Edad media de Alan

By Eddduardoo
  • The mechanical clock
    May 4, 1091

    The mechanical clock

    A mechanical watch works thanks to the energy of a spring (mainspring) that, when unwound, moves a system of gears.
  • Glasses
    Mar 11, 1270

    Glasses

    Glasses in the Middle Ages were two convex lenses joined by a rivet that rested directly on the nose, made in wooden or antler frames.
  • the printing press
    Oct 14, 1440

    the printing press

    Before the invention of the movable type printing press by Gutenberg in the Middle Ages (mid-15th century), printing was manual and mainly used methods such as xylography (wood engraving), which involved carving text and images into wooden tablets, requiring a plate for each page and limiting the number of copies.