| 释义 |
birefringence Optics.|baɪrɪˈfrɪndʒəns|
[Cf. F. biréfringence, -ent.]
= double refraction (see refraction 2). Also bireˈfringent a.
1889Cent. Dict., Birefringent. 1898E. S. Dana Text-bk Min. (ed. 2) ii. 172 The wide separation of the two refracted rays by calcite..is a consequence of the large difference in the values of its indices of refraction, in other words, as technically expressed, it is due to the strength of its double refraction, or its birefringence. 1949New Biol. VII. 73 The spindle is birefringent (i.e. it has different refractive indices in different transecting planes). 1957Ibid. XXII. 67 The polarizing microscope..is a device for detecting and measuring optical anisotropy, commonly referred to as birefringence (or double refraction), because the value of the refractive index varies systematically in different directions. |