| 单词 | magnetic compass |
| 释义 | > as lemmasmagnetic compass magnetic compass n. (a) a compass which indicates the direction of magnetic north, using the earth's magnetic field; = compass n.1 12; (b) Zoology the ability of some animals to sense the direction or alignment of the earth's magnetic field, for use in orientation; the supposed organ or structure that perceives this. ΘΚΠ society > travel > travel by water > vessel, ship, or boat > equipment of vessel > navigational aids > [noun] > compass compass?1518 dial1523 shipman's card1530 nautical compass1552 mariner's compass1594 pyx1686 pyxis1686 box and needle1753 magnetic compass1838 1838 Biblical Repertory Apr. 168 There seems to be good reason for believing that they preceded Europe in what are justly considered three of the most important inventions or discoveries of modern times, the art of printing, the composition of gunpowder, and the magnetic compass. 1885 Rep. Brit. Assoc. Advancem. Sci. 627 The object of producing a gyrostatic model of the magnetic compass may..be much more simply attained by merely suspending the gyrostat by a very long fine wire. 1925 H. C. Booth tr. F. Auerbach Mod. Magnetics (U.K. ed.) ix. 217 The magnetic compass has in many cases been abandoned in favour of one based on a quite different principle, the gyro-compass which depends on the turning force of a rapidly rotating body. 1969 Q. Rev. Biol. 44 260 Even a magnetic compass would not suffice to permit compensation for cross winds, or for some types of goal-directed homing. 1972 Science 7 Apr. 62/1 The magnetic compass of European robins does not use the polarity of the magnetic feild for detecting the north direction. 1990 Pilot Oct. 20/1 You have carefully aligned your gyro compass with the magnetic compass, allowing for any deviation error. 1996 Nature 18 Apr. 593/3 They have set out in their newest book—one of the slim, densely packed volumes in Springer's ‘zoophysiology’ series—to review magnetic compass orientation in animals. < as lemmas |
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