to NEETS, Module 14, Introduction to Micro-electronics.ELECTROMAGNETIC RADIATIONHAZARDSThe electromagnetic spectrum encompasseseveryday-use items from commercial power to medicalx-rays, as shown in figure 3-2. In this area we willdiscuss radio frequency radiation and optical radiation.R-F HAZARDS TO PERSONNELRadiation from antennas fed by high powered rftransmitters has the potential for injuring personnel whohappen to be near the radiating antennas. Transmittersaboard ships, on aircraft, at shore stations, andmicrowave ovens found both aboard ships and ashoreare potential sources of harmful radiation. At somefrequencies, exposure to excessive levels of rf radiationwill not produce a noticeable sensation of pain ordiscomfort to give warning that injury may beoccurring. Radiated rf energy can also result in rf burnswhen metal objects with induced high rf voltage levelsare touched.An rf burn is the result of current flowing throughthe body when parts of the body are in contact with rfvoltages induced in conductive objects. The currentproduces heat as it passes through the resistance of theskin. The effect of the heat on a person ranges fromwarmth to painful burns.LASER HAZARDS TO PERSONNELThe word laser is an acronym for LightAmplification by Stimulated Emission of Radiation. Alaser is basically a concentrated beam of opticalradiation. As technology increases, the use of laserequipment will increase for purposes ranging fromindustrial to medical to military (both offensive anddefensive).The effects that lasers can have on your eyes rangefrom inflammation of the cornea to corneal burn and onyour skin from accelerated skin aging to skin burn.If you are involved with the use of lasers at yourcommand, be sure to follow all safety precautions forthe class of laser in use and all directions given to you byyour command’s Laser Safety Officer. Lasers will bediscussed in greater detail in volume 9 of this series.We recommend that you become familiar with thecontents of NAVSEA OP 3565/NAVAIR 16-1-529,Technical Manual, Electromagnetic Radiation Hazards(U), (Hazards to Personnel, Fuel, and OtherFlammable Material) (U). We also recommend that youFigure 3-2.—Electromagnetic spectrum.3 - 6
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