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.
This is a term of varied usage. In medicine, it refers to any substance with the potential to prevent or cure disease or enhance physical or mental welfare. In pharmacology, it means any chemical agent that alters the biochemical or physiological processes of tissues or organisms.In the context of international drug control, drug means any of the substances listed in Schedule I and II of the 1961 Single Convention on Narcotic Drugs, whether natural or synthetic.n the context of international drug control, drug means any of the substances listed in Schedule I and II of the 1961 Single Convention on Narcotic Drugs, whether natural or synthetic.