homogeneous part
51Europe, history of — Introduction history of European peoples and cultures from prehistoric times to the present. Europe is a more ambiguous term than most geographic expressions. Its etymology is doubtful, as is the physical extent of the area it designates.… …
52Chemical potential — Chemical potential, symbolized by μ, is a measure first described by the American engineer, chemist and mathematical physicist Josiah Willard Gibbs. It is the potential that a substance has to produce in order to alter a system.[1] In broadest… …
53metallurgy — metallurgic, metallurgical, adj. metallurgically, adv. metallurgist /met l err jist/ or, esp. Brit., /meuh tal euhr jist/, n. /met l err jee/ or, esp. Brit., /meuh tal euhr jee/, n. 1. the technique or science of working or heating metals so as… …
54Sweden — /sweed n/, n. a kingdom in N Europe, in the E part of the Scandinavian Peninsula. 8,946,193; 173,732 sq. mi. (449,964 sq. km). Cap.: Stockholm. Swedish, Sverige. * * * Sweden Introduction Sweden Background: A military power during the 17th… …
55Single bullet theory — The Single Bullet Theory (or Magic Bullet Theory, as it is commonly called by its critics) was introduced by the Warren Commission to explain how three shots made by Lee Harvey Oswald resulted in the assassination of United States President John… …
56Maxwell's equations — For thermodynamic relations, see Maxwell relations. Electromagnetism …
57Nation state — For the ambiguities and specifications surrounding the terms nation, international, state, and country, see Nation. For the online video game, see Jennifer Government: NationStates. Part of the Politics series …
58Cambridge capital controversy — The Cambridge capital controversy was a 1960s debate in economics concerning the nature and role of capital goods (or means of production). The name arises because of the location of those most involved in the controversy: the debate was largely… …
59Vector space — This article is about linear (vector) spaces. For the structure in incidence geometry, see Linear space (geometry). Vector addition and scalar multiplication: a vector v (blue) is added to another vector w (red, upper illustration). Below, w is… …
60Partial differential equation — A visualisation of a solution to the heat equation on a two dimensional plane In mathematics, partial differential equations (PDE) are a type of differential equation, i.e., a relation involving an unknown function (or functions) of several… …
