The university further disclaims all responsibility for any loss, injury, claim, liability, or damage of any kind resulting from, arising out or or any way related to (a) any errors in or omissions from this web site and the content, including but not limited to technical inaccuracies and typographical errors, or (b) your use of this web site and the information contained in this web site.the university shall not be liable for any loss, injury, claim, liability, or damage of any kind resulting from your use of the web site. The university expressly disclaims all warranties, including the warranties of merchantability, fitness for a particular purpose and non-infringement. This web site is provided on an "as is" basis. "Do not do demos unless you are an experienced chemist!" Please read the following disclaimer carefullyīy continuing to view the descriptions of the demonstrations you have agreed to the following disclaimer. Plug both of the power supplies into the power strip and plug the power strip into an outlet.Connect the leads from the other high voltage DC power source to the deflector plates at the top and bottom of the CRT. The positive lead should be connected to the top and the negative lead should be connected to the bottom.Connect the leads from the 120 VAC output of the high voltage DC/ 120 VAC power supply to the CRT. One lead piggybacks onto the back of the high voltage negative lead and the other goes into the other jack right beside it, off-center on the back of the electron gun part of the CRT.Connect the high voltage output from the high voltage DC/ 120 VAC power supply to the electron gun of the cathode ray tube (CRT). The negative lead goes in the jack in the center of the back of the electron gun part of the CRT. The positive lead goes in the jack on the side of the electron gun part of the CRT.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.
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