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  2. Intensive and extensive properties - Wikipedia

    en.wikipedia.org/wiki/Intensive_and_extensive...

    An intensive property is a physical quantity whose value does not depend on the amount of substance which was measured. The most obvious intensive quantities are ratios of extensive quantities. In a homogeneous system divided into two halves, all its extensive properties, in particular its volume and its mass, are divided into two halves.

  3. Colorfulness - Wikipedia

    en.wikipedia.org/wiki/Colorfulness

    The purest (most saturated) color is achieved by using just one wavelength at a high intensity, such as in laser light. If the intensity drops, then as a result the saturation drops. To desaturate a color of given intensity in a subtractive system (such as watercolor), one can add white, black, gray, or the hue's complement.

  4. Chromaticity - Wikipedia

    en.wikipedia.org/wiki/Chromaticity

    Some color spaces separate the three dimensions of color into one luminance dimension and a pair of chromaticity dimensions. For example, the white point of an sRGB display is an x , y chromaticity of (0.3127, 0.3290), where x and y coordinates are used in the xyY space.

  5. On Vision and Colours - Wikipedia

    en.wikipedia.org/wiki/On_Vision_and_Colours

    (1) The quantitative intensive division unites with the qualitative division resulting in a loss of color energy and a deviation toward paleness or darkness; (2) After being excited by an external stimulant, the quantitative extensive division unites with the qualitative division resulting in the retina being covered by many various juxtaposed ...

  6. Geometrical-optical illusions - Wikipedia

    en.wikipedia.org/wiki/Geometrical-optical_illusions

    For example, these can be in brightness or color, called intensive properties of targets, e.g. Mach bands. Or they can be in their location, size, orientation or depth, called extensive . When an illusion involves properties that fall within the purview of geometry it is geometrical–optical , a term given to it in the first scientific paper ...

  7. Physical property - Wikipedia

    en.wikipedia.org/wiki/Physical_property

    An intensive property does not depend on the size or extent of the system, nor on the amount of matter in the object, while an extensive property shows an additive relationship. These classifications are in general only valid in cases when smaller subdivisions of the sample do not interact in some physical or chemical process when combined.

  8. Talk:Intensive and extensive properties - Wikipedia

    en.wikipedia.org/wiki/Talk:Intensive_and...

    The Intensive and extensive properties#Distinction from perceptions section uses color as an example of something related to an extensive property which it is not. I would correct this but cannot think of any preception related to an extensive property.

  9. Color vision - Wikipedia

    en.wikipedia.org/wiki/Color_vision

    An element C of H color is a function from the range of visible wavelengths—considered as an interval of real numbers [W min,W max]—to the real numbers, assigning to each wavelength w in [W min,W max] its intensity C(w). A humanly perceived color may be modeled as three numbers: the extents to which each of the 3 types of cones is stimulated.