Highly evacuated electron tube with focusing electron gun and fluorescent screen inclined relative to the beam axis, so that the path of the beam can be seen and the effects of electric and magnetic fields can be studied.
Hollow Acrylic Prism, cube, With Stopper - For Physics and Light Experiments, Hollow inside allows for liquid to be poured into cube, Great for physics classrooms, made from acrylic plates properly cemented together, Excellent tool for optical experiments, Size: 25x25x25mm