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SECURITY INFORMATION
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zero. p = material density; a" air density at zero time (1.15 g/liter).
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Fig. 4.1—~Beta-densitometer record, Ivy Mike. Nov. 1, 1952; Station 690.02; 23,219 ft from ground
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UPPER. EDGE OF ZERO. BETA SIGNAL TRACE
H*90.80 SEC. 5
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"<” N“UPPER. EDGE OF ZERO BETA SIGNAL TRACE
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DEFLECTION
VOLTAGE OR
DETECTOR
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