Gray (radiation) - MSN Encarta

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Gray (unit) - Wikipedia, the free encyclopedia
One gray is the absorption of one joule of radiation energy by one kilogram of matter . Note that, for x and gamma rays, these are the same units as the sievert (Sv)
Gray (disambiguation) - Wikipedia, the free encyclopedia
Gray may refer to: a neutral color, also spelled grey; Gray (horse) , a grey horse, sometimes mistaken for a white horse; Gray (unit) , the SI unit of energy for absorbed dose of ...
gray - Definitions from Dictionary.com
Definitions of gray at Dictionary.com. ... 8. indeterminate and intermediate in character: The tax audit concentrated on deductions in the gray area between purely personal and ...

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Gray (radiation), international unit of measure of absorbed radiation dose. Used in the International System of Units, it is abbreviated Gy. The gray replaces the rad (1 Gy equals 100 rad) and is defined as the dose absorbed when 1 kilogram of matter absorbs 1 joule of ionizing radiation. Different types of radiation cause different amounts of damage for the same absorbed dose. The international unit of dose equivalent is the sievert.

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