what are canal rays ?
Canal rays: These are also known as anode rays which are made up of positively charged material particles known as protons. They are called as canal/anode rays because they seems to be coming from a perforated anode used in a discharge tube experiment.
The charge to the mass ratio (e/m ratio ) is not constant for these rays, and has been found different for different gases used in the discharge tube.
The mass of proton has been found to be nearly equal to that of hydrogen atom.(nearly 1).
Canal rays was discovered by Goldstein in a discharge tube experiment and observed following properties on the basis of figure given below
Following are the important properties of canal rays
- - Canal rays are positively charged which is 1.6 x 10-19 coulomb.
- - e/m ratio for canal rays is variable for different gases
- - Canal rays get diverted towards negatively charged electrodes.
- Hope it helps!!!:))
Anode rays (or canal rays) are beams of positive ions that are created by certain types of gas discharge tubes. They were first observed in Crookes tubes during experiments by the German scientist Eugen Goldstein, in 1886. Later work on anode rays by Wilhelm Wien and J. J. Thomson led to the development of mass spectrometry.