1600 BCE: Earliest Egyptian water clocks in use.

647 BCE - 629 BCE: Extensive collection of clay tablets acquired known as Ashurbanipal's Library at Nineveh.

597 BCE: Babylonian king Nebuchadnezar captures Jerusalem.

585 BCE: A battle between Media and Lydia broke off immediately as a result of a total eclipse of the sun and the two armies made peace. The eclipse was successfully predicted by Thales of Miletus.

450 BCE: Parapegma star calendar invented in Greece by Meton and Euctemon.

450 BCE: First klepsydra - water timekeeping device - used in Athens.

420 BCE: Democritos develops an atomic theory of matter.

310 BCE - 230 BCE: Life of Greek astronomer and mathematician Aristarchus of Samos.

287 BCE - 212 BCE: Life of Archimedes, physician, mathematician and engineer.

275 BCE: Ctesibius invents first sophisticated multi-cogged water-clock.

270 BCE: Aristarchus of Samos proposes a heliocentric world view.

190 BCE - 120 BCE: Life of Hipparchus of Nicea, the ancient Greek mathematician, astronomer and geographer considered the greatest astronomer of antiquity and among the most impressive in world history

159 BCE: First water-clock set up in Rome.

110 BCE - 50 BCE: Tower of The Winds by Andronicus constructed in Athens.

50 BCE: Antikythera instrument invented, an astronomical measuring device.

100 CE: The mathematician and astronomer Menelaus of Alexandria lived.

1799 CE: Alessandro Volta invents the first electric battery.

1821 CE: Michael Faraday discovers the principles of an electric motor.

1859 CE: Charles Darwin publishes On the Origin of Species by Means of Natural Selection, thereby introducing the Theory of Evolution.

1869 CE: The Periodic Table of Elements is proposed by Russian chemist Dmitri Mendeleev.