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J2476型电子束演示仪,可定性演示电子束在三维空间中,在电场、磁场作用下的运动规律。若对该仪器作一些改进,还可以用它对电子束在电场中的运动规律作定量的研究。下面,就来作一简要说明。
The J2476 electron beam demonstrator can qualitatively demonstrate the motion law of an electron beam in three-dimensional space under the action of electric and magnetic fields. If you make some improvements to the instrument, you can also use it to quantitatively study the electron beam’s motion in the electric field. Here is a brief explanation.