when was the cathode ray experiment done

All materials are obtained from the physics demo prep room.Provides evidence that the cathode rays originates at the cathode and travels toward the anode.

Cathode Rays striking a Maltese Cross inside a CRT, produces a shadow. Movement of a Pinwheel in a CRT by Interaction with Cathode Rays - cathode rays striking a pinwheel inside a CRT move the pinwheel. Turn down both power supplies all the way. Turning the magnet around so that the other pole is closest to the magnetic field should cause deflection of the cathode rays in the opposite direction. The cathode ray should be deflected either upward or downward depending on which pole of the magnet is close to the beam. Bring one end of the magnet close to the front of the tube perpendicular to the axis of the beam. The trace of a cathode ray should appear on the phosphorescent screen. Turn up the power on the high voltage source connected to the electron gun. Turn on the power to both high voltage sources.

Deflection of Cathode Rays by a Magnetic Field - Turn on the power strip. Turn down both power supplies all the way. If desired, switch the leads going to the deflection plates and repeat the process. The cathode ray should be deflected downward. The cathode ray should be deflected upward. Turn up the power on the high voltage source connected to the capacitor plates.

Deflection of Cathode Rays (electron beam) by an Electric Field - Turn on the power strip.

When was the cathode ray experiment done