MR. W. T. DAVID ON THE RADIATION IN 



800 



400 -2 







J -4 -S -6 -7 



T/me after Ignit/on - seconds. 



Fig. G. 



9 



1-0 



3'6-per-cent. contraction of volume which occurs in the combination of a 15-per-cent. 

 mixture. 



Fig. 7 shows these radiation curves differentiated, the rates of radiation in calories 

 per sq. cm. per second being plotted against the mean absolute temperatures of the 

 gas as was done for the 9'8-per-cent. mixtures in fig. 5. 



At the moment of maximum pressure the rate of receiving heat by radiation at the 



5-0 



4-0 





W/x/ures. ( firs/- s, 

 * *j 



^4oo 2200 2000 isoo teoo tioo 



Gas Jf/nfitrafure C aiso/uk. 

 Fig. 7. 



1SOO 1000 



