200 



BIOLOGICAL EFFECTS OF RADIATION 



VIOLET BLUE GREEN YELLOW ORANGE RED 



10 

 9 

 8 



> 7 



> 



t 6 



in 



z 



UJ 



<n 5 



uJ 



> 



O 



lO 



8 



t. 7 



10 



z 



Ul 



tn 



m 

 > 



UJ 



a 



300 



•400 



500 600 



WAVE LENGTH 



70O 



eOOM/X 



Fig. 33. — Visibility and special detectors: VX — visibility; dotted curve — sensitivity of 

 Weston photronic cell + heat resisting heat absorbing dark, 2.82 mm. thickness + Noviol 

 O, 16 mm. thickness (Corning filters). Color evaluation: Full-line curves — 1922 standard 

 observer: B — blue; G — green; R — red; sensitivity reduced to same maximum. Dotted 

 curves — corresponding special detectors: Blue — heat resisting lantern blue, 3.0-mm. thick- 

 ness -|- Noviol O, 3.0-mm. thickness -|- copper chloride }/2 N va. 1.0-cm. cell; Green — signal 

 green* + signal yellow, thin* 4- copper chloride Ho N '\n 1.0-cm. cell; Red — signal 

 yellow, thick* -|- heat resisting heat absorbing dark, 2.82-mm. thickness -f- copper chloride 

 3^10 N in 1.0-cm. cell. 



* Manufacturer does not specify thickness, due to variability of color with melt. 



