The clepsydra
Sure, by observing the stars, the ancient Egyptians divided time for hours
They took note of the perishable and temporary nature of the elements of the world and through their pursuit of eternity, the ancient Egyptians seemed to see the concept of time and thus the concept of measuring time was born through several tools such as: solar clocks, star watches, and water clocks.
Time is born of the original chaos and still threatens the world order. Thus the concept of the principle of change is divided and measured in hours.
The time (wnwt) as the branch of time is mentioned since the time of the pyramids (the old empire)
The principle of the clepsydra function is based on the presence of two water holes in each other, which allows the flow of water whose velocity is measured in time.
CN mw: water vessel whose outer trough is loaded into the wall of its terminals.
And because the flow rate depends on the weight of the liquid above. There is a destructive clepsydra to make the flow steady and it is one of the great works of its time which proves the knowledge of the former Egyptians of the physical law of hydraulic propulsion.
The hours were only for senior officials and men of authority.
The clepsydras are reserved for setting the time especially at night (the symbolic night was a period of dangers in which the world was not and is assaulted by the Viper Apophis / apep agent of chaos in the night race) Rê.
