Värinmuutoksia
Värinmuutoksia, often translated as color changes, refers to alterations in the hue, saturation, or lightness of an object or substance. These changes can be caused by a variety of factors, including chemical reactions, physical processes, or external stimuli. In chemistry, pH indicators are a classic example of substances that undergo visible color changes in response to variations in acidity or alkalinity. Litmus paper, for instance, turns red in acidic solutions and blue in alkaline ones.
In materials science, color changes can indicate a material's response to heat, light, or mechanical stress.
Biological systems also exhibit color changes. The change in leaf color during autumn is a well-known phenomenon