I have learned alot so far about science during the 15th and 16th century. Some inventions that were made were the early helicopter and plane, invisible ink, printing press, cast iron pipe, monkey wrench, portable watch, rifle barrel, shotgun, wrench, screwdriver, hydrometer, parachute, and tank. Galileo was the father of modern science. I also learned that in this time period, the discovery that the earth wasnt the center of the universe was made. I have enjoyed all the research and vidoes that i have seen.