page 185 



PLANNED COINCIDENCE, BAKER TEST. These 

 photographs of the Baker Test, subject matter 

 aside, are clear evidence of the accurate timing 

 achieved in the second bomb test. By radio control 

 an Army Air Forces B-17 drone plane has been 

 brought to just the right position above the bomb 

 detonation point, exactly at the instant of detona- 

 tion. Other radio-controlled apparatus has acti- 

 vated the cameras that made these photographs. 

 All such controls were synchronized with the signals 



detonating the bomb itself. Two stages in the de- 

 velopment of the cauliflower are shown. The shock 

 wave and fillet continue to expand, the cauliflower 

 grows, the condensation cloud begins to assume 

 its roughly spherical shape. Shadows cast by low- 

 lying natural clouds form blotches on the explosion 

 cloud below. Size of the target ships (right, above) 

 indicates the height at which these pictures were 

 taken and gives some conception of the magnitude 

 of the burst. 



