{ "item_title" : "Ripples in Spacetime", "item_author" : [" Marcus Veylan "], "item_description" : "On September 14, 2015, two black holes that had been spiralling together for over a billion years finally merged - and the ripple they sent through the fabric of spacetime arrived at a pair of detectors in Louisiana and Washington State. The signal lasted less than a fifth of a second. It was the most extraordinary thing humanity had ever detected.Ripples in Spacetime tells the complete story of gravitational waves: from Einstein's 1916 prediction and his own doubts about it, through Joseph Weber's false dawns and the Hulse-Taylor binary pulsar's indirect proof, to the extraordinary engineering of LIGO and the moment the universe finally spoke.You'll discover: Why Einstein predicted gravitational waves - and then spent years trying to prove they didn't existHow LIGO measures a distance change one thousand times smaller than a protonWhat the chirp of GW150914 revealed about two black holes no one knew existedHow the neutron star merger of 2017 forged gold and settled a decades-long debateWhy the 2023 pulsar timing array detection opened an entirely new gravitational wave windowWhat LISA, the Einstein Telescope, and Cosmic Explorer will find nextThis is the story of a hundred-year scientific quest, a machine of almost impossible precision, and a universe far more violent - and far more audible - than anyone imagined.Ripples in Spacetime is essential reading for anyone who wants to understand one of the greatest scientific achievements of the modern era.", "item_img_path" : "https://covers2.booksamillion.com/covers/bam/9/79/819/544/9798195444709_b.jpg", "price_data" : { "retail_price" : "16.99", "online_price" : "16.99", "our_price" : "16.99", "club_price" : "16.99", "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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