Vintage & Estate. The gift of a Diamond Ring has, for centuries, been the consummate metaphor for love and enduring commitment. Though your options are endless, few jewelers are conscientious of quality standards. Every Margulis Diamond is of the finest cut, color, and clarity for the investment put forth. Call us today at 503.227.1153.
The decay of radioactive elements occurs at a fixed rate. The half-life of a radioisotope is the time required for one half of the amount of unstable material to degrade into a more stable material. For example, a source will have an intensity of 100% when new. At one half-life, its intensity will be cut to 50% of the original intensity.
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.