Who invented the quarts clock?
In the 1920's the first Quartz were invented. This works by
applying a certain voltage and pressure inside the clock. This will
vibrate or oscillate the Quartz at a constant rate. This vibration
moves the hands on the clock in a very precise manner, making them
very cheap and very accurate. These are the clocks are used
everyday in our houses, offices and schools and in many cases
wrists. There are other types of clocks, such as atomic clocks, but
these are not widely used and are not yet perfected.