WHAT ARE CANAL RAYS OR CATHODE RAYS?
rnHOW DO THEY LED TO THE DISCOVERY OF ELECTRON?
WHAT ARE CANAL RAYS OR CATHODE RAYS?
rnHOW DO THEY LED TO THE DISCOVERY OF ELECTRON?
Cathode Rays: The cathode rays are a beam or collection of negatively charged material particles called aselectrons. They are originated at cathode, in a discharge tube experiment so are called as cathode rays and they strike over the +ve anode , which determines the negative charege on these rays. The charge to the mass ratio i.e, the e/m ratio is constant for these rays and has been found to be 1.76 X 108 coulombs/gm. while the mass on each electron is nearly equal to 1/1837th of that of hydrogen atom.(nearly 0)
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).
Cathode rays are streams of particle emitted at the cathode in an evacuated tube containing a cathode and anode. They were first observed in gas discharge tube operating at low pressure. By observing deflection in presence of magnetic field it was concluded that the particle is of negative charge. It was J.J Thomson who showed that charge to mass ratio, e/m is independent of cathode material. This particle was given name electron.
Cathode Rays: The cathode rays are a beam or collection of negatively charged material particles called aselectrons. They are originated at cathode, in a discharge tube experiment so are called as cathode rays and they strike over the +ve anode , which determines the negative charege on these rays. The charge to the mass ratio i.e, the e/m ratio is constant for these rays and has been found to be 1.76 X 108 coulombs/gm. while the mass on each electron is nearly equal to 1/1837th of that of hydrogen atom.(nearly 0)
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).
Cathode rays are streams of particle emitted at the cathode in an evacuated tube containing a cathode and anode. They were first observed in gas discharge tube operating at low pressure. By observing deflection in presence of magnetic field it was concluded that the particle is of negative charge. It was J.J Thomson who showed that charge to mass ratio, e/m is independent of cathode material. This particle was given name electron.
