The rule is that a sample is safe when its radioactivity has dropped below detection limits. And that occurs at 10 half-lives. So, if radioactive iodine-131 (which has a half-life of 8 days) is injected into the body to treat thyroid cancer, itâll be âgoneâ in 10 half-lives, or 80 days.
The term 'ratchet' has no less than two distinct meanings. As an adjective, it describes a person, usually a woman, or activity, who is out of hand, out of control, generally whack in some way, dirty, ghetto, unattractive, Crucian, or just generally disliked.
fool or idiot--someone behaving in that fashion. Correction: The literal meaning of 'putz' is slang for male genitalia.The English equivalent is d*ck. Though it's origin â¦ al meaning was equivalent to calling someone a penis, which in the old country was a great insulting expletive.t is slang for fool or idiot. In vulgar slang it means Penis. The word itself is Yiddish. So really, its like calling someone a really small penis. Haha!