----Electromagnetic radiation   Invisible killer Facing 21st Century Disasters   ----Hanjun.Wu  University of Liverpool
1 .Definition of Electromagnetic radiation <ul><li>a form of energy that exhibits wave-like  </li></ul><ul><li>behavior tr...
2. Sources Facing 21st Century Disasters   computers 、 microwave oven 、 cell phones 、  remote control and so on. Artificia...
3. Damage <ul><li>heating effect and non-thermal effect </li></ul><ul><li>derives energy to human, making blood 、 lymphati...
In 1998, the world health organization lists five impacts   Facing 21st Century Disasters   Female endocrine even menstrua...
4. The increasing Electromagnetic radiation Examples: By the end of 2010, the global Internet users : 2.08  billions  cell...
5. Solution: reduce & avoid  <ul><li>Electromagnetic radiation damage human in an invisible way  </li></ul><ul><li>Simple ...
1.cell phones <ul><li>In standby mode, try to distance. </li></ul><ul><li>never keep close to cellphone when sleeping </li...
2.computers <ul><li>ventilate the indoor  </li></ul><ul><li>put  cacti beside  </li></ul><ul><li>wash face , tea or relax ...
3.other appliance <ul><li>Distance induction cooker at least 20 center metre  </li></ul><ul><li>keeping away from televisi...
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[Challenge:Future] Invisible killer

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[Challenge:Future] Invisible killer

  1. 1. ----Electromagnetic radiation Invisible killer Facing 21st Century Disasters ----Hanjun.Wu University of Liverpool
  2. 2. 1 .Definition of Electromagnetic radiation <ul><li>a form of energy that exhibits wave-like </li></ul><ul><li>behavior travelling through space </li></ul><ul><li>has both electric and magnetic field components which oscillate in phase perpendicular to each other and perpendicular to the direction of energy propagation. </li></ul><ul><li>substance really existed while it is invisible </li></ul>Facing 21st Century Disasters
  3. 3. 2. Sources Facing 21st Century Disasters computers 、 microwave oven 、 cell phones 、 remote control and so on. Artificial Lightning, sunspot activity and cosmic rays Natural
  4. 4. 3. Damage <ul><li>heating effect and non-thermal effect </li></ul><ul><li>derives energy to human, making blood 、 lymphatic fluid and cell bioplasm changed , thus disturbing the function of the body </li></ul>Facing 21st Century Disasters
  5. 5. In 1998, the world health organization lists five impacts Facing 21st Century Disasters Female endocrine even menstrual disorders chaos Children growth, bone marrow development, blurred vision , retina fall off, liver haematopoiesis affect Maternal Abortions , infertility and teras induce reproductive system, nervous system and the immune system damage Cardiovascular disease, diabetes and cancer mutations incentive
  6. 6. 4. The increasing Electromagnetic radiation Examples: By the end of 2010, the global Internet users : 2.08 billions cell phone user: 5.28 billions Facing 21st Century Disasters
  7. 7. 5. Solution: reduce & avoid <ul><li>Electromagnetic radiation damage human in an invisible way </li></ul><ul><li>Simple ways to reduce : keep away from the radiation </li></ul><ul><li>Measurement: Radio </li></ul>Facing 21st Century Disasters
  8. 8. 1.cell phones <ul><li>In standby mode, try to distance. </li></ul><ul><li>never keep close to cellphone when sleeping </li></ul><ul><li>Before answering ,distance the cellphone first and then make it close to your ear. </li></ul><ul><li>use less and never keep calling surpluss half an hour. </li></ul>Facing 21st Century Disasters
  9. 9. 2.computers <ul><li>ventilate the indoor </li></ul><ul><li>put cacti beside </li></ul><ul><li>wash face , tea or relax </li></ul><ul><li>inregulate the body function. </li></ul><ul><li>metal beside crease radiation. </li></ul><ul><li>the back emerge radiation most </li></ul><ul><li>used computer double the radiation , too Screen brightness. </li></ul>Facing 21st Century Disasters
  10. 10. 3.other appliance <ul><li>Distance induction cooker at least 20 center metre </li></ul><ul><li>keeping away from television at least 2 metre is safe. </li></ul><ul><li>...... </li></ul><ul><li>the siple way to reduce is to try to keep them away </li></ul><ul><li>moving a living radio around the aplliances when nosie emerge </li></ul>Facing 21st Century Disasters
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