Figure number:
File name:

The preview Image has been scaled down to fit the screen. Actual image is both larger and clearer.

Title: Goldstein's apparatus
Caption: Goldstein's apparatus for the study of positive particles. Some positive ions, attracted toward the cathode, pass through the holes in the cathode. The deflection of these particles (not shown) in a magnetic field can be studied in the region to the left of the cathode.
Keywords: Goldstein's apparatus, cathode, magnetic field, cations