Introduction to Spectral Sensitivity Spectral sensitivity, fundamentally defined, refers to the extent that light of different wavelengths is absorbed by the photopigments of the retina. This crucial visual phenomenon dictates how effectively the visual system detects and responds to electromagnetic radiation across the visible spectrum, which typically ranges from approximately 380 nanometers (nm) to 740 […]
Introduction to Extraspectral Hue The concept of an extraspectral hue refers to any perceived color that cannot be generated by a single, narrow band of light wavelength within the visible spectrum. Unlike pure spectral colors, which correspond directly to specific electromagnetic frequencies, extraspectral hues are inherently composite, resulting from the simultaneous stimulation of the retina […]
The Concept of Spectrum in Psychology and Science Core Definition and Scientific Origins The term Spectrum fundamentally describes a condition that is not limited to a specific set of values but rather exists across a continuous range. In its original scientific context, borrowed from physics, a spectrum—such as the visible light spectrum—represents the distribution of […]