"The Antikythera Mechanism Research Projectபரணிடப்பட்டது 2008-04-28 at the வந்தவழி இயந்திரம்", The Antikythera Mechanism Research Project. Retrieved 2007-07-01 Quote: "The Antikythera Mechanism is now understood to be dedicated to astronomical phenomena and operates as a complex mechanical "computer" which tracks the cycles of the Solar System."
Indu Ramchandani (2000). Student's Britannica India,7vol.Set. Popular Prakashan. p. 146. ISBN978-0-85229-761-2. Retrieved 23 March 2013. BRANCHES There are traditionally four primary engineering disciplines: civil, mechanical, electrical and chemical.
Britannica on Greek civilization in the 5th century Military technology Quote: "The 7th century, by contrast, had witnessed rapid innovations, such as the introduction of the hoplite and the trireme, which still were the basic instruments of war in the 5th." and "But it was the development of artillery that opened an epoch, and this invention did not predate the 4th century. It was first heard of in the context of Sicilian warfare against Carthage in the time of Dionysius I of Syracuse."
"The Antikythera Mechanism Research Projectபரணிடப்பட்டது 2008-04-28 at the வந்தவழி இயந்திரம்", The Antikythera Mechanism Research Project. Retrieved 2007-07-01 Quote: "The Antikythera Mechanism is now understood to be dedicated to astronomical phenomena and operates as a complex mechanical "computer" which tracks the cycles of the Solar System."
The Engineering Profession by Sir James Hamilton, UK Engineering Council Quote: "The Civilingenior degree encompasses the main branches of engineering civil, mechanical, electrical, chemical." (From the Internet Archive)
