Research topic: Iceland spar

Click to see an enlarged picture
Iceland spar. Other (Public Domain)

Related pictures

Click to see an enlarged picture
Click to see an enlarged picture
Click to see an enlarged picture
Rate these pictures

Iceland spar

The Columbia Encyclopedia, Sixth Edition
Iceland spar colorless variety of crystallized calcite , characterized by its properties of transparency and double refraction. It is used chiefly in the manufacture of Nicol prisms , which are essential parts of polarizing microscopes and other optical instruments. The principal deposit is in Iceland, but small quantities are found in other countries, including the United States and Mexico. Author not available, ICELAND SPAR. , The Columbia Encyclopedia, Sixth Edition 2007 ... Read more
spar
For dogtooth spar, see calcite ; for fluorspar, see fluorite ; for heavy spar, see barite ; for satin spar, see calcite and gypsum . See also Iceland spar and feldspar . Read more
Nicol prism
, optical device invented (1828) by William Nicol of Edinburgh. It consists essentially of a crystal of calcite, or Iceland spar , that is cut at an angle into two equal pieces and joined together again with Canada balsam. An ordinary beam of light... Read more

Facts and information from other sites



Related research topics

Online videos

Viking Voyages for Iceland Spar

Free newspaper and magazine articles

Free Article Chapter 1.
Free Article Accredited Inspection Scheme for Own-Label Products.(Brief Article)
Free Article Raising cash for Pudsey!

For Students and teachers!

HighBeam Encyclopedia provides students and teachers facts, information, and biographies from verified, citable sources, including:

HighBeam Encyclopedia provides students and teachers facts, information, and biographies from verified, citable sources, including: