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J2433型洛仑兹力演示器的外形,如图1所示。 图中1为洛仑兹力管。管内电子枪发射出的电子束,可使惰性气体游离发光,显示出电子束的径迹。2为产生匀强磁场的一对平行环形线圈。3为电源控制组合。4为标尺及游标,用于读取电子束作圆周运动时的直径。5为角度尺,指示洛仑兹力管转动的角度。6为暗箱,以便于在较亮的场合观察电子束的径迹。
The appearance of the J2433 Lorentz force demonstrator is shown in Figure 1. In the figure, 1 is the Lorentz force. The electron beam emitted by the electron gun in the tube allows the inert gas to radiate freely and show the track of the electron beam. 2 is a pair of parallel loop coils that generate a uniform magnetic field. 3 is the power control combination. 4 is a scale and a vernier, which is used to read the diameter of the electron beam in a circular motion. 5 is the angle ruler, indicating the angle at which Lorenz’s force tube rotates. 6 is a dark box so that the electron beam trace can be observed on brighter occasions.