diffraction efficiency

См. также в других словарях:

• Efficiency — as a technical term may refer to: * Algorithmic efficiency, optimizing the speed and memory requirements of a computer program * Efficient energy use, useful work per quantity of energy ** Energy conversion efficiency, desired energy output per… …   Wikipedia

• Diffraction grating — A very large reflecting diffraction grating. In optics, a diffraction grating is an optical component with a periodic structure, which splits and diffracts light into several beams travelling in different directions. The directions of these beams …   Wikipedia

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• Holographic data storage — is a potential replacement technology in the area of high capacity data storage currently dominated by magnetic and conventional optical data storage. Magnetic and optical data storage devices rely on individual bits being stored as distinct… …   Wikipedia

• Reflectivity — In photometry and heat transfer, reflectivity is the fraction of incident radiation reflected by a surface. In full generality it must be treated as a directional property that is a function of the reflected direction, the incident direction, and …   Wikipedia

• Guided-mode resonance — or waveguide mode resonance is a phenomenon wherein the guided modes of an optical waveguide can be excited and simultaneously extracted by the introduction of a phase matching element such as a diffraction gratingor . Such guided modes are also… …   Wikipedia

• Mary Lou Jepsen — at eTech in 2009. Mary Lou Jepsen (born 1965) is founder and CEO of Pixel Qi, a manufacturer of low cost, low power LCD screens for laptops. She was the first chief technology officer of One Laptop per Child (OLPC). Contents …   Wikipedia

• Wireless energy transfer — or wireless power is the transmission of electrical energy from a power source to an electrical load without artificial interconnecting conductors. Wireless transmission is useful in cases where interconnecting wires are inconvenient, hazardous,… …   Wikipedia

• Metamaterial antenna — This Z antenna tested at the National Institute of Standards and Technology is smaller than a standard antenna with comparable properties. Its high efficiency is derived from the Z element inside the square that acts as a metamaterial, greatly… …   Wikipedia