为适应中学、大学物理实验和课堂表演的需要,国际上已广泛流行一系列原子、电子物理教学实验用的管子。为充实我国大、中学物理实验内容,我们试制了贝兰管、电子偏转管、激发电位管等几种管子。一、贝兰管(阴极射线管) 它是一种用来说明电子的性质和电子在磁场中运动规律的实验管,适合于中学的物 In order to meet the needs of middle school, university physics experiment and classroom performance, a series of tubes for experimental teaching of atomic physics and electronic physics have been widely popularized in the world. In order to enrich the contents of our country’s large and middle school physics experiments, we trialled several tubes, such as Beilan tube, electron deflection tube and excitation potential tube. First, Beilan tube (cathode ray tube) It is a test tube used to illustrate the nature of electrons and electrons in the magnetic field in the law of movement, suitable for middle school objects