Correlated color temperature. A specification of the apparent color of a light source relative to the color appearance of a reference source, measured in kelvin (K). The CCT rating for a lamp is a general indication of the "warmth" or "coolness" of its color. Lamps with a CCT below 3200 K are usually considered warm (more yellow) sources, whereas those with a CCT above 4000 K are usually considered cool (more blue) in appearance.
Correlated color temperature. A description of the color appearance of a light source in terms of its warmth or coolness. The CCT relates the color appearance of the light emitted by the lamp to the color appearance of the reference material heated to a high temperature (measured on the Kelvin scale, abbreviated K). As the temperature rises, the color appearance shifts from yellow to blue. Thus, lamps with a low CCT (3000 degrees K or less) have a yellow-white color appearance and are described as "warm"; lamps with a high CCT (4000 degrees K or higher) have a blue-white color appearance and are described as "cool".
Correlated Color Temperature. A term used for discharge lamps, where no hot filament is involved, to indicate that the light appears "as if" the discharge lamp is operating at a given color temperature. CCT generally measures the "warmth" or "coolness" of light source appearance using Kelvin(K) temperature scale.
Correlated Color Temperature. The phrase use to describe the temperature at which a Planckian Black Body Radiator and an illumination sourceâ€(tm)s appear to match, usually specified in Kelvin (K).
Correlated color temperature. Describes the color appearance of the light that is produced, in terms of its warmth or coolness. A low color temperature (3000 K and lower) describes a warm source, such as a typical incandescent lamp and a warm fluorescent lamp. A high color temperature (4000 K and higher) describes a cool source, such as a cool white fluorescent lamp.
Correlated Color Temperature. A specification of the color appearance of a lamp, relating its color to that of a reference source heated to a particular temperature, measured in degrees Kelvin (K); CCT generally measures the "warmth" of "coolness" of light source appearance.
Correlated Color Temperature. A specification of the apparent color of a light source relative to the color appearance of an ideal incandescent source held at a particular temperature and measured on the Kelvin (K) scale. The CCT rating for a lamp is a general indication of the warmth or coolness of its appearance. As CCT increases, the appearance of the source shifts from reddish white toward bluish white; therefore, the higher the color temperature, the cooler the color appearance. Lamps with a CCT rating below 3200 degrees Kelvin are considered warm sources, whereas those with a CCT above 4000 degrees Kelvin are considered cool in appearance.
CORRELATED COLOR TEMPERATURE. A specification of the color appearance of a light source, relating its color to that of a blackbody radiator, as measured in Kelvins (K). CCT is a general measure of a lamp's "coolness" or "warmness."
Correlated Color Temperature. Compares the warmth or coolness of light as it is produced, or the source as it appears to the viewer.
Correlated Color Temperature. (also called Chromaticity) A description of the color appearance of the light emitted by a lamp, relating its color to the color appearance of the light from a reference source when heated to a particular temperature expressed in degrees Kelvin (K). A lower numerical value indicates a lamp that emits a yellow or orange light while a higher numerical value indicates a bluer light source. Some examples of typical CRI values: high pressure sodium - 1900 K; incandescent - 2800 K; halogen - 3000 K; cool white fluorescent - 4100 K; daylight simulating fluorescent - 5000K.
This specifies the color that a given bulb itself appears when it is in use. (Whether it looks ‘hot' ‘warm' or ‘cold'). It is compared in degrees Kelvin (K), to a source of reference at a given temperature. (Not the color of the glass).
Correlated Color Temperature. the "color" of the light given off by a lamp.