The spacemagneticfield of a non-magnetic prestressed concrete building is predicted by the combination of sample model measuring and mathematical simulation.
He also realised that varying the strength of an electric field would generate a changing magneticfield, even in empty space with no moving electric charges to speak of.
他同时认识到，变化电场强度将会产生一个变化的磁场，甚至在一个没有移动电子的空间中也是如此。
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This is when the last stage of their one-way trip into space begins: sailing along the magneticfield of the Earth.