-
560 BCE
SUNDIAL
The ancient Greeks developed many of the principles and forms of the sundial. -
281 BCE
Water clock
This invention was created by Arquímedes of Siracusa -
399
MECHANICAL CLOCK
This invetion was created by Gerberto de Aurillac -
520
CANDLE CLOCK
This invention was created by You Jiangu -
OBELISK
This invention was createn by Alberto Prebisch