Title Text:The Earth’s magnetic field is primarily generated by currents in the liquid outer core, though some geophysicists argue that an unexplained mismatch with models suggests that the Kinder toy contains a magnet. Origin:https://xkcd.com/2840/ https://www.explainxkcd.com/wiki/index.php/2840:_Earth_Layers 地层 地球的磁场主要是由液体外核中的产生的，然而有地球物理学家认为，现实与磁流体动力学模型不匹配的现象表明健达玩具含有磁铁。 https:… Read more