GE Radioisotope Decay Calculator (1970s)
|The Radioisotope Decay Calculator was marketed by the General Electric Company. More specifically, the calculator identifies GE's Irradiation Processing operation in Pleasanton California. An ID number, 1M 6/71, would appear to indicate that it was probably produced in the 1970s.|
It only has one purpose, to determine the fraction of the source activity that remains after a specified period of time has elapsed. You simply line up the elapsed time with the nuclide half-life and read the result. To make it a little easier, a number of nuclides are indicated on the half-life scale. The back of the calculator converts time units (e.g., hours to days and days to years) and gives the half-lives for a large number of radionuclides.
Size: ca. 3" x 8.5"
Copyright 1999, Oak Ridge Associated Universities