| 单词 | sun compass |
| 释义 | > as lemmassun compass sun compass n. (a) a navigational device, typically resembling a sundial, for finding true north from the observed direction of the sun, allowing for the time of day; (b) a faculty by which an animal can navigate with respect to the position of the sun (frequently attributive). ΘΚΠ society > travel > travel by water > vessel, ship, or boat > equipment of vessel > navigational aids > [noun] > device for finding north from sun sun compass1879 1879 W. J. Shaw Elements Mod. Tactics i. 7 A very simple form of sun compass may here be described which might be useful in the field. It could be made in ten minutes with the aid of a piece of cardboard and a common brass pin. 1925 National Geographic Mag. Nov. 523/2 In clear weather the sun compass enabled us to do accurate navigation... Mr. Albert H. Bumstead..invented it for our trip and I consider it a great contribution to science. 1947 New Biol. 3 14 The sun may be either to the left or to the right of a marching hopper and it appears that the hopper while marching keeps its direction with reference to the sun. That such ‘sun-compass orientation’ exists was proved by ingenious experiments in the field. 1965 J. D. Carthy Behaviour of Arthropods vii. 101 They immediately change their direction so that they are now heading ‘correctly’. They thus show sun-compass behaviour. 1967 J. Grierson Heroes of Polar Skies iv. 65 Byrd..expected to maintain his heading by the sun compass. 1997 G. S. Helfman et al. Diversity of Fishes xxii. 401/1 Juvenile sockeye salmon..have a sun compass that they complement with a magnetic compass at night or during overcast conditions. 2015 A. Ganeri How to Live Like Viking Warrior (2016) 17/2 During the day, use your sun compass (it's like a sundial). The higher the sun, the farther south you are. < as lemmas |
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