{"product_id":"hugo-michniks-contributions-to-the-theory-of-sundials","title":"Hugo Michnik's Contributions To The Theory Of Sundials","description":"\u003cp\u003eThis is the 8th book in Fred SawyerÕs Sciatherics series.  \u003cbr\u003e\nIt includes translations of Hugo Michnik's early 20th century contributions to\u003cbr\u003e\nthe theory of sundials.  These include the first full development of the equations\u003cbr\u003e\nfor seasonal hour lines on ancient sundials, the introduction of sidereal hour\u003cbr\u003e\nlines for dials, and the invention of the bifilar sundial that indicates time \u003cbr\u003e\nfrom the intersection of the shadows of two perpendicular wires raised to \u003cbr\u003e\ndifferent heights above the dial face. The book also includes 6 explanatory \u003cbr\u003e\narticles on Michnik and his work, including the first biographical essay to \u003cbr\u003e\nidentify who Hugo Michnik was and to give details of his life.\u003c\/p\u003e","brand":"BooksWholesale","offers":[{"title":"Paperback","offer_id":44431899689121,"sku":"1toppap2810","price":33.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0462\/1120\/3233\/files\/qeekgr-front-shortedge-384.jpg?v=1718432232","url":"https:\/\/bookswholesale.myshopify.com\/products\/hugo-michniks-contributions-to-the-theory-of-sundials","provider":"BooksWholesale","version":"1.0","type":"link"}