Also see. Stanley Cup Playoffs from 1918 to present, and Avco Cup Playoffs from 1973-1979. Click on the Year or Lg for playoff results. Click on the Champion or Runner-Up for team roster, statistics, and leaders.lso see. Stanley Cup Playoffs from 1918 to present, and Avco Cup Playoffs from 1973-1979. Click on the Year or Lg for playoff results. Click on the Champion or Runner-Up for team roster, statistics, and leaders.
The rate of. decay is a fixed rate called a half-life. The half-life of a radioactive isotope refers to the amount of time. required for half of a quantity of a radioactive isotope to decay. Carbon-14 has a half-life of 5,730 years, which means that if. you take one gram of carbon-14, half of it will decay in 5,730. years. Different isotopes have different half-lives.
The rate of decay is conveniently expressed in terms of an isotope's half-life, or the time it takes for one-half of a particular radioactive isotope in a sample to decay. Most radioactive isotopes have rapid rates of decay (that is, short half-lives) and lose their radioactivity within a few days or years. Some isotopes, however, decay slowly, and several of these are used as geologic clocks. Dating rocks by these radioactive timekeepers is simple in theory, but the laboratory procedures are complex. The numbers of parent and daughter isotopes in each specimen are determined by various kinds of analytical methods.