Essay on Applications of Magnetism in the Computer...

Many aspects of Computer Engineering are affected by the study of Magnetism. Unlike many fields of study, however, magnetism can be both helpful and harmful when it comes to many of the devices used in computers. One of the most basic examples of the use of magnetism in conjunction with computers is the hard drive. Nowadays, hard drives are used in many different consumer electronics products from computers to mp3 players to game consoles. A hard drive is used to store large amounts of data, and also to retrieve stored data quickly. A hard drive works by storing data in the form of tiny magnetic domains onto a magnetic ‘platter’. The platter is made up of thousands of tiny magnetic domains. Within each domain, a northern charge†¦show more content†¦In a CRT monitor, a piece of heated filament plays the part of the cathode. As it is heated inside the vacuum present inside the tube, it gives off a stream of electrons, which are attracted by a positive anod e. The anode focuses and accelerates the stream of electrons towards the front of the display. The stream of electrons is steered by two copper coils – one to steer the electrons vertically, and the other to adjust their horizontal trajectory. These coils create an electromagnetic field which adjusts the path of the electron towards the front of the screen. The front of the tube is coated with phosphors which glow then struck by an electron. To display an image, the beam starts in the upper left corner, and paints from left to right. Once the beam reaches the edge of the screen, it travels all the way back to the left side, down a pixel, and starts over. The different shades of colors are created by changing the intensity of the beam, giving you intensities varying from white to black. When you attach a magnet to the screen, it attracts the beam of electrons, and can cause it to hit the wrong phosphor, displaying distortions in both color and picture. Even when you r emove the magnet, sometimes the distortion on the screen will stay, giving you a veritable rainbow of mismatched colors. The reason behind this is that even though the magnet was only attached for a short period of time, that period of time was enough to give a slight magnetic charge toShow MoreRelatedModern Potentials And Applications Of Ferrofluids1252 Words   |  6 Pagesthe modern potentials and applications of ferrofluids? Ferrofluids have current applications in a variety of fields and continue to have potentials for further advancements in others. With research of the first ferrofluid in 1963 by Steven Papell with N.A.S.A., ferrofluids have been used to provide advancements in the field of technology. 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