noun

1.

 atmospheric perspective-a technique of rendering depth or distance in painting by modifying the tone or hue and distinctness of objects perceived as receding from the picture plane, especially by reducing distinctive local colors and contrasts of light and dark to a uniform light bluish-gray color.

Jwebb- when objects appear lighter as they get fartherer from the viewer.

Gesture drawing Typical situations involve an artist drawing a series of poses taken by a model in a short amount of time, often as little as 30 seconds, or as long as 2 minutes.