{"product_id":"the-ultimate-solid-of-constant-width","title":"Matter Collection 終極定寬立體擺設","description":"\u003ch3\u003e\n定寬立體最精密、最複雜的版本。\u003c\/h3\u003e\n\u003cp\u003e\u003cimg data-mce-src=\"https:\/\/i.imgur.com\/Q0ZhmE8.gif\" src=\"https:\/\/i.imgur.com\/Q0ZhmE8.gif\"\/\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMatter Collection\u003c\/span\u003e我們習慣在球體上看到這種特性——滾動時寬度不變。但說來難以置信，還有其他非圓形的形狀擁有同樣特性，例如定寬立體（Solid of Constant Width）。它是少數圍繞任何軸旋轉時都能保持寬度不變的曲面之一。\u003c\/p\u003e\n\u003cp\u003e此外，The Ultimate Solid of Constant Width 亦是一件有趣的圖騰，幫助我們保持專注、想出絕妙點子。\u003c\/p\u003e\n\u003ch3 id=\"yui_3_17_2_1_1634790328251_3376\"\u003e研究了數百年的形狀\u003c\/h3\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/i.imgur.com\/IL8j3cq.gif\"\/\u003e\u003c\/p\u003e\n\u003cp\u003eLeonhard Euler 觀察到，勒洛三角形無論方向如何，寬度都保持不變。四個半徑與邊長相同的球體相交，形成勒洛三角形的立體版本，但它並沒有定寬特性。\u003cbr\/\u003e\u003cbr\/\u003eDan Bergerud 努力尋找具真正對稱性的定寬立體，他以球面包絡取代邊界。每個曲面都與四面體的邊相切，可想像為一個沿中心軸移動、半徑逐漸縮小的球體。\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e終極定寬立體有甚麼特別？\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ciframe allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\" frameborder=\"0\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/fOojOfpcPZM\" title=\"YouTube video player\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e","brand":"Matter Collection","offers":[{"title":"Polished Brass","offer_id":40463118762190,"sku":"WBRP","price":398.0,"currency_code":"HKD","in_stock":true},{"title":"Brushed Brass","offer_id":40463118794958,"sku":"WBRB","price":398.0,"currency_code":"HKD","in_stock":true},{"title":"Polished Stainless Steel","offer_id":40463118827726,"sku":"WSSRP","price":398.0,"currency_code":"HKD","in_stock":true},{"title":"Brushed Stainless Steel","offer_id":40463118860494,"sku":"WSSRB","price":398.0,"currency_code":"HKD","in_stock":true},{"title":"Polished Copper","offer_id":40642463465678,"sku":"WCRP","price":398.0,"currency_code":"HKD","in_stock":true},{"title":"Brushed Copper","offer_id":40463118893262,"sku":"WCRB","price":398.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/7011\/3486\/products\/WSSRB.jpg?v=1634791519","url":"https:\/\/wake.store\/zh\/products\/the-ultimate-solid-of-constant-width","provider":"Wake Concept Store ","version":"1.0","type":"link"}