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lodestone

Wikipedia English The Free Encyclopedia

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Lodestone
A lodestone, or loadstone, is a naturally magnetized piece of the mineral magnetite. They are naturally-occurring magnets, which can attract pieces of iron. Ancient people first discovered the property of magnetism in lodestone. Pieces of lodestone, suspended so they could turn, were the first magnetic compasses, and their importance to early navigation is indicated by the name lodestone, which in Middle English means 'course stone' or 'leading stone'. Lodestone is one of only two minerals that is found naturally magnetized; the other, pyrrhotite, is only weakly magnetic. Magnetite is black or brownish-black with a metallic luster, has a Mohs hardness of 5.5-6.5 and a black streak.

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THE Eng-Cro Dictionary

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lodestone
magnetski oksid  
 
magnet  

Free for individual usage/Besplatan za osobnu uporabu

Farsi dictionary

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lodestone

)loadstone(اهن ربا
الکترونيک : سنگ اهن مغناطيسى
معمارى : رگه سنگ معدن


Dizionario inglese-italiano 1.0.012

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LODESTONE
MAGNETITE. CALAMITA NATURALE. CALAMITA. POTENTE ATTRAZIONE

专业字典

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lodestone
lodge 水仓


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