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Fig. 6. [[image - cross section drawing of the smaller chamber]]

Fig. 7. [[image - black & white photograph of the chamber with the medium length nozzle]]

Fig. 8. [[image - black & white photograph of the chamber with the medium length nozzle taken apart]]

Fig. 9. [[image - black & white photograph of the chamber with the long nozzle]]

Fig. 10. [[image - black & white photograph of the apparatus used with the ballistic pendulum to determine the average velocity of ejection of the small chamber. Chamber (C), Plank (B), Smoked glass strip (G), Steel rod (S)]]