(from the article `photography, history of`) The example of the German picture magazines was followed in other parts of Europe and in the United States. One was the short-lived Vu, established ... Found on http://www.britannica.com/eb/a-z/v/38
1) Short for the term Volume Unit (a unit that is designed to measure perceived loudness changes in audio). 2) A meter that reads audio voltage levels in or out of a piece of equipment and is designed to match the ear's response to sudden changes in level.
Found on http://www.encyclo.co.uk/local/20447