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.
Depending on the particular substance involved, a half-life may be significantly shorter or longer than half of the substance's full period of activity. The concept of a half-life has been adopted by fields outside of science, such as marketing and finance.