They have etchings with lines going in complicated directions which realistically mimic the way depth flows. Rembrandt created his etchings in the mid 1600's. He lived from 1606-1669 and made many etchings and paintings during his lifetime.
He used a number of hatches to create the hair on the old mans head, and within the beard. The self. He posed the peoples in it so perfectly that you could tell she was standing behind him
