Abstract
MECHANICAL ENGINEERING IN ANCIENT EGYPT, PART 111: CLOCKS INDUSTRY
Prof. Dr. Galal Ali Hassaan*
ABSTRACT
The paper is the 111th paper in a series of papers about „mechanicalengineering in ancient Egypt?. It investigates the use of timekeepingdevices in ancient Egypt and the design methodology of those devices.Three types of clocks are investigated: water clocks, sundials and starclocks. The problem of constant number of hours per day over thewhole year is studied and the optimal design of the water clocks ishighlighted. Each type of time keeping devices is supported by anumber of typical devices from different ancient Egyptian dynasties.
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