Archive of Collections

Details and Image

TypeModel No.MakerCountryConstruction
DateScale LengthArea of Use
Radioisotope Decay Calculator - GEZ-4364
Perrygraf for General Electric "Pleasonton, CA, U.S.A."
c. 19708 cm x 21.2 cmRadioisotopes

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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