1950's
Millisecond, second, minute, hour, day, month, year, decade, century, millenium, eon and light year are the ones I can think of. Other unit measurers are called a pendulum, a stopwatch, a watch, a clock, a water clock, a pocketwatch, a grandfather clock, a sundial and an atomic clock.
the second hand
The mechanical clock is a medieval invention. The ancient world measured time by sundial and the water clock. Both of these were used by the Babylonians in the second millennium BC and both were improved by the Greeks.
8th century
The second hand on the clock circles 420 times in 7 hours.
The angular velocity of the second hand of a clock is pi/30 radians per second.
The pace of the system clock, called the clock speed, is measured by the number of ticks per second. The faster the clock speed, the more instruction the processor can execute per second.
The pace of the system clock, called the clock speed, is measured by the number of ticks per second. The faster the clock speed, the more instruction the processor can execute per second.
put clock oil on the second hand.
The first clock was an astronomical clock. It was built between 1352 and 1354. However, it stopped working around the beginning of the 16th century.
Sometimes, it is called a sweep hand, but the hands on a clock usually are called hour, minute, and second.
I think the heart and clock are the same because the heart beats every second, just like the clock ticks every second. Plus they can be easily broken.