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Model No.
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Country
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Date
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Area of Use
Linear
Radioisotope Decay Calculator - GEZ-4364
Perrygraf for General Electric
"Pleasonton, CA, U.S.A."
Plastic
c. 1970
8 cm x 21.2 cm
Radioisotopes
Notes:
1) Used to determine the fraction of the source activity that remains after a specified period of time has elapsed. 2)The back of the calculator gives the half-lives for a large number of radionuclides.
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