{ "item_title" : "Sun Position", "item_author" : [" John Clark Craig "], "item_description" : "Sun Position will be a valuable resourcefor programmers and solar engineers of this century. Knowing where the sun is at in the sky, with high accuracy, is at the core of all solar energy research, whether for site planning, or real time aiming of the most sophisticated concentrating receivers, heliostats, and photovoltaic tracking systems. Sun Position meets this need with two well-documented, easy-to-implement and easy-to-translate Visual Basic algorithms. For most applications the concise 0.02 degree accuracy code works very well. However, for the most exacting requirements, Sun Position also presents a precision algorithm accurate to within 0.00003 degrees.", "item_img_path" : "https://covers1.booksamillion.com/covers/bam/1/50/017/947/1500179477_b.jpg", "price_data" : { "retail_price" : "19.95", "online_price" : "19.95", "our_price" : "19.95", "club_price" : "19.95", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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