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・ Orders of magnitude (length)
・ Orders of magnitude (less than one cubic millimetre)
・ Orders of magnitude (luminance)
・ Orders of magnitude (luminous flux)
・ Orders of magnitude (magnetic field)
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・ Orders of magnitude (numbers)
・ Orders of magnitude (one cubic gigametre and greater)
・ Orders of magnitude (one cubic kilometre to one cubic megametre)
・ Orders of magnitude (one cubic megametre to one cubic gigametre)
・ Orders of magnitude (one cubic metre to one cubic kilometre)
・ Orders of magnitude (one cubic millimetre to one cubic metre)
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・ Orders of magnitude (probability)
Orders of magnitude (radiation)
・ Orders of magnitude (resistance)
・ Orders of magnitude (specific energy)
・ Orders of magnitude (specific heat capacity)
・ Orders of magnitude (speed)
・ Orders of magnitude (temperature)
・ Orders of magnitude (viscosity)
・ Orders of magnitude (voltage)
・ Orders of magnitude (volume)
・ Orders of precedence in the People's Republic of China
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・ Orders to Kill
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Orders of magnitude (radiation) : ウィキペディア英語版
Orders of magnitude (radiation)

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 unts of millirems (mrem), where 1 mrem equals 1/1000 of a rem and 1 mrem equals 0.01 mSv. Light radiation sickness begins at about 50–100 rad (0.5–1 gray (Gy), 0.5–1 Sv, 50–100 rem, 50,000–100,000 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.

== References ==


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