THE DEFINITIVE GUIDE TO AUTOMATION

Ctesibius's clepsydra (third century BC) It was a preoccupation with the Greeks and Arabs (within the period of time involving about three hundred BC and about 1200 AD) to help keep correct observe of time. In Ptolemaic Egypt, about 270 BC, Ctesibius explained a float regulator for your water clock, a device not as opposed to the ball and cock i