1.6 电势梯度 (Gradient of Potential) 我们要考虑两个问题: (1)等势面与电场线的走向的关系 (2)电势的空间变化率与电场强度的关系 1.
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OK, so that's the general method of calculation, but we've seen a shortcut for work when we can show that the field is the gradient of potential.
这就是计算的一般方法,但求功的时候,如果向量场是某个势的梯度,是有捷径可走的。
For example, the electric field or gravitational field is given by the gradient of the gravitational or electric potential.
例如由重力势梯度给出的重力场,或由电势梯度给出的电场。
So, it's a force field is the gradient of a potential so, I'll still keep my plus signs.
有一个力场,它是某种势的梯度,我们还是保持正号。
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