10 Inventions of the 20th century

By Jin Woo

  • E=mc2

    Albert Einstein published the Theory of Relativity and made famous the equation, E = mc2.

  • Sonar Devices

    Lewis Nixon invents the first sonar like device.
  • Neon Lights

    Neon Lights

    George Claude invented neon lighting on January the 19th in 1915.
  • Pop Up Toaster

    Pop Up Toaster

    Charles Strite invented the Pop up toaster on the 29th of May in 1919.

  • Liquid fueled rockets

    Robert H. Goddard invents liquid-fueled rockets.

  • Iron Lung

    Philip Drinker invents the iron lung.

  • Penicilin

    Scottish biologist Alexander Fleming discovers penicillin.

  • Electron microscope

    Germans Max Knott and Ernst Ruska co-invent the electron microscope.
  • Cat's eyes

    Cat's eyes

    Percy Shaw invented the cat's eyes on the 19th of March in 1935.
  • The Ballpoint Pen

    The Ballpoint Pen

    Ladislo Biro invented the Ball Point Pen the 15th of June 1938.