SCIENCE AND TECHNOLOGY

By estela888
  • Revolver-Samuel Colt

    Revolver-Samuel Colt

    For security.
  • Elevator (with brake)-Elisha Graves Otis

    Elevator (with brake)-Elisha Graves Otis

    It is necessary to be able to stop the cabin in a safe and controlled manner, avoiding collisions or serious accidents.
  • Bunsen gas lighter-Robert Wilhelm Bunsen

    Bunsen gas lighter-Robert Wilhelm Bunsen

    To heat, sterilize or combust samples or chemical reagents.

  • Vacuum Packaging- Amanda Jones

    It is important for food preservation.
  • Multi-Needle Sewing Machine- Helen Blanchard

    Multi-Needle Sewing Machine- Helen Blanchard

    Necessary to be able to make garments more easily.
  • Telephone-Alexander Graham Bell

    Telephone-Alexander Graham Bell

    The telephone is relevant since it allows communication between cities, countries, continents, etc.
  • Mary Anderson- Windshield Wipers

    Mary Anderson- Windshield Wipers

    It is necessary to be able to move around in a car even if it rains.
  • Fire Escape Ladder-Anna Connelly

    Fire Escape Ladder-Anna Connelly

    It is necessary to prevent deaths in fires.
  • Phonograph Record-Emilie Berliner

    Phonograph Record-Emilie Berliner

    To store music.
  • The X-ray telescope -Wilhelm Roentgen

    The X-ray telescope -Wilhelm Roentgen

    Allows visualization of the interior of the human body without surgery.