Keelmen Heaving in Coals by Moonlight

Keelmen Heaving in Coals by Moonlight, 1835
Joseph Mallord William Turner, British, 1775 - 1851
Oil on canvas, 92.3 x 122.8 cm (36 5/16 x 48 3/8 in.)
Inscription: lower left on buoy: JMWT
Widener Collection, NGA 1942.9.86

It is easy to see J.M.W. Turner's similarities with the Impressionists. His ability to capture the effects of light is spellbinding. The light in Keelmen Heaving in Coals by Moonlight appears to glow from within. This comes across even stronger when viewing the actual painting, and not a photo transmitted through a light-emitting monitor. How did he achieve this effect with mere paint?

He certainly influenced other artists. "Indeed, in his 1904 review of Monet's London series, Gustave Kahn implies that Turner was an Impressionist:

"One of the famous anecdotes of the history of Impressionism was the voyage to London made by Claude Monet and Camille Pissaro at the beginning of their careers, in the full youthfulness of art, their shock before Turner's precise and magical illusions, the hold over them of the huge town and its sky of soot and mother-of-pearl, made iridescent by so many atmospheric changes, made grey by so much smoke."
- "The Dazzle of the Great Turner in Their Eyes?" by Virginia Spate in _Best Australian Essays 2001_, edited by Peter Craven, page 474