The years of the 1600′s were a time of trial and error. There were many attempts to make many inventions, and while most of them failed, there were some who succeeded.
Microscope: Take the microscope for instance- this great instrument was developed in the Netherlands in between the years of 1590 and 1608. While we do not know who actually made it, researchers have narrowed it down to three key people: Hans Lippershey, or Hans Janssen and his son.Although Galileo helped the microscope become popular, it was really only until Robert Hooke published his book Micrographia that the study of the microscope became popular.
This invention changed the way that people thought. Before they never knew about DNA, or RNA, or even that there were bacteria that made you sick. This invention caused them to look into the realm of things, and realize what they were missing. This invention, changed the world.
Evolution of the Submarine:
The first actual underwater warship was developed by a certain famous man named Leonardo da Vinci, although his attempts were successful, da Vinci kept his plans secret, because he didn’t want to make the war that raging any worse. In 1578 William Borne began planning his first submarine, but something happened, and his dream was never fulfilled. Finally in the year of 1620, and man named Cornelius Drebbel, a Dutch inventor, built a rowboat that was covered in leather! The oars came out through holes that were airtight, so no water seeped through. This was considered the first submarine. This boat was able to stay underwater for a couple hours, and could only go down about 15 feet.
This invention changed the way a war was fought, and a new way of transportation. Before, people could only go on a ship above water, but now, this ship would sink underwater, and creep into enemy territory without ever being seen. This invention changed the world.
This is a picture of what the first submarine should have looked like.
Sites: Inventions of the Renaissance- http://www.mce.k12tn.net/renaissance/inventions.htm