Tecnologia papel decisivo

EVOLUTION OF TECHNOLOGY

By Julia.Ana
  • 4000 BCE

    THE WHEEL

    THE WHEEL
    Is a circular block of a hard and durable material at whose center has been bored a circular hole through which is placed an axle bearing about which the wheel rotates when a moment is applied by gravity. By the mesopotamians.
  • 2600 BCE

    RAMP

    RAMP
    Is a sloped or curved surface that joins different
    level, like a surface that tilts from one level to another.
    By Egyptians
  • 206 BCE

    COMPASS

    COMPASS
    An instrument containing a magnetized pointer which shows the direction of magnetic north and bearings from it.
  • 100 BCE

    PAPER

    PAPER
    Is a thin material produced by pressing together moist fibres of cellulose pulp derived from wood, rags or grasses, and drying them into flexible sheets. It is a versatile material with many uses, including writing, printing, packaging, cleaning, decorating, and a number of industrial and construction processes. By Han Dynasty
  • 904

    GUNPOWDER

    GUNPOWDER
    An explosive mixture, as of
    potassium, nitrate, sulfur, and
    charcoal used in shell and
    cartridges, in firework for blasting,
    etc. By Tang Fu
  • 1440

    PRINTING PRESS

    PRINTING PRESS
    A printing press is a mechanical device for applying pressure to an inked surface resting upon a print medium, thereby transferring the ink.
    By Johannes Gutenber

  • REFRIGERATION

    REFRIGERATION
    Is the process of removal of heat in a space, substance, or system to lower and/or maintain its temperature below the ambient one. In other words, refrigeration means artificial cooling.
    By Oliver Evans

  • RADIO

    RADIO
    The transmission and reception of electromagnetic waves of radio frequency, especially those carrying sound messages.
    By Nikola Tesla, Guglielmo Marconi

  • TRAFFIC LIGHT

    TRAFFIC LIGHT
    Traffic lights are signalling devices positioned at road intersections, pedestrian crossings, and other locations to control flows of traffic.
    By Garrett Augustus Morgan

  • TELEVISION

    TELEVISION
    An electronic system of transmitting transient images of fixed or moving objects together with sound over a wire or through space by apparatus that converts light and sound into electrical waves and reconverts them into visible light rays and audible sound.
    By John Logie Baird.