Was a great inventor and mathematician Greek, who lived in Alexandria. Despite his numerous creations of devices and mechanisms, it is relatively unknown or ignored. He studied thoroughly natural phenomena and made profound contributions to geometry. The first Barber or professional Barber is considered and invented an adjustable mirror. Among other many thing invented a hydraulis or water organ.
Ctesibius (922; 964; 951; 963; 953; 946; 953; 959; 962; ) was a scholar, inventor, and physicist of Greek origin from the third century before Christ, who lived in Alexandria. He is considered the father of pneumatics. See water clock of ctesibius