In ancient times, humans have no clock. Depending on the nature of life The sun is the first watch man known, historians recorded that the name Herodotus, about 3500 years ago humans recognize sundial. Which is considered the world's first watch By the time can be read from the shadow descended onto the scratch marks.
the sundial (Sundial) is a tell time and measuring time
.The natural way to the traditional one. They have used since ancient times to the present, based on the movement of the sun
appeared in each day as the main
.Ancient times before starting a clock mechanical or electronic clocks. Use to tell time, such as the current human use of natural phenomenon. Observation the changes from nature to the time.
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