Brush trace
The brush trace is the structure that the brush leaves on the surface of the picture while painting .
The art historian can learn a lot about the painter from the brushstroke , even if the picture is not signed: the brushstroke shows in which century a picture was painted; you can see in which painting technique it was created and in which layers of paint the picture was created.
Brush marks are also important under the surface of the picture, as they can give the painting a certain spatiality . Furthermore, the previous image structure can be recognized on the basis of the X-ray recordings of the brush marks .