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・Sievert

 The unit of the dose equivalent of the radioactive rays of the International System of Units(SI).


・Dose equivalent
    (Dose equivalent)＝(Absorbed dose)×(Quality factor)


・Absorbed dose
    The amount of radiation energy absorbed per unit mass.


・Quality factor
  Even if it is the same absorbed dose, The degree of human body impact by the kind of radioactive rays is different.It is the correction factor that express degree of the impact.

From the above, if the dose equivalent is same, the degree of human body impact is same. Even if any kind of radiation and any energy of radiation, degree of human body impact is same in same dose equivalent.The unit of the dose equivalent is sievert.

＜Link to related page.＞
  ・Impact on human body by the radiation quantity.
  ・Sievert ⇔ Gray Radiation measurement value conversion tool.
  ・Sievert ⇔ Becquerel Radiation measurement value conversion tool of sake of the safe evaluation.
  ・Kind of radiation.
  ・Radiation