The term half-life is one we apply to radioactive materials to talk about how quickly they decay. The half-life is the time it takes for half of a given sample of the unstable substance (whatever it may be) to undergo radioacitve decay.
Harmony [har-mo-ny]â² as a girls' name (also used less regularly as boys' name Harmony) is pronounced HAR-mon-ee. It is of Latin origin, and the meaning of Harmony is unity, concord. A new age name. Mythology: Harmonia was the Greek goddess of order and daughter of Aphrodite.
Kelvin /kel-vin/ [2 sylls.] as a boys' name is pronounced KEL-vin. It is of English origin, and the meaning of Kelvin is friend of ships. Also possibly a place name referring to a river.Kreatif forms: Keivin, Kelvinna, Kelvinne.elvin is a very prominent first name for males (#358 out of 1220, Top 29%) and a slightly less prominent surname for both adults and children (#89172 out of 150436, Top 59%). (2000 U.S. Census). Charted below is the baby name popularity of Kelvin for boys.