Pneumatic motor from the expansion of the gas. These days, using the patent pending 'K'Air Generator', converted to work as a compressed-gas motor, the project should be launched in 2010, thanks to a North American group of investors, but for the purpose of developing first a green energy power system. In the original Nègre air engine, one piston compresses air from the atmosphere to mix with the stored compressed air (which will cool drastically as it expands). This mixture drives the second piston, providing the actual engine power. MDI's engine works with constant torque, and the only way to change the torque
Electric potential energy terms of the electric field in the form where formula_13 is the displacement of the electric field within a dielectric material and integration is over the entire volume of the dielectric. The total electrostatic potential energy stored within a charged dielectric may also be expressed in terms of a continuous volume charge, formula_14, where integration is over the entire volume of the dielectric. These latter two expressions are valid only for cases when the smallest increment of charge is zero (formula_16) such as dielectrics in the presence of metallic electrodes or dielectrics containing many charges. Electric potential energy Electric potential