PPT-The Cathode Ray Tube (CRT)

How it works Electrons are boiled off in the cathode negative terminal Electrons are sped up through accelerating plates parallel plates with a potential difference Electrons are deflected by a second and third set of deflecting plates. 3.1 before . viewing the slide show.. Unit 9. The Relationship Between Electricity and the Atom. Electrolysis (3.1). Cathode Ray Tubes (3.1). Mass-to-Charge Ratio for Electron (3.1). Positive Particles (3.1). T. homson. BY: Noah Rushing, Kayla Zajac, Wade Scott, Kate Schlechtweg . Background . Full name Joseph John Thomson. Born on December 18, 1856 in . Cheetham. hill, Manchester, England. Sent to Owens College at the age of 14 for 6 years. B.Sc. MIT(2007). BPKIHS,Dharan. Discovery of x-rays and development of modern radiology . During the 1870s and 1805 many university physic laboratories were investigating the conduction of cathode rays; through a large partially evacuated glass tube know as Crookes tube. An English man Sir William Crookes discovered the . Plucker. Mandy Minhas. Sukhman. . Sidhu. Personal life. Born June 18, 1801 in Elberfeld and died in. May 22, 1868.. After graduating attended. many universities. . While being a professor at. the university of Berlin, he . 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:. X-RAY TUBE. MADE OF THIN PYREX GLASS OR METAL ENCLOSURE TO WITHSTAND HIGH HEAT LOAD AND MINIMIZE X-RAY ABSORPTON. IS GAS EVAUCUATED . so electrons won’t collide with the air molecules in the tube. THE X-RAY. 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 tube. negative. positive. 99.999%. 0.001. % of a gas phase element present. Where are the rays coming from?. How could the direction of the rays be . experimentally determined?. From this experiment, it can be determined that the rays . 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 . Magnetron is a device which generates Microwaves. . It converts electrical energy into Microwaves.. Construction and Working : . It is constructed of a . Vaccum. tube having two electrodes. . It comprises a cylindrical diode working as a cathode, an anode, and a magnet that generates a magnetic field aligned with the cathode. 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 .