History of timekeeping devices

A clock is a device that determines the current time of the day and measures the duration of time intervals less than one day in units.

Water clocks if we believe the data, it turns out that the water clock was discovered by chance on the banks of the Chu River in 1965. "It should be noted that the valuable artifact is a huge find, not to mention Kazakhstan, which was first found in our region on the territory of Central Asia. Water clocks or clepsydra. The main mechanism is hourglass-shaped [1]. During the water hour, water was poured from one container to another in a steady drop.

Pendulum clocks Dutch scientist H. Huygens invented the pendulum clock in 1657. The pendulum (a long rod with an oblong filling) swings smoothly. That is, each of its vibrations is repeated at the same time interval. It rotates back and forth in real time depending on the length and resists oscillation at other speeds.

Hourglass here, the sand flows from two glass vessels through their fused narrow necks, alternately drawing and drinking to each other.