brightness

As nouns the difference between lumen and brightness

is that lumen is in the International System of Units, the derived unit of luminous flux; the light that is emitted in a solid angle of one steradian from a source of one candela. Symbol: lm while brightness is the quality of being bright.

As nouns the difference between brightness and antitruncation

is that brightness is the quality of being bright while antitruncation is the presence of an outer radial surface brightness profile that is distinctly shallower in scope than the main disk profile.

As nouns the difference between brightness and superpixel

is that brightness is the quality of being bright while superpixel is (computer graphics) a polygonal part of a digital image, larger than a normal pixel, that is rendered in the same colour and brightness.

As nouns the difference between brightness and lightmap

is that brightness is the quality of being bright while lightmap is (computer graphics) a precomputed data structure that stores the brightnesses of surfaces in a video game, etc.

As a noun brightness

is the quality of being bright.

As an adjective dimmable is

able to be dimmed; able to have illumination decreased in brightness.

As a noun brightness

is the quality of being bright.

As a proper noun rayleigh is

.

As nouns the difference between brightness and kilorayleigh

is that brightness is the quality of being bright while kilorayleigh is (physics) a unit of brightness equal to one thousand rayleighs.