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source: pxhere.com
Sundials are the oldest known time-keeping instruments. They invented Sundials around 6,000 years ago in Babylon and refined them into a much more linear function in Ancient Egypt. They became a precious conventional clock that stayed in use for thousands of years, even to this day.
The construction of the first obelisks was tall and narrow stone structures. Its shadows facilitated the simple calculation of time from the circular divided horizontal disc set on the ground around it. This marked the genuine beginning of sundial appeal in Egypt.
Despite Europe’s inventive age of inventing mechanical clocks, the use of sundials continued due to their accuracy and dependability in sunny conditions. During the mid-nineteenth century, sundials were rendered useless for the government and the business industry when mechanical clocks first gave reliable time calculations.