Question

Who modified the cathode ray tube to generate anode rays?

Answer 1

Cathode ray tube experiment:

• J.J. Thomson performed an experiment with a cathode ray discharge tube which consists of metal electrodes on either end.
• The electrode connected to the negative terminal of the battery is the cathode and the electrode connected to the positive terminal is the anode.
• The tube is connected to a vacuum pump to control the pressure of gas in the tube.
• Electricity is passed through the tube and radiations were observed to be emitted from cathode to anode. These rays emitted from the cathode are known as cathode rays.

Anode rays:

• Eugen Goldstein modified the cathode ray discharge tube.
• He passed electricity at high voltage through a gas at low pressure in a perforated discharge tube.
• During this experiment, streams of heavy particles were emitted by the positive electrode i.e. anode. The streams of positive particles are known as anode rays.
• Thus, anode rays are rays consisting of positively charged particles known as protons.

Thus, Eugen Goldstein modified the cathode ray tube to generate anode rays.