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  2. Chemical energy - Wikipedia

    en.wikipedia.org/wiki/Chemical_energy

    Chemical energy is the energy of chemical substances that is released when the substances undergo a chemical reaction and transform into other substances. Some examples of storage media of chemical energy include batteries, [1] food, and gasoline (as well as oxygen gas, which is of high chemical energy due to its relatively weak double bond [2] and indispensable for chemical-energy release in ...

  3. Electrical energy - Wikipedia

    en.wikipedia.org/wiki/Electrical_energy

    Electricity generation is the process of generating electrical energy from other forms of energy.. The fundamental principle of electricity generation was discovered during the 1820s and early 1830s by the British scientist Michael Faraday.

  4. Electric arc - Wikipedia

    en.wikipedia.org/wiki/Electric_arc

    An electric arc between two nails. An electric arc (or arc discharge) is an electrical breakdown of a gas that produces a prolonged electrical discharge.The current through a normally nonconductive medium such as air produces a plasma, which may produce visible light.

  5. Alternating current - Wikipedia

    en.wikipedia.org/wiki/Alternating_current

    A schematic representation of long distance electric power transmission. From left to right: G=generator, U=step-up transformer, V=voltage at beginning of transmission line, Pt=power entering transmission line, I=current in wires, R=total resistance in wires, Pw=power lost in transmission line, Pe=power reaching the end of the transmission line, D=step-down transformer, C=consumers.

  6. Multiplicity (statistical mechanics) - Wikipedia

    en.wikipedia.org/wiki/Multiplicity_(statistical...

    A simplified model of the two-state paramagnet provides an example of the process of calculating the multiplicity of particular macrostate. [1] This model consists of a system of N microscopic dipoles μ which may either be aligned or anti-aligned with an externally applied magnetic field B.

  7. Electric heating - Wikipedia

    en.wikipedia.org/wiki/Electric_heating

    An electric radiative space heater. Electric infrared radiant heating uses heating elements that reach a high temperature. The element is usually packaged inside a glass envelope resembling a light bulb and with a reflector to direct the energy output away from the body of the heater.

  8. Free energy - Wikipedia

    en.wikipedia.org/wiki/Free_energy

    Free energy device, a hypothetical perpetual motion device that is supposedly capable of drawing energy from a hidden free energy field, which is unknown in science; Free energy suppression conspiracy theory, in which advanced energy technologies are suppressed by governments or special interest groups