electric displacement vector
121Superlens — A superlens, super lens or perfect lens is a lens which uses metamaterials to go beyond the diffraction limit. The diffraction limit is an inherent limitation in conventional optical devices or lenses.[1] In 2000, a type of lens was proposed,… …
122environmental works — ▪ civil engineering Introduction infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations …
123Integral — This article is about the concept of integrals in calculus. For the set of numbers, see integer. For other uses, see Integral (disambiguation). A definite integral of a function can be represented as the signed area of the region bounded by its… …
124Magnetohydrodynamics — For the academic journal, see Magnetohydrodynamics (journal). Magnetohydrodynamics (MHD) (magneto fluid dynamics or hydromagnetics) is an academic discipline which studies the dynamics of electrically conducting fluids. Examples of such fluids… …
125Sign (mathematics) — The plus and minus symbols are used to show the sign of a number. Not to be confused with the sine function in trigonometry. In mathematics, the word sign refers to the property of being positive or negative. Every nonzero real number is either… …
126Model warship combat — VNS Verdun takes a shot at USS Nathaniel Greene at the 2007 North American Big Gun Open [1] event Model warship combat is an international club activity, in which participants construct radio controlled scale models of actual …
127Geophysical MASINT — is a branch of Measurement and Signature Intelligence (MASINT) that involves phenomena transmitted through the earth (ground, water, atmosphere) and manmade structures including emitted or reflected sounds, pressure waves, vibrations, and… …
128Coherent states — In quantum mechanics a coherent state is a specific kind of quantum state of the quantum harmonic oscillator whose dynamics most closely resembles the oscillating behaviour of a classical harmonic oscillator. It was the first example of quantum… …
