Used to denote either of two units of dose of ionizing radiation. (see quot. 1955). Obsolete.
| 单词 | θ79533 |
| 释义 | the world > matter > physics > atomic nucleus > measurement of ionizing radiation > [noun] > units of radioactivity > as dosage (4) Sievert unit1945 Used to denote either of two units of dose of ionizing radiation. (see quot. 1955). Obsolete. rem1947 Originally: a quantity of ionizing radiation having the same effect on human tissue as one roentgen of X-rays. Later: the dosage in rads multiplied… rep1947 A unit of absorbed dose of ionizing radiation equal to the quantity that will release the same amount of energy in human tissue as will one… Sievert1977 Used to denote either of two units of dose of ionizing radiation. (Written sievert.) (See quot. 1977.) |
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