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  2. Energy - Wikipedia

    en.wikipedia.org/wiki/Energy

    equal amount of energy carried by matter that is moving from one system to another. A turbo generator transforms the energy of pressurized steam into electrical energy. Energy may be transformed between different forms at various efficiencies. Items that transform between these forms are called transducers.

  3. Sources of electrical energy - Wikipedia

    en.wikipedia.org/wiki/Sources_of_electrical_energy

    Magnetism. The most useful and widely employed application of magnetism is in the production of electrical energy. The mechanical power needed to assist in this production is provided by a number of different sources. These sources are called prime movers, and include diesel, petrol and natural gas engines. Coal, oil, natural gas, biomass and ...

  4. List of energy resources - Wikipedia

    en.wikipedia.org/wiki/List_of_energy_resources

    Hydropower -Energy from moving water. Hygroelectricity. Implosion. Kaplan turbine. Light crude oil. Liquid fuel. Liquid nitrogen engine. Marine current power. Magnetohydrodynamic, generator, MHD generator or dynamo transforms thermal energy or kinetic energy directly into electricity.

  5. Quark - Wikipedia

    en.wikipedia.org/wiki/Quark

    1 / 3 ⁠. A quark (/ kwɔːrk, kwɑːrk /) is a type of elementary particle and a fundamental constituent of matter. Quarks combine to form composite particles called hadrons, the most stable of which are protons and neutrons, the components of atomic nuclei. [1] All commonly observable matter is composed of up quarks, down quarks and electrons.

  6. Internal energy - Wikipedia

    en.wikipedia.org/wiki/Internal_energy

    The internal energy of a thermodynamic system is the energy contained within it, measured as the quantity of energy necessary to bring the system from its standard internal state to its present internal state of interest, accounting for the gains and losses of energy due to changes in its internal state, including such quantities as ...

  7. Electrical energy - Wikipedia

    en.wikipedia.org/wiki/Electrical_energy

    Electrical energy is energy related to forces on electrically charged particles and the movement of those particles (often electrons in wires, but not always). This energy is supplied by the combination of current and electric potential (often referred to as voltage because electric potential is measured in volts) that is delivered by a circuit (e.g., provided by an electric power utility).

  8. First law of thermodynamics - Wikipedia

    en.wikipedia.org/wiki/First_law_of_thermodynamics

    v. t. e. The first law of thermodynamics is a formulation of the law of conservation of energy in the context of thermodynamic processes. The law distinguishes two principal forms of energy transfer, heat and thermodynamic work, that modify a thermodynamic system containing a constant amount of matter. The law also defines the internal energy ...

  9. Energy transformation - Wikipedia

    en.wikipedia.org/wiki/Energy_transformation

    Energy transformation, also known as energy conversion, is the process of changing energy from one form to another. [1] In physics, energy is a quantity that provides the capacity to perform work or moving (e.g. lifting an object) or provides heat. In addition to being converted, according to the law of conservation of energy, energy is ...