| 释义 |
chiral, a.|ˈkaɪərəl|
[f. Gr. χείρ hand + -al.]
Of a crystal or three-dimensional form: not superposable on its mirror image. Hence chirality |kaɪˈrælɪtɪ| [-ity] (see quot. 1894); chiroid |ˈkaɪərɔɪd|, a chiral object or process.
1894Ld. Kelvin Boyle Lect. in Jrnl. Oxf. Univ. Jun. Sci. Club 25 May 25 note, I call any geometrical figure, or group of points, chiral, and say that it has chirality, if its image in a plane mirror, ideally realized, cannot be brought to coincide with itself. 1904― Baltimore Lect. 439 For brevity I now call a molecule which has chirality, a chiroid. 1939Nature 11 Feb. 240/2 The tensor scheme of relativity is incomplete by itself to include relations of chirality, to use Lord Kelvin's term... This significance of the chiral property..is the difference between a chiral system and its mirror-image. 1957Physical Rev. CVI. 1306 (title) Chirality of K Particle. Ibid. 1306/1 An operator called ‘chirality’, which anticommutes with the parity operator, can be applied to both fermions and bosons. Ibid. 1306/2 This leads to two alternative assignments of K particles to chiral eigenstates. 1964Cambr. Rev. 24 Oct. 53/3 Only particles of one chirality interact. 1969Nature 2 Aug. 453/1 Even the complexities which abound in naming fused rings, where chirality is so important, may be resolved. |