There is no doubt about it, the 20th century is unparalleled by any that came before it in terms of its rate of technological advances and scientific discoveries – a rate that continues to speed through these early years of century 21 at an unprecedented pace. There were so many new developments and discoveries during this time, it was hard to narrow things down to just ten, but that’s what we did. The list below has effected humanity both positively and negatively. Regardless, they have held a tremendous influence over how our world has unfolded over the last 100 years. RELATIVITY OnLine’s list of greatest inventions and discoveries of the twentieth century follows, but allow us to ask – did we forget anything?
- 1. The Internet – The typewriter became obsolete after the personal computer was introduced to the general public and this slowly made writing in long-hand a thing of the past, but it took the internet to make the computer what it is today. While the airplane shrank our planet to the point that one could fly from Paris to New York in a few hours, the internet made it possible to be there in seconds.
- 2. Radio – suddenly it was possible for a person to be heard from thousands of miles away without the use of a wire (a real accomplishment in the early 1900s) but more importantly it was the center of family life until the onset of television in the 1950s.
- 3. Antibiotics – Until 1928 when Alexander Fleming discovered penicillin nearly any little bug someone picked up was potentially fatal.
- 4. Television – Where would we be without the boob tube?
- 5. The Airplane – The world was first made a smaller place by the locomotive in the 19th century, and the airplane did the same the 20th. Suddenly, any place in the world was there for the choosing.
- 6. The Automobile – The automobile became the most practical and reliable source of transportation ever invented and people the world over still cannot imagine life without them.
- 7. The Personal Computer – It’s hard to imagine a world without computers these days. They may have been around since World War Two, but these clunky underachieving hunks of scrap cannot be compared to today’s models, in which a person’s entire life can be stored and organized.
- 8. Rocketry – The Chinese are credited with inventing rockets over three thousand years ago, but it was in the 20th century when they transformed from exciting amusement to an effective weapon of war and terror.
- 9. The Submarine – Although predating the 20th century, submarines as we know them today came into being during the 20th century. With development of nuclear power, a submarine’s range and endurance become nearly unlimited effectively rendering all previous forms of naval warfare obsolete.
- 10. Nuclear Energy – With nuclear energy, humanity suddenly had a power source that was efficient, virtually unlimited, and didn’t pollute.




