{ "item_title" : "The Basics of Sound", "item_author" : [" Christopher Cooper "], "item_description" : "Hearing sound is one thing, but understanding exactly how it works and what its properties are is another altogether. Answering questions concerning supersonic speed and breaking the sound barrier, how the human voice and ear work, and the age-old question of whether a tree falling in the forest unobserved makes any noise, this volume provides an accessible yet detailed and amply illustrated guide to the science of sound. The book concludes with the biography of perhaps the most important scientist to study sound--Alexander Graham Bell.", "item_img_path" : "https://covers1.booksamillion.com/covers/bam/1/49/947/811/1499478119_b.jpg", "price_data" : { "retail_price" : "39.77", "online_price" : "39.77", "our_price" : "39.77", "club_price" : "39.77", "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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