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Groundbreaking Inventions of the 20th Century

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"Groundbreaking Inventions of the 20th Century"
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In the 20th Century there were many inventions from the air conditioner to the lie detector. Many of the inventions that were founded in the 20th century are very important to what we have today.

1902 The air conditioner:
It was created by Willis Haviland Carrier. It was discovered that the evaporation of liquefied ammonia would result in a cooling of the air in which it evaporated into. This was the main process of the working air conditioner. Ammonia is a poison gas and would be deadly if leaked from an air conditioner, it was until 1928 when Thomas Midgley Jr. came up with Freon, which was much safer around humans.

1903 Windshield Wipers
Mary Anderson invented the windshield wipers, without this invention it would simply be too dangerous to be driving vehicles in the rain and therefore would stop people driving in the rain.

1905 Albert Einstein published the Theory of Relativity and made famous the equation, E = mc2.

1920 The Tommy Gun
John T. Thompson invented the Tommy gun. It was the first hand held machine gun in order to help end world war one. Without this gun we would not have had that famous line from scarface, "Say hello to my little friend"

1930 The Jet Engine
Frank Whittle and Dr Hans von Ohain both invent a jet engine. If the jet engine hadn't been invented traveling would simply not be the same, there would be no planes and all traveling would have to be done by car or train.

1945 A-Bomb
Although only been used twice, both on Japan, Hiroshima and Nagasaki the invention of the Atomic Bomb was very important to show the power of America on Japan when Russia were trying to take over, the use of the Atomic Bomb halted them.

1979 Mobile Phones
Possibly one of the most important inventions in modern history. The world today would be so much different if the mobile phone had not been invented.

1985 Windows
Created by Microsoft, THE most important piece of software to ever be made. If windows was not here today computers would not be anything like what they are, every computer, in the world, has windows on it.

These are just a few of the inventions that were founded in the 20th century and without them the world today would not be the same. All of these inventions, truly are groundbreaking inventions!

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