Cathode rays and deflecting fields can be used to magnify shadow images in a manner analogous to an optical lens system.
With the help of this supplement, the experiment: Maltese-Cross Tube (item no: UE3070300-115 / 8000659 is modified in such a way that the following electron-optical observations can be made:
By increasing the magnetic field (raising the voltage to the coil) the image is seen to rotate, diminish to a spot and then enlarge again in inverted form.
Anode voltage variations provide a further element of control.
![实验: 马耳他十字阴极射线管,补充组件
(115伏, 50/60赫), 8000661 [UE3070300S-115], Electron tubes](/imagelibrary/UE3070300S-115/UE3070300S-115_01_实验-马耳他十字阴极射线管-补充组件-115伏-5060赫.jpg)
![实验: 马耳他十字阴极射线管,补充组件
(115伏, 50/60赫), 8000661 [UE3070300S-115], Electron tubes](/thumblibrary/UE3070300S-115/UE3070300S-115_01_1200_1200_实验-马耳他十字阴极射线管-补充组件-115伏-5060赫.jpg)
