Week Two History Essay

         This week, I learned about the Vapor compression theory, Oliver Evans, the Percussion ignition, and the canning processes. First is the vapor compression theory, which describes how heat can be taken from the outside and turned to vapor to cool an area down. It was invented by Oliver Evens in America in 1805. It solved the problem of keeping enclosed areas cool, and it led to refrigerators and air conditioners. Second, I learned a bit more about Oliver Evans. He was born in Delaware in 1755. He solved the problem of keeping enclosed areas cool, by developing the vapor compression theory. Oliver Evens’ accomplishments influence new ideas even today. For example, Henry Ford used his automation ideas in his manufacturing of cars. Next is the percussion ignition. It was a new way to light gunpowder to be able to shoot a gun. Percussion ignition uses a hammer that smashes down on the gunpowder, and then the gunpowder blows up and shoots the bullet out. John Forsith invented percussion ignition in Scotland around 1820. It made it possible to shoot guns faster. Without Forsyth, there’d be no Colt. Lastly, I learned about the canning process. It was invented by Nicolas Apert in Paris in 1795. It solved the problem of food spoiling so quickly. Canned food is important during recessions. My favorite invention I learned about this week is percussion ignition, because I got to watch videos on all the different ways guns were fired, and how they got better over time. These are the inventions and the inventors that I learned about this week.