\(\dot{X} = \frac{dX}{dt}\), where \(X\) is the increment of exposure during time interval with duration \(t\).
n3:latexSymbol
\(\dot{X}\)
n3:plainTextDescription
"Exposure Rate" expresses the rate of charge production per unit mass of air and is commonly expressed in roentgens per hour (R/h) or milliroentgens per hour (mR/h).