iceland spar वाक्य
उदाहरण वाक्य
मोबाइल
- In December 1910, the Hoffell farmer, Gu�mundur J�nsson, was looking for sheep in Hoffellsdalur valley when he found a large number of Iceland spar fragments in a domed ceiling just inside the entrance of the main building of the University of Iceland, and in the altar of the University chapel.
- To derive a course to steer relative to the sun direction, he uses a sun-stone ( Solarsteinn ) made of Iceland spar ( optical calcite or Silfurberg ), and a " horizon-board . " The author constructed the latter from an Icelandic saga source, and describes an experiment performed to determine its accuracy.
- Other major resources are natural gas, coal, ferrous metal ores, manganese, chromite, iron ores, non-ferrous metals ores ( lead, tungsten ), non-metallic ores ( rock crystal, fluorite, iceland spar, sulfide pyrites, barite, silicates, silica, asbestos, talcum ), deposits of precious and semi-precious stones and natural stones ( malachite, jade, granite ).
- अधिक वाक्य: 1 2
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