Sunday 3 March 2013

3.13 understand the detrimental effects of excessive exposure of the human body to electromagnetic waves and describe simple protective measures against the risks.


  • microwaves: internal heating of body tissue
    • this can damage cells if they overheat
  • infra-red: skin burns
    • skin cells are damaged by overexposiure
  • ultraviolet: damage to surface cells and blindness
    • can damage receptor cells in the retna
  • gamma rays: cancer, mutation
    • can cause cells to change their arrangement causing cancer


People tend to avoid long term low level exposure or short term high level exposure. Sun creames can protect against UV as can sun glasses.
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5 comments:

  1. NSG9826 October 2013 at 11:15

    infra red causes sun burn

    ReplyDelete
  2. Unknown17 April 2014 at 05:28

    to protect from long term exposure to xrays people wear suits with lead becuase lead absorbs x rays

    ReplyDelete
    Replies
    1. Unknown5 January 2016 at 09:51

      such as doctors who perform x-rays daily - they also stand behind a screen while the patient receives an x-ray.

      Delete
  3. Unknown4 June 2016 at 01:31

    how to avoid cancer from gamma rays?

    ReplyDelete
  4. Unknown23 May 2017 at 07:49

    You avoid cancer mainly from gamma rays by either having lead to stop it entering them or if patient they only use quick small bursts of gamma rays to prevent mutation for over exposure

    ReplyDelete

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