light efficiency
31Traffic light — The traffic light, also known as traffic signal, stop light, traffic lamp, stop and go lights, robot or semaphore, is a signaling device positioned at a road intersection, pedestrian crossing, or other location. Its purpose is to indicate, using… …
32Politics of light rail in North America — The distinct circumstances under which light rail systems have been introduced to North America (particularly the United States) have caused differences in the development and implementation of those systems as well as spur political controversy… …
33Northwest Energy Efficiency Alliance — The Northwest Energy Efficiency Alliance (NEEA) is a non profit organization working to maximize energy efficiency in the Pacific Northwest through the acceleration and adoption of energy efficient products, services and practices. NEEA is… …
34Fuel efficiency — is a form of thermal efficiency, meaning the efficiency of a process that converts chemical potential energy contained in a carrier fuel into kinetic energy or work. Overall fuel efficiency may vary per device, which in turn may vary per… …
35Algorithmic efficiency — In computer science, efficiency is used to describe properties of an algorithm relating to how much of various types of resources it consumes. Algorithmic efficiency can be thought of as analogous to engineering productivity for a repeating or… …
36Energy efficiency in British housing — Domestic housing in the United Kingdom presents one of the major opportunities for achieving the 20% overall cut in UK carbon dioxide emissions targeted by the Government for 2010.Carbon emissionsAlthough carbon emissions from housing have… …
37Engine efficiency — of thermal engines is the relationship between the total energy contained in the fuel, and the amount of energy used to perform useful work. There are two classifications of thermal engines (1) Internal combustion (gasoline, diesel and gas… …
38Faraday-efficiency effect — In electrochemistry, the Faraday efficiency effect is the potential misinterpretation of data through failure to take into account a Faraday efficiency of less than 100 per cent. Until recent decades it was common to assume that the release of… …
39Counting efficiency — The counting efficiency is the ratio between the number of particles or photons counted with a radiation counter and the number of particles or photons of the same type and energy emitted by the radiation source (IUPAC Compendium of Chemical… …
40Detective quantum efficiency — The detective quantum efficiency (often abbreviated as DQE) is a measure of the combined effects of the signal (related to image contrast) and noise performance of an imaging system, generally expressed as a function of spatial frequency. This… …
