LIGHT CURVES OF FLUORESCENCE 



1059 



NCIDENT INTENSITY, erg/cm'= sec. 



Fig. 28.39. Fluorescence intensity of diatoms 

 as function of light intensit}' at two temperatures 

 (Wassink and Kersten 1945). 



14 



12 



§ '0 



uj 8 

 o 



UJ 



o 



UJ 



cc 

 o 



3 



6- 



1% Thiosulfate, pH 6 3 



o 29° C. 

 A 195° 

 a 10 5° 



12 



10 



4 - 



2 - 



15% Hydrogen, pH 7.6 



V 35° C 



o 29° 



A 23° 



a 16° 



^p*' 



INCIDENT INTENSITY, erg/cm^ sec 



Fig. 28.40. P'luorescence curves of Chromatium at different temperatures (after 

 Wassink, Katz and Dorrestein 1942). (5% CO2.) 



