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1 天前 · William Shakespeare (c. 23[a] April 1564 – 23 April 1616)[b] was an English playwright, poet, and actor. He is widely regarded as the greatest writer in the English language and the world's pre-eminent dramatist.[4][5][6] He is often called England's national poet and the "Bard of Avon" (or simply "the Bard"). His extant works, including ...
3 天前 · Linearity. The Schrödinger equation is a linear differential equation, meaning that if two state vectors and are solutions, then so is any linear combination. of the two state vectors where a and b are any complex numbers. [13] : 25 Moreover, the sum can be extended for any number of state vectors.
3 天前 · Friedrich Wilhelm Nietzsche ( / ˈniːtʃə, ˈniːtʃi / NEE-chə, NEE-chee, [10] German: [ˈfʁiːdʁɪç ˈvɪlhɛlm ˈniːtʃə] ⓘ or [ˈniːtsʃə]; [11] [12] 15 October 1844 – 25 August 1900) was a German philosopher. He began his career as a classical philologist before turning to philosophy. He became the youngest person to hold the ...
1 天前 · World War II or the Second World War (1 September 1939 – 2 September 1945) was a global conflict between two alliances: the Allies and the Axis powers. Nearly all of the world's countries, including all of the great powers, participated in the conflict, and many invested all available economic, industrial, and scientific capabilities in pursuit of total war, blurring the distinction between ...
2 天前 · The Köppen climate classification is one of the most widely used climate classification systems. It was first published by German-Russian climatologist Wladimir Köppen (1846–1940) in 1884, [1] [2] with several later modifications by Köppen, notably in 1918 and 1936. [3] [4] Later, German climatologist Rudolf Geiger (1894–1981) introduced ...
2 天前 · Sigmund Freud (/ f r ɔɪ d / FROYD, German: [ˈziːkmʊnt ˈfrɔʏt]; born Sigismund Schlomo Freud; 6 May 1856 – 23 September 1939) was an Austrian neurologist and the founder of psychoanalysis, a clinical method for evaluating and treating pathologies seen as originating from conflicts in the psyche, through dialogue between patient and psychoanalyst, and the distinctive theory of mind and ...
2 天前 · Michael Joseph Jackson (August 29, 1958 – June 25, 2009) was an American singer, songwriter, dancer, and philanthropist. Known as the "King of Pop", he is regarded as one of the most significant cultural figures of the 20th century. During his four-decade career, his contributions to music, dance, and fashion, along with his publicized ...
