Editing Efficiency (section)

== In science and technology==

=== In physics ===
* Useful work per quantity of energy, mechanical advantage over ideal mechanical advantage, often denoted by the Greek lowercase letter η ([[Eta]]):
** [[Electrical efficiency]]
** [[Energy conversion efficiency]]
** [[Mechanical efficiency]]
** [[Thermal efficiency]], ratio of work done to thermal energy consumed
* [[Efficient energy use]], the objective of maximising efficiency
** In thermodynamics:
*** [[Energy conversion efficiency]], measure of second law thermodynamic loss
** [[Radiation efficiency]], ratio of radiated power to power absorbed at the terminals of an antenna
** [[Volumetric efficiency]], in internal combustion engine design for the RAF
* [[Lift-to-drag ratio]]
* [[Faraday efficiency]], electrolysis
* [[Quantum efficiency]], a measure of sensitivity of a photosensitive device
* [[Grating efficiency]], a generalization of the reflectance of a mirror, extended to a diffraction grating

===In economics===
* [[Productivity improving technologies]]
* [[Economic efficiency]],  the extent to which waste or other undesirable features are avoided
* Market efficiency, the extent to which a given market resembles the ideal of an [http://pages.stern.nyu.edu/~adamodar/New_Home_Page/invemgmt/effdefn.htm efficient market]
** [[Pareto efficiency]], a state of its being impossible to make one individual better off, without making any other individual worse off<ref>{{Cite web |last=میرمهدی |first=سید احسان |date=2024-08-01 |title=10 کتاب برتر برای افزایش کارایی، بهره وری و راندمان |url=https://kababoketab.ir/blog/10-%DA%A9%D8%AA%D8%A7%D8%A8-%D8%A8%D8%B1%D8%AA%D8%B1-%D8%A8%D8%B1%D8%A7%DB%8C-%D8%A7%D9%81%D8%B2%D8%A7%DB%8C%D8%B4-%DA%A9%D8%A7%D8%B1%D8%A7%DB%8C%DB%8C/ |access-date=2024-12-31 |website=کباب و کتاب {{!}} کتاب، خوشمزه عِینه کباب! |language=fa-IR}}</ref>
** [[Kaldor-Hicks efficiency]], a less stringent version of Pareto efficiency
** [[Allocative efficiency]], the optimal distribution of goods
** [[Efficiency wages]], paying workers more than the market rate for increased productivity
* [[Business efficiency]], revenues relative to expenses, etc.
* [[Efficiency Movement]], of the Progressive Era (1890–1932), advocated efficiency in the economy, society and government

=== In other sciences ===
* In computing:
** [[Algorithmic efficiency]], optimizing the speed and memory requirements of a computer program.
** A [[non-functional requirement]] (criterion for quality) in systems design and systems architecture which says something about the resource consumption for given load
** [[Efficiency factor]], in data communications
** [[Storage efficiency]], effectiveness of computer data storage
* [[Efficiency (statistics)]], a measure of desirability of an estimator
* [[Material efficiency]], compares material requirements between construction projects or physical processes
* [[Administrative Behavior#Chapter IX. The Criterion of Efficiency|Administrative efficiency]], measuring transparency within public authorities and simplicity of rules and procedures for citizens and businesses
* In biology:
** [[Photosynthetic efficiency]]
** [[Ecological efficiency]]