Glossary
- Photometry: field of science studying the energetic characteristics of visible light radiation as perceived by the human eye
- Wavelength ( of a light wave ): distance between two consecutive identical states of the electric ( or magnetic ) field
- Spectral sensitivity ( human eye ): normalized sensitivity of the human eye to light depending on the wavelength; calculated in the visible spectral range with a maximum value at 555 nm for the photopic vision
- Photopic vision: vision with daytime lighting