In the 1960s, a group of computer scientists employed by the U.S. Defense Department's ARPA (Advanced Research Projects Agency) created a network of communications that connected computers within the organization, dubbed ARPANET which was the precursor to the internet.
Internet
Telephone
Alexander Graham Bell who was the first person to be granted patent for an electric telephone on the 7th of March in 1876 (his patent drawing can be seen above).
X-rays
The discovery of X-rays was made around the year 1895 and, since then, much has been written on Wilhelm Roentgen and the events that led up to the discovery.
Nuclear Energy
Nuclear energy was discovered was during the 1930s by Italian physicist Enrico Fermi. Nuclear energy is an energy form that is released from the nucleus the core of atoms composed of protons and neutrons.
Light Bulb
Thomas Edison began serious research into the development of an incandescent lamp on October 14, 1878, Edison made his debut patent filing in the name of "Improvement in Lighting Electricity".
Airplane
The Wright brothers created the first airplanes, which began in 1903 and the Wright Flyer really changed the world. Imagine what the future would look like just from the moment the first airplanes flew into the skies during the first decade of 1900.
Battery
The first battery was discovered in the year 1800, Italian scientist Alessandro Volta wrapped stacked discs of zinc and copper in a cloth, then submerged it in salty water, and found that it could conduct energy.
Image: Wikipedia
Magnifying glass
Franciscan friar and Oxford University scholar Roger Bacon first invented the magnifying glasses in 1268. The magnifying glass is sometimes called "Britain's first scientist," Bacon's magnifying glasses were based on research by Muslim scholars.