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Light Bulb

By charlotte.f

  • First electric light invented

    Humphry Davey invented the first electric light. The general electric company invented tungsten filaments for use in incandescent lightbulbs.

  • First Lamp

    Warren de la rue invented the first lamp but the cost of the metal platinum was too expensive to reproduce for the public to buy. This was a slight set back.

  • Prototype lightbulb used for electric light

    James Bowman Lindsay invented a constant electric lighting system using a prototype lightbulb.

  • Edward Shepard & Joseph Wilson made progress on a lightbulb.

    Edward Shepard invented an electrical incandescent arc lamp. Joseph Wilson Swan started working with carbonized paper to help with the progress of the lightbulb aswell.

  • Heinrich Göbel made the first true lightbulb

    A German watchmaker, invented the first true lightbulb. It was a safe and affordable design that only needed to improve in a few main areas such as durability.

  • Official light bulb

    Henry Woodward and Matthew Evans patented a light bulb. (He was the owner of the lightbulb invention and no one else was allowed to make one).

  • Mercury vacuum pump

    1875 - Herman Sprengel invented the mercury vacuum pump making it possible to develop a practical electric lightbulb. As de la Rue had discovered, by creating a vacuum it would help with the blackening of the bulb.

  • 13.5+ hour long lasting bulb

    Sir Joseph Wilson Swan was the first person to invent a practical and longer-lasting electic lightbulb (13.5 hours).

  • 40+ hours lasting bulb

    Thomas Alva Edison invented a bulb that lasted for forty hours. (Edison evolved his designs for the lightbulb based on the 1875 patent he purchased from inventors, Henry Woodward and Matthew Evans).

  • 600+ hour lasting bulb

    Edison's lightbulb lasted for over 600 hours and were able to be sold. This was a huge improvement and he was able to make a large profit because of how useful a long lasting lightbulb is.

  • Very long lasting bulb

    Irving Langmuir developed an bulb which improved the efficiency and durability. This was the final main adjustment to the lightbulb.