190 RADIATION BIOLOGY 



Table 3-15. Spectral Absorbance Index of Liquid Water at 20°C 



* The absorbance index a is defined by the formida 



ab = - log T = - log I/Io, 



where b is the path length in centimeters, T is the transmittance, h is the relative 

 intensity of the incident beam, and / is the relative intensity of the transmitted beam. 



t Absorption minima. 



X Absorption maxima. 



