Some context: Zhang Heng (Chinese: Zhang Heng ; AD 78-139), formerly romanized as Chang Heng, was a Han Chinese polymath from Nanyang who lived during the Han dynasty. Educated in the capital cities of Luoyang and Chang'an, he achieved success as an astronomer, mathematician, scientist, engineer, inventor, geographer, cartographer, artist, poet, statesman, and literary scholar. Zhang Heng began his career as a minor civil servant in Nanyang. Eventually, he became Chief Astronomer, Prefect of the Majors for Official Carriages, and then Palace Attendant at the imperial court.
Zhang Heng's mechanical inventions influenced later Chinese inventors such as Yi Xing, Zhang Sixun, Su Song, and Guo Shoujing. Su Song directly named Zhang's water-powered armillary sphere as the inspiration for his 11th-century clock tower. The cosmic model of nine points of Heaven corresponding with nine regions of earth conceived in the work of the scholar-official Chen Hongmou (1696-1771) followed in the tradition of Zhang's book Spiritual Constitution of the Universe. The seismologist John Milne, who created the modern seismograph in 1876 alongside Thomas Gray and James A. Ewing at the Imperial College of Engineering in Tokyo, commented in 1886 on Zhang Heng's contributions to seismology. The historian Joseph Needham emphasized his contributions to pre-modern Chinese technology, stating that Zhang was noted even in his day for being able to "make three wheels rotate as if they were one." More than one scholar has described Zhang as a polymath. However, some scholars also point out that Zhang's writing lacks concrete scientific theories. Comparing Zhang with his contemporary, Ptolemy (83-161) of Roman Egypt, Jin Guantao, Fan Hongye, and Liu Qingfeng state: Based on the theories of his predecessors, Zhang Heng systematically developed the celestial sphere theory. An armillary constructed on the basis of his hypotheses bears a remarkable similarity to Ptolemy's earth-centered theory. However, Zhang Heng did not definitely propose a theoretical model like Ptolemy's earth-centered one. It is astonishing that the celestial model Zhang Heng constructed was almost a physical model of Ptolemy's earth-centered theory. Only a single step separates the celestial globe from the earth-centered theory, but Chinese astronomers never took that step. Here we can see how important the exemplary function of the primitive scientific structure is. In order to use the Euclidean system of geometry as a model for the development of astronomical theory, Ptolemy first had to select hypotheses which could serve as axioms. He naturally regarded circular motion as fundamental and then used the circular motion of deferents and epicycles in his earth-centered theory. Although Zhang Heng understood that the sun, moon and planets move in circles, he lacked a model for a logically structured theory and so could not establish a corresponding astronomical theory. Chinese astronomy was most interested in extracting the algebraic features of planetary motion (that is, the length of the cyclic periods) to establish astronomical theories. Thus astronomy was reduced to arithmetic operations, extracting common multiples and divisors from the observed cyclic motions of the heavenly bodies.
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Some context: Once is a 2007 Irish romantic musical drama film written and directed by John Carney. The film stars Glen Hansard and Marketa Irglova as two struggling musicians in Dublin, Ireland. Hansard and Irglova had previously performed music as the Swell Season, and composed and performed the film's original songs. Once spent years in development with the Irish Film Board and was made for a budget of EUR112,000.
Once was met with extremely positive reviews from critics. Upon its March 2007 release in Ireland, RTE's Caroline Hennessy gave the film 4 out of 5 stars and termed it "an unexpected treasure". About the acting, this Irish reviewer commented, "Once has wonderfully natural performances from the two leads. Although musicians first and actors second, they acquit themselves well in both areas. Irglova, a largely unknown quantity alongside the well-known and either loved or loathed Hansard, is luminous." Michael Dwyer of The Irish Times gave the film the same rating, calling it "irresistibly appealing" and noting that "Carney makes the point - without ever labouring it - that his protagonists are living in a changing city where the economic boom has passed them by. His keen eye for authentic locations is ... evident". In May, on Ebert & Roeper, both Richard Roeper and guest critic Michael Phillips of the Chicago Tribune gave enthusiastic reviews. Phillips called it, "the most charming thing I've seen all year", "the Brief Encounter for the 21st century", his favorite music film since 1984's Stop Making Sense and said, "It may well be the best music film of our generation". Roeper referred to the film's recording studio scene as "more inspirational and uplifting than almost any number of Dreamgirls or Chicago or any of those multi-zillion dollar musical showstopping films. In its own way, it will blow you away." Once won very high marks from U.S. critics; it is rated 97% "fresh" by the film review aggregation site Rotten Tomatoes and scored a grade of 88 ("universal acclaim") according to Metacritic. In late 2007, Amy Simmons of Time Out London wrote, "Carney's highly charged, urban mise-en-scene with its blinking street lamps, vacant shops and dishevelled bed-sits provides ample poetic backdrop for the film's lengthy tracking shots, epitomised in a sequence where the Girl walks to the corner shop in pyjamas and slippers while listening to one of the Guy's songs on her personal stereo. With outstanding performances from Hansard and new-comer Irglova, Carney has created a sublime, visual album of unassuming and self-assured eloquence." The Telegraph's Sukhdev Sandhu said, "Not since Before Sunset has a romantic film managed to be as touching, funny or as hard to forget as Once. Like Before Sunset, it never outstays its welcome, climaxing on a note of rare charm and unexpectedness." The film appeared on many North American critics' top ten lists of the best films of 2007: In 2008, the film placed third on Entertainment Weekly's "25 Best Romantic Movies of the Past 25 Years".
did it win any awards?
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The film appeared on many North American critics' top ten lists of the best films of 2007: