Can we make cathode ray tube model by using any glass tube?
The image (7K GIF) below of a CRT used by Thomson in his experiments. It is about one meter in length and was made entirely by hand. Th diagram (6K GIF) below appeared in an article by J.J. Thomson in 1897 announcing the discovery of the electron. You may wish to compare it to the photo. The long glass finger (in the photo) projecting downward from the right-hand globe is where the entire tube was evacuated down to as good as a vacuum as could be produced, then sealed. The two plates about midway in the CRT were connected to a powerful electric battery thereby creating a strong electrical field through which the cathode rays passed. Thomson also could use magnets, which were placed on either side of the straight portion of the tube just to the right of the electrical plates. This allowed him to use either electrical or magnetic or a combination of both to cause the cathode ray to bend. The amount the cathode ray bent from the straight line using either the electric field or the magneti
