PedaranCylinder of pure iron, 16 grams, 1 cm diameter..jpg
English: Iron is a silvery, relatively reactive metal, which is very abundant and is used for multiple purposes. Commonly it is alloyed together with carbon and other elements, to become steel. The number of different steels is very high, their characters vary over a wide span. Sometimes pure iron occurs in nature, but most is found in ores. Meteorites, that hit Earth's ground and don't evaporate before, often are iron meteorites. Iron can be seen as an energetic ideal state of matter. Smaller atoms can set energy free by fusion, larger atoms by fission, but from iron no nuclear energy can be won. Iron 56 and 58 and nickel 62 have the highest binding energy per nuclear particle. Very big stars form an iron core shortly before their final collapse and the following supernova. Iron is essential for mammals and makes our blood red. Iron is known to humanity since several millennia and has shaped our culture and civilization like no other element.
pikeun babagi – pikeun nyalin, nyebarkeun, sarta nyalabarkeun karyana
pikeun nyampurkeun – pikeun ngarobah karyana
Dumasar kana kaayaan di handap:
atribusi – Anjeun kudu ngatribusi karya ku cara nu geus ditangtukeun ku nu nyieun atawa nu méré lisénsi (tapi lain ku jalan nu sigana téh maksa pikeun Anjeun maké éta karya).
https://creativecommons.org/licenses/by/3.0CC BY 3.0 Creative Commons Attribution 3.0 truetrue
pikeun babagi – pikeun nyalin, nyebarkeun, sarta nyalabarkeun karyana
pikeun nyampurkeun – pikeun ngarobah karyana
Dumasar kana kaayaan di handap:
atribusi – Anjeun kudu ngatribusi karya ku cara nu geus ditangtukeun ku nu nyieun atawa nu méré lisénsi (tapi lain ku jalan nu sigana téh maksa pikeun Anjeun maké éta karya).
https://creativecommons.org/licenses/by/3.0CC BY 3.0 Creative Commons Attribution 3.0 truetrue
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