Ans: The first-ever microscope was invented in the year 1509. After its invention, the lives of people changed. People could see the new world of living beings inside the water, in our food, in plants, in our nose, and so on. Then, in the late 16th century, numerous Dutch lens makers designed various devices that could magnify the objects; however,  in 1609, an  Italian natural philosopher, astronomer, and mathematician named Galileo Galilei perfected the first-ever device named microscope.Galileo also made great contributions in the field of astronomy, in the sciences of motion, the strength of materials, and the development of various scientific methods.Dutch Lens makers Zacharias Janssen and Hans Lipperhey were the first men to develop the concept of the compound microscope.