In this lab you will be looking at the amount of radiation you detect from a radioactive source as a function of time. When you start this lab, you will have a freshly made sample of Bi-211. I suggest collecting data in 10 s intervals that are spaced 60 s apart. That is you collect data for the first 10 s and then don't collect again until the 60 - 70 s mark .

When you are ready to start the lab, click on the begin button