|
 |
 |
|
Cast Tools Weapons: The aeolipile was a steam turbine invented in AD 1st century by Hero of Alexandria and described in his Pneumatica. It is the first known device to transform steam into rotary motion.
The first use ot fire was thought to be by Peking Man (approx. 500000 BC). However, evidence uncovered in Kenya (1981) and South Africa (1988) suggests the earliest controlled use of fire was about 1,420,000 years ago.
Archimedes, b. c. 290-280 BC in Greece, is credited with inventing the Archimedes screw, a device for raising water and used to remove it from ships' holds.
Around the middle ot the 4th millennium BC, the use of copper metallurgy, with cast tools weapons tools and weapons, was a
factor leading to urbanisation in Mesopotamia.
The single-span bridge under construction across the Messina Straits between Sicily and mainland Italy will have a span of 3,320 m/10,892 ft, the world's longest by far.
Bridge (built Wales 1906) is a high-level suspension bridge which carries a car suspended a few feet above the water.
The Bronze Age is the stage ot prehistoric cultural development when bronze, an alloy of copper and tin, first came into regular use in the manufacture of tools, weapons and other objects.
The Bronze Age marks the transition between the Neolithic Period (a phase of the Stone Age), when stone tools and weapons were predominant, and the succeeding Iron Age, when the large-scale use of metals was introduced.
In China the use of bronze was introduced relatively late, probably during the early phases of the Shang dynasty (c. 1600-1027 BC). From 2500-1200 DC, the Aegean civilisations of the Minoans and Mycenaeans established extensive trade routes into central Europe to obtain tin and copper.
The Bronze Age spread | throughout Europe c. 1800 BC, chiefly through the influence of I the Uneticians (named after the archeological site of Unetice, in central Europe), a farming and metalworking people living close to the ore
For reasons not wholly understood even to-the Mayan civilization entered into sharp after 900 A. D. When the Spanish con-arrived, they encountered no tightly ized Indian nation. Indeed, since beasts of , metal tools and weapons, and even the were unknown to them, the Mayan and indigenous populations were no match for jiuropean invaders. |
|
|
| |
|
|
|
|
