Cannon
A cannon was a primitive projectile weapon that fires cannon balls or other projectiles. The term cannon has also been applied to some types of mounted directed energy weapons with a fixed or limited firing arc. (; ; )

Projectile cannons

Cannons were in use in the American Civil War, as witnessed in the Time stream. () Cannons were also part of the history of the mirror universe , where they were used as artillery and on sailing ships. ()

A cannon stood looking out at the ocean near a Los Angeles boardwalk frequented by the time traveler Braxton in 1996. ()

In 2267, James T. Kirk managed to defeat a Gorn by creating a primitive makeshift cannon. He made gunpowder out of potassium nitrate, sulphur and coal, and used a bamboo stick as the cannon and a diamond as the projectile. () In 2293, the president of the Federation had a model of a cannon on his desk. ()

In 2364, a Q recreation of a Napoleonic marshal's camp included a cannon. ()

Some aspects of the 2373 Q Civil War were represented by cannons when it was perceived by Humans. () 

During 2376, cannons were in use on Kelemane's planet, where the Central Protectorate was attacked by a neighbor state using cannons, destroying several buildings, and starting a short war. The Central Protectorate's Tactical Air Command responded. A new treaty was signed after a few weeks. ()

During the Dominion War, the Remans were used by the Romulan Empire essentially as "cannon fodder" against the Jem'Hadar. ()

Directed energy cannons 

The term cannon has also been applied to several types of directed energy weapons. These have ranged from smaller vehicle-mounted turrets () to starship-mounted weaponry. () A common feature in these directed energy cannons is that their emitter needs to be physically aimed at the target () where as directed energy weapon banks and arrays usually have a more omnidirectional firing arc and the direction of fire can be programmed without moving the actual weapon. (, et al.)

List of directed energy cannons
 Disruptor cannon
 Isokinetic cannon
 Laser cannon
 Particle cannon
 Phase cannon
 Pulsed phase cannon
 Phased ion cannon
 Phaser cannon
 Photonic cannon (fictional technology)
 Plasma cannon
 Pulse cannon

External links
 
 

de:Kanone
Projectile weapons