Knowledge in Clocks
Qualitative aptitude - Clocks
In this PDF there is detailed concepts and problems related to quantitative aptitude regarding clocks .You will be able to learn how to use in problems.
Kilari Harshitha Naidu
Pendulum clock
A pendulum clock is a clock that uses a pendulum, a swinging weight as its timekeeping element. From its invention in 1656 by Christiaan Huygens until the 1930s, the pendulum clock was the world's most precise timekeeper.
Arun Thomas