| 单词 | Iceland spar |
| 释义 | Iceland spar (once / 142402 pages) n WORD FAMILY Iceland spar USAGE EXAMPLESHere we are helped by the property of Iceland spar, which is able to split up a ray into two divergent rays. Abney, W. de W., Colour Measurement and Mixture(2012) He and his colleagues have been experimenting with a mineral called Iceland spar. Economist(Nov 02, 2011) After three days he worked with common electricity, trying glass, heavy optical glass, quartz, Iceland spar, all without effect, as on former trials. Various, Encyclopaedia Britannica, 11th Edit...(2011) n a transparent calcite found in Iceland and used in polarizing microscopes Hyper calcite a common mineral consisting of crystallized calcium carbonate; a major constituent of limestone |
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