In detail, Zhan Sen and his son invented the microscope by chance! The story goes like this: 1590, on a sunny and windless morning, he was playing on the roof of Zhan Sen. Inadvertently, he put two convex mirrors into a metal tube and used this tube to look at the buildings on the street. Strange things have happened. The cock sculpture on the church tower is several times larger than the original one. This unexpected discovery excited Zhan Sen. He ran downstairs happily and took his father with him.
It seems that Galileo first used this "compound" microscope for scientific research. About 16 10 years ago, he studied insects with a compound microscope and observed their compound eyes. 1665, the compound microscope created by Hooke was the best microscope in the early days. He used a hemispherical Dan Toujing as the objective lens and a plano-convex lens as the eyepiece. The lens barrel is 6 inches long and can be stretched. There is no lamp under it for lighting. The lamp is attached with a spherical condenser, which shows that it is the prototype of modern sacrificial microscope. Later, achromatic microscope and electron microscope appeared, and microscope technology made great progress.
Of course, accidental discovery can't replace scientific invention. It is worth emphasizing that the cultivation of Zhan Sen and his son played a decisive role. They seized this accidental discovery, thought carefully and practiced repeatedly, and finally invented the world's first convex lens microscope with different distances.
Of course, this microscope can only be called the "ancestor" of the microscope family, and its magnification and resolution are quite low. Later, through the continuous improvement of many scientific and technological workers, the microscope became what it is today.