美是均衡中有錯愕-「完美的理論」100周年 / 陳丕燊|探索講座〖一方程式見宇宙〗

臺大科學教育發展中心CASE October 13, 2015
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臺灣大學科學教育發展中心(Center for the Advancement of Science Education,簡稱NTUCASE)成立於2008年10月。成立宗旨乃在期許能將臺灣大學的科學研究及相關專業,貢獻於科學教育、科學素養,以及科技文化之啟迪養成,深耕在地放眼國際,將NTUCASE打造成一個以臺大為基地的華文科教資源平台。 NTUCASE採雙軌策略,藉由時興的「網路」、「傳播」,舉辦各項科教活動、開發科普影音網路節目、經營科普多媒體傳播,同時推動科普平面、電子出版等。以推動科學人文跨科際教育的新觀念,集結科教、科傳社群革新科學教育,開創了臺灣科學教育前所未有的紀錄。

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說明愛因斯坦的廣義相對論,距離1915年於普魯士皇家學院的初登場,忽悠已屆一百週年。廣義相對論有何偉大之處?陳丕燊教授認為多數重要的物理理論,都充滿均衡與對稱之美,但是只有廣義相對論從簡單而自然的公設出發,得到一組均衡而完美的愛因斯坦場方程,它從時空的誕生到消亡,上下四方、古往今來,無所不包,一舉把理論物理的建構提高到類似歐幾理德幾何的境界。它的結構的自然性、簡單性、對稱性、自恰性、穿透性、普適性等等,在在給人智性的美感,而當這個完美的理論竟然能解釋、進而預測巨觀宇宙時,它也就同時具有感性的、甚至宗教性的美。這世上還有什麼比「完美」更美的嗎?依陳丕燊教授的看法,那應該是在完美之餘,可惜竟有一些破缺,令人錯愕。就像羅浮宮中的維娜斯雕像,如果她雙臂仍然健在、完整無缺,會不會還是那麼美呢?完美的廣義相對論對於宇宙常數的來源及其任意性,竟無從解釋。愛因斯坦曾經說:「引進這樣的常數,就意味著在相當程度上放棄了這個理論的邏輯簡單性。」然而這個史上最完美理論的瑕疵,卻使它顯得更美!且讓在科學與藝術上均有造詣的陳教授,帶領我們欣賞這個均衡中有錯愕的璀璨──廣義相對論。 活動官網:http://case.ntu.edu.tw/ex/Einstein 2015/10/3 pm2:00 ,臺灣大學應用力學館國際會議廳

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