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单词 terrella
释义

terrellan.

Etymology: modern Latin diminutive of terra earth: compare Latin terrula , and see -el suffix2.Previous versions of the OED give the stress as: teˈrrella.
1. A little Earth; a small orb or planet. Now rare.
ΘΚΠ
the world > the universe > planet > [noun] > small
terrell1619
terrella1682
planetkin1813
planetule1836
1682 H. More Annot. Lux Orientalis 141, in Two Choice & Useful Treat. I should rather suspect..that the Fire will more and more decay till it turn at last to a kind of Terrella, like that observed within the Ring of Saturn.
1682 H. More Annot. Lux Orientalis 142 in Two Choice & Useful Treat. To let its Central Fire to incrustate it self into a Terrella.
a1706 J. Evelyn Hist. Relig. (1850) I. ii. 162 Only signifying His making greater worlds, and not these microcosm terrellas.
1959 Daily Tel. 23 Feb. 11/8 Col. Steinkamp used the word ‘terrella’—a little world or earth—in the context of space flight.
2. A spherical magnet, having like the earth two magnetic poles; sometimes, for experimental purposes, marked with lines representing the earth's equator, meridians, parallels, etc.: used to illustrate the dipping of the needle, and other phenomena of terrestrial magnetism. Also, a small artificial globe having a magnet within it, which behaves in the same way, and serves the same purposes. Obsolete.
ΘΚΠ
the world > matter > physics > electromagnetic radiation > magnetism > magnetic devices or materials > [noun] > a magnet > of specific shape
terrella1613
horseshoe magnet1785
bar magnet1821
U-magnet1888
1613 M. Ridley Short Treat. Magneticall Bodies 4 The first form of the Magnet..is a large one in fashion of a round ball, boule or globe, and we do call it a Terrella.
1646 Sir T. Browne Pseudodoxia Epidemica 62 The Terrella or sphericall magnet geographically set out with circles of the Globe. View more context for this quotation
1773 Lorimer in Philos. Trans. (Royal Soc.) 65 79 Whenever any one meets with a terrella, or spherical loadstone, the first thing he does is to find out its poles.
1822 T. Webster Imison's Elem. Sci. & Art (new ed.) I. 405 A small globe, having a magnet enclosed within it, which..is called a terrella.
1837 D. Brewster Treat. Magnetism 304 Shape it..so as to give it any form.., whether of a terrella,..or any other.
This entry has not yet been fully updated (first published 1911; most recently modified version published online June 2019).
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更新时间:2024/11/13 10:08:14