The manufacture of oil plant in tubes made it possible for 19th century European artists to make painting a portable activity. The spontaneity and directness of painting outdoors is evident in works by impressionist artists.
Impressionism is basically a 19th-century art movement characterized by relatively small, thin, yet visible brush strokes, open composition, emphasis on accurate depiction of light in its changing qualities, ordinary subject matter, the inclusion of movement as a crucial element of human perception and experience, and unusual visual angles.
