(Encyclopedia) Alicante Alicante älēkänˈtā [key], city, capital of Alicante prov., SE Spain, in Valencia. A Mediterranean port, it has exports of wine, oil, cereals, fruit…
(Encyclopedia) differential, in the automobile, a set of gears used on the driving (usually rear) axle. The two wheels on the driving axle must be interconnected in order to receive their energy from…
(Encyclopedia) differential geometry, branch of geometry in which the concepts of the calculus are applied to curves, surfaces, and other geometric entities. The approach in classical differential…
(Encyclopedia) differentiation, in biology, series of changes that occur in cells and tissues during development, resulting in their specialization. This, in turn, permits a greater variety of…
(Encyclopedia) diffraction, bending of waves around the edge of an obstacle. When light strikes an opaque body, for instance, a shadow forms on the side of the body that is shielded from the light…
(Encyclopedia) diffusion, in chemistry, the spontaneous migration of substances from regions where their concentration is high to regions where their concentration is low. Diffusion is important in…
