4 ms·
"For X-rays and gamma rays, these are the same units as the sievert (Sv)." http://en.wikipedia.org/wiki/Gray_(unit) http://en.wikipedia.org/wiki/Gray_(unit) A
by frevd 16y ago
"For X-rays and gamma rays, these are the same units as the sievert (Sv)."
http://en.wikipedia.org/wiki/Gray_(unit) http://en.wikipedia.org/wiki/Gray_(unit)
ADD:
"Sievert = Biological effectiveness factor unique to the type of radiation * Gray"
http://www.hicare.jp/en/09/hi03.html http://www.hicare.jp/en/09/hi03.html
- davepm 16y agoTrue, but Gray is for measurement of absorption by ANY material, Sievert is for measurement of absorption by biological material, so you would also need to apply the tissue weighting factor to the gray/hr measurement.