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Results 1 - 10 of 5790 for  Wikipedia / Energy / Wikipedia    (3565152 articles)

Energy print that page

Lightning_over_Oradea_Romania_zoom

In physics , energy ( Ancient Greek : ἐνέργεια   energeia  "activity, operation" [ 1 ] ) is an indirectly observed quantity. It is often understood as the ability a physical system has to do work on other physical systems. [ 2 ] [ 3 ] Since work is defined as a force acting

Z Energy print that page

Following the change in ownership, Z Energy has employed more New Zealanders for roles that were previously outsourced overseas including: IT [ 4 ] , finance and call centre services [ 5 ] . Initially, the company was called Greenstone and the service station branding remained as Shell. After

wikipedia.org | 2011/9/12 9:32:03

Potential energy print that page

Solar_sys

In physics , potential energy is the energy stored in a body or in a system due to its position in a force field or due to its configuration. [ 1 ] The SI unit of measure for energy and work is the Joule (symbol J). The term "potential energy " was coined by the 19th century Scottish

Vacuum energy print that page

The theory considers vacuum to implicitly have the same properties as a particle, such as spin or polarization in the case of light , energy , and so on. According to the theory, most of these properties cancel out on average leaving the vacuum empty in the literal sense of the word. One

wikipedia.org | 2011/5/14 22:03:57

Dark energy print that page

DarkMatterPie

In physical cosmology , astronomy and celestial mechanics , dark energy is a hypothetical form of energy that permeates all of space and tends to increase the rate of expansion of the universe . [ 1 ] Dark energy is the most accepted theory to explain recent observations that the universe

Kinetic energy print that page

Wooden_roller_coaster_txgi

The kinetic energy of an object is the energy which it possesses due to its motion . [ 1 ] It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity . Having gained this energy during its acceleration , the body maintains this kinetic energy

Fermi energy print that page

The Fermi energy is a concept in quantum mechanics usually referring to the energy of the highest occupied quantum state in a system of fermions at absolute zero temperature . Confusingly, the term "Fermi energy " is often used to describe a different but closely-related concept, the

wikipedia.org | 2011/7/17 21:15:23

Internal energy print that page

In thermodynamics , the internal energy is the total energy contained by a thermodynamic system . [ 1 ] It is the energy needed to create the system, but excludes the energy to displace the system's surroundings, any energy associated with a move as a whole, or due to external force

wikipedia.org | 2011/10/4 15:21:14

Energy level print that page

A quantum mechanical system or particle that is bound -- that is, confined spatially—can only take on certain discrete values of energy . This contrasts with classical particles, which can have any energy . These discrete values are called energy levels . The term is commonly used for

wikipedia.org | 2011/9/13 16:48:37

Mass–energy equivalence print that page

Relativity3_Walk_of_Ideas_Berlin

In physics , mass– energy equivalence is the concept that the mass of a body is a measure of its energy content. In this concept the total internal energy E of a body at rest is equal to the product of its rest mass m and a suitable conversion factor to transform from units of mass