Energy

Stephan Gray

Mar 1, 1675

Stephen Gray (England) distinguished between conductors and nonconductors of electrical charges.

George Von Kliest

Jan 1, 1745

Georg Von Kleist (Germany) developed the first electric capacitator, a device for storing electricity.

Ben Franklin

Apr 1, 1752

Franklin tied a key to a kite string during a thunderstorm, and proved that static electricity and lightning were the same thing.

George Ohm

Jan 1, 1826

Ohm defined the relationship between power, voltage, current and resistance in Ohms Law.

Michael Faraday

Apr 14, 1831

Faraday proved that electricity can be induced (made) by changes in an electromagnetic field. Faraday's experiments about how electric current works led to the understanding of electrical transformers and motors.

Joseph Henry

May 16, 1835

Henry nvented the electrical relay, which could send electrical currents long distances.

Sir William Robert Grove

Mar 14, 1839

Grove developed the first fuel cell, a device that produces electrical energy by combining hydrogen and oxygen.

James Prescott Joule

Oct 17, 1841

Joule showed that energy is conserved in electrical circuits involving current flow, thermal heating, and chemical transformations.

Charles Brush

Jun 6, 1876

Bush invented the open coil dynamo (or generator) that could produce a steady current of electricity.

Thomas Edison

Dec 1, 1879

Thomas Edison invents the first commercially practical incandescent light.

California Powerline

May 4, 1893

A 22-mile AC powerline was opened, sending electricity from Folsom Powerhouse in California to Sacramento.

Mercury Vapour Lamp

Mar 1, 1901

Mercury Vapour Lamp1 Mar 1901Peter Cooper Hewitt of United States of America patented the mercury vapour lamp.