| 释义 |
astatic, a. Electro-Magn.|əˈstætɪk|
[f. Gr. ἄστατ-ος unstable (f. ἀ priv. + στα- to stand) + -ic.]
Having no tendency to remain in a fixed position. astatic needle: one so situated or arranged as to be unaffected by the earth's magnetism.
1827J. Cumming Man. Electro Dynamics i. 13 The moveable conductors..are astatic; that is, they are so constructed as not to be affected by the magnetic influence of the earth. 1832Nat. Philos. II, Electro-Magnet. xi. §193 (U.K.S.) The moveable conductor..may be rendered astatic or independent of terrestrial influence. 1870R. Ferguson Electr. 252 An upright galvanometer with the astatic needles loaded. 1940Chambers's Techn. Dict. 56/1 Astatic galvanometer, a moving-magnet galvanometer in which the magnets form an astatic system. 1962T. Axson in G. A. T. Burdett Automatic Control Handbk. vi. §10 This fundamental characteristic of not tending to any one position has given rise to the name ‘Astatic’ voltage relay. |