Both air cooled and water cooled machine guns have been made.
It depends on the years that your look at in World War 1 they had water cooling in modern times we have air cooling.
They were called dogfights.
Speaking on a general level: WWI was the war of the 'big guns' and the machine guns, WW II of the tanks and air power.
During WW2 aircraft used machine guns and automatic cannons, 20mm primarily. During the Vietnam War, jet aircraft used 20/30mm cannons and air to air missiles during aerial combat (dog-fights).
THE JAPANESE ATTACKED PEAR HARBOUR WITH AN AIR ASSULT USING TORPEDOS BOMBS AND MACHINE GUNS
The machine gun evolved from the Gattling gun, a device that that rapidly fired bullets when cranked. WWI saw the first true machine guns, liquid and air cooled. http://en.wikipedia.org/wiki/Gatling_gun Another example is the french Mitralleuse, used in the Franco/Prussian war of 1870/71.
Early machine guns such as Maxim and Vickers were water cooled and had distinctive jackets around their barrels, except models intended for installation on airplanes. Most later machine guns are air cooled to make them lighter and more portable.
machine guns and planes the guns were ak47
Washing machine Cold or cool water Delicate cycle AIR DRY.
The combat in the air gained bombs and machine guns on the planes.
Yes
air pressure
By the development and manufacture of lighter, air cooled machine guns.
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dogfights
Usually from the surrounding air, meaning that while the ice melts, the surrounding air will cool down. Or water, if the ice is in water.Usually from the surrounding air, meaning that while the ice melts, the surrounding air will cool down. Or water, if the ice is in water.Usually from the surrounding air, meaning that while the ice melts, the surrounding air will cool down. Or water, if the ice is in water.Usually from the surrounding air, meaning that while the ice melts, the surrounding air will cool down. Or water, if the ice is in water.
The air particles would get denser and the air would sink. If you cool it enough the water vapor in the air might freeze.
Yes, they did throw babies up in the air and shoot them with machine guns like a target.