| 单词 | planetarium |
| 释义 | ‖ planetarium|plænɪˈtɛərɪəm|
[mod.L., f. planētārius planetary: see -arium.]
a. A machine illustrating by the movement of its parts the motions of the planets; an orrery.
1734J. T. Desaguliers Course Exper. Philos. I. 430 A short Description of my Planetarium, an Instrument..to shew the Motion of the heavenly Bodies. 1774J. Adams Diary 27 Aug., Wks. 1850 II. 356 Here we saw..an orrery or planetarium, constructed by Mr. Rittenhouse, of Philadelphia. 1805H. K. White Rem. I. 170, I have constructed a planetarium, or orrery, of a very simple kind. 1849Noad Electricity i. (ed. 3) 35 A little arrangement usually called the electrical planetarium.
b. A plan, model, or structure, representing the planetary system.
1860Holland Miss Gilbert i. 15 The mystery of the chalk planetarium was solved. 1901Daily News 23 Feb. 6/3 Stonehenge has been variously..called a temple of the sun, and of serpent worship, a shrine of Buddha, a planetarium, a gigantic gallows on which defeated British leaders were solemnly hung in honour of Woden.
c. The planetary system. rare.
1835Chalmers Nat. Theol. I. ii. i. 219 It is passing marvellous that we should have more intense evidence for a God in the construction of an eye than in the construction of the mighty planetarium.
d. A device for projecting an image of the night sky at various times and places on to the interior of a dome for public viewing; a building housing this. Also attrib. and fig.
1929Encycl. Brit. XVII. 1000 Planetarium is the name given to an arrangement made by Zeiss of Jena, for producing an artificial sky. By optical methods images of the sun, moon, planets and stars are projected on a large hemispherical dome and by mechanical and electrical means the apparatus can be revolved so as to show the principal motions. 1950Engineering 21 July 63/1 A planetarium..building will have..the dome representing the sky..diameter 60 feet. The simulation of the sun, moon, planets and stars..projected on the ‘sky’ will have great educational value. 1958New Scientist 20 Mar. 6/3 Zeiss Planetaria have been operated in 32 cities. 1958[see astronavigation]. 1963V. Nabokov Gift iii. 166 Now on the [chess] board there shone, like a constellation, a ravishing work of art, a planetarium of thought. 1973C. Sagan Cosmic Connection viii. 60 Several million people visit planetariums in North America and Britain each year. |
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