空间中的点电荷服从库仑定律
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电荷周围存在电场,电场强度用来表示电场的大小
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进一步写为
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电通量
穿过电场线的根数
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电荷均匀向四周辐射电场
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狭义相对论
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点积:两个向量相互重合的程度
叉积:两个向量相互垂直的程度
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散度是这种点积的一种均值
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电荷周围存在电场,电场强度用来表示电场的大小
进一步写为
穿过电场线的根数
电荷均匀向四周辐射电场
点积:两个向量相互重合的程度
叉积:两个向量相互垂直的程度
散度是这种点积的一种均值
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