About UsTechnology is convenient. Effects are inconvenient. Electromagnetic radiation consists of waves of electric and magnetic energy moving together (i.e.,radiating) through space at the speed of light.Radio Waves and microwaves emitted by transmitting antennas are one form of electromagnetic energy.They are collectively referred to as "radiofrequency"or"RF"energy or radiation. The most important use for Rf energy is in providing telecommunications services.Radio and television broadcasting,cellular telephones,personal communications services(pcs),pagers,cordless telephones,business radio,radio communications for police and fire departments,amateur radio,microwave point-to-point links and satellite communications are just a few of the many telecommunications applications of RF energy. Biological effects can result from exposure to RF energy.it has been known for many years that exposure to very high levels of RF radiation can be harmful due to the ability of RF energy to heat biological tissue rapidly.Tissue damage in humans could occur during exposure to high RF levels because of the body's inability to cope with or dissipate the excessive heat that could be generated.The quantity used to measure the rate at which RFenergy is actually absorbed in a body is called the "Specific Absorption Rate"or "SAR." it is usually expressed in units of watts per kilogram (W/kg)or milliwatts pergram(mW/g). The most vulnerable to the radiations are pre-adolescent children.pregnant women and their unborn babies,patients carrying pace makers and ultimately the human brain. Dr.APJ Abdul Kalam,Formar President fo india and Eminent Nuclear Scientist said, "increased use fo radio frequencies because of expansion in the communication network (mobiles,WiFi,WiMAX,Bluetooth,WIL,Walkie Talkies,TV,FM Stations Radars, Mircrowave Owens,etc.) has brought in concerns.Due to this,the electromagnetic waves are getting populated and leading to an alarming increase in health hazards. |