10 Inventions That Changed The World
10 Inventions That Changed The World
10 Inventions That Changed The World
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10
The Plow
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Compared to some of the gleaming, electronic inventions that fill our lives
today, the plow doesn't seem very exciting. It's a simple cutting tool used to
carve a furrow into the soil, churning it up to expose nutrients and prepare it for
planting. Yet the plow is probably the one invention that made all others
possible.
No one knows who invented the plow, or exactly when it came to be. It
probably developed independently in a number of regions, and there is
evidence of its use in prehistoric eras. Prior to the plow, humans were
subsistence farmers or hunter/gatherers. Their lives were devoted solely to
finding enough food to survive from one season to the next. Growing food
added some stability to life, but doing it by hand was labor intensive and took a
long time. The plow changed all that.
Plows made the work easier and faster. Improvements in the plow's design
made farming so efficient that people could harvest far more food than they
needed to survive. They could trade the surplus for goods or services. And if
you could get food by trading, then you could devote your day-to-day existence
to something other than growing food, such as producing the goods and
services that were suddenly in demand.
The ability to trade and store materials drove the invention of written language,
number systems, fortifications and militaries. As populations gathered to
engage in these activities, cities grew. It's not a stretch to say that the plow is
responsible for the creation of human civilization.
Wheel
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The wheel is another invention so ancient that we have no way of knowing who
first developed it. The oldest wheel and axle mechanism we've found was near
Ljubljana, Slovenia, and dates to roughly 3100 B.C.
The wheel made the transportation of goods much faster and more efficient,
especially when affixed to horse-drawn chariots and carts. However, if it had
been used only for transportation, the wheel wouldn't have been as much of a
world-changer as it was. In fact, a lack of quality roads limited its usefulness in
this regard for thousands of years.
A wheel can be used for a lot of things other than sticking them on a cart to
carry grain, though. Tens of thousands of other inventions require wheels to
function, from water wheels that power mills to gears and cogs that allowed
even ancient cultures to create complex machines. Cranks and pulleys need
wheels to work. A huge amount of modern technology still depends on the
wheel, like centrifuges used in chemistry and medical research, electric motors
and combustion engines, jet engines, power plants and countless others.
8
Printing Press
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Like many of the inventions on this list, the man we believe invented the
printing press (Johann Gutenberg in the 1430s) actually improved on pre-existing
technologies and made them useful and efficient enough to become popular.
The world already had paper and block printing -- the Chinese had them as
early as the 11th century -- but the complexity of their language limited
popularity. Marco Polo brought the idea to Europe in 1295.
Gutenberg combined the idea of block printing with a screw press (used for
olive oil and wine production). He also developed metal printing blocks that
were far more durable and easier to make than the hand-carved wooden
letters in use previously. Finally, his advances in ink and paper production
helped revolutionize the whole process of mass printing.
Refrigeration
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The ability to keep food cold for prolonged periods (and even during shipping,
once refrigerated trucks were developed) drastically changed the food
production industry and the eating habits of people around the world. Now, we
have easy access to fresh meats and dairy products even in the hottest
summer months, and we're no longer tied to the expense of harvesting and
shipping natural ice -- which never could have kept pace with the world's
growing population in any case.
Communications
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Maybe it's cheating to lump the telegraph, telephone, radio and television into
one "invention," but the development of communication technology has been a
continuum of increased utility and flexibility since Samuel Morse invented the
electric telegraph in 1836 (building on the prior work of others, of course). The
telephone simply refined the idea by allowing actual voice communications to
be sent over copper wires, instead of just beeps that spelled out the plain text
in Morse code. These communication methods were point-to-point, and
required an extensive infrastructure of wires to function.
Steam Engine
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Prior to the invention of the steam engine, most products were made by hand.
Water wheels and draft animals provided the only "industrial" power available,
which clearly had its limits. The Industrial Revolution, which is perhaps the
greatest change over the shortest period of time in the history of civilization,
was carried forward by the steam engine.
The concept of using steam to power machines had been around for
thousands of years, but Thomas Newcomen's creation in 1712 was the first to
harness that power for useful work (pumping water out of mines, for the most
part). In 1769, James Watt modified a Newcomen engine by adding a separate
condenser, which vastly increased the steam engine's power and made it a far
more practical way to do work. He also developed a way for the engine to
produce rotary motion, which may be just as important as the efficiency gains.
Thus, Watt is often considered the inventor of the steam engine.
While the steam engine has been eclipsed by electric and internal combustion
engines in the areas of transport and factory power, they're still incredibly
important. Most power plants in the world actually generate electricity using
steam turbines, whether the steam is heated by burning coal, natural gas or a
nuclear reactor.
Automobile
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If the steam engine mobilized industry, the automobile mobilized people. While
ideas for personal vehicles had been around for years, Karl Benz's 1885
Motorwagen, powered by an internal combustion engine of his own design, is
widely considered the first automobile. Henry Ford's improvements in the
production process -- and effective marketing -- brought the price and the
desire for owning an auto into the reach of most Americans. Europe soon
followed.
Lightbulb
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If there's a common theme to this list, it's that no major invention came from a
single stroke of genius from a single inventor. Every invention is built by
incrementally improving earlier designs, and the person usually associated
with an invention is the first person to make it commercially viable. Such is the
case with the light bulb. We immediately think of Thomas Edison as the electric
light bulb's inventor, but dozens of people were working on similar ideas in the
1870s, when Edison developed his incandescent bulb. Joseph Swan did
similar work in Britain at the time, and eventually the two merged their ideas
into a single company, Ediswan.
The bulb itself works by transmitting electricity through a wire with high
resistance known as a filament. The waste energy created by the resistance is
expelled as heat and light. The glass bulb encases the filament in a vacuum or
in inert gas, preventing combustion.
You might think the light bulb changed the world by allowing people to work at
night or in dark places (it did, to some extent), but we already had relatively
cheap and efficient gas lamps and other light sources at the time. It was
actually the infrastructure that was built to provide electricity to every home and
business that changed the world. Today, our world is filled with powered
devices than we can plug in pretty much anywhere. We have the light bulb to
thank for it.
Computer
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Internet
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The Internet, a network of computers covering the entire planet, allows people
to access almost any information located anywhere in the world at any time. Its
effects on business, communication, economy, entertainment and even politics
are profound. The Internet may not have changed the world as much as the
plow, but it's probably on par with the steam engine or automobile.
The Internet is such a powerful invention that we've probably only begun to see
the effects it will have on the world. The ability to diffuse and recombine
information with such efficiency could accelerate the rate at which further
world-changing inventions are created. At the same time, some fear that our
ability to communicate, work, play and do business via the Internet breaks
down our ties to local communities and causes us to become socially isolated.
Like any invention, the good or ill it accomplishes will come from how we
choose to use it.