Tech Over Time

By KingVaas

  • The Beginning of Television

    The Beginning of Television
    Scientists May and Smith experiment with selenium and light, this reveals the possibilty for inventors to transform images into electronic signals.

  • The idea of George Carey

    The idea of George Carey
    Boston civil servant George Carey was thinking about complete television systems and in 1877 he put forward drawings for what he called a selenium camera that would allow people to see by electricity.

  • The urging advancement of Bells' Photophone

    The urging advancement of Bells' Photophone
    Bell's Photophone (used light to transmit sound) and he wanted to advance his device for image sending.

  • Telephotography

    Telephotography
    Sheldon Bidwell experiments with his Telephotography that was similiar to Bell's Photophone.

  • Lines of Resolution

    Lines of Resolution
    Paul Nipkow sends images over wires using a rotating metal disk technology calling it the electric telescope with 18 lines of resolution.

  • We Called it Television

    We Called it Television
    At the World's Fair in Paris, the first International Congress of Electricity was held. That is where Russian Constantin Perskyi made the first known use of the word "television."

  • First Mechanical Television System

    First Mechanical Television System
    Boris Rosing combines Nipkow's disk and a cathode ray tube and builds the first working mechanical TV system.

  • Early Electronic Systems

    Early Electronic Systems
    Campbell Swinton and Boris Rosing suggest using cathode ray tubes to transmit images. Independent of each other, they both develop electronic scanning methods of reproducing images.