I learned about three inventions and one inventor this week. The inventions were vapor compression, percussion ignition, and the canning process. The inventor’s name was Oliver Evans. First, I learned about vapor compression. William Cullen experimented with refrigeration in 1755.  Ben Franklin investigated vapor cooling in 1758. Evaporation absorbs heat and cools the environment, while condensing releases heat and warms the environment. Second, I learned about Oliver Evans. Oliver Evans was born in Delaware in 1755. He did some of the first work with high pressure steam engines in America. He invented over 80 inventions in his lifetime. John Forsyth born in Scotland in 1769 invented the percussion ignition. Percussion ignition relies on vibration that is channeled into a barrel. The percussion ignition system led to modern bullet design which led to the iconic wild west. Finally, I learned about the canning process. Nicolas Appert, was a chef born in 1749 and is credited with inventing the canning process. The canning process uses temperature under pressure. Canning preserves nutritional value of food over time because the heat destroys any bad bugs that may spoil the food. Canned food is important during recessions and canned goods are a portion of modern diets. 

My favorite invention I learned about this week was the canning process. One reason I like the canning process is because I can make my own pickles if I learn a lot about it and I really like pickles. Another reason I like the canning process is because the food can last for a long time and I like food. The last reason I like the canning process is because you can put a lot of delicious food in them such as fruits, jams, salsas, and more different foods. Those are the reasons the canning process is my favorite invention this week.