noun
- plural of actinism; the property of radiation (especially ultraviolet light) that produces chemical changes, such as in photography or photosynthesis
Usage: technical; scientific
Examples
- The actinisms of ultraviolet light are essential to photographic processes.
- Different wavelengths of light exhibit varying degrees of actinisms.
- Scientists study the actinisms of solar radiation to understand atmospheric chemistry.
- The actinisms present in sunlight can affect the color of exposed materials.
- Photographers must account for the actinisms of different light sources when selecting film.