| the quotient of dD by dt, where dD is the increment of absorbed dose in time interval dD
Note – The SI unit of absorbed dose rate is joule per kilogram and second, whose special name is gray per second. The earlier special unit of absorbed dose rate, still in temporary
use, was the rad per second.
1 Gy • s = 100 rad • s−1 = 1 J kg −1 • s−1