Skip to main content

The National MagLab is funded by the National Science Foundation and the State of Florida.

Electromagnetism History: Electron Timeline

The electron has fascinated humankind for centuries. Here are some highlights from the annals of science.

Around 600 B.C.

1600

  • It's 'electric' (boogie woogie woogie!)
  • An English scientist coins the term “electricus" to describe the property Thales observed centuries before. From the Greek word for amber, the word later engenders the terms "electricity" and "electron."

1752

  • Sly as a kite
  • Brainy Ben Franklin takes one for the team by tying a key to a kite during a thunderstorm. He convinces the world that static electricity and lightning are, in fact, the same thing.

1800

  • Taking charge
  • Alessandro Volta learns to store steady, reliable electrical currents in the first batteries.

1820

  • Match made in science
  • Some astute scientists question whether something's going on between electricity and magnetism. After observing them together on numerous occasions, they confirm their suspicions with a series of discoveries; electromagnetism becomes the "it couple" of the century.

1842

  • Faraday furthers the field
  • Michael Faraday uses electricity to split compounds into individual elements, a process termed "electrolysis." He is also to thank for the principles of electromagnetic induction, generation and transmission.

1865

  • Maxwell makes waves
  • James Clerk Maxwell proposes that electromagnetism exists as waves travelling the speed of light, backing this revolutionary thought with his equations.

1878

  • The world gets lit
  • Joseph Swan and Thomas Edison invent and develop the light bulb, changing forever the way we see the world.

1894

  • Name recognition
  • George Johnstone Stoney proposes a fundamental unit of electricity called the "electron."

1897

  • Science goes subatomic
  • J.J. Thompson's experiments conclude the existence of the tiny, negatively charged particles named by Stoney.

1911

  • Fast and frosty
  • Heike Kamerlingh Onnes discovers that, at extremely low temperatures, electrical resistance in mercury drops to zip, a phenomenon that came to be called superconductivity.

1931

  • Coming into focus
  • Ernst Ruska builds the first electron microscope. Using beams of electrons to create images, it provides greater resolution and magnification than light microscopes.

1975

  • Peering beyond the skin
  • Godfrey Hounsfield and Allan Cormack invent a new use for X-rays (which, like light, are produced by the movement of electrons in atoms). Their system uses X-rays in CT scans to look inside the body’s tissues.

1989

  • Electrons connect us, part 1
  • Tim Berners Lee invents the World Wide Web, which combined electronic networks around the world to create what we now know as the internet.

2017

Story by Abigail Engleman