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World Journal of Engineering
Research and Technology

( An ISO 9001:2015 Certified International Journal )

An International Peer Reviewed Journal for Engineering Research and Technology

ISSN 2454-695X

Impact Factor : 7.029

ICV : 79.45

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Indexing

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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