Anton van Leeuwenhoek, microscope pioneer, was born on this day. He turned the microscope onto all sorts of life and objects, and was not believed when he first described what he saw, which included single-cell organisms. He was, by the way, a steady, church-going man who viewed what he was seeing as God's handiwork.
Anton van Leeuwenhoek (1632 to 1723)
He looked below eye-level.