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人教版高中物理第二册(必修加选修183页)给出了两幅回旋加速器的原理图1、2: 人教版课程标准教科书物理·选修3-1(101页)也给出了回旋加速器原理图3: 细心的教师会发现:两本教材给出的粒子运动轨迹有所不同,图1、2给出的轨迹间距越来越小,而图3的轨迹是等距的。那一种轨迹的画法更合理呢?分析:粒子在磁场中作圆周运动时,洛伦兹力提供向心
PEP High School Physics Book 2 (Compulsory plus optional 183 pages) gives the schematic diagram of the two cyclotrons 1 and 2: PEP curriculum standard textbooks physics Elective 3-1 (page 101) also gave a roundabout Accelerator principle Figure 3: Attentive teachers will find that the trajectory of the particles given in the two textbooks is different. The track spacing shown in Figures 1 and 2 is getting smaller and smaller, while the trajectory in Figure 3 is equidistant. Which method of trajectory is more reasonable? Analysis: Lorentz force provides enthusiasm when particles make a circular motion in a magnetic field.