noun a substance or object that emits light, especially in the context of lighting or illumination
In photography, an illuminant is the source of light used to illuminate a subject or scene.
In vision science, an illuminant is the light source that influences how colors are perceived by the human eye.
In color science, an illuminant is a standard light source used to define color spaces and color rendering.
In lighting design, an illuminant refers to the light source used to illuminate a space or object.
In spectrophotometry, an illuminant is the light source used to measure the reflectance or transmittance of materials.
In literature, the term 'illuminant' may be used to describe a character or object that sheds light on a particular theme or idea within the story.
Psychologists may use the term 'illuminant' to refer to a factor or variable that helps to clarify or explain a particular psychological phenomenon or behavior.
Scientists may use 'illuminant' to describe a substance or material that emits light when exposed to certain conditions, such as in the field of luminescence studies.
Photographers may use 'illuminant' to refer to the primary light source used in a photograph, such as natural sunlight or artificial lighting.