Thales of Miletus writes about amber being charged by rubbing. This was later defined as static electricity.
Otto von Guericke invented a machine that produced static electricity.
Robert Boyle discovered that electric force could be transmitted through a vacuum and observed attraction and repulsion.
Stephen Gray discovers that electricity can be conducted.
Benjamin Franklin experiments with static charges in the air and theorized about the existence of an electrical fluid that could be composed of particles.
First electric motor invented by Michael Faraday.
The electric transformer is invented. Thomas Edison introduces the "three-wire" transmission system.
Electron discovered by J. J. Thomson.
Lee De Forest invented the electric amplifier.
The transistor is invented.
The Clean Water Act of 1972 is passed.
The New York City blackout occurs.
The Three Mile Island nuclear accident occurs.
Annapolis, N.S., tidal power plant—first of its kind in North America (Canada) opened.
Electricity marketed on Internet.