energy state

energy state

also called  Energy Level,  

      in physics, any discrete value from a set of values of total energy for a subatomic particle confined by a force to a limited space or for a system of such particles, such as an atom or a nucleus. A particular hydrogen atom, for example, may exist in any of several configurations, each having a different energy. These energy states, in their essentials, remain fixed and are referred to as stationary states.

      The state of a hydrogen atom, or any submicroscopic system, however, may change from one configuration to another by emitting or absorbing a discrete amount of energy. Such configurations are also called energy levels; the atom, or system, is said to undergo a transition between two energy levels when it emits or absorbs energy. The lowest energy level of a system is called its ground state; higher energy levels are called excited states. See also Franck-Hertz experiment.

* * *

Universalium. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • energy state — noun a definite stable energy that a physical system can have; used especially of the state of electrons in atoms or molecules according to quantum theory only certain energy levels are possible • Syn: ↑energy level • Hypernyms: ↑energy, ↑free… …   Useful english dictionary

  • energy state — energinė būsena statusas T sritis fizika atitikmenys: angl. energetic state; energy state vok. energetischer Zustand, m; Energiezustand, m rus. энергетическое состояние, n pranc. état énergétique, m …   Fizikos terminų žodynas

  • energy state — energinė būsena statusas T sritis Standartizacija ir metrologija apibrėžtis Tam tikra energija apibūdinama sistemos arba ją sudarančių elementų būsena. atitikmenys: angl. energy state vok. Energiezustand, m rus. энергетическое состояние, n pranc …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • energy state — noun see energy level …   New Collegiate Dictionary

  • Energy transfer upconversion — or ETU is a physical principle (most commonly encountered in solid state laser physics) that involves the excitation of a laser active ion to a level above that which would be achieved by simple absorption of a pump photon, the required… …   Wikipedia

  • State severance taxes —   Any severance, production, or similar tax, fee, or other levy imposed on the production of crude oil, natural gas, or coal by any State, local government acting under authority of State law, or by an Indian tribe recognized as eligible for… …   Energy terms

  • Energy Resources Program Account — (ERPA)   The state law that directs California electric utility companies to gather a state energy surcharge per kilowatt hour of electricity consumed by a customer. These funds are used for operation of the California Energy Commission. As of… …   Energy terms

  • State permit/license/mine number —   Code assigned to a mining operation by the state in which the operation is located.   U.S. Dept. of Energy, Energy Information Administration s Energy Glossary …   Energy terms

  • State —   One of the 50 States, including adjacent outer continental shelf areas, or the District of Columbia.   U.S. Dept. of Energy, Energy Information Administration s Energy Glossary …   Energy terms

  • Energy policy of the United States — The energy policy of the United States is determined by federal, state and local public entities in the United States, which address issues of energy production, distribution, and consumption, such as building codes and gas mileage standards.… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”