This is a which identifies articles and categories that relate to energy in general. Energy refers to "the potential for causing changes". The word is used in several different contexts. The engineering use has a precise, well-defined meaning, whilst many non-technical uses often do not. In science and physics, it's an attribute of a physical system's that is related to Work , Force and Matter .
See especially for a large number of conventional energy related topics.
- Activation Energy explains the differences in the speeds of various chemical reactions
- Bioenergetics
- Chemical Energetics
- Energy In Physical Cosmology
- Energy In Earth Science that is responsible for the macroscpic transformations on the planet Earth
- Electricity
- Exergy
- Green Energy
- Orders Of Magnitude (energy) - list describes various energy levels between 10−31 Joule s and 1070 joules
- Thermodynamics
- Perpetual Motion
- Heat
- History Of Energy
- Energy Forms , the forms in which energy can be defined
- Energy Transformation , relating to energy's changes from one form to another
- Energy (signal Processing) , the inner product of a signal in the time domain
- Potential Energy , the form of energy that is due to position of an object
- Kinetic Energy , the form of energy as a consequence of the motion of an object or its constituents
- Mechanical Energy , the potential energy and kinetic energy present in the components of a mechanical system.
- Binding Energy , a concept explaining how the constituents of atoms or molecules are bound together
- Bond Energy , a measure of the strength of a chemical bond
- Blue Energy , energy retrieved from the difference in the salt concentration between seawater and river water
- Nuclear Energy , energy that is the consequence of decomposition or combination of atomic nuclei
- Gibbs Free Energy , a related concept in chemical thermodynamics that incorporates entropy considerations too
- Helmholtz Free Energy , a thermodynamic potential that measures the "useful" work obtainable from a closed thermodynamic system at a constant temperature, useful for studying explosive chemical reactions
- Elastic Energy , which causes or is released by the elastic distortion of a solid or a fluid
- Ionization Energy - the (IE) of an atom is the energy required to strip it of an electron.
- Interaction Energy , the contribution to the total energy that is a result of interaction between the objects being considered
- Internal Energy - (abbreviated E or U) the total kinetic energy due to the motion of molecules (translational, rotational, vibrational) and the total potential energy associated with the vibrational and electric energy of atoms within molecules.
- Negative Energy
- Energy Conversion - process of converting energy from one form to another
- Dark Energy , used to explain some cosmological phenomena
- Energy Quality , empirical experience of the characteristics of different energy forms as they flow and transform
- Energy Density , amount of energy stored in a given system or region of space per unit volume, or per unit mass
- Energy Flow , flow of energy in an ecosystem through food chains
- Energetics , the scientific study of energy flows under transformation
- Stress-energy Tensor , the density and flux of energy and momentum in space-time; the source of the gravitational field in general relativity
- Food Energy , energy in food that is available
- Primary Energy - Energy contained in raw fuels and any other forms of energy received by a system as input to the system.
- Radiant Energy - energy that is transported by waves
- Rotational Energy - An object's rotational energy or angular kinetic energy is part of its total kinetic energy
- Solar Radiation - radiant energy emitted by the sun, particularly electromagnetic energy
- List Of Large Wind Farms
- List Of Notable Renewable Energy Organizations
- List Of Photovoltaics Companies
- List Of Renewable Energy Magazines
- List Of Renewable Energy Topics By Country
- List Of Solar Thermal Power Stations
- List Of Wind Turbine Manufacturers
- Energy (Society) , applications and energy related activities in society
- World Energy Resources And Consumption
- List Of Energy Resources , substances like fuels, petroleum products and electricity
- Energy Crisis , the need to conserve energy resources
- Energy Development , development of energy resources
- Future Energy Development
- Embodied Energy , the sum total of energy expended to deliver a good or service as it travels through the economy
- Energy Conservation , tips for conserving energy resources
- Energy Economics , as the foundation of other relationships
- Energy Industry , that supplies of fuel for consumers
- Energy Policy , government policies and plans for energy supply
- Energy Storage , methods commonly used to store energy resources for later use
- Biosphere
- Ecology
- Energy Balance
- Energy Conservation - includes tips for consumers
- Earth Day
- Energy Development - Ongoing effort to provide abundant and accessible energy, through knowledge, skills and constructions.
- Free Energy Suppression
- Future Energy Development - Provides a general overview of future energy development.
- History Of Perpetual Motion Machines
- Hubbert Peak Theory , also known as - the theory that world oil production will peak (or has peaked), and will then rapidly decline, with a corresponding rapid increase in prices.\
- Power Harvesting
- Renewable Energy Development
- Barrel Of Oil Equivalent
- British Thermal Unit
- Calorie
- Units Of Energy , joules, ergs, calories, ''etc.''
- Current Solar Income - the amount of solar energy that falls as sunlight
- Direct Current
- Electronvolt - (symbol: eV) is the amount of energy gained by a single unbound electron when it falls through an electrostatic potential difference of one volt
- Planck Energy , 1.22 × 1019 GeV (billion electron volts)
- Enthalpy
- Erg - (symbol "erg") unit of energy and mechanical work in the centimetre-gram-second (CGS) system of units
- EU Energy Label
- Fill Factor - defined as the ratio of the maximum power (Vmp x Jmp) divided by the short-circuit current (Isc) and open-circuit voltage (Voc) in light current density - voltage (J-V) characteristics of solar cells.
- Foot-pound - (symbol ft·lbf or ft·lbf) is an Imperial and U.S. customary unit of mechanical work, or energy, although in scientific fields one commonly uses the equivalent metric unit of the joule (J). There are approximately 1.356 J/(ft·lbf).
- Francis Turbine the most common water turbine in use today
- Gigaton - Metric Unit of mass, equal to 1,000,000,000 (1 billion) Metric tons, 1,000,000,000,000 (1 trillion) kilograms
- Gray (unit) - (symbol: Gy), is the SI unit of energy for the absorbed dose of radiation. One gray is the absorption of one joule of radiation energy by one kilogram of matter. One gray equals 100 rad, an older unit.
- Heat
- Joule - (symbol J, also called newton meter, watt second, or coulomb volt)
- Kilowatt-hour - (symbol: kW·h) corresponds to one kilowatt (kW) of power being used over a period of one hour.
- Kinetic Energy
- Mass Driver
- Mass-energy Equivalence - where mass has an energy equivalence, and energy has a mass equivalence
- Megawatt
- Net Energy Gain
- Photoelectric Effect
- Power Beaming - Moving energy from one place to another through "empty space" (or air)
- Power Factor - of an AC electric power system is defined as the ratio of the real power to the apparent power.
- Therm - (symbol thm) a non-SI unit of heat energy. It is approximately the heat equivalent of burning 100 cubic feet of natural gas. In the US gas industry it is defined as exactly 100,000 BTU59°F or 105.4804 megajoules.
- Ton Of Oil Equivalent
- TPE - Ton Petroleum Equivalent, 45.217 GJ , see Ton Of Oil Equivalent
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