Which technique involves applying thin layers of glaze in oil painting to achieve luminosity?

The technique that involves applying thin layers of glaze in oil painting to achieve luminosity is glazing. This method allows artists to build up depth and richness in color by layering transparent glazes over dried layers of paint. The light interacts with the multiple layers, creating a glowing effect that adds to the overall luminosity of the painting. This technique is often used to create nuanced colors and subtle transitions, allowing for greater complexity in the final work.

In contrast to glazing, impasto involves applying paint in thick, textured strokes, which results in a three-dimensional surface and can create dramatic highlights and shadows. Underpainting is a technique where an initial layer of paint is applied, usually monochromatic, to establish values and forms before adding color. Chiaroscuro refers to the use of strong contrasts between light and dark to give the illusion of volume in modeling three-dimensional objects and figures. These techniques serve different purposes and are distinct from glazing, which specifically focuses on building luminosity through layering translucent colors.