| 释义 |
Definition of sievert in English: sievert(also Sv) nounˈsiːvətˈsivərt Physics The SI unit of dose equivalent (the biological effect of ionizing radiation), equal to an effective dose of a joule of energy per kilogram of recipient mass. 〔物理〕西韦特单位 Example sentencesExamples - Radiation from a tiny particle of, say, plutonium is averaged over the entire body to give a dosage in units of (milli-) sieverts.
- All doses are expressed as dose equivalents in sieverts (Sv).
- The unit of this weighted dose is the sievert, Sv, and it is termed the equivalent dose.
- The International Commission on Radiological Protection recommends using a nominal risk coefficient of 5% per sievert, which is increased threefold to account for the higher radiosensitivity of infants.
- The potential for radiation to cause biological damage is called the dose equivalent, which is measured in rems or sieverts, where 1 sievert equals 100 rems.
Origin1940s: named after Rolf M. Sievert (1896–1966), Swedish physicist. Definition of sievert in US English: sievert(also Sv) nounˈsēvərtˈsivərt Physics The SI unit of dose equivalent (the biological effect of ionizing radiation), equal to an effective dose of a joule of energy per kilogram of recipient mass. 〔物理〕西韦特单位 Example sentencesExamples - All doses are expressed as dose equivalents in sieverts (Sv).
- Radiation from a tiny particle of, say, plutonium is averaged over the entire body to give a dosage in units of (milli-) sieverts.
- The unit of this weighted dose is the sievert, Sv, and it is termed the equivalent dose.
- The International Commission on Radiological Protection recommends using a nominal risk coefficient of 5% per sievert, which is increased threefold to account for the higher radiosensitivity of infants.
- The potential for radiation to cause biological damage is called the dose equivalent, which is measured in rems or sieverts, where 1 sievert equals 100 rems.
Origin1940s: named after Rolf M. Sievert (1896–1966), Swedish physicist. |