In large clocks with heavy weights, electric motors are sometimes used to do the winding.

He became interested in clocks and watches after taking apart a broken clock at his home.

The new studies are part of a larger explosion of interest in biological clocks.

This observation nags away at her: why is everything covered in clocks these days?

Since then, caesium has been widely used in atomic clocks.

They are also used as backup power to keep the time in certain electronic clocks.

It also has the advantage of reducing many systematic effects present in atomic clocks.

It is used in clocks with traditional mechanical movements which are run on electricity.

In European clocks that use the 24-hour system all the hours from 1 to 12 are before noon.

This is commonly seen in astronomical clocks of the period.