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Electromagnetic Radiation & its effect on human

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Electromagnetic Radiation & its effect on human being and its remedy

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Electromagnetic Radiation & its effect on human

  1. 1. A Seminar on “Study of Electromagnetic Radiation & It’s effect on human” Submitted by: Name: Shuvo Saha Roy Institute: KUET Roll: 1003008 Date: 22-09-2014 Year: 4th, Term: 1st
  2. 2. Electromagnetic Pollution  Electromagnetic pollution is due to frequencies below (oscillating slower than) visible light waves. Electromagnetic pollution is everywhere.  Here's a short list of the main culprits:  cell (and other mobile) phones  computers and related equipment  electrical and electronic appliances  radio and TV transmitters  microwave ovens  house-wiring  high and low voltage power lines  information networks  cars, motor cycles, buses, trains, planes.
  3. 3. Low Frequency EMFs  Strong electromagnetic fields (EMFs) of low frequency about 50 to 60 cycles per second (hertz, or Hz). the related electromagnetic radiation (EMR) are harmful.  It is easy to shield a house from electric field generated by nearby power lines but is difficult to provide shielding from magnetic field that they generate.  The magnetic field can be shielded by burring the transmission lines but the cost is very high.  Stray currents and radiating fields can still be emitted from electric wires even if appliances are switched off.  AC electric fields do not disappear when an appliance is switched off, only AC magnetic fields disappear.
  4. 4. HIGH FREQUENCY EMFs  High frequency electromagnetic field is mainly generated by the cell phones, microwaves and antennas.  High frequency EMFs is due to Radio Frequency energy in the frequency range of LF, MF, HF, VHF, UHF or microwaves and is often referred to as radio energy.  The term RF energy is used for all the frequencies between 30 kHz and 300GHz. Following are the biological effects of RF energy:  The biological effect of RF energy depends upon the rate of absorption of energy.  The RF energy heats up the tissues in a similar manner a microwave oven heats the food. It can be dangerous in case of prolong exposure.
  5. 5. Thank You All

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