Name: Dual Nature of Light and Matter
Uploaded: 2019-07-19
Duration: 7 min 31 s
Description: Light has a dual nature. It is both a wave and a particle. Explore this video about the wave and particle nature of light and the wavelength corresponding to...

Question

What are anode rays? Describe the experimental set up used for the production of these rays. How are these rays produced in a discharge tube? Describe the properties of these rays.

Accepted Answer

Anode rays (or canal rays) are streams of positively charged particles which move towards the negative electrode (cathode) in a discharge tube when high voltage electricity is passed through a gas at very low pressure taken in the discharge tube.

In $1886$ , E. Goldstein observed that if a perforated disc cathode was used in place of the plane disc cathode (as used by J.J. Thomson), and the gas pressure was not too low, coloured rays emerged on the opposite of the anode. These rays passed through the holes of the cathode, travelled in the form of a stream or canal and produced a glow on the other end of the discharge tube. Goldstein called them Canal Rays or Anode Rays. These rays were found to consist of positively charged particles. Hence, they are also known as Positive Rays.

Anode rays are originated from anode, they are positive rays. Properties of anode rays are:

1. They travel in straight lines.

2. Anode rays are made up of material particles.

3. Anode rays are deflected by electric and magnetic fields. They consist of positively charged particles because they are deflected towards the negatively charged plate.

4. The properties of anode ray depend upon the nature of the gas taken inside in the discharge tube.

What are anode rays? Describe the experimental set up used for the production of these rays. How are these rays produced in a discharge tube? Describe the properties of these rays.

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