The gray or Gy is the official SI unit for absorbed dose which measures the amount of ionizing radiation that has been absorbed by any material. However, Gy can be used to measure any form of radiation except for the biological effects of the different forms of radiations. Gy is measured in joules per kilogram or J/kg. Before the establishment of Gy as the official SI unit for absorbed dose, the non-SI unit radiation absorbed dose or rad was used. One gray is equivalent to one hundred rads or 1 Gy = 100 rad.
The following table shows radiation quantities in SI and non-SI units.
||Roentgen Equivalent Man
Gray Unit Converter
For Further Reading
- ↑ U.S.NRC (06, 21, 2016). Gray (Gy) [Online]. Available: http://www.nrc.gov/reading-rm/basic-ref/glossary/gray-gy.html
- ↑ OCW.MIT, Lecture Notes, “Electromagnetic Radiation”, Fall 2004. [Online]. Available: http://ocw.mit.edu/courses/nuclear-engineering/22-55j-principles-of-radiation-interactions-fall-2004/lecture-notes/intro_absorb_dos.pdf
- ↑ U.S.NRC(06, 21. 2016). Rad (radiation absorbed dose) [Online]. Available: http://www.nrc.gov/reading-rm/basic-ref/glossary/rad-radiation-absorbed-dose.html
- ↑ NIST. (2016, February 10). Chapter 5. Guide to the SI, Units Outside the SI [Online]. Available: http://www.nist.gov/pml/pubs/sp811/sec05.cfm
- ↑ NIST. (2016, February 19). Chapter 4. Guide to the SI, The Two Classes of SI Units and the SI Prefixes [Online]. Available: http://www.nist.gov/pml/pubs/sp811/sec04.cfm