Radiation emitted in Gaseo is Explosions. 



87 



Table II, 



Rate at which Radiation is received from 13 per cent, mixtures 

 of Coal-gas and Air per sq. cir. . per sec. through plates of 

 Fluorite, Quartz, and Glass. 



Time fro 



L1IXIO 11UIJ 



ignition, 

 (sees.) 



j. luean gas 

 temp. 

 (° C. abs.) 



Fluorite. 



Quartz. 



Glass. 



Quartz 

 Fluorite' 



Glass 

 Quartz 



007 

 009 



. 2090 

 (max. temp.) 

 2000 



4-05 

 3-3 



2-05 

 1-70 



1-35 

 11 



051 

 051 



066 



063 



0-17 



1800 



20 



10 



0-65 



0-50 



0-65 



0-24 



1600 



115 



0-55 



0-35 



0-48 



064 



033 



1400 



0-65 



0-3 



0-2 



0-46 



0-67 



0-55 



1200 



0-37 



o-i 



nearly zero 



0-27 



— 



0-85 



1000 



0-25 



nearly zero 



nearly zero 



nearly zero 







Table III. 



Rate at which Radiation is received from 10 per cent, mixtures 

 of Coal-gas and Air per sq. cm. 1 per sec. through plates of 

 Fluorite, Quartz, and Glass. 



Time from Mean gas 

 temp. 

 (° C. abs.) 

 1600 



ignition. 

 (sees.) 

 0-15 

 0-18 



0-23 

 0-4 

 0-57 

 086 



1710 

 (max. temp.) 



1600 



1400 



1200 



1000 



Fluorite. 



T85 

 17 



1-25 



0-7 

 0-4 

 03 



Quartz. 



0-85 

 0-75 



05 



025 



0-1 



Glass. 



0-55 

 0-45 



03 



045 



nearly zero 



Quartz 

 Fluorite* 



0-46 

 0-44 



0-40 

 0-36 

 0-25 



Glass 

 Quartz 



0-65 



0-60 



60 

 60 



nearly zero nearly zero nearly zero — 



6. It will be noticed that the ratio of the emission 

 through glass to that through quartz is pretty much the 

 same for all temperatures and for all mixtures'*. This is 



* It should be noted that the proportion of C0 2 to water vapour in 

 the exploded mixtures is the same for all mixture strengths. Tne 

 15 per cent, mixture after explosion consists of 8 - 5 per cent, of C0 2 , 

 20 per cent, of water vapour, and the remainder almost entirely nitrogen 



and a little excess oxygen. 



