Pneumatic tool Pneumatic tool A pneumatic tool, air tool, air-powered tool or pneumatic-powered tool is a type of power tool, driven by compressed air, supplied by an air compressor. Pneumatic tools can also be driven by compressed carbon dioxide () stored in small cylinders allowing for portability. Most pneumatic tools convert the compressed air to work using a pneumatic motor. Compared to their electric power tool equivalents, they are safer to run and maintain, without risk of sparks, short-circuiting or electrocution, and have a higher power to weight ratio, allowing a smaller, lighter tool to accomplish the same task. Furthermore, they are
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