Magnetism

Discussion C³

Lesson: Magnetism

Because the computer processes information magnetically, it is important not to have other magnets on or near your computer;this might cause a misread. When purchasing speakers for the computer, make sure that you purchase speakers that are shielded; these are made specifically for the computer. One way to tell if your speakers are shielded is to hold them near the monitor screen. If you notice that the monitor is slightly changing color, the speakers are not shielded.

Magnetism is a powerful force holding our universe together. If the earth was not enveloped in a magnetic field to protect it and us from exposure to merciless solar winds and radiation, we would not exist. The earth, also, has a magnetic core with convection columns extending to its surface. According to scientific theorists, earth’s inner core formed by accretion is a rotating sphere of solid metal growing approximately one millimeter per year with dendrite crystalline vortices tumbling and recording its surrounding magnetic field.

The South Atlantic Anomaly near Brazil stretching over a quarter of the earth’s surface is an area where the earth’s magnetic field has weakened. When the one billion dollar Hubble orbits above this area, sensitive instruments aboard are turned off to avoid damage.