In fact, the kilogram is the only base unit still defined by a physical object. The International Bureau of Weights and Measures (BIPM) keeps the world's standard kilogram in Paris, and all other weight standards, such as those of Britain and the United States, are weighed against this standard kilogram.
Unterluss, Germany: tourism, information and visitor reviews. Unterluss is situated in Germany, in the Niedersachsen region where it is within Celle and the local Unterluess area. It is also an administrative centre for the local region.
Not to be confused with Freiburg. For other uses, see Freiburg (disambiguation). Freiberg (German for free for mining activities) is a university and mining town in the Free State of Saxony, Germany. It is a so-called GroÃe Kreisstadt (large county town) and the administrative centre of Mittelsachsen district.