{"product_id":"ambiguous-optical-illusions-9781402718298b","title":"Ambiguous Optical Illusions","description":"First you see one thing, then another. The picture changes from one moment to the next, flip-flopping back and forth. That's an ambiguous illusion, and the ones in this largest-ever collection offer constant, pleasurable surprises. Sometimes, the perceptual shift occurs if you just stare at the visual puzzle long enough; in other cases, it's necessary to invert or rotate the image first. In one picture, it's a cat-and-mouse game as you try to discover where the mouse is hiding from the cat. Another image features two minstrels playing homage to William Shakespeare--but at first, only the familiar portrait of the bard may be apparent. Once the dual nature of the illusion reveals itself, you'll never see just one object again.\u003cbr\u003e","brand":"Sterling","offers":[{"title":"Bargain","offer_id":42820354834512,"sku":"9781402718298B","price":9.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/8173\/5760\/files\/9781402718298-l.jpg?v=1785879432","url":"https:\/\/bookoutlet.com\/products\/ambiguous-optical-illusions-9781402718298b","provider":"Book Outlet","version":"1.0","type":"link"}