Explain cathode ray discharge tube from perforated anode
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Answer:
A gas discharge tube consisting of two electrodes, one positive (Anode) and the other negative (cathode) with sufficient potential between them a current will begin to flow. The potential is several thousand volts. ... Electrons will travel from the Cathode to the Anode, and positively charged ions travel in the other.
Answer:
Explanation:
A gas discharge tube consisting of two electrodes, one positive (Anode) and the other negative (cathode) with sufficient potential between them a current will begin to flow. The potential is several thousand volts. the exact voltage to cause current to flow is a function of gas pressure and distance between electrodes. Electrons will travel from the Cathode to the Anode, and positively charged ions travel in the other. The charges, being in an electric field, will also be accelerated towards their respective electrode. In their course they will collide with other molecules, exciting them to fluoresce. Putting holes in the Cathode allows the positive ions to pass through the cathode separating them from negative ions (which are just electrons). This allows them to be studied for the purposes of determining their mass. generally the gas is enriched with hydrogen as to make a majority of positive ions proton, the hydrogen nucleus. Different hole patterns create different patterns. They were originally called "channel rays".
Perforating the cathode was a evolution of original experiments done by Faraday in the 1840's. Faraday was the first to place two electrodes in a closed cylinder with an applied voltage. As he evacuated the tube he got the gas to fluoresce. He also noted dark lines in the column known a Faraday lines.