A core of magnetic material surrounded by a coil of wire through which an electric current is passed to magnetize the core. Ordinary every day use of electricty produces magnetic and electric fields. A series of electromagnetic waves. The entire range of wavelengths or frequencies of electromagnetic radiation extending from gamma rays to the longest radio waves and including visible light. A function for which energy sources or fuels are used in buildings, factories, agriculture, or transportation.
Energy is stored work, WORK being the application of a force through a distance.
Stored energy becomes working energy when we use it. Energy has many forms, which scientists have demonstrated are all fundamentally the same. A form of energy characterized not in terms of the motion or position or structure of objects but in terms of the motion of electric and magnetic forces. To heat a substance is to do a form of microscopic work in which the individual molecules of the substance are made to move more rapidly about in all directions, without any bulk motion taking place. A survey that shows how much energy you use in your house or apartment.