A good one, well cared-for, can last for many years.Irish pipers often must master the art of reed making, as well as reed adjustment and maintenance. Trust me, this is no simple task. In conclusion, each of the traditions of bagpiping is replete with a body of repetoire, technique and playing opportunities. Of late, there have been more and more interchanges between the two, as it is quite possible to set Irish melodies on the Scottish chanter, and visa-versa. Bagpipers occupy a somewhat rarified world, inhabited by devotees and connoisseurs, as well as practitioners.
noun, plural: half-lives. (1) Biological half-life, i.e. the period in which the amount of substance inside the living organism is metabolized and eliminated half of its initial amount by normal biological process.
Not all of the atoms of a radioisotope decay at the same time, but they decay at a rate that is characteristic to the isotope. The rate of decay is a fixed rate called a half-life. The half-life of a radioisotope describes how long it takes for half of the atoms in a given mass to decay.Some isotopes decay very rapidly and, therefore, have a high specific activity. Others decay at a much slower rate.he rate of decay is a fixed rate called a half-life. The half-life of a radioisotope describes how long it takes for half of the atoms in a given mass to decay. Some isotopes decay very rapidly and, therefore, have a high specific activity.