Luminosity vs. Brightness

Luminositynoun

(uncountable) the state of being luminous, or a luminous object; brilliance or radiance

Luminositynoun

(physics) the ratio of luminous flux to radiant flux at the same wavelength; the luminosity factor

Luminositynoun

(astronomy) the rate at which a star radiates energy in all directions

Luminositynoun

The quality or state of being luminous; luminousness.

Luminositynoun

the quality of being luminous; emitting or reflecting light;

Luminosity

Luminosity is an absolute measure of radiated electromagnetic power (light), the radiant power emitted by a light-emitting object.In astronomy, luminosity is the total amount of electromagnetic energy emitted per unit of time by a star, galaxy, or other astronomical object.In SI units, luminosity is measured in joules per second, or watts. In astronomy, values for luminosity are often given in the terms of the luminosity of the Sun, L⊙.

Brightnessnoun

The quality of being bright.

Brightnessnoun

The perceived luminance of an object.

Brightnessnoun

Intelligence, cleverness.

Brightnessnoun

The quality or state of being bright; splendor; luster; brilliancy; clearness.

Brightnessnoun

Acuteness (of the faculties); sharpness 9wit.

Brightnessnoun

the location of a visual perception along the black-to-white continuum

Brightnessnoun

intelligence as manifested in being quick and witty

Brightnessnoun

the quality of being luminous; emitting or reflecting light;

Brightness

Brightness is an attribute of visual perception in which a source appears to be radiating or reflecting light. In other words, brightness is the perception elicited by the luminance of a visual target.