereal Day” Lecture Tutorial (Blackboard document) pages 30, 31. This tutorial uses a tutorial from Prather’s book as a part of itself. The Celestial Sphere Seasons The Sun and its Motions We now need to solidify your understanding of the daily (diurnal) and annual motion of the Sun, and its path among the stars (the zodiac constellations). Do tutorial I-31 “Solar Motion III – The Ecliptic” Prather Book pages 13 – 18. The Sun and its Motions Spring Equinox – March 21. Sun on the celestial equator, (Dec = 0°) rises due east, sets due west. 12-hours daylight, 12-hours night. The Sun and its Motions The highest point the Sun reaches (its transit altitude – also called its “noon altitude”) is given by adding its declination...
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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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