A simple example of a polarized transverse wave is vibrations traveling along a taut string (see image); for example, in a musical instrument like a guitar string. Depending on how the string is plucked, the vibrations can be in a vertical direction, horizontal direction, or at any angle perpendicular to the string.
Commission on Narcotic Drugs considers future of drug control. 14 March 2008 - The 51 st session of the annual Commission on Narcotic Drugs (CND) wrapped up today.
When used in a legal context in the U.S., a narcotic drug is simply one that is totally prohibited, or one that is used in violation of governmental regulation, such as codeine or morphine. From a pharmacological standpoint it is not a useful term, as is evinced by the historically varied usage of the word.or example, although federal law classifies both cocaine and amphetamine as Schedule II drugs, the penalty for possession of cocaine is greater than the penalty for possession of amphetamines because cocaine, unlike amphetamines, is classified as a narcotic. Both cocaine and amphetamines are stimulants.