From the time we first woke up to the sound of a mechanical clock ticking, clocks have been an essential part of our lives. Here are three interesting facts about the history of clocks:
1- The first clocks were made of rocks and were used to tell the time in ancient Egypt.
2- The first mechanical clock was invented in the 12th century by an Islamic mathematician named Al-Jazari.
3- The first digital clock was created in 1969 by British engineer Dennis Jarvis.
