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61.17 The diurnal solar energy falling on the earth’s surface
Published online by Cambridge University Press: 22 September 2016
Extract
In a recent Note [1] a nomogram was described for calculating the times of sunrise, sunset and twilight in terms of the latitude of the observer and the time of year.
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- Notes
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- Copyright
- Copyright © Mathematical Association 1977
References
1.
Sandon, Frank, A nomogram for the times of sunrise, sunset and twilight, Mathl Gaz.
60, 210-13 (No. 413, October 1976).Google Scholar