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2EM:Inventions

  •  English    11     Public
    Important inventions
  •   Study   Slideshow
  • Tim Berners-Lee invented the _________ in 1990 which is the most common means of accessing data online in the form of websites and hyperlinks.
    World Wide Web
  •  25
  • The first commercially successful ___________ was patented by Thomas Edison in 1879
    lightbulb
  •  15
  • Alexander Graham Bell patented the first one in 1876, although here were many other inventors such as Elisha Gray and Antonio Meucci who also developed a talking telegraph.
    telephone
  •  15
  • Invented in 1913 by Fred W. Wolf Jr, the DOMELRE was the first successful, mass marketed ________________
    refrigerator
  •  25
  • Universally accepted system of writing used by and for blind persons and consisting of a code of 63 characters, each made up of one to six raised dots arranged in a six-position matrix or cell.
    Braille
  •  15
  • Gabriel Fahrenheit (1686-1736) was the first person to make a __________ using mercury.
    thermometer
  •  15
  • Hans and Zacharias Janssen invented the first compound ______ in the late 16th century when they discovered that, if they put a lens at the top and bottom of a tube and looked through it, objects on the other end became magnified.
    microscope
  •  15
  • In Germany, around 1440, goldsmith Johannes Gutenberg invented the _____ press, could produce up to 3,600 pages per workday. which
    printing
  •  10
  • The history of ______ dates back almost 2,000 years to when inventors in China first crafted cloth sheets to record their drawings and writings.
    paper
  •  20
  • Evidence indicates the ______ was created around 3500 B.C. in Mesopotamia to be used by potters—300 years before someone figured out to use them for chariots.
    wheel
  •  20
  • The _______ was discovered by Alexander Flemming in 1928 and is now the most widely used antibiotic in the world.
    penicillin
  •  10