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EDISON ECLIPSED. Light emitted by an atomic 

 bomb covers all portions of the spectrum — light 

 visible to man plus ultraviolet and infrared light. 

 During the initial flash lasting for a few millionths 

 of a second the total quantity of light emitted is 

 so great as to far exceed what would be produced 



if all the electric light bulbs ever manufactured, 

 from Edison's time to the present, were amassed 

 and turned on simultaneously. The flash was so 

 bright that it could have been readily detected by 

 a man on the moon. Timing and aiming the cam- 

 eras required great technical skill. 



