E. Goldstein was the person who conducted an experiment in which he passed electricity through two electrodes that were placed on either side of the glass or vacuum chamber. Then the electrodes were connected to an external electricity source. When the electricity was passed through the electrodes, the positively charged ions were emitted from the positive electrode and these rays were known as the canal rays. Goldstein conducted discharge tube experiments on his own in the 1870s named Kathodenstrahlen, or the cathode rays, which are light emissions, examined by others. He found a few major properties of the cathode ray, which led to their subsequent discovery as the electron, which is the first subatomic particle. Finally, he concluded that in addition to the cathode rays or ions that travel from the negatively charged electrode towards the positively charged electrodes, other rays travelled in opposite directions which is from the positively charged electrode to the negatively charged electrode. These rays deflected oppositely when they were subjected to magnetic and electric fields.