surface impurity concentration
61Phosphorus — This article is about the chemical element. For other uses, see Phosphorus (disambiguation). silicon ← phosphorus → sulfur …
62Crystal structure — In mineralogy and crystallography, crystal structure is a unique arrangement of atoms or molecules in a crystalline liquid or solid. A crystal structure is composed of a pattern, a set of atoms arranged in a particular way, and a lattice… …
63Baptism — This article is about the Christian religious ceremony. For other uses, see Baptism (disambiguation). Baptism of Neophytes by Masaccio, 15th century, Brancacci Chapel, Florence.[ …
64Monoclonal antibodies — A general representation of the methods used to produce monoclonal antibodies. Monoclonal antibodies (mAb or moAb) are monospecific antibodies that are the same because they are made by identical immune cells that are all clones of a unique… …
65Directional solidification — Prog …
66Fused quartz — A sphere manufactured by NASA out of fused quartz for use in a gyroscope in the Gravity Probe B experiment. It is one of the most accurate spheres ever created by humans, differing in shape from a perfect sphere by no more than 40 atoms of… …
67Hungary — This article is about the European country. For other uses, see Hungary (disambiguation). Republic of Hungary Magyar Köztársaság …
68Color theory — For the American electronica/synthpop musician, see Color Theory. In the visual arts, color theory is a body of practical guidance to color mixing and the visual impacts of specific color combinations. Although color theory principles first… …
69Geopolitik — is the branch of uniquely German geostrategy. It developed as a distinct strain of thought after Otto von Bismarck s unification of the German states but began its development in earnest only under Emperor Wilhelm II. Central concepts concerning… …
70Land pollution — is the degradation of earth s land surfaces often caused by human activities and their misuse of land resources. Haphazard disposal of urban and industrial wastes, exploitation of minerals, and improper use of soil by inadequate agricultural… …
