Cathode rays

One names cathode rays a continuous ejection of electron S. When the ejections of rays are done in a Gaz excitable, they can determine a Fluorescence on their way. One can then observe the trace of these current of electrons and note their resemblances and differences with current electric in the conducting :

the cathode rays are deviated by the field of the Aimant S (you can check it on all cathode screen of your Ordinateur S or Téléviseur S; it is besides the principle which makes them function)
They are also deviated, but in a different way, by the electrostatic fields
Two cathode rays parallel S and of the same direction attract each other

They are precisely similar behaviors there, with this close the rigidity of the drivers does not allow Torsion S so spectacular in the electric wires.

Only the other appreciable difference is that the Speed electrons in a driver is considerably slower (some Millimètre S by second) that those of the electrons in the cathode rays. One should not confuse near this speed of the electrons with the speed of the electric current , which is for its part of an order of magnitude comparable with that of the Lumière, to the possible delays of induction.

The cathode rays were abundantly studied by the physicist Jean Perrin. One sees of it beautiful Démonstration S with the Palais of discovered the , with Paris.

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