Electromagnetic Fields And Its Effects On Human Society Essay

Electromagnetic Fields (EMFs) Its Effects on Human Society: Magnetic Resonance Imaging (MRI) EENG 3303 College of Engineering Department of Electrical Engineering University of Texas at Tyler Houston, TX 29/11/2016 Adrian Acuna Abstract Magnetic resonance imaging (MRI) is a noninvasive medical test that physicians use to diagnose and treat medical conditions. MRI uses a powerful magnetic field, radio frequency pulses and a computer to produce detailed pictures of organs, soft tissues, bone and virtually all other internal body structures. I. Introduction The MRI technique stems from Nikola Tesla’s discovery of rotating magnetic fields, in 1882. However, Tesla’s discovery isn’t the sole building block of MRI technology, in 1937 Isidor Rabi, of Columbia University, discovered nuclear magnetic resonance. This discover showed that an atom’s nucleus will absorb and emit radio waves if they are exposed to strong enough magnetic fields. The first MRI image was developed on July 3rd, 1977 by Dr. Raymond Damadian in New York. Nowadays the world’s most powerful MRI scanner is located at the Magnet Academy and produces a magnetic field of 21.1 Tesla, at a frequency of 900 megahertz. At the present time, the human population is chronically exposed to natural and man-made sources of ionizing and non ionizing radiations, the latter being, for instance, electric and magnetic fields (EMF). Important sources of man-madeShow MoreRelatedCan Cell Phones Harm our Health? Essay962 Words   |  4 Pagescell phones emit 900-1800 MHz radiofrequency electromagnetic fields during calls which effects the protein structures in mice and humans (Eid 573). Therefore, cell phones can be dangerous to humans. Most studies that show that there is no harmful effects from cell phone use are often industry funded (Gandhi 38). 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