World in Gear Changing Technology

As we all know that Gears have existed since the development of rotating machinery. References to gears can be traced back to the 4th Century BC, where Aristotle wrote about wheels using friction between smooth surfaces to transmit motion.



The earliest known written reference to gears was circa 50 AD by Heron of Alexandria. He was a prolific inventor and mechanic who designed systems that utilized gears to lift heavy building objects. The early Greeks made use of metal gears with wedge-shaped teeth. Romans made use of gears in their mills.

Today, we enjoy the benefits of gears in everything from electric rotating toothbrushes to gigantic ships and jets. Gears are now made from a variety of substances, depending on the application and strength needed.
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As we have sen in some applications, gears which  were also used as speed reducers. It then wasn’t until the Industrial Revolution some 1800 years later that increased the need for stronger gears and changed the way the world used power.

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