| 释义 |
stephanome|ˈstɛfənəʊm|
[irreg. f. Gr. στέϕανο-ς crown (taken in the sense of corona 1) + -νόµος distributor.]
An instrument for measuring the angular dimensions of fog-bows, halos, etc.
1889Times 21 Mar. 3/3 The stephanome..is used for measuring the angular size of halos, fog-bows, and glories at the Ben Nevis Observatory. 1890Lond. etc. Philos. Mag. Ser. v. XXIX. 454 note, A stephanome, consists of a graduated bar, at one end of which the eye is placed, and in which slides a cross-bar carrying certain projections. With its aid faint objects, for which a sextant would be useless, may be measured to within 5′. |