It has a means to accelerate and deflect the electron beam onto the fluorescent screen to create the images. X-rays are produced when fast-moving cathode rays are stopped suddenly. Cathode rays were discovered by Johann Hittorf in the year 1869. The first such application came in 1897 in the form of Karl Ferdinand Braun's oscilloscope. Cathode-ray tubes, also known commonly as CRTs, are widely used in a number of electrical devices such as computer screens, television sets, radar screens, and oscilloscopes used for scientific and medical purposes. Though tubes of this type are used for many purposes, CRTs are most famous for their use in such things as televisions, oscilloscopes, computer and radar displays, and automated teller machines. In ancient times, the cathode ray tubes were used in the beam where the electron was considered with no inertia but have higher frequencies and can be made visible for a short time. Practical Uses for Cathode Rays While many scientists were busy trying to unlock the secrets of cathode rays, others were searching for ways to apply them toward practical ends. 8. J. J. Thomson built a cathode ray tube by putting two cylinders together and sending a voltage through them. Important uses of CRO are measuring voltage, current, frequency, etc. 6. A cathode-ray tube is a device that uses a beam of electrons in order to produce an image on a screen. 7. vii. It is very important part of cathode ray oscilloscope being like heart of whole oscilloscope system. The cathode ray tube (CRT) is a vacuum tube containing one or more electron guns (a source of directed electrons) and a fluorescent screen used to view images. Cathode Ray Tube, TV and Computer Monitors, and the Oscilloscope Introduction. Applications of cathode ray oscilloscope pdf The main cro applications are the observation of the properties of electrical and electronic signals, testing for fluctuation distortion, frequency response of signals, etc. vi. Cathode ray tube is a display device that is used for displaying an electrical signal upon two-dimensional display screens by using principle of fluorescence that is resulted from reaction of electrons and fluorescent chemicals. The most popular commercial application of cathode ray technology is in the form of traditional television sets and computer monitors, although these are being supplanted by newer displays such as OLED. It is a special, electronic vacuum tube that uses a focused electron beam to display images. The device was known as an electrometer. He used Crookes tubes and observed shadows cast on the glowing wall opposite the negative electrode in the tube. Cathode rays ionize the gas through which they pass. A cathode ray tube (CRT) is a type of analog display device. Cathode rays can pass through a thin metal foil like aluminium or gold foil. 5. Used as a most popular television (TV) display. The screen of a cathode ray oscilloscope, the monitor of a computer, are coated with fluorescent substances. Cathode rays can produce heat when they fall on matter e.g. A cathode-ray tube is a device that uses a beam of electrons in order to produce an image on a screen. It was used for sending and measuring electric charges. Uses of Cathode Ray Tube. J.J.Thomson discovered a new subatomic constituent of cathode rays in the year 1897. iv. When the cathode rays fall of the screen pictures are visible on the screen. In 1897 J. J. Thomson discovered that the mass of the particles in cathode rays was 1800 times lighter than hydrogen, the lightest element. Johann Hittorf discovered cathode rays in 1869 using a Crookes tube and noting shadows cast on the glowing wall of the tube opposite of the cathode. Cathode rays can ionize gases. v. When cathode rays strike a solid substance of large atomic weight, X-rays are produced. Cathode rays produce fluorescence when they strike a number of crystals, minerals and salts. This subatomic particle was later named as electrons. Cathode rays produce heat, when allowed to fall on matter. when cathode rays from a concave cathode are focused on platinum foil, it begins to glow. They can cause a chemical change, because they have a reducing effect.