This problem shows why the shape of the sun appears to be somewhat flattened at sunset...

 

 

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This problem shows why the shape of the sun appears to be somewhat flattened at sunset (Fig. 23-57). The sun subtends an angle of approximately 0.5° at the earth. Suppose that a ray from the bottom of the sun's disk is incident on the earth's atmosphere at an angle of 89.0°, and a ray from the top of the sun's disk is incident on the atmosphere at an angle of 88.5°. Find the angle between the two rays as they strike the earth's surface. Treat the atmosphere as a flat layer with a uniform refractive index of 1.0003. Sun ZanthうAnga Ô2=88-5 0, = 89 This problem shows why the shape of the sun appears to be somewhat flattened at sunset (Fig. 23-57). The sun subtends an angle of approximately 0.5° at the earth. Suppose that a ray from the bottom of the sun's disk is incident on the earth's atmosphere at an angle of 89.0°, and a ray from the top of the sun's disk is incident on the atmosphere at an angle of 88.5°. Find the angle between the two rays as they strike the earth's surface. Treat the atmosphere as a flat layer with a uniform refractive index of 1.0003. Sun ZanthうAnga Ô2=88-5 0, = 89

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