14 Petavel, High-Press?ire Explosions. 



TABLE II. 



See Fig. 4 {Plate 10), and Fig. 5 (Film 38, Explosion No. 175). 

 Spherical Enclosure, 4" diameter. 

 Capacity, 55i'9i c.c. = 0*0195 cub. ft. 



Temperature of Enclosure before firing 2 [" C. 



„ ,, after products of combustion had 



cooled 27"' C. 



Initial Pressure... ... 74'38 Atms. ~- 1,094 lbs. per sq. inch. 



Ratio of Air to Gas ... ... ... =571 



Maximum ExplosivePressure654-2 Atms. ^ 9,6 18 lbs. per sq. inch. 

 Maximum Temperature ... ... =2 483''C. 



Ratio of Maximum Explosive 

 Pressure to Initial Pres- 

 sure =8-8 



Residual Pressure ... 58-98 Alms. = 867 lbs. per sq. inch. 



Analysis of Residue : 

 Carbon dioxide ... ii"2% 



O.xygen 20% 



Nitrogen 86-8% 



ioo-o% 



