Multiple nuclei model — The multiple nuclei model is an ecological model put forth by Chauncy Harris and Edward Ullman in the 1945 article The Nature of Cities. The model describes the layout of a city. It notes that while a city may have started with a central business … Wikipedia
Atomic theory — Atomic model redirects here. For the unrelated term in mathematical logic, see Atomic model (mathematical logic). This article is about the historical models of the atom. For a history of the study of how atoms combine to form molecules, see… … Wikipedia
Interference theory — Contents 1 History 2 Proactive Interference 2.1 Proactive Interference with Single and Multiple Lists 2.2 Proactive Interference and Context … Wikipedia
List of multiple discoveries — Main article: Multiple discovery Copernicus … Wikipedia
Scattering theory — Top: the real part of a plane wave travelling upwards. Bottom: The real part of the field after inserting in the path of the plane wave a small transparent disk of index of refraction higher than the index of the surrounding medium. This object… … Wikipedia
Cell nucleus — HeLa cells stained for the cell nucleus DNA with the Blue Hoechst dye. The central and rightmost cell are in interphase, thus their entire nuclei are labeled. On the left, a cell is going through mitosis and its DNA has condensed ready for… … Wikipedia
galaxy — /gal euhk see/, n., pl. galaxies. 1. Astron. a. a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space. b. (usually cap.) See Milky Way. 2. any large and brilliant or impressive… … Universalium
Multicellular organism — In this image, a wild type Caenorhabditis elegans is stained to highlight the nuclei of its cells. Multicellular organisms are organisms that consist of more than one cell, in contrast to single celled organisms. Most life that can be seen with… … Wikipedia
Evolution of multicellularity — The first organisms that existed are believed to have been unicellular. How organisms then became multicellular is a huge evolutionary step and is consequently under much debate. However, unlike some other huge steps in evolution,… … Wikipedia
Recrystallization (metallurgy) — Recrystallization is a process by which deformed grains are replaced by a new set of undeformed grains that nucleate and grow until the original grains have been entirely consumed. Recrystallization is usually accompanied by a reduction in the… … Wikipedia
Cognitive neuroscience of visual object recognition — Object recognition is the ability to perceive an object’s physical properties (such as shape, colour and texture) and apply semantic attributes to the object, which includes the understanding of its use, previous experience with the object and… … Wikipedia
