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.
Codeine meets the medical definition of a narcotic. Narcotics are a certain family of medications that slow brain activity. These are usually used to treat pain or as anesthetics. Narcotics can also be used to treat diarrhea or coughing. Narcotics can be fatal or have severe adverse effects in large doses.