For example, a tractor’s wheels are large and ... but they are wide enough to help you balance. Wheel and axle mechanisms can be used in other ways as well, like in this windmill, this Ferris ...

A collection of perforated pebbles from an archaeological site in Israel may be spindle whorls, representing a key milestone in the development of rotational tools including wheels, according to a ...

Archaeologists may have uncovered one of the earliest examples of rotational tools ... When connected, they form a rudimentary wheel-and-axle mechanism that can spin fibers like wool or flax ...