mathematical relationships between units
91dimensional analysis — Physics. a method for comparing the dimensions of the physical quantities occurring in a problem to find relationships between the quantities without having to solve the problem completely. Cf. dimension (def. 6). [1920 25] * * * Technique used… …
92Periodization — is the attempt to categorize or divide time into named blocks. The result is a descriptive abstraction that provides a useful handle on periods of time with relatively stable characteristics. However, determining the precise beginning and ending… …
93Harmonic series (mathematics) — In mathematics, the harmonic series is the divergent infinite series: Its name derives from the concept of overtones, or harmonics in music: the wavelengths of the overtones of a vibrating string are 1/2, 1/3, 1/4, etc., of the string s… …
94Near and far field — This article is about the electromagnetic concept. For the mathematical, see Near field (mathematics). Antenna field regions for antennas that are shorter than the wavelength of the radiation they emit, such as the whip antenna of a citizen s… …
95Critical thinking — is the process or method of thinking that questions assumptions. It is a way of deciding whether a claim is true, false, or sometimes true and sometimes false, or partly true and partly false. The origins of critical thinking can be traced in… …
96Exchange value — In political economy and especially Marxian economics, exchange value refers to one of four major attributes of a commodity, i.e., an item or service produced for, and sold on, the market. The other three aspects are use value, value and price.… …
97Concept — For other uses, see Concept (disambiguation). A concept (substantive term: conception) is a cognitive unit of meaning an abstract idea or a mental symbol sometimes defined as a unit of knowledge, built from other units which act as a concept s… …
98Fundamental interaction — In physics, a fundamental interaction or fundamental force is a mechanism by which particles interact with each other, and which cannot be explained in terms of another interaction. Overview In the conceptual model of fundamental interactions,… …
99Ocular dominance column — Ocular dominance columns are stripes of neurons in the visual cortex of certain mammals (including humans) that respond preferentially to input from one eye or the other.[1] The columns span multiple cortical layers, and are laid out in a striped …
100Gothic architecture — See also: Gothic art The western façade of Reims Cathedral, France …
