论文部分内容阅读
用左手定则判断正粒子的洛仑兹力方向时确是很方便的,然而初学者在用左手定则判断负粒子的洛仑兹力方向时,是比较容易出错的。因为负粒子的运动方向和电流方向相反,所以用左手定则判断其洛仑兹力方向时,四指指向必须与负粒子的运动方向相反,这与用左手定则判断正粒子的洛仑兹力方向时四指所指的方向容易混淆。为了避免差错,不妨借用“右手定则”进行判断。
It is very convenient to use the left-hand rule to judge the Lorentz force direction of a positive particle. However, when a beginner uses the left-hand rule to judge the Lorentz force direction of a negative particle, it is more prone to error. Because the direction of negative particle motion is opposite to the current direction, when the direction of the Lorentz force is determined by the left-hand rule, the direction of the four-finger must be opposite to that of the negative particle. This is in agreement with the left-hand rule to determine the Lorentz positive particle. It is easy to confuse the direction of the four fingers in the direction of force. In order to avoid mistakes, you may wish to use the “right hand rule” to make judgments.