Transcription of Sun Angle, Duration, and Insolation - Cengage
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74 C H A P T E R 3 E A R T H S U N R E L AT I O N S H I P S A N D S O L A R E N E R G Y. one time varies from place to place because Earth presents a 23 12 . spherical surface to Insolation . Therefore, only one line of lati- tude on the Earth's rotating surface can receive radiation at right angles, while the rest receive varying oblique (sharp) angles ( Fig. ). As we can see from Figure and c, solar 66 2 . 1. energy that strikes Earth at a nearly vertical angle renders more intense energy but covers less area than an equal amount striking Earth at an oblique angle.
74 CHAPTER 3 † EARTH–SUN RELATIONSHIPS AND SOLAR ENERGY Sun Angle, Duration, and Insolation Understanding Earth’s relationships with the sun leads us directly into a discussion of how the intensity of the sun’s rays varies from
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