- 産業: Astronomy
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Planetary Science Research Discoveries (PSRD) is an educational site sharing the latest research by NASA-sponsored scientists on meteorites, asteroids, planets, moons, and other materials in our Solar System. The website is supported by the Cosmochemistry Program of NASA's Science Mission ...
Механических поломок и химического изменения горных пород и минералов в земной поверхности под воздействием воздуха, влаги и органических веществ.
Industry:Astronomy
Iron meteorites are made, almost completely, of iron and nickel metal. They are chemically distinguished and grouped according to the abundances of the trace elements such as gallium and germanium, as well as nickel. Initially, irons were classified into four groups and were given Roman numerals I, II, III, and IV. Today twelve groups are recognized and designated further by letters A through F according to concentrations of siderophile ("iron-loving") trace elements. Iron meteorites that do not fit into the groups are called ungrouped. The two iron-nickel alloys in iron meteorites are called kamacite (low-nickel content, usually up to 7. 5 wt% nickel) and taenite (high-nickel content, ~20 to 50 wt% nickel). These alloys are rare in terrestrial rocks. (See also Widmanstätten Pattern. )
Industry:Astronomy
Невидимая часть светового спектра, где волны короче, чем видимого спектра и дольше, чем рентгеновские лучи.
Industry:Astronomy
Часть земли или другой планеты, это вода, в том числе жидкой воды, льда и водяного пара на поверхности, под землей, или в атмосфере.
Industry:Astronomy
MgAl<sub>2</sub>O<sub>4</sub>, magnesium aluminum oxide mineral, with Cr able to substitute for Al.
Industry:Astronomy
Температурная шкала, которая присваивает значение 0° C до freezing point воды и значение 100 ° C до точки кипения воды при нормальном давлении. Чтобы преобразовать по Цельсию в градусы по Фаренгейту: умножить на 9, а затем разделить на 5, а затем добавить 32.
Industry:Astronomy
The region of "altered space" that will interact with the magnetic properties of a magnet. It is located mainly between the opposite poles of a magnet or in the energetic space about an electric charge in motion.
Industry:Astronomy
