The electron microscope perfectly displays transformations that are too small for the human eye. The limescale formed in a pipe is different from that in a kettle. A swarf has shapes far more elegant than a machined piece of iron, an eggshell does not resemble a feather, and pollen does not resemble a seed. And what about technological transformations! Thin layers on cutting tools are abraded, plasma-activated surfaces are not entirely smooth, and graphene and graphene oxide are brothers who are as different as siblings can be. Come and see for yourself.