A viscometer (also called viscosimeter) is an instrument used to measure the viscosity of a fluid. For liquids with viscosities which vary with flow conditions, an instrument called a rheometer is used. Viscometers only measure under one flow condition. In general, either the fluid remains stationary and an object moves through it, or the object is stationary and the fluid moves past it. The drag caused by relative motion of the fluid and a surface is a measure of the viscosity. The flow conditions must have a sufficiently small value of Reynolds number for there to be laminar flow. A...

The American mink (Neovison vison) is a semi-aquatic species of Mustelid native to North America, though human intervention has expanded its range to many parts of Europe and South America. Because of this, it is classed as Least Concern by the IUCN. Indigenous names *Cree: Sang-gwiss, Shakzuashew or Atjackasheiv *Ojibwe: Shang-gwes'-se *Chipewyan: Tel-chu'-say *Ogallala Sioux: Lo-chin'-cha *Yankton Sioux: Doke-sesch Evolution As a species, the American mink represents a more specialised form than the European mink in the direction of carnivory, as indicated by the more developed struc...

The pomelo (Citrus maxima or Citrus grandis) is a crisp citrus fruit native to Southeast Asia. It is usually pale green to yellow when ripe, with sweet white (or, more rarely, pink or red) flesh and very thick albedo (rind pith). It is the largest citrus fruit, in diameter, and usually weighing . Other spellings for pomelo include pummelo, and pommelo, and other names include Jeruk Bali, Chinese grapefruit, jabong, lusho fruit, pompelmous from Tamil pampa limāsu,(பம்பளி மாசு) = pompous lemon] and shaddock. Etymology, cultivation and uses The pomelo tastes like a sweet, mild grapefrui...