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Sunday, December 22nd, 2024
the Fourth Week of Advent
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Bible Dictionaries
Iceland Spar

Webster's Dictionary

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A transparent variety of calcite, the best of which is obtained in Iceland. It is used for the prisms of the polariscope, because of its strong double refraction. Cf. Calcite.

Bibliography Information
Webster, Noah. Entry for 'Iceland Spar'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​i/iceland-spar.html. 1828.
 
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