The Greeks invented this and called it a clepsydra, which it literally means "water thief". It is used to time the speeches of lawyers by a hole in a bowl of water and its sinking speed showed the time spent. Later on, gears, models of planets and moon orbiting were added.
Is this good enough?
Water has to be added constantly and attention must be paid attentively and closely. Each has its only speed and was inappropriate for winter use.
control of our brain about our skull major parts of our brain different views of our brain why do we dream? what about nightmares? what about recurring dreams? how to remember our dreams? what do my dreams mean? what about televisions? air conditioners? light bulbs? telephones? clocks? computers? refrigerators? microwave ovens? Chinese culture? who are the authors?games zone