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Orders of magnitude (radiation)

Comparison of a wide range of radiation dosages From Wikipedia, the free encyclopedia

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Radiation Dosages

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Recognized effects of higher acute radiation doses are described in more detail in the article on radiation poisoning. Although the International System of Units (SI) defines the sievert (Sv) as the unit of radiation dose equivalent, chronic radiation levels and standards are still often given in units of millirems (mrem), where 1 mrem equals 1/1,000 of a rem and 1 rem equals 0.01 Sv. Light radiation sickness begins at about 50100 rad (0.51 gray (Gy), 0.51 Sv, 50100 rem, 50,000100,000 mrem).

The following table includes some dosages for comparison purposes, using millisieverts (mSv) (one thousandth of a sievert). The concept of radiation hormesis is relevant to this table – radiation hormesis is a hypothesis stating that the effects of a given acute dose may differ from the effects of an equal fractionated dose. Thus 100 mSv is considered twice in the table below – once as received over a 5-year period, and once as an acute dose, received over a short period of time, with differing predicted effects. The table describes doses and their official limits, rather than effects.

Absorbed Dosages (D)

Total Absorbed Dosages

More information Dosage Level, Description ...

Effective Dosages (E)

More information Level (mSv), Level in standard form (mSv) ...
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Comparison of Radiation Doses - includes the amount detected on the trip from Earth to Mars by the RAD on the MSL (2011 - 2013).[25][26][27][28]
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