Have you ever wondered how clocks work?
http://www.historyofwatch.com/clock-facts/how-clocks-works/
All clocks need a power source to act properly. Most clocks use springs as that source of power or suspended weights.
https://www.youtube.com/watch?v=ctfjCrJ8S8w
Here is a quartz watch:
Quartz watches are different from normal watches. Most watches have a pendulum. A pendulum helps to keep the watch on track. In other words, it makes the watch tell the correct time.
This is related to engineering because it shows how clocks work and the technical work put into making a clock.
