Get it on Google Play
New! Download Unionpedia on your Android™ device!
Faster access than browser!


Index Brightness

Brightness is an attribute of visual perception in which a source appears to be radiating or reflecting light. [1]

30 relations: Absolute magnitude, Apparent magnitude, Arithmetic mean, Bert (name), Color appearance model, Colorfulness, Darkness, Electric light, Federal Standard 1037C, Federal Trade Commission, HSL and HSV, Hue, Light, Lightness, Luma (video), Luminance, Luminosity, Luminous flux, Photometry (optics), Proto-Germanic language, Proto-Indo-European language, Radiance, Radiometry, Relative luminance, RGB color space, Spectral centroid, Star, Timbre, Visual perception, White's illusion.

Absolute magnitude

Absolute magnitude is a measure of the luminosity of a celestial object, on a logarithmic astronomical magnitude scale.

New!!: Brightness and Absolute magnitude · See more »

Apparent magnitude

The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.

New!!: Brightness and Apparent magnitude · See more »

Arithmetic mean

In mathematics and statistics, the arithmetic mean (stress on third syllable of "arithmetic"), or simply the mean or average when the context is clear, is the sum of a collection of numbers divided by the number of numbers in the collection.

New!!: Brightness and Arithmetic mean · See more »

Bert (name)

Bert is a hypocoristic form of a number of Germanic male given names, such as Robert, Herbert, Gilbert, Norbert, Bertram, Berthold, and Albert.

New!!: Brightness and Bert (name) · See more »

Color appearance model

A color appearance model (abbreviated CAM) is a mathematical model that seeks to describe the perceptual aspects of human color vision, i.e. viewing conditions under which the appearance of a color does not tally with the corresponding physical measurement of the stimulus source.

New!!: Brightness and Color appearance model · See more »


Colorfulness, chroma and saturation are attributes of perceived color relating to chromatic intensity.

New!!: Brightness and Colorfulness · See more »


Darkness, the polar opposite to brightness, is understood as a lack of illumination or an absence of visible light.

New!!: Brightness and Darkness · See more »

Electric light

An electric light is a device that produces visible light from electric current.

New!!: Brightness and Electric light · See more »

Federal Standard 1037C

Federal Standard 1037C, titled Telecommunications: Glossary of Telecommunication Terms, is a United States Federal Standard issued by the General Services Administration pursuant to the Federal Property and Administrative Services Act of 1949, as amended.

New!!: Brightness and Federal Standard 1037C · See more »

Federal Trade Commission

The Federal Trade Commission (FTC) is an independent agency of the United States government, established in 1914 by the Federal Trade Commission Act.

New!!: Brightness and Federal Trade Commission · See more »


HSL (hue, saturation, lightness) and HSV (hue, saturation, value) are two alternative representations of the RGB color model, designed in the 1970s by computer graphics researchers to more closely align with the way human vision perceives color-making attributes.

New!!: Brightness and HSL and HSV · See more »


Hue is one of the main properties (called color appearance parameters) of a color, defined technically (in the CIECAM02 model), as "the degree to which a stimulus can be described as similar to or different from stimuli that are described as red, green, blue, and yellow", (which in certain theories of color vision are called unique hues).

New!!: Brightness and Hue · See more »


Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum.

New!!: Brightness and Light · See more »


In colorimetry and color theory, lightness, also known as value or tone, is a representation of variation in the perception of a color or color space's brightness.

New!!: Brightness and Lightness · See more »

Luma (video)

In video, luma represents the brightness in an image (the "black-and-white" or achromatic portion of the image).

New!!: Brightness and Luma (video) · See more »


Luminance is a photometric measure of the luminous intensity per unit area of light travelling in a given direction.

New!!: Brightness and Luminance · See more »


In astronomy, luminosity is the total amount of energy emitted per unit of time by a star, galaxy, or other astronomical object.

New!!: Brightness and Luminosity · See more »

Luminous flux

In photometry, luminous flux or luminous power is the measure of the perceived power of light.

New!!: Brightness and Luminous flux · See more »

Photometry (optics)

Photometry is the science of the measurement of light, in terms of its perceived brightness to the human eye.

New!!: Brightness and Photometry (optics) · See more »

Proto-Germanic language

Proto-Germanic (abbreviated PGmc; German: Urgermanisch; also called Common Germanic, German: Gemeingermanisch) is the reconstructed proto-language of the Germanic branch of the Indo-European languages.

New!!: Brightness and Proto-Germanic language · See more »

Proto-Indo-European language

Proto-Indo-European (PIE) is the linguistic reconstruction of the hypothetical common ancestor of the Indo-European languages, the most widely spoken language family in the world.

New!!: Brightness and Proto-Indo-European language · See more »


In radiometry, radiance is the radiant flux emitted, reflected, transmitted or received by a given surface, per unit solid angle per unit projected area.

New!!: Brightness and Radiance · See more »


Radiometry is a set of techniques for measuring electromagnetic radiation, including visible light.

New!!: Brightness and Radiometry · See more »

Relative luminance

Relative luminance follows the photometric definition of luminance, but with the values normalized to 1 or 100 for a reference white.

New!!: Brightness and Relative luminance · See more »

RGB color space

A RGB color space is any additive color space based on the RGB color model.

New!!: Brightness and RGB color space · See more »

Spectral centroid

The spectral centroid is a measure used in digital signal processing to characterise a spectrum.

New!!: Brightness and Spectral centroid · See more »


A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.

New!!: Brightness and Star · See more »


In music, timbre (also known as tone color or tone quality from psychoacoustics) is the perceived sound quality of a musical note, sound or tone.

New!!: Brightness and Timbre · See more »

Visual perception

Visual perception is the ability to interpret the surrounding environment using light in the visible spectrum reflected by the objects in the environment.

New!!: Brightness and Visual perception · See more »

White's illusion

White's illusion is a brightness illusion where certain stripes of a black and white grating is partially replaced by a gray rectangle (Fig. 1).

New!!: Brightness and White's illusion · See more »

Redirects here:

Brightness (color), Brigthness, 🔅, 🔆.


[1] https://en.wikipedia.org/wiki/Brightness

Hey! We are on Facebook now! »