Landscape: A landscape is a picture showing natural scenery, without narrative content. Also, the turning of a piece of paper or canvas where the long rectangular edge is on the top and bottom, and short sides are on the left and right.

-Gardner's Art Through the Ages

Langley, Walter: Walter Langley (1852-1922) was an English watercolorist who painted working-class people. He was considered a social realist, and tended to concentrate on fisherman and their families.

-Wikipedia

Laurens, Jean-Paul: Jean-Paul Laurens (1838-1921) was one of the last members of the Academy in France. He was a painter and a sculptor. He used historical and religious themes to convey his opposition to the king's oppressive ways and the religious order's oppression. One such example is called The Last Moments of Maximillian, depicting the Emperor Maximillian who was in charge of Mexico between 1864 and 1867.

-Wikipedia

Leonardo da Vinci: Leonardo da Vinci was a true Renaissance man, he painted, engineered machines, he studied and drew human anatomy, he was a scientist, mathematician, inventor, anatomist, sculptor, architect, botanist, musician and writer. His journals show that he was the earliest person to invent what we know as a helicoptor, tanks, machine guns, solar power, calculators, and came up with the beginnings of plate techtonics.
      His two most famous paintings, The Last Supper and the Mona Lisa are the most reproduced and famous of all time, next to Michelangelo's Creation of Adam.
      Leonardo was born April 15, 1452 and died on May 2, 1519. He was born in Florence, Italy, and worked in Rome, Bologna, Milan, Venice, and he spent his last years in France.

-Wikipeida

Lhermitte, Leon Augustin: Leon Augustin Lhermitte (1844-1925) was a French Realist painter and etcher. His work depicted rural scenes where peasants would be working. An example of his work, The Harvesters, depicts two women and a man bailing hay.

-Wikipedia

Line: A series in interconnected points made by a tool, instrument, or material as it moves across an area, made visible as a value change from its surroundings.

-Art Fundamentals

Linear Perspective: Linear Perspective is a system that allows the artist to create a three-dimensional space on a flat, two-dimensional surface. A horizon line is drawn on the surface, and a vanishing point is placed on the line. The artist points all of the horizontal lines toward this vanishing point, decreasing the size as they get closer to the point.

-Art Fundamentals