Labels:book | box | bulletin board | door | earth | person | poster | reckoner | road | sky OCR: WA RFARE In Leonardo's time early forms of guns and cannons were used in the wars between the Italian city-states Leonardo designed many improvements of existing technology his gun had two important innovations First, it was breech- loading, meaning that the ammunition was loaded directly into the back end of the gun instead of being tamped into the barrel from the front The second innoy ration was the method by which the gun barrel was cooled Leonardo set this gun barrel inside copper casing that was filled with water Once the gun was fired, the barrel would cool off rapidly because the water would absorb the heat. Water -cooled barrels used extensively during World War I. are important for guns that have high rate of firing to keep the buildup of heat from damaging the barrel NARFARE nce ...
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