| 释义 |
steregon Solid Geom.|ˈstɛriːgɒn|
[irreg. f. Gr. στερε-ός solid + γωνία angle.]
(See quot. 1881.)
1881Halsted Mensuration 78 A steregon, the natural unit of solid angle, is the whole amount of solid angle about a point in space. 1883W. Thomson in Encycl. Brit. XVI. 25/2 [Adopts the word from Halstead, but uses it for ‘a plane solid angle’, i.e. the amount of solid angle at the centre which is subtended by the hemisphere]. |