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3 天前 · Sumerian written history reaches back to the 27th century BC and before, but the historical record remains obscure until the Early Dynastic III period, c. 23rd century BC, when the language of the written records becomes easier to decipher, which has allowed
1 天前 · 1st century AD: The first use of respiratory protective equipment is documented by Pliny the Elder (c. 23 AD –79) using animal bladder skins to protect workers in Roman mines from red lead oxide dust.
4 天前 · 三国. 三國 （狹義220年—280年，廣義184年／190年／208年—280年 [a] ）是 中國歷史 一段三個國家並立的時期（237年—238年为四个国家并立时期），也是 魏晉南北朝 和 六朝 的開端時期。. 一般認為是從 建安 元年 起算 [7] :154 。. 三國是指 曹魏 、 蜀漢 及 孫吳 [7 ...
3 天前 · The "Third Chinese Empire" (中華第三帝國) consisted of the Liao dynasty, the Jin dynasty, the Yuan dynasty, the Ming dynasty, and the Qing dynasty. Accordingly, the terms "Chinese Empire" and "Empire of China" need not necessarily refer to imperial dynasties that had unified China proper.
1 天前 · Al-Ghazali's 11th century book titled Tahāfut al-Falāsifa ("Incoherence of the Philosophers") marked a major turn in Islamic epistemology. The encounter with skepticism led al-Ghazali to investigate a form of theological occasionalism , or the belief that all causal events and interactions are not the product of material conjunctions but rather the immediate and present will of God.
2 天前 · Saint George (Greek: Γεώργιος, translit. Geṓrgios; died 23 April 303), also George of Lydda, was an early Christian martyr who is venerated as a saint in Christianity.According to tradition, he was a soldier in the Roman army.Of Cappadocian Greek origin, he became a member of the Praetorian Guard for Roman emperor Diocletian, but was sentenced to death for refusing to recant his ...
18 小時前 · Alan Mathison Turing OBE FRS (/ ˈ tj ʊər ɪ ŋ /; 23 June 1912 – 7 June 1954) was an English mathematician, computer scientist, logician, cryptanalyst, philosopher and theoretical biologist.
