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.
Ratchet is not just a song. Ratchet is a movement, Mandigo said. The term was first used in Lava House's 1999 single Ratchet as a derogatory term to describe someone as jealous, trashy, having little to no morals or someone who claims to be something they're not.atchet is not just a song. Ratchet is a movement, Mandigo said. The term was first used in Lava House's 1999 single Ratchet as a derogatory term to describe someone as jealous, trashy, having little to no morals or someone who claims to be something they're not.