concentration boundary
21Mason–Weaver equation — The Mason–Weaver equation (named after Max Mason and Warren Weaver) describes the sedimentation and diffusion of solutes under a uniform force, usually a gravitational field.[1] Assuming that the gravitational field is aligned in the z direction… …
22United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …
23Lesser Poland — For other uses, see Little Poland (disambiguation). Not to be confused with Lesser Poland Voivodeship. Lesser Poland superimposed on borders of current Polish voivodeships …
24Segregation in materials — refers to the enrichment of a material constituent at a free surface or an internal interface of a material. In a polycrystalline solid, a segregation site can be a dislocation, grain boundary, stacking fault, or an interface with a precipitate… …
25South African Wars (1879-1915) — Ethnic, political and social tensions among European colonial powers, indigenous Africa, and English and Dutch settlers led to open conflict in a series of wars and revolts between 1879 and 1915 that would have lasting repercussions on the entire …
26Fick's laws of diffusion — For the technique of measuring cardiac output, see Fick principle. Molecular diffusion from a microscopic and macroscopic point of view. Initially, there are solute molecules on the left side of a barrier (purple line) and none on the right. The… …
27Fick's law of diffusion — Fick s laws of diffusion describe diffusion and can be used to solve for the diffusion coefficient D . They were derived by Adolf Fick in the year 1855. First law Fick s first law relates the diffusive flux to the concentration field, by… …
28cosmos — /koz meuhs, mohs/, n., pl. cosmos, cosmoses for 2, 4. 1. the world or universe regarded as an orderly, harmonious system. 2. a complete, orderly, harmonious system. 3. order; harmony. 4. any composite plant of the genus Cosmos, of tropical… …
29Mthwakazi — This word Mthwakazi is derived from the name of Queen Mu Thwa, the first ruler of the Mthwakazi territory who ruled around 7,000 years ago. She was the matriarch of the Aba Thwa, the San people who were derogatively called the Bushmen by… …
30Optical fiber — A bundle of optical fibers A TOSLINK fiber optic audio c …
