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    Thread: Recommending two maps

    1. #1
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      Default Recommending two maps

      1) Those interested in recently (?) measured radiation levels (at different distances from the Fukushima reactors in Japan) should see:

      *http://www.meti.go.jp/earthquake/nuc...nitor02_01.pdf *
      (dose levels measured 1 meter above the ground)

      Please note that the second link has been removed because it may harm your computer. Thank you.
      (dose levels measured 1 centimeter above the ground)

      Note that the color code is explained near the lower left corner of each dispay. Radiation levels are expressed in micro-Sieverts per hour. [The 10 micro-sieverts, for example, is the same as 0.01 mSv, etc. And 10 micro-Sievert/hour is the same as 0.24 mSv/day, or 7.2 mSv/month.]

      2) How significant these doses are? The effect of penetrating radiation on a person depends on the dose received. The common unit of dose is Sievert (Sv). Smaller doses are expressed in milliseverts (mSv) or microseveret.

      A dose of 10 Sv will most likely results in death, within a day or two.
      5 Sv would kill about 50% of exposed people.
      2 Sv can also be fatal, especially without prompt treatment.

      0.25 Sv = 250 mSv is the limit for emergency workers in life-saving operations.
      0.10 Sv = 100 mSv dose is clearly linked to later cancer risks.
      0.05 Sv = 50 mSv is the yearly limit for radiation workers.

      0.004 Sv= 4 mSv typical yearly dose due to natural radiation (cosmic rays, etc).
      0.003 Sv= 3 mSV typical dose from mammogram

      Ludwik Kowalski (see Wikipedia)
      .
      Last edited by Narnia; September 4th, 2011 at 07:20 PM. Reason: removal of potentially harmful link ... member may be unaware of harmful link.
      Ludwik Kowalski, author of a free ON-LINE book entitled “Diary of a Former Communist: Thoughts, Feelings, Reality.” Google will provide the clickable link. Or see below.
      h*ttp:*//csam.montclair.edu/~kowalski/life/intro.h*tml (but remove * after pasting)
      It is a testimony based on a diary kept between 1946 and 2004 (in the USSR, Poland, France and the USA)

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