According to van Bemmelen's investigation, contained in this number of the Journal, it would appear that since about 1840 the northern end of his mean magnetic axis of the Earth, deduced from magnetic declinations alone, has been moving in a northwest direction, i.e., increasing its north ...
of a magnetic field of the Earth it is transformation of kinetic energy of movements of the fused iron in the liquid core of Earth - into the magnetic energy; - the warming up of a kernel of the Earth occurs due to radioactive disintegration of elements, with excretion of thermal energy....
The compounds have a rare-earth site which is occupied by five different rare-earth elements, while the transition metal site is occupied by a single transition metal. In this way a comparison to the parent binary oxides, namely the orthocobaltites, -chromites and -ferrites is possible. X-...
An inductively coupled plasma mass spectrometry method was established for direct determination of some (ultra)trace elements in salt samples applying aero... Serhat D?ker,M Uslu - 《Food Analytical Methods》 被引量: 9发表: 2014年 A Combinatorial Study of Photoelectrochemical Properties of Fe-W-...
Discover what the Earth's magnetic field really is and what causes it in the first place. Learn its purpose and understand its important role on...
Geomagnetic field - Sources, Steady, Magnetic: Observations of the magnetic field of Earth’s surface indicate that more than 90 percent of this field arises from sources internal to the planet. A variety of mechanisms for generating this field have been
earths fall into the 50th percentile of elemental abundances. By the early 21st century,Chinahad become the world’s largest producer of rare-earth elements.Australia,Brazil,India, Kazakhstan,Malaysia,Russia,South Africa, and theUnited Statesalso extract and refine significant quantities of these ...
For the construction of more realistic models of magnetic stars the influence of large inhomogeneities in the distribution of line absorbing elements over ... L.,Oetken - 《Astronomische Nachrichten》 被引量: 35发表: 1979年 Equatorially trapped waves in Earth's core waves are not trapped near ...
doi:10.1016/j.pepi.2020.106433Avto GoguitchaichviliEsteban HernandezRafael GarciaRubén CejudoMiguel CervantesPhysics of The Earth and Planetary Interiors
the earth's magnetic field requires the specification of three elements for a complete statement of its magnitude and direction at an point .a commom combination comprises the vertical component .z,the horizontal component .h ,and the declination. d, which is the angle between the direction of...