Frog

THe History of Clock

By 877437
  • The First Mechanical Alarm Clock

    The First Mechanical Alarm Clock

    History of the Alarm Clock
  • The First Wristwatch

    The First Wristwatch

    -Created by Patek Phillipe
    -Only for Lady's
  • The Plato Clocks

    The Plato Clocks

    ・the first degital clocks
    ・produced by Ansonia Clock Company
  • The First Quartz Clock

    The First Quartz Clock

    ・invented by Warren Marrison

  • A Speaking Clock was invented

    The Speaking ClockParis International Exhibition
  • The First Atomic Clock

    The First Atomic Clock

    ・ an ammonia maser device
    ・built at the U.S. National Bureau of Standards
  • The Royal Mecca Clock

    The Royal Mecca Clock

    The Mecca clock
    ・the largest clock in the world
    ・in Saudi Arabia
    ・151 feet in diameter
  • Jaquet Droz's La Machine

    Jaquet Droz's La Machine

    Jaquet Droz's La Machine
    ・10 tears to built
    ・it writes the time on a card
    ・$342,275