Who invented the sundail?

Answer 1

The first sundials were thought to have been used at around 3,500 BC (about 5,500 years ago). As they were first used such a long time ago, no one knows exactly who invented them.

This method of using the sun to tell the time was later adapted into one of the oldest forms of clock, the sundial. By using a vertical pole on a horizontal surface, the pasting of daylight hours could be easily tracked. This method for of telling time is still used today, and not just as decoration in gardens. By placing an angled vertical plain onto a circular horizontal plain, like a clock face and placing it in the sun, a simple clock has been made. As the sun shines onto the sundial, a shadow is produced, and this points to a number. This number is the hour of the day. It is a very simple idea, but it was still not very accurate, as on a cloudy, or rainy day, the sundial would be useless. Nevertheless this method was used for over 2000 years without much improvement. Then something new came along.