Before van Leeuwenhoek’s observations of bacteria ...Lambert van Eijck: Nobody could have discovered bacteria because they didn’t have the resolution. Intagliata: Lambert van Eijck is a materials scientist at the Delft University of Technology in the Netherlands. He says some of van Leeuwenhoek’s microscopes could magnify things more than 200 times. And contemporaries, like Robert Hooke in England, who’d written a book full of microscopic observations—were stunned by his findings. He and his colleagues were able to peer inside several of van Leeuwenhoek’s microscopes with a nondestructive technique called neutron tomography.