Technology
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Technology is the application of conceptual knowledge to achieve practical goals, especially in a reproducible way. The word technology can also mean the products resulting from such efforts, includin
A steam turbine with the case opened, an example of energy technology
A person holding a hand axe
An array of Neolithic artifacts, including bracelets, axe heads, chisels, and polishing tools
The wheel was invented c. 4,000 BCE.
Wheel
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A wheel is a rotating component intended to turn on an axle bearing. The wheel is one of the key components of the wheel and axle, which is one of the six simple machines. Wheels, in conjunction with
Spoked wheel of reconstructed Celtic funerary wagon, 550 BCE, Hochdorf Chieftain's Grave, Germany
The Ljubljana Marshes Wheel with axle, the oldest wooden wheel yet discovered, dating to the Copper Age (c. 3130 BCE)
A depiction of an onager-drawn cart on the Sumerian "War" panel of the Standard of Ur (c. 2500 BCE)
Solid wheels on a heavy temple car, contrasted with the lighter wire-spoked wheels of the black roadster bicycle in the foreground