物理实验中常常需要进行角度测量,如测量斜面的倾角、绳子与水平面的夹角、光学中的入射角与折射角等.目前市场上有很多专门测量角度的仪器,最常见的就是普通量角器,不过它的操作比较不便,而且功能不强,不能用来直接测量斜面的倾角.如图1所示,自制简易电磁阻尼式角度尺的工作原理是,利用重物在平衡状态时重力作用线与水平面 Physical experiments often need to measure the angle, such as measuring the inclination of the bevel, the angle between the rope and the horizontal plane, the angle of incidence and refraction in the optical, etc. There are many instruments on the market that specialize in measuring angles, the most common is the normal protractor, However, its operation is relatively inconvenient, and the function is not strong, can not be used to directly measure the inclination of the bevel.As shown in Figure 1, the self-made electromagnetic damping angle gauge works based on the use of heavy objects in the balance of gravity line and level