battery: A device that can convert chemical energy into electrical energy.
circuit: A network that transmits electrical signals. In the body, nerve cells create circuits that relay electrical signals to the brain. In electronics, wires typically route those signals to activate some mechanical, computational or other function.
electric current: A flow of electric charge — electricity — usually from the movement of negatively charged particles, called electrons.
electricity: A flow of charge, usually from the movement of negatively charged particles, called electrons.
electron: A negatively charged particle, usually found orbiting the outer regions of an atom; also, the carrier of electricity within solids.
factor: Something that plays a role in a particular condition or event; a contributor.
gamma rays: High-energy radiation often generated by processes in and around exploding stars. Gamma rays are the most energetic form of light.
physicist: A scientist who studies the nature and properties of matter and energy.
potential energy: The energy held by an object due not to its motion but instead to its position or condition (such as being held motionless by a brake or suspended from a wire). Examples of objects possessing this type of energy include a compressed spring or a mass of snow on a hillside (think of its capacity to create an avalanche).
resistance: (in physics) Something that keeps a physical material (such as a block of wood, flow of water or air) from moving freely, usually because it provides friction to impede its motion.
unit: (in measurements) A unit of measurement is a standard way of expressing a physical quantity. Units of measure provide context for what numerical values represent and so convey the magnitude of physical properties. Examples include inches, kilograms, ohms, gauss, decibels, kelvins and nanoseconds.
voltage: A force associated with an electric current that is measured in units known as volts. Power companies use high-voltage to move electric power over long distances.