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Drad (other)
Drad may refer to: * abbreviation of decirad (drad), a unit of radiation dose * abbreviation of deciradian (drad), a unit of angle * DraD, a class of bacterial adhesins DRAD may refer to: * DRAD, or EFEMP1, a protein * Defending Rights & Dissent See also * Drat (other) * Dard (other) {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Decirad
The rad is a unit of absorbed radiation dose, defined as 1 rad = 0.01 gray (unit), Gy = 0.01 J/kg. It was originally defined in Centimetre gram second system of units, CGS units in 1953 as the dose causing 100 ergs of energy to be absorbed by one gram of matter. The material absorbing the radiation can be human tissue, air, water, or any other substance. It has been replaced by the gray (unit), gray (symbol Gy) in SI derived units, but is still used in the United States, although this is "strongly discouraged" in Chapter 5.2 of the ''Guide to the SI'', which was written and published by the U.S. National Institute of Standards and Technology. However, the numerically equivalent SI unit submultiple, the centigray (symbol cGy), is widely used to report absorbed doses within radiotherapy. The roentgen (unit), roentgen, used to quantify the Exposure (radiation), radiation exposure, may be related to the corresponding absorbed dose by use of the F-factor (conversion factor), F-factor. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |