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Around 11th century, the Chinese of the Song Dynasty
began to load gunpowder in the middle of thick bamboo as a projection
firearm, firing clay pellets like a shotgun. At some point in the fourteenth
century (the earliest example is dated 1368) they replaced the bamboo with
bronze, which made the early cannon more reliable and powerful. During
wartime, the Chinese used them heavily in defense against the Mongols.
Afterward, the Mongols further improved upon the qualities of the Chinese
cannon, making it more deadly.
The invention of gunpowder had spread into India prior to the Mongol
intrusion in China. In India, gunpowder was manufactured and used in both
rocketry and for powering cannon. Even before this however, the Indians used
rudimentary projectile weapons to launch stones and explosive/incendiary
objects at besieging armies. The Arthashastra mentions a tubular weapon, the
Sataghni. Indigenous gunpowder was called agnicurna. By the 16th Century,
the world's largest and heaviest cannon were being cast in India. The best
examples of this are the Jaivana Cannon in Jaigarh, Rajasthan and the
Thanjavur Cannon in Thanjavur armories in Thanjavur, Tamil Nadu.
The phrases "gun powder" and "cannon" first appeared in text in 1252, when
Friar Roger Bacon wrote an essay on Chinese use of gun powders. The earliest
type of cannon, the smoothbore cannon, first appeared in 14th century
Europe. Chinese records indicate that firearms were in use in China
beforehand, with possible prototypes of cannon and rockets also in use.
A cannon generally refers to a high velocity, low trajectory, direct fire
weapon such as the main gun on most modern main battle tanks.
A howitzer generally refers to a weapon using a lower velocity than a
cannon, which fires on a higher trajectory, and provides indirect fire.
These are both differentiated from a mortar, which fires a low velocity (by
comparison) round at very high trajectory at much more limited range. |