Check how ancient people use sundial and sundial origin

Sundial, also known as "sundial", is the use of the sun's shadow in China's ancient times to measure the time of a timekeeping instrument. The principle is to use the shadow cast by the sun to determine and divide the time. Sundial is usually made of copper pointer and stone disk composition. This method of using the projection of sunlight to keep time is a major invention in the field of astronomical timekeeping, and this invention has been used by mankind for thousands of years.

Note: The disk is engraved with the twelve hours represented by the heavenly stems and earthly branches, and the projection of the sunlight on the pointer is the instantaneous hour.

The world's earliest sundial was born six thousand years ago in the Kingdom of Babylon

It is true that it is not our country

But I estimate that our country's sundial is also an independent invention, after all, that thing is not high tech ......

It is the invention of the various nationalities of the time is not the same