Sometimes, the Microsoft Outlook integration is successful but you might not see the users' presence status/presence bubble in Microsoft Outlook. In order to troubleshoot this problem, verify these points:
2. Half-life is the time taken for the count rate to fall to half of its original reading. There are a number of ways to define half-life. Remember one of the above definitions, it may be useful in the exams. An Explanation of Half-life. A radioactive material will have some nuclei that are stable and some that are unstable.
half-life, effective, n the half-life of a radioactive isotope in a biologic organism, resulting from the combination of radioactive decay and biologic elimination. half-life, physical, n the average time required for the decay of half the atoms in a given amount of a radioactive substance.