1 of 5000

|

canvas prints black and white canvas prints city canvas prints clock canvas prints engraving canvas prints invention canvas prints greece canvas prints egypt canvas prints ancient canvas prints technology canvas prints ancient greece canvas prints machinery canvas prints classical greek canvas prints 3rd century bc canvas prints alexandria canvas prints cross section canvas prints

drawings black and white drawings city drawings clock drawings engraving drawings invention drawings greece drawings egypt drawings ancient drawings technology drawings ancient greece drawings machinery drawings classical greek drawings 3rd century bc drawings alexandria drawings cross section drawings

Add This Artwork to Your Favorites Collection

Comment

Add This Artwork to Your Favorites Collection

Comment

Reconstruction of a clepsydra (water clock), invented by Ctesibius of Alexandria, c270 BC (1857). Ctesibius (fl270 BC) was an inventor and mathematician who initiated a tradition of great engineers in ancient Alexandria. None of his writings have survived, and his inventions are only known about from references to them made by others. This clock worked by water dripping at a constant rate and raising a float with a pointer. It was only superseded in terms of the accuracy of its timekeeping in the 17th century when Christiaan Huyghens showed how the pendulum could be applied to clocks (Photo by Ann Ronan Pictures/Print Collector/Getty Images)

Image provided by Getty Images.