Magnetic field

Already in ancient times was observed developments in the electricity Already in ancient times was observed developments in the electricity, of attracting light objects by amber (formerly pot arty). Treated this phenomenon as a kind of curiosity, with no special meaning. Also been observed in the form of electrical discharge piousness, considering it as a manifestation of anger and dissatisfaction of the gods, who thus wanted to force people into obedience. No penetration, however, in exploring these phenomena. The development of electrical engineering, as a new branch of science, began very late. Systematic experimental studies on electricity only began in the eighteenth century. Name of electricity comes from the fact that the first attempts electroscopic bodies were performed using amber, called in Greek electron In such a short history of research on electricity and its practical application, where the discovery of ever governing electricity occurred closer to getting to know and use in daily life. As in other fields of science major contribution to knowledge about the initiation of the electricity and Polish scientists. Enormous spread of electricity to be attributed to such benefits as ease of manufacture, ease of use it as a source of propulsion machinery, or as a source of light or heat, and ease of transmission of electricity for long distances by high voltage overhead lines, with only small losses.