| 释义 |
comatic, a.|kəʊˈmætɪk|
[f. L. comāt-, adj. stem f. coma coma n.2 + -ic.]
1. Optics. Of, pertaining to, or exhibiting (a) coma: see coma n.2 3; comatic circle, a circle produced in the focal plane by all rays from an off-axis point that pass through the same annular region of a lens, each such circle being a component of the coma associated with the image of the point.
1906H. D. Taylor Syst. Appl. Optics viii. 200 This circle we will call a comatic circle. 1923Trans. Optical Soc. XXIV. 3 The comatic images cannot be examined properly with the objective in its normal position owing to the oblique passage of the light through the eyepiece. 1958Van Nostrand's Sci. Encycl. (ed. 3) 380/1 Rays from an off-axis point through any zone of a lens meet the focal plane in a comatic circle. 1972IEEE Jrnl. Quantum Electronics VIII. 724/1 An improved resonator configuration for CW dye lasers is described, permitting minimum circular waist areas and compensation for comatic as well as astigmatic aberration.
2. Astron. Of or pertaining to a cometary coma.
1985Nature 9 May 124/1 Rather significant variations in brightness were detected at solar distance 8 au where no comatic activity is expected. |