This is because the magnetic field(磁场) of the Earth "protects" us from the "wind".At the North and South Poles, however, some particles may get in and meet with the Earth's air. Then, the particles get "excited" and have a "dance" with the air. So, we can see the moving aur...
The magnetic field of the Earth - Merrill, McElhinny, et al. - 1998 () Citation Context ...e remnant magnetization in rocks and lava flows around the globe. The observations revealed that the orientation of the Earth’s field reverses itself randomly with an average period of 200,000 ...
The direction of the magnetic field around a straight current-carrying wire is given by which rule? A. Left-hand rule B. Right-hand rule C. Fleming's left-hand rule D. Fleming's right-hand rule 相关知识点: 试题来源: 解析 B。本题考查磁学中的定则。右手定则用于判断直导线周围磁场的方向...
Share on Facebook geomagnetic (redirected fromEarth's magnetic field) Encyclopedia Wikipedia ge·o·mag·ne·tism (jē′ō-măg′nĭ-tĭz′əm) n. 1.The magnetism of the earth. 2.The study of the earth's magnetism. ge′o·mag·net′ic(-nĕt′ĭk)adj. ...
The magnetic field of the Earth has global meaning for a life on the Earth. The world geophysical science explains: - occurrence 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; ...
Similarly, the variation in snow pile size-lighter in the eastern hemisphere and thicker in the western hemisphere-explains the more rapid pace through the top inner core.5 It not only forms a protective magnetic field (磁场) around the Earth but helps change the direction of solar winds. ...
The inclination and intensity of the resultant magnetic field were as those of the Earth's magnetic field. The purpose of the experiments was to find ... JORGEN,RABOL - 《Dansk Ornitologisk Forenings Tidsskrift》 被引量: 8发表: 2010年 Microbially assisted recording of the Earth's magnetic ...
(3,200 mi) beneath the Earth's surface. Unlike the inner (or solid) core, the outer core isliquid. Themagnetic fieldis generated byelectric currentsdue to the motion of convection currents of a mixture ofmolten iron and nickelin the Earth's outer core: theseconvection currentsare caused ...
For an experiment on the magnetic field around a current - carrying wire, what is the correct order of operations? First: A. 和三响自象万门间给厂强设身须把界什和三响自象万门间给厂强设身须把界什Connect the power supply和三响自象万门间给厂强设身须把界什和三响自象万门间给厂强设身须...
when brought under the influence of the magnet. There is, then, around a magnet a magnetic field of force which affects magnets and magnetic substances brought within it. It is found that magnetic intensity, like the intensity of sound and light, varies inversely as the square of the ...