PPT-CATHODE RAY TUBE What is cathode ray tube?

The cathode ray tube CRT is a  vacuum tube  containing an  electron gun  a source of electrons and a  fluorescent  screen with internal or external means to accelerate and deflect the electron beam used to create images in the form of light emitted from the fluorescent screen The image may represent electrical . Apart from making Higgs particles, that is? . Well, many things. Not so long ago, all televisions and computer screens used the simplest form of accelerator, a cathode ray tube. . Now, more than 30000 accelerators are used for a range of important applications. Some examples…... Thermionic Emission. Electrons flow in electron clouds in metals.. The electrons easily leave the surface of hot metals – as they gain enough energy from the heat to overcome the attraction of the nuclei.. Nuar. , Josh . BOlton. , and Justyn Day. The Discovery of the Electron. Cathode Ray Tube. What . was the composition and properties of this mysterious ray. ?. Inventor: Karl Ferdinand Braun 1897. Specialized vacuum . Cathode Ray Oscilloscope (CRO). The structure of the cathode ray tube. Uses of CRO. An oscilloscope can be used as. 1. an a.c. and d.c. voltmeter,. 2. for time and frequency measurement,. 3. as a display device.. Introduction. Radiography is a highly technical field, indispensable to the modern dental practice, but presenting many potential hazards. The dental radiographic specialist must be thoroughly familiar with the procedures necessary to produce radiographs of diagnostic quality. He must also have a thorough knowledge of the hazards associated with the use of radiation and how to protect himself and the patient against those hazards. This lesson deals with the production, characteristics, and effects of radiation and how it may be used safely in dentistry. . Lecture No.6. By: . Sajid. . Hussain. . Qazi. POTENTIAL GRADIENT. It is defined as rate of change of potential with respect to displacement in the direction of electric field, i.e.,. Its unit is volt/meter or volt/cm.. PRINCIPLE. . W. hen light radiations strike fluorescent material it produces flashes of light called scintillations.. . These are detected with the help of photomultiplier tube.. BLOCK DIAGRAM :. PHOTO MULTIPLIER TUBE:. PRINCIPLE. . W. hen light radiations strike fluorescent material it produces flashes of light called scintillations.. . These are detected with the help of photomultiplier tube.. BLOCK DIAGRAM :. PHOTO MULTIPLIER TUBE:. William Kyle. Dr. Glenn Horton-Smith. Simulation Operation. A Python Based FTCS Method. The Forward Time, Central Space Method. Movement of Voltage (i.e. charge) through cathode is governed by a diffusion equation.. Dr. . Ramesh. . Tiwary. Assistant Professor. Deptt. . of Vet. Surgery and Radiology. “PRODUCTION. OF . X-RAYS”. Ionising. Radiation . Particulate or corpuscular – . alpha. , . beta particle. , . INTRODUCTION. . When some inert gas (e.g. argon, neon, helium etc.) at low pressure is purposely introduced in a vacuum tube, the resulting device is known as a gas- filled tube. A gas- filled tube differs form a vacuum tube in one very important respect.. What Is Cathode Ray Tube(CRT)?. CRT stands for Cathode Ray Tube. CRT is a technology used in traditional computer monitors and televisions. The image on CRT display is created by firing electrons from the back of the tube of phosphorus located towards the front of the screen.. Cathode Ray Oscilloscope. The Cathode Ray Oscilloscope (CRO) is a very useful and versatile laboratory instrument used for display, measurement and analysis of waveform of electrical and electronic circuits.. Dental radiology. History. In 1895, Roentgen discovered the first example of ionizing radiation, x-rays. The key to Roentgens discovery was a device called a Crooke’s tube, which was a glass envelope under high vacuum, with a wire element at one end forming the cathode, and a heavy copper target at the other end forming the anode. When a high voltage was applied to the electrodes, electrons formed at the cathode would be pulled towards the anode and strike the copper with very high energy. Roentgen discovered that very penetrating radiations were produced from the anode, which he called x- rays (the symbol .