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Wheel and axle – Simple machines – Physics

By | 2018-01-11T14:09:22+00:00 August 17th, 2017|Central Asia, Physics|

An Egyptian potter uses a pottery wheel, about 2000 BC Wheels do not exist in nature, and no animals use them except people. Even people didn't use wheels until the early Bronze Age, around 3500 BC, much later than the other simple machines (the lever and the inclined plane). Who invented the wheel? The earliest evidence for people [...]

History of Bicycles

By | 2017-08-07T21:00:03+00:00 August 7th, 2017|Modern Europe, Science|

A velocipede Bicycles were invented bit by bit in many different countries. They grew out of earlier inventions like wheels (from Central Asia) and wheelbarrows (from China), but Karl von Drais, a German inventor, built the first riding machine with two wheels, one in front of the other, that you had to balance on, in 1817. Like wheelbarrows, this [...]