The crankset (also known as a chainset in the UK) of a bicycle is the component of the drivetrain that converts the reciprocating motion of the rider's legs into rotational motion used to drive the chain or belt, which in turn drives the rear wheel.The road-bicycle crankset depicted in this photograph was manufactured by Shimano, with two chainrings and 172.5 mm (6.79 in) cranks.

The 12-hour clock is a way of dividing the 24 hours of the day into two sections. The two halves are called ante meridiem (a.m.) and post meridiem (p.m.).. Both names ...

24-hour clock 12-hour clock; 00:00: 12.00a.m. - midnight 01:00: 1:00 a.m. 02:00: The 24-hour clock is a way of telling the time in which the day runs from midnight to midnight and is divided into 24 hours, numbered from 0 to 24.It does not use a.m. or p.m. This system is also referred to (only in the US and the English speaking parts of Canada) as military time or (only in the United …

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