Electricity is a major force of nature. In this section, you can learn how electricity works and what its potential uses are.

How Gasoline Works

Without gasoline, the world as we know it would grind to a screeching halt. The U.S. alone consumes well over a hundred billion gallons of gasoline per year. Learn all about this vital fuel.

31-40 of 49
  • Fuel Cell

    Fuel Cell

    Fuel Cell, a device that converts the chemical energy of a fuel directly into electrical energy. See more »

  • Fuse, Electric

    Fuse, Electric

    Fuse, Electric, a protective device for breaking an electric circuit. A fuse consists essentially of a metal strip or wire that melts at a lower temperature than the wire and other components in the rest of the circuit. See more »

  • Galvanometer


    Galvanometer, an instrument used to indicate the presence, direction, or strength of a small electric current. See more »

  • Grounding, Electrical

    Grounding, Electrical

    Grounding, Electrical, the connecting of electrical equipment and wiring systems to the earth by a wire or other conductor The primary purpose of grounding is to reduce the risk of serious electric shock from current leaking into uninsulated metal parts of an appliance, power tool, or other electrical device. See more »

  • Induction Coil

    Induction Coil

    Induction Coil, a device for converting low-voltage direct current (DC) into high-voltage alternating current (AC). See more »

  • Leyden Jar

    Leyden Jar

    Leyden Jar, an early and simple form of capacitor (electric condenser), a device for storing electricity. See more »

  • Ohm's Law

    Ohm's Law

    Ohm's Law, a law of physics. It states that in an electrical conductor the ratio of potential difference (voltage) to current is constant. See more »

  • Oscilloscope


    Oscilloscope, an instrument that produces a visual image of an electrical signal. See more »

  • Piezoelectricity


    Piezoelectricity, electricity generated by certain crystals and ceramics when they are deformed by mechanical pressure. See more »

  • Potentiometer


    Potentiometer, an electrical device that measures potential difference between two points in a circuit by comparison with a standard battery of known potential difference. See more »

31-40 of 49
  • Most Popular