Author: Lawrence ColinPublisher:
ISBN:
Category : Ionosphere
Languages : en
Pages : 164
Book Description
Computed Times of Sunrise and Sunset in the Ionosphere
Author: Lawrence ColinPublisher:
ISBN:
Category : Ionosphere
Languages : en
Pages : 164
Book Description
Computation of Times of Sunrise, Sunset, and Twilight in Or Near Mountainous Terrain
Author: Bill C. RyanPublisher:
ISBN:
Category : Sun
Languages : en
Pages : 6
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.
Scientific and Technical Aerospace Reports
Author: NASA Scientific and Technical Reports
Author: United States. National Aeronautics and Space Administration Scientific and Technical Information DivisionPublisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 2300
Book Description
A Selected Listing of NASA Scientific and Technical Reports for ...
Author: United States. National Aeronautics and Space Administration. Scientific and Technical Information DivisionPublisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 2088
Book Description
ELF System Parameter Variations
Author: Publisher:
ISBN:
Category : ELF electromagnetic fields
Languages : en
Pages : 764
Book Description
Government-wide Index to Federal Research & Development Reports
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 732
Book Description
Tracking Solar Concentrators
Author: Zafrullah JagooPublisher: Springer Science & Business Media
ISBN: 940076104X
Category : Technology & Engineering
Languages : en
Pages : 108
Book Description
Harnessing a multitude of complementary green energy sources is the only plausible way to satisfy the energy demands of a greedy global economy. The potential of solar energy (being the most abundant) in fulfilling part of the energy requirements of mankind is immense and constitutes the focal point of this book. A self-powered solar tracker that points directly towards the sun by means of an integrated control mechanism with two degrees of rotational freedom was studied and developed. The electro-mechanical control system is based on a precisely-timed microcontroller circuit that first computes the altitude and azimuth of the sun in real-time and then drives a pair of stepper motors that steer the solar tracker towards it. A locally built fibre-glass parabolic dish, the surface of which is lined with a reflective vinyl mirror film, serves to concentrate solar rays on its surface.
Journal of Research
Author: United States. National Bureau of StandardsPublisher:
ISBN:
Category : Radio
Languages : en
Pages : 934
Book Description
Author: