Wien’s Canal Ray tube
Crookes Tube, (Crookes nr 11)Wien’s Canal Ray tube is named after it’s inventor Wilhelm Wien. Wien did several experiments from 1897-1912, his experiments were similar to JJ.Thomson almost the same time. This tube has some extra electrodes compared to the Goldstein Canal Ray tube. To connect the tube in different way’s to a galvanometer the positive or negative charged particles can be measured by experiment.