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bn:00045752n
Noun Concept
Categories: Polarization (waves), Calcium minerals, Medieval Iceland, Christiaan Huygens, Wikipedia articles incorporating a citation from the 1728 Cyclopaedia
EN
Iceland spar  Double-refractory spar  Iceland crystal  Optical calcite
EN
A transparent calcite found in Iceland and used in polarizing microscopes WordNet 3.0
Definitions
Relations
Sources
EN
A transparent calcite found in Iceland and used in polarizing microscopes WordNet 3.0 & Open English WordNet
Iceland spar, formerly called Iceland crystal and also called optical calcite, is a transparent variety of calcite, or crystallized calcium carbonate, originally brought from Iceland, and used in demonstrating the polarization of light. Wikipedia
A transparent crystallized mineral Wikipedia Disambiguation
transparent variety of calcite Wikidata
A transparent form of calcite, used to demonstrate the polarisation of light. Wiktionary
IS A
calcite
mineral variety
CRYSTAL SYSTEM
trigonal crystal system
DESCRIBED BY SOURCE
Armenian Soviet Encyclopedia
TYPE LOCALITY (GEOLOGY)
density
WordNet 3.0 & Open English WordNet
EN
Iceland spar
Wikipedia
EN
Iceland spar
Wikidata
EN
Iceland spar
Wiktionary
EN
Iceland spar
Wikipedia Redirections
EN
Double-refractory spar, Iceland crystal, Iceland Spar, Optical calcite
Wikidata Alias
EN
Iceland crystal

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