Quiralidade
English translation: chirality
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| 02:45 Apr 24, 2001 |
| Portuguese to English translations [Non-PRO] Science | ||||
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|  Selected response from: Brigitte Gendebien Belgium Local time: 12:01 | |||
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| Summary of answers provided | ||||
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| na | chirality |
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Answers
6 mins
chirality Explanation: A palavra que o Sr. José Lopes procurava é quiralidade ("chirality", em inglês). É um termo muito usado em química (mais especificamente em assuntos de estereoquímica), mas ainda continua arredado dos dicionários portugueses (consultei vários; apenas o Novo Dicionário Aurélio (2ª ed., 1986) apresenta as entradas Quirais e Quiralidade). (http://www.ciberduvidas.com/cgi-bin/respostas_anteriores?cor... Chirality - handedness, the quality of having non-superimposable mirror images. (http://hexane.chem.uiuc.edu/cyberprof/public/chemistry/102x/... Chirality Physics: The characteristic of an object that cannot be superimposed upon its mirror image. Particle physics: The quantum number of particles with semi-integer spin that are allowed to have only one spin state with respect to an axis of quantization parallel to the particle's momentum. For a free particle its chirality coinside with its helicity. If the particle's spin is always parallel to its momentum, it has positive chirality; antiparallel, negative. (http://research.spinweb.com/glossary/terms/chirality.htm) Reference: http://library.thinkquest.org/3659/reference/glossary.html Reference: http://www.cem.msu.edu/~cem181h/glossary.html |
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