Computation of Times of Sunrise, Sunset, and Twilight in Or Near Mountainous Terrain PDF Download
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Author: Bill C. Ryan
Publisher:
ISBN:
Category : Sun
Languages : en
Pages : 6
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Book Description
An electronic calculator with trigonometric functions can be used to compute times of sunrise, sunset, or twilight, or time of desired illumination at any location in mountainous terrain. The method is more convenient and versatile, and less cumbersome than using tables. Latitude, longitude, elevation, day of the year (1 to 366), and slope to the horizon at the azimuth of the sun at sunrise and sunset are necessary for the computations. The effects of elevation of the observation point and blocking of the sun's radiation by terrain surrounding tlie observation point are included in the computations.
Author: Bill C. Ryan
Publisher:
ISBN:
Category : Sun
Languages : en
Pages : 6
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Book Description
An electronic calculator with trigonometric functions can be used to compute times of sunrise, sunset, or twilight, or time of desired illumination at any location in mountainous terrain. The method is more convenient and versatile, and less cumbersome than using tables. Latitude, longitude, elevation, day of the year (1 to 366), and slope to the horizon at the azimuth of the sun at sunrise and sunset are necessary for the computations. The effects of elevation of the observation point and blocking of the sun's radiation by terrain surrounding tlie observation point are included in the computations.
Author: Bill C. Ryan
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 152
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Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 92
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Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 20
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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1066
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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1136
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Author: United States. Forest Service
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 124
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Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 248
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Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1122
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