Who discovered canal rays?
In this Post we are going to discuss about discovery of canal rays and properties of anode rays.
If the cathode in a discharge tube is perforated, "luminous rays" are observed behind the cathode. These rays travel in a direction opposite to the cathode rays, i.e., from the anode to the cathode. Those rays produce fluorescence when they strike a fluorescent screen present at the back of the cathode. (Fig. 1.1). They are deflected by electric and magnetic fields. The direction of deflection indicates that they're +vely charged. Those rays are known as Anode rays or canal rays.
These rays consist of positively charged ions produced by the ionisation of the gas atoms by the fast moving electrons of the cathode rays. Those +ve ions travels in the direction of the cathode and emerge out via the perforations within the cathode. The +ve ions are gas atoms which have Lost one or greater electrons. Hence the mass of a positive ion is almost the same as that of a neutral gas atom.
Properties of anode rays
(1) These rays affect a photographic plate, produce fluorescence and penetrate thin aluminium foils.
(2) They are deflected by electric and magnetic fields. The direction of deflection indicates that they are positively charged. For the identical electric or magnetic field, the significance of deflection suffered through Anode rays is a good deal smaller than that of cathode rays.consequently, the Anode ray particles are lots heavier than the electrons.
(3) The velocities of all the anode ray particles isn't identical. The velocities of these rays range from 10⁵ to 10⁶ ms-¹
