The SPC does not include forwarding services to a new address. When a package is not deliverable or refused by the occupant, a SPC will attempt to locate a new address through publicly available address services.
T1 = Hours to produce the first unit. b = (Log of the learning rate/Log 2) = Slope of the learning curve. If the learning rate for a given operation is 80%, and the first produced unit took 1.000 hours, the hours needed for the thirteenth unit can be calculated as follows: TN = T1(Nb).
For any particular radioisotope the count rate and time will be different but the shape of the curve will be the same. The easiest way to measure the half-life from the graph is to. 1. Read the original count rate at zero days. On our graph the reading is 1640 counts. 2. Go down to half the original count rate (820 counts) and draw a horizontal line to the curve. Then draw a vertical line down from the curve. You can read off the half-life where the line crosses the time axis. On our graph the half-life is 20 days.