- The visual perception of more or less light emitted from a source. The more light subjectively perceived, the greater the brightness.
- The perceived brightness (1) from a screen, such as that of a TV or computer monitor.
- The total light emitted or reflected from a surface in a given direction, per unit of projected area. The measurement must be made from the same direction the light is emitted from. May be expressed in foot-lamberts. luminance (1) is the term currently used for this concept.
- The ability of a sound reproduction system to accurately reproduce higher frequencies. Also called brilliance (2).
- In sound reproduction, an excess of higher frequencies, which may impart a shrillness to the listening experience.
- synonym brilliance
- On a screen, the extent of brightness (2) and clarity perceived.
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