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Thursday, January 28, 2016

Some Important Inventions That Changed The World








Human are ingenious species. From the moment someone bashed a rock on the ground to make the first sharp-edged tool, to the development of Mars rovers and the internet, some key inventions specially stand out as evolutionary. *The Wheel:
Before the invention of the wheel in 3500 BC, humans were severly limited to how much stuff we could transport over land and how far. Wheeled carts facilitated agriculture and commerce by enabling transportation of goods to and from market and easing the burden of people traveling great distances. Now wheels are vital to our way of life, found in everything from clocks to vehicles to turbines. *The Nails:-
Without nails, civilization would surely crumble. The key invention dates back more than 2000 years to the Ancient Roman period, and became only possible after humans developed the ability to cast and reshape metal. Previously, wood structures had to be built by interlocking adjescent boards geometrically a much more arduous construction process. Meanwhile, the screw a stronger but harder to insert fastener is thought to have been invented by Greek scholar Archimedes in the third century of BC. **The Compass:-
Ancient mariners navigated by stars but that method did not work during the day or on cloudy nights, so it was unsafe to voyage far from land. The Chinese first invented the compass between 9th and 11th century. It was made up of lodestone, a naturally magnitized iron ore. (The picture is of the model ancient Chinese compass from Han Dynasty). ** Printing Press:
The German Johannese Gutenberg invented printing press around 1440. Key to its development was the hand mold, a new molding technique that enabled the rapid creation of large quantities of metal movable types. The other important inventions that changed the world include, the internal combustion engine, the telephone, the light bulb, Penicillin, and the internet.

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