Computer radiation and health

  The showup of interenet and personal computer make a great impact on development of science and of personal life-styles. Nowadays, computer is a very important part of our lives. Teachen uses copmuter is give a lecture，student use computer to study, company staff use computer to make reports and scheme. The social media like twitter, facebook and linkin are used very ofen.  Also ,people can watch movies and play video games on computer as part of their daily entertainment. More and more people sit at compter screens for long times everyday. Will it affect people's health?

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  Computer radiation is a common topic recently. Many people think that it is very scary, However, computer radiation is dont same a the real nuclear radiation. nuclear radiation is caused by radioactive element which keeps disintegration and gives out α, β and γ ray. There rays are very high in energy. But in our lives, natural radiation is every where,tririum in the water we drink and C14in the food we eat. It will not harm our health unless you get a tons of rays.

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  AS natural radiation, computer radiation is a kind of electromagntic radiation, which is everywhere in our lives. This radiation is mainly from monitors. Old monitors may generate ultraviolet ray. But, the LCD monitor will not be a problem. LCD monitors generate rays mainly from the tubes in the back, which is the same as sitting in front of a light tube.
  Therefore, Computer is not really radioactive and dangerous. People feel uncomfortable by siting at computer screen because of tired and long time siting. In conclusion, computer is not dangerous and it helps  the development of our civilization
  Here is Yuhan is post about milk which gives us an idea should we really drink milk.

Reference:
Green Light. 2010. Dangers of computer radiation. revieved from http://green-light.hubpages.com/hub/Dangers-of-Computer-Radiation
EHow Health. 2012.  Negative Effects of Copmuter Radiation. http://www.ehow.com/list_5883106_negative-effects-computer-radiation.html