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.
Narcotics are any substances that bind to opiate receptors of brain, and are addictive drugs, that reduce pain, may alter mood and behavior, and usually induce sleep or numbness. Per the DEA website, a narcotic is a medication, derived from the poppy plant (or a synthetic substance closely related to opium), and used to treat pain.