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.
Bella /bel-la/ [2 sylls.] as a girls' name is pronounced BELL-ah. It is of Italian and Latin origin, and the meaning of Bella is beautiful. Also a short form of Isabel or Isabella (Hebrew) God's promise.Author/politician Bella Abzug; author Belva Plain.Kreatif forms: Bebla, Becla, Belba.ow popular is Bella? Bella is a very prominent first name for females (#1202 out of 4276, Top 28%) and also a very prominent last name for all people (#12883 out of 150436, Top 9%).